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<taxonomicName id="4C554D70FFAD61451CB1FC2F2F30FC73" ID-CoL="6SYW4" authority="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek, 2018" authorityName="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek" authorityYear="2018" box="[151,315,908,934]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="20" pageNumber="471" phylum="Annelida" rank="species" species="jabba" status="sp. nov.">
<emphasis id="B921EAE1FFAD61451CB1FC2F2F30FC73" bold="true" box="[151,315,908,934]" italics="true" pageId="20" pageNumber="471">Osedax jabba</emphasis>
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<figureCitation id="136E2A76FFAD61451CB1FC0D2F2EFC12" box="[151,293,942,967]" captionStart-0="FIGURE 9" captionStart-1="FIGURE 10" captionStart-2="FIGURE 11" captionStart-3="FIGURE 12" captionStart-4="FIGURE 13" captionStartId-0="21.[151,250,1723,1745]" captionStartId-1="22.[151,250,1714,1736]" captionStartId-2="23.[151,250,1683,1705]" captionStartId-3="24.[151,250,1670,1692]" captionStartId-4="25.[151,250,1243,1265]" captionTargetBox-0="[151,1436,625,1701]" captionTargetBox-1="[204,1246,193,1688]" captionTargetBox-2="[208,1325,193,1630]" captionTargetBox-3="[268,1288,193,1629]" captionTargetBox-4="[151,1436,193,1221]" captionTargetId-0="figure@21.[151,1436,625,1701]" captionTargetId-1="figure@22.[204,1246,193,1688]" captionTargetId-2="figure@23.[208,1325,193,1630]" captionTargetId-3="figure@24.[268,1288,193,1633]" captionTargetId-4="figure@25.[151,1436,193,1221]" captionTargetPageId-0="21" captionTargetPageId-1="22" captionTargetPageId-2="23" captionTargetPageId-3="24" captionTargetPageId-4="25" captionText-0="FIGURE 9. Osedax jabba n. sp., previously Osedax ‘spiral’, sp.1 SBJ-2006. A. Anterior end of whale fall ‘Ruby’ at 2898 meters in September 2004. Baleen is prominent on surface of sediment in foreground with tubes (white arrows) of large chaetopterid annelidPhyllochaetopterus gigas(see Nishi &amp;Rouse 2014).Littlebone obvious on sedimentsurface.Background has a cluster of more than10 Osedax jabban. sp. (blackarrow) with their tubes coming directly outof the sediment.B. Cluster of more the 10 (black arrows) Osedax jabba n. sp. at 2898 meters in November 2004. No obvious bone on the sediment surface. C. Two specimens of Osedax jabba n. sp. at 2898 meters in November 2005. Two prominent red blood vessels are visiblethroughthe tube ofeach specimen and theseindicate the trunk is occupyingwholeof tube and iscoiled anteriorly.Trunk does not appear to emerge from tube. D. Lateral view of an Osedax jabba n. sp. specimen emerging from sediment surface, though adjacent to a piece of bone, at 2898 meters in January 2006.Blood vessels are visible, indicating trunk is filling tube." captionText-1="FIGURE 10. Osedax jabba n. sp., previously Osedax ‘spiral’, sp.1 SBJ-2006. A. Preserved paratype (SIO-BIC A1639) female, highly contracted and still in tube collectedat 2898 meters, Nov. 2004.Note absence of palps. B. Lateral view of trunk of preserved paratype (SIO-BIC A1639), showing oviduct running dorsally along trunk and terminating at anterior end of trunk. C. Dorsal view of posterior region of trunk of preserved paratype (SIO-BIC A1639) showing oviduct emerging from lowertrunk region.D. Lower trunk and ovisacof preserved paratype (SIO-BIC A1639).E. Photomontage lateral view of living paratype (SIO-BIC A7836) collected at 2898 meters, November 2009. Tube has been partly peeled away to reveal inflated trunk.Distal (anterior) part of tubeis intact and contains anterior part of the trunk that is not inflated (arrow).Oviduct is visible dorsally(left)and does not containany oocytes.Cluster of more than20 dwarf malesis present at thebase of the trunk.F. Close up of base of trunk of living paratype (SIO-BIC A7836) in 10E, showing scattered dwarf males lying on its surface. Oviduct is the white line in left of the image.Blood vessel inside transparent trunk is also visible." captionText-2="FIGURE 11. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Image of live paratype (SIO-BIC A7837) female, still in tube, collected at 2898 meters in November 2009.Much of trunk is still relatively expanded, but anterior end is contracted(arrow pointsto tip of trunk) and trunk haspulled back along the tube.Mass of fine rootsis attached toseveral small pieces of bone. B. Ventral view of same specimen (SIO-BIC A7837) with sediment-covered part of the tube peeled away to show the transparenttrunk (arrow points to tip of trunk). Large ganglion is visible inventrolateral region of the trunk.C. Close up of dorsal mid-trunk of paratype (SIO-BIC A7837) female,showing oviduct filled with oocytes and an adjacent blood vessel. D. Another close-up of oviduct, more posteriorly near base of trunk, showing some dwarf males in vicinity of oviduct.Oocytes ellipsoidal, 150 µm by 120 µm. E. Living holotype (SIO-BIC A7832) collected October 2007 at 2898 meters with tube dissected open to show main trunk, which has largely ‘deflated’. Oviduct can be seen running along the trunk. Tube also contains lower trunk and ovisac region. Arrow points toposition of where 10 dwarf males were found in lumen of tube against body of the female.F. Close-up of large ganglion in trunk of paratype (SIO-BIC A7837) female, seen in Figure 11B." captionText-3="FIGURE 12. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Lower trunk and roots and attached bone fragments of live paratype (SIO-BIC A7837) female. Two obvious roots forms; those emerging from ovisac are thick and covered in grey sediment and not directly in contact with bone. These branch into thinner roots that are covered in yellowish sediment. These thinner roots branch as well and cover the pieces of bone. B. Lower trunk and roots and attached bone fragments of preserved paratype (SIO-BIC A7838) collected June 2006 at2898 meters.Large mainroots can be seen emerging from posterior end of ovisac. C–F. Various view of finer roots of paratype (SIO-BIC A7838), showing how they branch and also are in contact with fragments of bone of various sizes. Root surfaces not in contact with the bone are covered in sediment. G. Transverse section (7 µm) of paratype (SIO-BIC A7835), near base of trunk where oviduct has emerged to the outer dorsal surface. As with other Osedax, there is an outer epidermis, circular and longitudinal muscles and glands, as well as two major bloodvessels. However, the majorityof thetrunk interior hasno obvious tissue, except for some minor blood vessels and a few oocytes. This interior space is interpreted here as the coelom. H. Another transverse section (7 µm) of paratype (SIO-BIC A7835) towards the distal (anterior) end of the trunk.The same basic structure as seen in G is also apparent here." captionText-4="FIGURE 13. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Cluster of males lying between in tube lumen,in contact with the trunk of a female paratype 4 (SIO-BIC A7836).B. Photomicrographmontage ofmale allotype (SIO- BIC A7839), from tube of paratype 6 (SIO-BIC A7838). Prototroch is visible anteriorly, as is a mass of mature sperm. Some hooks are visible in expanded posterior region. C. Closeup of head showing prototroch and mass of mature sperm. D. Mature sperm squeezed out the head of male.E. Mature sperm.F. Close up of posterior segmented region showing hooked chaetae in pairs on one side of segments 2 and 3. Other chaetae are not in plane of focus." httpUri-0="https://zenodo.org/record/1165892/files/figure.png" httpUri-1="https://zenodo.org/record/1165894/files/figure.png" httpUri-2="https://zenodo.org/record/1165896/files/figure.png" httpUri-3="https://zenodo.org/record/1165898/files/figure.png" httpUri-4="https://zenodo.org/record/1165900/files/figure.png" pageId="20" pageNumber="471">Figures 9-13</figureCitation>
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‘spiral’, (
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Braby 
<emphasis id="B921EAE1FFAD61451D1FFC5B2F67FBD9" box="[313,364,1014,1037]" italics="true" pageId="20" pageNumber="471">et al.</emphasis>
2007
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; 
<bibRefCitation id="EFC44B02FFAD61451D94FC542C75FBD9" author="Katz, S. &amp; Rouse, G. W." box="[434,638,1014,1036]" journalOrPublisher="Invertebrate Biology" pageId="20" pageNumber="471" pagination="368 - 385" part="132" publicationUrl="https://doi.org/10.1111/ivb.12037" refString="Katz, S. &amp; Rouse, G. W. (2013) The reproductive system of Osedax (Annelida, Siboglinidae): sperm ultrastructure, ovary structure and fertilization. Invertebrate Biology, 132, 368 - 385. https: // doi. org / 10.1111 / ivb. 12037" title="The reproductive system of Osedax (Annelida, Siboglinidae): sperm ultrastructure, ovary structure and fertilization" type="journal article" year="2013">Katz &amp; Rouse 2013</bibRefCitation>
; 
<bibRefCitation id="EFC44B02FFAD61451EAEFC542D37FBD9" author="Rouse, G. W. &amp; Wilson, N. G. &amp; Worsaae, K. &amp; Vrijenhoek, R. C." box="[648,828,1014,1037]" journalOrPublisher="Current Biology" pageId="20" pageNumber="471" pagination="236 - 241" part="25" publicationUrl="https://doi.org/10.1016/j.cub.2014.11.032" refString="Rouse, G. W., Wilson, N. G., Worsaae, K. &amp; Vrijenhoek, R. C. (2015) A dwarf male reversal in bone-eating worms. Current Biology, 25, 236 - 241. https: // doi. org / 10.1016 / j. cub. 2014.11.032" title="A dwarf male reversal in bone-eating worms" type="journal article" year="2015">
Rouse 
<emphasis id="B921EAE1FFAD61451EEBFC5B2D0AFBD9" box="[717,769,1014,1037]" italics="true" pageId="20" pageNumber="471">et al.</emphasis>
2015
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; 
<bibRefCitation id="EFC44B02FFAD61451F60FC552A27FBD9" author="Rouse, G. W. &amp; Wilson, N. G. &amp; Goffredi, S. K. &amp; Johnson, S. B. &amp; Smart, T. &amp; Widmer, C. &amp; Young, C. M. &amp; Vrijenhoek, R. C." box="[838,1068,1014,1037]" journalOrPublisher="Marine Biology" pageId="20" pageNumber="471" pagination="395 - 405" part="156" publicationUrl="https://doi.org/10.1007/s00227-008-1091-z" refString="Rouse, G. W., Wilson, N. G., Goffredi, S. K., Johnson, S. B., Smart, T., Widmer, C., Young, C. M. &amp; Vrijenhoek, R. C. (2009) Spawning and development in Osedax boneworms (Siboglinidae, Annelida). Marine Biology, 156, 395 - 405. https: // doi. org / 10.1007 / s 00227 - 008 - 1091 - z" title="Spawning and development in Osedax boneworms (Siboglinidae, Annelida)" type="journal article" year="2009">
Vrijenhoek 
<emphasis id="B921EAE1FFAD61451F9BFC5B2DFBFBD9" box="[957,1008,1014,1037]" italics="true" pageId="20" pageNumber="471">et al.</emphasis>
2009
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; 
<bibRefCitation id="EFC44B02FFAD61451810FC542B2CFBD9" author="Worsaae, K. &amp; Rouse, G. W." box="[1078,1319,1014,1036]" journalOrPublisher="Journal of Morphology" pageId="20" pageNumber="471" pagination="127 - 142" part="271" publicationUrl="https://doi.org/10.1002/jmor.10786" refString="Worsaae, K. &amp; Rouse, G. W. (2010) The simplicity of males: progenetic dwarf males of four species of Osedax (Annelida) investigated by confocal laser scanning microscopy. Journal of Morphology, 271, 127 - 142. https: // doi. org / 10.1002 / jmor. 10786" title="The simplicity of males: progenetic dwarf males of four species of Osedax (Annelida) investigated by confocal laser scanning microscopy" type="journal article" year="2010">Worsaae &amp; Rouse 2010</bibRefCitation>
) ‘sp.1 SBJ-2006’ (GenBank 
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sequence 
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- 
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<emphasis id="B921EAE1FFAD61451CB1FBF42F80FBA5" bold="true" box="[151,395,1111,1136]" pageId="20" pageNumber="471">Material examined.</emphasis>
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sequence 
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), fixed in glutaraldehyde preserved in formalin, 
<collectedFrom id="3849750EFFAD61451E69FBDF2AFAFB41" box="[591,1265,1148,1173]" pageId="20" pageNumber="471">
collected from a natural whale fall (
<taxonomicName id="4C554D70FFAD61451FD4FBDF2AECFB40" baseAuthorityName="Lilljeborg" baseAuthorityYear="1861" box="[1010,1255,1148,1173]" class="Mammalia" family="Eschrichtiidae" genus="Eschrichtius" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="20" pageNumber="471" phylum="Chordata" rank="species" species="robustus">
<emphasis id="B921EAE1FFAD61451FD4FBDF2AECFB40" box="[1010,1255,1148,1173]" italics="true" pageId="20" pageNumber="471">Eschrichtius robustus</emphasis>
</taxonomicName>
)
</collectedFrom>
found at 
<elevation id="0078D1C0FFAD61451942FBDF2F2DFB6D" pageId="20" pageNumber="471">2898 meters depth</elevation>
in 
<location id="8E8A6028FFAD61451D6FFB032C9DFB6D" LSID="urn:lsid:plazi:treatment:03FC87E5FFAD61481CB1FC2F2D61F8AF:8E8A6028FFAD61451D6FFB032C9DFB6D" box="[329,662,1183,1208]" latitude="122.43536" name="Monterey Submarine Canyon" pageId="20" pageNumber="471">Monterey Submarine Canyon</location>
, 
<location id="8E8A6028FFAD61451E86FB3C2D19FB6D" LSID="urn:lsid:plazi:treatment:03FC87E5FFAD61481CB1FC2F2D61F8AF:8E8A6028FFAD61451E86FB3C2D19FB6D" box="[672,786,1183,1208]" latitude="122.43536" name="California" pageId="20" pageNumber="471">California</location>
(
<geoCoordinate id="EE615034FFAD61451F06FB3C2DBDFB6D" box="[800,950,1183,1208]" direction="north" orientation="latitude" pageId="20" pageNumber="471" precision="1" value="36.6101">36°36.606’N</geoCoordinate>
; 
<geoCoordinate id="EE615034FFAD61451FE7FB3C2A68FB6D" box="[961,1123,1183,1208]" direction="north" orientation="latitude" pageId="20" pageNumber="471" precision="1" value="122.43536">122°26.122’N</geoCoordinate>
) 
<collectorName id="26A05325FFAD61451857FB032ED9FB08" pageId="20" pageNumber="471">
ROV 
<emphasis id="B921EAE1FFAD61451894FB3C2B02FB6D" box="[1202,1289,1183,1208]" italics="true" pageId="20" pageNumber="471">Tiburon</emphasis>
dive number 
<date id="FFEB1033FFAD61451CB1FB672ED9FB08" box="[151,210,1220,1245]" pageId="20" pageNumber="471" value="1069-10-01">1069</date>
</collectorName>
, 
<collectingDate id="EFAFE9DBFFAD61451CFBFB672F65FB09" box="[221,366,1220,1244]" pageId="20" pageNumber="471">Oct. 1, 2007</collectingDate>
.
</materialsCitation>
<materialsCitation id="3B3D3CAEFFAD61451D5FFB672A42FB08" ID-GBIF-Occurrence="1821810264" box="[377,1097,1220,1245]" collectedFrom="collected from a natural whale fall (Eschrichtius robustus)" collectingDate="Oct. 1, 2007" collectionCode="SIO-BIC" collectorName="ROV Tiburon dive number 1069" elevation="0" latitude="122.43536" location="Monterey Submarine Canyon" pageId="20" pageNumber="471" specimenCode="7832, FJ347638" specimenCount="1" specimenCount-female="1" typeStatus="allotype">
<typeStatus id="54EE8851FFAD61451D5FFB672FE2FB08" box="[377,489,1220,1245]" pageId="20" pageNumber="471" type="allotype">Allotypes</typeStatus>
, male in the tube of holotype, same catalogue number
</materialsCitation>
. 
<emphasis id="B921EAE1FFAD61451875FB672AC0FB08" bold="true" box="[1107,1227,1220,1245]" pageId="20" pageNumber="471">Paratypes</emphasis>
: Females, fixed in formalin or glutaraldehyde; preserved in formalin, glutaraldehyde or ethanol: SIO-BIC A7833 (GenBank 
<emphasis id="B921EAE1FFAD6145194AFB4B2B96FB2A" box="[1388,1437,1256,1279]" italics="true" pageId="20" pageNumber="471">COI</emphasis>
sequence 
<accessionNumber id="9406AB10FFAD61451D23FAAF2F8DFAF0" box="[261,390,1292,1317]" httpUri="https://www.ebi.ac.uk/ena/browser/api/embl/DQ996622" pageId="20" pageNumber="471">DQ996622</accessionNumber>
), same locality as holotype, ROV 
<emphasis id="B921EAE1FFAD61451F21FAAF2D54FAF0" box="[775,863,1292,1317]" italics="true" pageId="20" pageNumber="471">Tiburon</emphasis>
dive number 769, Nov. 11, 2004; SIO-BIC A1639 (GenBank 
<emphasis id="B921EAE1FFAD61451D32FA932F4EFA92" box="[276,325,1328,1351]" italics="true" pageId="20" pageNumber="471">COI</emphasis>
sequence 
<accessionNumber id="9406AB10FFAD61451D98FA8C2C34FA9D" box="[446,575,1327,1352]" httpUri="https://www.ebi.ac.uk/ena/browser/api/embl/DQ996624" pageId="20" pageNumber="471">DQ996624</accessionNumber>
), same locality as holotype, ROV 
<emphasis id="B921EAE1FFAD61451FE8FA8C2A2EFA9D" box="[974,1061,1327,1352]" italics="true" pageId="20" pageNumber="471">Tiburon</emphasis>
dive number 777, Jan. 6, 2005; SIO-BIC A7834, A7835 (GenBank 
<emphasis id="B921EAE1FFAD61451E0AFAF62C57FAB9" box="[556,604,1365,1388]" italics="true" pageId="20" pageNumber="471">COI</emphasis>
sequence 
<accessionNumber id="9406AB10FFAD61451EF4FAF72D48FAB8" box="[722,835,1364,1389]" httpUri="https://www.ebi.ac.uk/ena/browser/api/embl/FJ347636" pageId="20" pageNumber="471">FJ347636</accessionNumber>
, 
<accessionNumber id="9406AB10FFAD61451F69FAF72DC9FAB8" box="[847,962,1364,1389]" httpUri="https://www.ebi.ac.uk/ena/browser/api/embl/FJ347637" pageId="20" pageNumber="471">FJ347637</accessionNumber>
), same locality as holotype, ROV 
<emphasis id="B921EAE1FFAD61451962FAF72B97FAB8" box="[1348,1436,1364,1389]" italics="true" pageId="20" pageNumber="471">Tiburon</emphasis>
dive number 777, Jan. 6, 2005; SIO-BIC A7838 (no GenBank 
<emphasis id="B921EAE1FFAD61451F54FADB2DA9FA5A" box="[882,930,1400,1423]" italics="true" pageId="20" pageNumber="471">COI</emphasis>
sequence), same locality as holotype, ROV 
<emphasis id="B921EAE1FFAD61451CB1FA3F2EE4FA60" box="[151,239,1436,1461]" italics="true" pageId="20" pageNumber="471">Tiburon</emphasis>
dive number 917, Nov. 6, 2005; SIO-BIC A7836, A7837 (no GenBank 
<emphasis id="B921EAE1FFAD61451803FA3E2A5DFA61" box="[1061,1110,1437,1460]" italics="true" pageId="20" pageNumber="471">COI</emphasis>
sequences), same locality as holotype, ROV 
<emphasis id="B921EAE1FFAD61451D6FFA622FDCFA0D" box="[329,471,1471,1496]" italics="true" pageId="20" pageNumber="471">Doc Ricketts</emphasis>
dive number 98, Nov. 19, 2009. Dwarf males (allotypes), fixed in formalin, preserved in formalin: SIO-BIC A7839 (no GenBank 
<emphasis id="B921EAE1FFAD61451EA7FA462CBAFA29" box="[641,689,1509,1532]" italics="true" pageId="20" pageNumber="471">COI</emphasis>
sequence), still in tube of female, same locality as holotype, ROV 
<emphasis id="B921EAE1FFAD61451CB1F9A42EE4F9F5" box="[151,239,1543,1568]" italics="true" pageId="20" pageNumber="471">Tiburon</emphasis>
dive number 932, Jan. 5, 2006.
</paragraph>
</subSubSection>
<subSubSection id="C34F6578FFAD61441CE1F98F2B9DFE79" lastPageId="21" lastPageNumber="472" pageId="20" pageNumber="471" type="diagnosis">
<paragraph id="8BEA36F3FFAD61451CE1F98F2B97F820" blockId="20.[151,1437,1111,2037]" pageId="20" pageNumber="471">
<emphasis id="B921EAE1FFAD61451CE1F98F2C02F990" bold="true" box="[199,521,1580,1605]" pageId="20" pageNumber="471">Diagnosis and description.</emphasis>
Holotype female (
<figureCitation id="136E2A76FFAD61451EC0F98F2D47F991" box="[742,844,1580,1605]" captionStart="FIGURE 11" captionStartId="23.[151,250,1683,1705]" captionTargetBox="[208,1325,193,1630]" captionTargetId="figure@23.[208,1325,193,1630]" captionTargetPageId="23" captionText="FIGURE 11. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Image of live paratype (SIO-BIC A7837) female, still in tube, collected at 2898 meters in November 2009.Much of trunk is still relatively expanded, but anterior end is contracted(arrow pointsto tip of trunk) and trunk haspulled back along the tube.Mass of fine rootsis attached toseveral small pieces of bone. B. Ventral view of same specimen (SIO-BIC A7837) with sediment-covered part of the tube peeled away to show the transparenttrunk (arrow points to tip of trunk). Large ganglion is visible inventrolateral region of the trunk.C. Close up of dorsal mid-trunk of paratype (SIO-BIC A7837) female,showing oviduct filled with oocytes and an adjacent blood vessel. D. Another close-up of oviduct, more posteriorly near base of trunk, showing some dwarf males in vicinity of oviduct.Oocytes ellipsoidal, 150 µm by 120 µm. E. Living holotype (SIO-BIC A7832) collected October 2007 at 2898 meters with tube dissected open to show main trunk, which has largely ‘deflated’. Oviduct can be seen running along the trunk. Tube also contains lower trunk and ovisac region. Arrow points toposition of where 10 dwarf males were found in lumen of tube against body of the female.F. Close-up of large ganglion in trunk of paratype (SIO-BIC A7837) female, seen in Figure 11B." httpUri="https://zenodo.org/record/1165896/files/figure.png" pageId="20" pageNumber="471">Fig. 11E</figureCitation>
), partially dissected from tightly surrounding tube; trunk demarcated into two regions, main part 5.6 cm long, 3.8 mm wide at base of main trunk, tapering to 2.3 mm at rounded tip of trunk (
<figureCitation id="136E2A76FFAD61451DB8F9D72C09F959" box="[414,514,1652,1677]" captionStart="FIGURE 11" captionStartId="23.[151,250,1683,1705]" captionTargetBox="[208,1325,193,1630]" captionTargetId="figure@23.[208,1325,193,1630]" captionTargetPageId="23" captionText="FIGURE 11. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Image of live paratype (SIO-BIC A7837) female, still in tube, collected at 2898 meters in November 2009.Much of trunk is still relatively expanded, but anterior end is contracted(arrow pointsto tip of trunk) and trunk haspulled back along the tube.Mass of fine rootsis attached toseveral small pieces of bone. B. Ventral view of same specimen (SIO-BIC A7837) with sediment-covered part of the tube peeled away to show the transparenttrunk (arrow points to tip of trunk). Large ganglion is visible inventrolateral region of the trunk.C. Close up of dorsal mid-trunk of paratype (SIO-BIC A7837) female,showing oviduct filled with oocytes and an adjacent blood vessel. D. Another close-up of oviduct, more posteriorly near base of trunk, showing some dwarf males in vicinity of oviduct.Oocytes ellipsoidal, 150 µm by 120 µm. E. Living holotype (SIO-BIC A7832) collected October 2007 at 2898 meters with tube dissected open to show main trunk, which has largely ‘deflated’. Oviduct can be seen running along the trunk. Tube also contains lower trunk and ovisac region. Arrow points toposition of where 10 dwarf males were found in lumen of tube against body of the female.F. Close-up of large ganglion in trunk of paratype (SIO-BIC A7837) female, seen in Figure 11B." httpUri="https://zenodo.org/record/1165896/files/figure.png" pageId="20" pageNumber="471">Fig. 11E</figureCitation>
). Lower trunk widens, greenish in life, and transitions into ovisac (
<figureCitation id="136E2A76FFAD614518C1F9D72B59F959" box="[1255,1362,1652,1677]" captionStart="FIGURE 10" captionStartId="22.[151,250,1714,1736]" captionTargetBox="[204,1246,193,1688]" captionTargetId="figure@22.[204,1246,193,1688]" captionTargetPageId="22" captionText="FIGURE 10. Osedax jabba n. sp., previously Osedax ‘spiral’, sp.1 SBJ-2006. A. Preserved paratype (SIO-BIC A1639) female, highly contracted and still in tube collectedat 2898 meters, Nov. 2004.Note absence of palps. B. Lateral view of trunk of preserved paratype (SIO-BIC A1639), showing oviduct running dorsally along trunk and terminating at anterior end of trunk. C. Dorsal view of posterior region of trunk of preserved paratype (SIO-BIC A1639) showing oviduct emerging from lowertrunk region.D. Lower trunk and ovisacof preserved paratype (SIO-BIC A1639).E. Photomontage lateral view of living paratype (SIO-BIC A7836) collected at 2898 meters, November 2009. Tube has been partly peeled away to reveal inflated trunk.Distal (anterior) part of tubeis intact and contains anterior part of the trunk that is not inflated (arrow).Oviduct is visible dorsally(left)and does not containany oocytes.Cluster of more than20 dwarf malesis present at thebase of the trunk.F. Close up of base of trunk of living paratype (SIO-BIC A7836) in 10E, showing scattered dwarf males lying on its surface. Oviduct is the white line in left of the image.Blood vessel inside transparent trunk is also visible." httpUri="https://zenodo.org/record/1165894/files/figure.png" pageId="20" pageNumber="471">Figs 10D</figureCitation>
, 
<figureCitation id="136E2A76FFAD6145197BF9D72B84F959" box="[1373,1423,1652,1676]" captionStart="FIGURE 12" captionStartId="24.[151,250,1670,1692]" captionTargetBox="[268,1288,193,1629]" captionTargetId="figure@24.[268,1288,193,1633]" captionTargetPageId="24" captionText="FIGURE 12. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Lower trunk and roots and attached bone fragments of live paratype (SIO-BIC A7837) female. Two obvious roots forms; those emerging from ovisac are thick and covered in grey sediment and not directly in contact with bone. These branch into thinner roots that are covered in yellowish sediment. These thinner roots branch as well and cover the pieces of bone. B. Lower trunk and roots and attached bone fragments of preserved paratype (SIO-BIC A7838) collected June 2006 at2898 meters.Large mainroots can be seen emerging from posterior end of ovisac. C–F. Various view of finer roots of paratype (SIO-BIC A7838), showing how they branch and also are in contact with fragments of bone of various sizes. Root surfaces not in contact with the bone are covered in sediment. G. Transverse section (7 µm) of paratype (SIO-BIC A7835), near base of trunk where oviduct has emerged to the outer dorsal surface. As with other Osedax, there is an outer epidermis, circular and longitudinal muscles and glands, as well as two major bloodvessels. However, the majorityof thetrunk interior hasno obvious tissue, except for some minor blood vessels and a few oocytes. This interior space is interpreted here as the coelom. H. Another transverse section (7 µm) of paratype (SIO-BIC A7835) towards the distal (anterior) end of the trunk.The same basic structure as seen in G is also apparent here." httpUri="https://zenodo.org/record/1165898/files/figure.png" pageId="20" pageNumber="471">12B</figureCitation>
). Trunk ‘deflated’ in width, but not contracted in length (
<figureCitation id="136E2A76FFAD61451ED8F9342D6BF965" box="[766,864,1687,1712]" captionStart="FIGURE 11" captionStartId="23.[151,250,1683,1705]" captionTargetBox="[208,1325,193,1630]" captionTargetId="figure@23.[208,1325,193,1630]" captionTargetPageId="23" captionText="FIGURE 11. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Image of live paratype (SIO-BIC A7837) female, still in tube, collected at 2898 meters in November 2009.Much of trunk is still relatively expanded, but anterior end is contracted(arrow pointsto tip of trunk) and trunk haspulled back along the tube.Mass of fine rootsis attached toseveral small pieces of bone. B. Ventral view of same specimen (SIO-BIC A7837) with sediment-covered part of the tube peeled away to show the transparenttrunk (arrow points to tip of trunk). Large ganglion is visible inventrolateral region of the trunk.C. Close up of dorsal mid-trunk of paratype (SIO-BIC A7837) female,showing oviduct filled with oocytes and an adjacent blood vessel. D. Another close-up of oviduct, more posteriorly near base of trunk, showing some dwarf males in vicinity of oviduct.Oocytes ellipsoidal, 150 µm by 120 µm. E. Living holotype (SIO-BIC A7832) collected October 2007 at 2898 meters with tube dissected open to show main trunk, which has largely ‘deflated’. Oviduct can be seen running along the trunk. Tube also contains lower trunk and ovisac region. Arrow points toposition of where 10 dwarf males were found in lumen of tube against body of the female.F. Close-up of large ganglion in trunk of paratype (SIO-BIC A7837) female, seen in Figure 11B." httpUri="https://zenodo.org/record/1165896/files/figure.png" pageId="20" pageNumber="471">Fig. 11E</figureCitation>
), when compared to images of living individuals 
<emphasis id="B921EAE1FFAD614519A0F93A2ECBF901" italics="true" pageId="20" pageNumber="471">in situ</emphasis>
and some collected samples (
<figureCitation id="136E2A76FFAD61451E30F91F2C55F901" box="[534,606,1724,1749]" captionStart="FIGURE 9" captionStartId="21.[151,250,1723,1745]" captionTargetBox="[151,1436,625,1701]" captionTargetId="figure@21.[151,1436,625,1701]" captionTargetPageId="21" captionText="FIGURE 9. Osedax jabba n. sp., previously Osedax ‘spiral’, sp.1 SBJ-2006. A. Anterior end of whale fall ‘Ruby’ at 2898 meters in September 2004. Baleen is prominent on surface of sediment in foreground with tubes (white arrows) of large chaetopterid annelidPhyllochaetopterus gigas(see Nishi &amp;Rouse 2014).Littlebone obvious on sedimentsurface.Background has a cluster of more than10 Osedax jabban. sp. (blackarrow) with their tubes coming directly outof the sediment.B. Cluster of more the 10 (black arrows) Osedax jabba n. sp. at 2898 meters in November 2004. No obvious bone on the sediment surface. C. Two specimens of Osedax jabba n. sp. at 2898 meters in November 2005. Two prominent red blood vessels are visiblethroughthe tube ofeach specimen and theseindicate the trunk is occupyingwholeof tube and iscoiled anteriorly.Trunk does not appear to emerge from tube. D. Lateral view of an Osedax jabba n. sp. specimen emerging from sediment surface, though adjacent to a piece of bone, at 2898 meters in January 2006.Blood vessels are visible, indicating trunk is filling tube." httpUri="https://zenodo.org/record/1165892/files/figure.png" pageId="20" pageNumber="471">Figs 9</figureCitation>
A-D, 10A-E 11A, B). Crown absent, no palps or emergent oviduct (
<figureCitation id="136E2A76FFAD6145194CF91F2EAFF92D" captionStart="FIGURE 9" captionStartId="21.[151,250,1723,1745]" captionTargetBox="[151,1436,625,1701]" captionTargetId="figure@21.[151,1436,625,1701]" captionTargetPageId="21" captionText="FIGURE 9. Osedax jabba n. sp., previously Osedax ‘spiral’, sp.1 SBJ-2006. A. Anterior end of whale fall ‘Ruby’ at 2898 meters in September 2004. Baleen is prominent on surface of sediment in foreground with tubes (white arrows) of large chaetopterid annelidPhyllochaetopterus gigas(see Nishi &amp;Rouse 2014).Littlebone obvious on sedimentsurface.Background has a cluster of more than10 Osedax jabban. sp. (blackarrow) with their tubes coming directly outof the sediment.B. Cluster of more the 10 (black arrows) Osedax jabba n. sp. at 2898 meters in November 2004. No obvious bone on the sediment surface. C. Two specimens of Osedax jabba n. sp. at 2898 meters in November 2005. Two prominent red blood vessels are visiblethroughthe tube ofeach specimen and theseindicate the trunk is occupyingwholeof tube and iscoiled anteriorly.Trunk does not appear to emerge from tube. D. Lateral view of an Osedax jabba n. sp. specimen emerging from sediment surface, though adjacent to a piece of bone, at 2898 meters in January 2006.Blood vessels are visible, indicating trunk is filling tube." httpUri="https://zenodo.org/record/1165892/files/figure.png" pageId="20" pageNumber="471">Figs 9</figureCitation>
A-D, 10A-E 11A, B). Trunk and ovisac enclosed in tube in life (
<figureCitation id="136E2A76FFAD61451FA3F97C2DC7F92D" box="[901,972,1759,1784]" captionStart="FIGURE 9" captionStartId="21.[151,250,1723,1745]" captionTargetBox="[151,1436,625,1701]" captionTargetId="figure@21.[151,1436,625,1701]" captionTargetPageId="21" captionText="FIGURE 9. Osedax jabba n. sp., previously Osedax ‘spiral’, sp.1 SBJ-2006. A. Anterior end of whale fall ‘Ruby’ at 2898 meters in September 2004. Baleen is prominent on surface of sediment in foreground with tubes (white arrows) of large chaetopterid annelidPhyllochaetopterus gigas(see Nishi &amp;Rouse 2014).Littlebone obvious on sedimentsurface.Background has a cluster of more than10 Osedax jabban. sp. (blackarrow) with their tubes coming directly outof the sediment.B. Cluster of more the 10 (black arrows) Osedax jabba n. sp. at 2898 meters in November 2004. No obvious bone on the sediment surface. C. Two specimens of Osedax jabba n. sp. at 2898 meters in November 2005. Two prominent red blood vessels are visiblethroughthe tube ofeach specimen and theseindicate the trunk is occupyingwholeof tube and iscoiled anteriorly.Trunk does not appear to emerge from tube. D. Lateral view of an Osedax jabba n. sp. specimen emerging from sediment surface, though adjacent to a piece of bone, at 2898 meters in January 2006.Blood vessels are visible, indicating trunk is filling tube." httpUri="https://zenodo.org/record/1165892/files/figure.png" pageId="20" pageNumber="471">Figs 9</figureCitation>
A-D, 10A, 11A); preserved holotype has trunk occupying entire tube. Other specimens with trunk contracted to varying degrees within tube (
<figureCitation id="136E2A76FFAD6145192CF8A72B9CF8C9" box="[1290,1431,1796,1821]" captionStart="FIGURE 10" captionStartId="22.[151,250,1714,1736]" captionTargetBox="[204,1246,193,1688]" captionTargetId="figure@22.[204,1246,193,1688]" captionTargetPageId="22" captionText="FIGURE 10. Osedax jabba n. sp., previously Osedax ‘spiral’, sp.1 SBJ-2006. A. Preserved paratype (SIO-BIC A1639) female, highly contracted and still in tube collectedat 2898 meters, Nov. 2004.Note absence of palps. B. Lateral view of trunk of preserved paratype (SIO-BIC A1639), showing oviduct running dorsally along trunk and terminating at anterior end of trunk. C. Dorsal view of posterior region of trunk of preserved paratype (SIO-BIC A1639) showing oviduct emerging from lowertrunk region.D. Lower trunk and ovisacof preserved paratype (SIO-BIC A1639).E. Photomontage lateral view of living paratype (SIO-BIC A7836) collected at 2898 meters, November 2009. Tube has been partly peeled away to reveal inflated trunk.Distal (anterior) part of tubeis intact and contains anterior part of the trunk that is not inflated (arrow).Oviduct is visible dorsally(left)and does not containany oocytes.Cluster of more than20 dwarf malesis present at thebase of the trunk.F. Close up of base of trunk of living paratype (SIO-BIC A7836) in 10E, showing scattered dwarf males lying on its surface. Oviduct is the white line in left of the image.Blood vessel inside transparent trunk is also visible." httpUri="https://zenodo.org/record/1165894/files/figure.png" pageId="20" pageNumber="471">Figs 10A, E</figureCitation>
, 
<figureCitation id="136E2A76FFAD61451CB1F88B2EE2F895" box="[151,233,1832,1856]" captionStart="FIGURE 11" captionStartId="23.[151,250,1683,1705]" captionTargetBox="[208,1325,193,1630]" captionTargetId="figure@23.[208,1325,193,1630]" captionTargetPageId="23" captionText="FIGURE 11. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Image of live paratype (SIO-BIC A7837) female, still in tube, collected at 2898 meters in November 2009.Much of trunk is still relatively expanded, but anterior end is contracted(arrow pointsto tip of trunk) and trunk haspulled back along the tube.Mass of fine rootsis attached toseveral small pieces of bone. B. Ventral view of same specimen (SIO-BIC A7837) with sediment-covered part of the tube peeled away to show the transparenttrunk (arrow points to tip of trunk). Large ganglion is visible inventrolateral region of the trunk.C. Close up of dorsal mid-trunk of paratype (SIO-BIC A7837) female,showing oviduct filled with oocytes and an adjacent blood vessel. D. Another close-up of oviduct, more posteriorly near base of trunk, showing some dwarf males in vicinity of oviduct.Oocytes ellipsoidal, 150 µm by 120 µm. E. Living holotype (SIO-BIC A7832) collected October 2007 at 2898 meters with tube dissected open to show main trunk, which has largely ‘deflated’. Oviduct can be seen running along the trunk. Tube also contains lower trunk and ovisac region. Arrow points toposition of where 10 dwarf males were found in lumen of tube against body of the female.F. Close-up of large ganglion in trunk of paratype (SIO-BIC A7837) female, seen in Figure 11B." httpUri="https://zenodo.org/record/1165896/files/figure.png" pageId="20" pageNumber="471">11A, B</figureCitation>
). Oviduct (
<figureCitation id="136E2A76FFAD61451D4EF8842FB2F895" box="[360,441,1831,1856]" captionStart="FIGURE 11" captionStartId="23.[151,250,1683,1705]" captionTargetBox="[208,1325,193,1630]" captionTargetId="figure@23.[208,1325,193,1630]" captionTargetPageId="23" captionText="FIGURE 11. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Image of live paratype (SIO-BIC A7837) female, still in tube, collected at 2898 meters in November 2009.Much of trunk is still relatively expanded, but anterior end is contracted(arrow pointsto tip of trunk) and trunk haspulled back along the tube.Mass of fine rootsis attached toseveral small pieces of bone. B. Ventral view of same specimen (SIO-BIC A7837) with sediment-covered part of the tube peeled away to show the transparenttrunk (arrow points to tip of trunk). Large ganglion is visible inventrolateral region of the trunk.C. Close up of dorsal mid-trunk of paratype (SIO-BIC A7837) female,showing oviduct filled with oocytes and an adjacent blood vessel. D. Another close-up of oviduct, more posteriorly near base of trunk, showing some dwarf males in vicinity of oviduct.Oocytes ellipsoidal, 150 µm by 120 µm. E. Living holotype (SIO-BIC A7832) collected October 2007 at 2898 meters with tube dissected open to show main trunk, which has largely ‘deflated’. Oviduct can be seen running along the trunk. Tube also contains lower trunk and ovisac region. Arrow points toposition of where 10 dwarf males were found in lumen of tube against body of the female.F. Close-up of large ganglion in trunk of paratype (SIO-BIC A7837) female, seen in Figure 11B." httpUri="https://zenodo.org/record/1165896/files/figure.png" pageId="20" pageNumber="471">Figs 11</figureCitation>
C-E) runs dorsally along length of trunk from lower trunk/ovisac to trunk tip (
<figureCitation id="136E2A76FFAD6145190CF8842B76F895" box="[1322,1405,1831,1856]" captionStart="FIGURE 10" captionStartId="22.[151,250,1714,1736]" captionTargetBox="[204,1246,193,1688]" captionTargetId="figure@22.[204,1246,193,1688]" captionTargetPageId="22" captionText="FIGURE 10. Osedax jabba n. sp., previously Osedax ‘spiral’, sp.1 SBJ-2006. A. Preserved paratype (SIO-BIC A1639) female, highly contracted and still in tube collectedat 2898 meters, Nov. 2004.Note absence of palps. B. Lateral view of trunk of preserved paratype (SIO-BIC A1639), showing oviduct running dorsally along trunk and terminating at anterior end of trunk. C. Dorsal view of posterior region of trunk of preserved paratype (SIO-BIC A1639) showing oviduct emerging from lowertrunk region.D. Lower trunk and ovisacof preserved paratype (SIO-BIC A1639).E. Photomontage lateral view of living paratype (SIO-BIC A7836) collected at 2898 meters, November 2009. Tube has been partly peeled away to reveal inflated trunk.Distal (anterior) part of tubeis intact and contains anterior part of the trunk that is not inflated (arrow).Oviduct is visible dorsally(left)and does not containany oocytes.Cluster of more than20 dwarf malesis present at thebase of the trunk.F. Close up of base of trunk of living paratype (SIO-BIC A7836) in 10E, showing scattered dwarf males lying on its surface. Oviduct is the white line in left of the image.Blood vessel inside transparent trunk is also visible." httpUri="https://zenodo.org/record/1165894/files/figure.png" pageId="20" pageNumber="471">Figs 10</figureCitation>
A- C, 11E). Main trunk color pink in live ‘contracted’ individuals (
<figureCitation id="136E2A76FFAD61451F7DF8EF2DA5F8B1" box="[859,942,1868,1893]" captionStart="FIGURE 10" captionStartId="22.[151,250,1714,1736]" captionTargetBox="[204,1246,193,1688]" captionTargetId="figure@22.[204,1246,193,1688]" captionTargetPageId="22" captionText="FIGURE 10. Osedax jabba n. sp., previously Osedax ‘spiral’, sp.1 SBJ-2006. A. Preserved paratype (SIO-BIC A1639) female, highly contracted and still in tube collectedat 2898 meters, Nov. 2004.Note absence of palps. B. Lateral view of trunk of preserved paratype (SIO-BIC A1639), showing oviduct running dorsally along trunk and terminating at anterior end of trunk. C. Dorsal view of posterior region of trunk of preserved paratype (SIO-BIC A1639) showing oviduct emerging from lowertrunk region.D. Lower trunk and ovisacof preserved paratype (SIO-BIC A1639).E. Photomontage lateral view of living paratype (SIO-BIC A7836) collected at 2898 meters, November 2009. Tube has been partly peeled away to reveal inflated trunk.Distal (anterior) part of tubeis intact and contains anterior part of the trunk that is not inflated (arrow).Oviduct is visible dorsally(left)and does not containany oocytes.Cluster of more than20 dwarf malesis present at thebase of the trunk.F. Close up of base of trunk of living paratype (SIO-BIC A7836) in 10E, showing scattered dwarf males lying on its surface. Oviduct is the white line in left of the image.Blood vessel inside transparent trunk is also visible." httpUri="https://zenodo.org/record/1165894/files/figure.png" pageId="20" pageNumber="471">Figs 10</figureCitation>
A-D, 11E). In ‘inflated’ individuals, trunk is translucent (
<figureCitation id="136E2A76FFAD61451D03F8CC2F9AF85D" box="[293,401,1903,1928]" captionStart="FIGURE 10" captionStartId="22.[151,250,1714,1736]" captionTargetBox="[204,1246,193,1688]" captionTargetId="figure@22.[204,1246,193,1688]" captionTargetPageId="22" captionText="FIGURE 10. Osedax jabba n. sp., previously Osedax ‘spiral’, sp.1 SBJ-2006. A. Preserved paratype (SIO-BIC A1639) female, highly contracted and still in tube collectedat 2898 meters, Nov. 2004.Note absence of palps. B. Lateral view of trunk of preserved paratype (SIO-BIC A1639), showing oviduct running dorsally along trunk and terminating at anterior end of trunk. C. Dorsal view of posterior region of trunk of preserved paratype (SIO-BIC A1639) showing oviduct emerging from lowertrunk region.D. Lower trunk and ovisacof preserved paratype (SIO-BIC A1639).E. Photomontage lateral view of living paratype (SIO-BIC A7836) collected at 2898 meters, November 2009. Tube has been partly peeled away to reveal inflated trunk.Distal (anterior) part of tubeis intact and contains anterior part of the trunk that is not inflated (arrow).Oviduct is visible dorsally(left)and does not containany oocytes.Cluster of more than20 dwarf malesis present at thebase of the trunk.F. Close up of base of trunk of living paratype (SIO-BIC A7836) in 10E, showing scattered dwarf males lying on its surface. Oviduct is the white line in left of the image.Blood vessel inside transparent trunk is also visible." httpUri="https://zenodo.org/record/1165894/files/figure.png" pageId="20" pageNumber="471">Figs 10E</figureCitation>
, 
<figureCitation id="136E2A76FFAD61451D87F8D32FD9F85D" box="[417,466,1904,1928]" captionStart="FIGURE 11" captionStartId="23.[151,250,1683,1705]" captionTargetBox="[208,1325,193,1630]" captionTargetId="figure@23.[208,1325,193,1630]" captionTargetPageId="23" captionText="FIGURE 11. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Image of live paratype (SIO-BIC A7837) female, still in tube, collected at 2898 meters in November 2009.Much of trunk is still relatively expanded, but anterior end is contracted(arrow pointsto tip of trunk) and trunk haspulled back along the tube.Mass of fine rootsis attached toseveral small pieces of bone. B. Ventral view of same specimen (SIO-BIC A7837) with sediment-covered part of the tube peeled away to show the transparenttrunk (arrow points to tip of trunk). Large ganglion is visible inventrolateral region of the trunk.C. Close up of dorsal mid-trunk of paratype (SIO-BIC A7837) female,showing oviduct filled with oocytes and an adjacent blood vessel. D. Another close-up of oviduct, more posteriorly near base of trunk, showing some dwarf males in vicinity of oviduct.Oocytes ellipsoidal, 150 µm by 120 µm. E. Living holotype (SIO-BIC A7832) collected October 2007 at 2898 meters with tube dissected open to show main trunk, which has largely ‘deflated’. Oviduct can be seen running along the trunk. Tube also contains lower trunk and ovisac region. Arrow points toposition of where 10 dwarf males were found in lumen of tube against body of the female.F. Close-up of large ganglion in trunk of paratype (SIO-BIC A7837) female, seen in Figure 11B." httpUri="https://zenodo.org/record/1165896/files/figure.png" pageId="20" pageNumber="471">11B</figureCitation>
). Trunk in cross section shows extensive outer musculature and glands. Prominent dorsal and ventral blood vessels present as well as smaller vessels. Otherwise trunk is largely ‘empty’ with a few oocytes present and may filled (and inflatable) with coelomic fluid. (
<figureCitation id="136E2A76FFAD61451FF2F81B2A60F805" box="[980,1131,1976,2001]" captionStart="FIGURE 12" captionStartId="24.[151,250,1670,1692]" captionTargetBox="[268,1288,193,1629]" captionTargetId="figure@24.[268,1288,193,1633]" captionTargetPageId="24" captionText="FIGURE 12. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Lower trunk and roots and attached bone fragments of live paratype (SIO-BIC A7837) female. Two obvious roots forms; those emerging from ovisac are thick and covered in grey sediment and not directly in contact with bone. These branch into thinner roots that are covered in yellowish sediment. These thinner roots branch as well and cover the pieces of bone. B. Lower trunk and roots and attached bone fragments of preserved paratype (SIO-BIC A7838) collected June 2006 at2898 meters.Large mainroots can be seen emerging from posterior end of ovisac. C–F. Various view of finer roots of paratype (SIO-BIC A7838), showing how they branch and also are in contact with fragments of bone of various sizes. Root surfaces not in contact with the bone are covered in sediment. G. Transverse section (7 µm) of paratype (SIO-BIC A7835), near base of trunk where oviduct has emerged to the outer dorsal surface. As with other Osedax, there is an outer epidermis, circular and longitudinal muscles and glands, as well as two major bloodvessels. However, the majorityof thetrunk interior hasno obvious tissue, except for some minor blood vessels and a few oocytes. This interior space is interpreted here as the coelom. H. Another transverse section (7 µm) of paratype (SIO-BIC A7835) towards the distal (anterior) end of the trunk.The same basic structure as seen in G is also apparent here." httpUri="https://zenodo.org/record/1165898/files/figure.png" pageId="20" pageNumber="471">Figs 12G, H</figureCitation>
). A single large ganglion ventrolaterally in the mid-trunk region (
<figureCitation id="136E2A76FFAD61451E4EF87F2CFCF821" box="[616,759,2012,2037]" captionStart="FIGURE 11" captionStartId="23.[151,250,1683,1705]" captionTargetBox="[208,1325,193,1630]" captionTargetId="figure@23.[208,1325,193,1630]" captionTargetPageId="23" captionText="FIGURE 11. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Image of live paratype (SIO-BIC A7837) female, still in tube, collected at 2898 meters in November 2009.Much of trunk is still relatively expanded, but anterior end is contracted(arrow pointsto tip of trunk) and trunk haspulled back along the tube.Mass of fine rootsis attached toseveral small pieces of bone. B. Ventral view of same specimen (SIO-BIC A7837) with sediment-covered part of the tube peeled away to show the transparenttrunk (arrow points to tip of trunk). Large ganglion is visible inventrolateral region of the trunk.C. Close up of dorsal mid-trunk of paratype (SIO-BIC A7837) female,showing oviduct filled with oocytes and an adjacent blood vessel. D. Another close-up of oviduct, more posteriorly near base of trunk, showing some dwarf males in vicinity of oviduct.Oocytes ellipsoidal, 150 µm by 120 µm. E. Living holotype (SIO-BIC A7832) collected October 2007 at 2898 meters with tube dissected open to show main trunk, which has largely ‘deflated’. Oviduct can be seen running along the trunk. Tube also contains lower trunk and ovisac region. Arrow points toposition of where 10 dwarf males were found in lumen of tube against body of the female.F. Close-up of large ganglion in trunk of paratype (SIO-BIC A7837) female, seen in Figure 11B." httpUri="https://zenodo.org/record/1165896/files/figure.png" pageId="20" pageNumber="471">Figs 11B, F</figureCitation>
). Lower trunk, demarcated by emergence of oviduct (
<figureCitation id="136E2A76FFAD61451949F87F2B97F820" box="[1391,1436,2012,2037]" captionStart="FIGURE 12" captionStartId="24.[151,250,1670,1692]" captionTargetBox="[268,1288,193,1629]" captionTargetId="figure@24.[268,1288,193,1633]" captionTargetPageId="24" captionText="FIGURE 12. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Lower trunk and roots and attached bone fragments of live paratype (SIO-BIC A7837) female. Two obvious roots forms; those emerging from ovisac are thick and covered in grey sediment and not directly in contact with bone. These branch into thinner roots that are covered in yellowish sediment. These thinner roots branch as well and cover the pieces of bone. B. Lower trunk and roots and attached bone fragments of preserved paratype (SIO-BIC A7838) collected June 2006 at2898 meters.Large mainroots can be seen emerging from posterior end of ovisac. C–F. Various view of finer roots of paratype (SIO-BIC A7838), showing how they branch and also are in contact with fragments of bone of various sizes. Root surfaces not in contact with the bone are covered in sediment. G. Transverse section (7 µm) of paratype (SIO-BIC A7835), near base of trunk where oviduct has emerged to the outer dorsal surface. As with other Osedax, there is an outer epidermis, circular and longitudinal muscles and glands, as well as two major bloodvessels. However, the majorityof thetrunk interior hasno obvious tissue, except for some minor blood vessels and a few oocytes. This interior space is interpreted here as the coelom. H. Another transverse section (7 µm) of paratype (SIO-BIC A7835) towards the distal (anterior) end of the trunk.The same basic structure as seen in G is also apparent here." httpUri="https://zenodo.org/record/1165898/files/figure.png" pageId="20" pageNumber="471">Fig.</figureCitation>
</paragraph>
<paragraph id="8BEA36F3FFAC61441CB1FF3B2B9DFE79" blockId="21.[151,1436,151,573]" pageId="21" pageNumber="472">
12B), transitions to white cylindrical ovisac, wider than trunk, encased in the base of tube and extending posteriorly into sediment (
<figureCitation id="136E2A76FFAC61441D1AFF1F2FACFF01" box="[316,423,188,213]" captionStart="FIGURE 10" captionStartId="22.[151,250,1714,1736]" captionTargetBox="[204,1246,193,1688]" captionTargetId="figure@22.[204,1246,193,1688]" captionTargetPageId="22" captionText="FIGURE 10. Osedax jabba n. sp., previously Osedax ‘spiral’, sp.1 SBJ-2006. A. Preserved paratype (SIO-BIC A1639) female, highly contracted and still in tube collectedat 2898 meters, Nov. 2004.Note absence of palps. B. Lateral view of trunk of preserved paratype (SIO-BIC A1639), showing oviduct running dorsally along trunk and terminating at anterior end of trunk. C. Dorsal view of posterior region of trunk of preserved paratype (SIO-BIC A1639) showing oviduct emerging from lowertrunk region.D. Lower trunk and ovisacof preserved paratype (SIO-BIC A1639).E. Photomontage lateral view of living paratype (SIO-BIC A7836) collected at 2898 meters, November 2009. Tube has been partly peeled away to reveal inflated trunk.Distal (anterior) part of tubeis intact and contains anterior part of the trunk that is not inflated (arrow).Oviduct is visible dorsally(left)and does not containany oocytes.Cluster of more than20 dwarf malesis present at thebase of the trunk.F. Close up of base of trunk of living paratype (SIO-BIC A7836) in 10E, showing scattered dwarf males lying on its surface. Oviduct is the white line in left of the image.Blood vessel inside transparent trunk is also visible." httpUri="https://zenodo.org/record/1165894/files/figure.png" pageId="21" pageNumber="472">Figs 10D</figureCitation>
, 
<figureCitation id="136E2A76FFAC61441D95FF1F2C09FF01" box="[435,514,188,212]" captionStart="FIGURE 11" captionStartId="23.[151,250,1683,1705]" captionTargetBox="[208,1325,193,1630]" captionTargetId="figure@23.[208,1325,193,1630]" captionTargetPageId="23" captionText="FIGURE 11. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Image of live paratype (SIO-BIC A7837) female, still in tube, collected at 2898 meters in November 2009.Much of trunk is still relatively expanded, but anterior end is contracted(arrow pointsto tip of trunk) and trunk haspulled back along the tube.Mass of fine rootsis attached toseveral small pieces of bone. B. Ventral view of same specimen (SIO-BIC A7837) with sediment-covered part of the tube peeled away to show the transparenttrunk (arrow points to tip of trunk). Large ganglion is visible inventrolateral region of the trunk.C. Close up of dorsal mid-trunk of paratype (SIO-BIC A7837) female,showing oviduct filled with oocytes and an adjacent blood vessel. D. Another close-up of oviduct, more posteriorly near base of trunk, showing some dwarf males in vicinity of oviduct.Oocytes ellipsoidal, 150 µm by 120 µm. E. Living holotype (SIO-BIC A7832) collected October 2007 at 2898 meters with tube dissected open to show main trunk, which has largely ‘deflated’. Oviduct can be seen running along the trunk. Tube also contains lower trunk and ovisac region. Arrow points toposition of where 10 dwarf males were found in lumen of tube against body of the female.F. Close-up of large ganglion in trunk of paratype (SIO-BIC A7837) female, seen in Figure 11B." httpUri="https://zenodo.org/record/1165896/files/figure.png" pageId="21" pageNumber="472">11A, E</figureCitation>
, 
<figureCitation id="136E2A76FFAC61441E28FF1F2C4BFF01" box="[526,576,188,212]" captionStart="FIGURE 12" captionStartId="24.[151,250,1670,1692]" captionTargetBox="[268,1288,193,1629]" captionTargetId="figure@24.[268,1288,193,1633]" captionTargetPageId="24" captionText="FIGURE 12. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Lower trunk and roots and attached bone fragments of live paratype (SIO-BIC A7837) female. Two obvious roots forms; those emerging from ovisac are thick and covered in grey sediment and not directly in contact with bone. These branch into thinner roots that are covered in yellowish sediment. These thinner roots branch as well and cover the pieces of bone. B. Lower trunk and roots and attached bone fragments of preserved paratype (SIO-BIC A7838) collected June 2006 at2898 meters.Large mainroots can be seen emerging from posterior end of ovisac. C–F. Various view of finer roots of paratype (SIO-BIC A7838), showing how they branch and also are in contact with fragments of bone of various sizes. Root surfaces not in contact with the bone are covered in sediment. G. Transverse section (7 µm) of paratype (SIO-BIC A7835), near base of trunk where oviduct has emerged to the outer dorsal surface. As with other Osedax, there is an outer epidermis, circular and longitudinal muscles and glands, as well as two major bloodvessels. However, the majorityof thetrunk interior hasno obvious tissue, except for some minor blood vessels and a few oocytes. This interior space is interpreted here as the coelom. H. Another transverse section (7 µm) of paratype (SIO-BIC A7835) towards the distal (anterior) end of the trunk.The same basic structure as seen in G is also apparent here." httpUri="https://zenodo.org/record/1165898/files/figure.png" pageId="21" pageNumber="472">12B</figureCitation>
). Ovisac wall translucent with ovaries visible inside (
<figureCitation id="136E2A76FFAC614418B5FF1F2AF5FF01" box="[1171,1278,188,213]" captionStart="FIGURE 10" captionStartId="22.[151,250,1714,1736]" captionTargetBox="[204,1246,193,1688]" captionTargetId="figure@22.[204,1246,193,1688]" captionTargetPageId="22" captionText="FIGURE 10. Osedax jabba n. sp., previously Osedax ‘spiral’, sp.1 SBJ-2006. A. Preserved paratype (SIO-BIC A1639) female, highly contracted and still in tube collectedat 2898 meters, Nov. 2004.Note absence of palps. B. Lateral view of trunk of preserved paratype (SIO-BIC A1639), showing oviduct running dorsally along trunk and terminating at anterior end of trunk. C. Dorsal view of posterior region of trunk of preserved paratype (SIO-BIC A1639) showing oviduct emerging from lowertrunk region.D. Lower trunk and ovisacof preserved paratype (SIO-BIC A1639).E. Photomontage lateral view of living paratype (SIO-BIC A7836) collected at 2898 meters, November 2009. Tube has been partly peeled away to reveal inflated trunk.Distal (anterior) part of tubeis intact and contains anterior part of the trunk that is not inflated (arrow).Oviduct is visible dorsally(left)and does not containany oocytes.Cluster of more than20 dwarf malesis present at thebase of the trunk.F. Close up of base of trunk of living paratype (SIO-BIC A7836) in 10E, showing scattered dwarf males lying on its surface. Oviduct is the white line in left of the image.Blood vessel inside transparent trunk is also visible." httpUri="https://zenodo.org/record/1165894/files/figure.png" pageId="21" pageNumber="472">Figs 10D</figureCitation>
, 
<figureCitation id="136E2A76FFAC6144192FFF1F2B30FF01" box="[1289,1339,188,212]" captionStart="FIGURE 12" captionStartId="24.[151,250,1670,1692]" captionTargetBox="[268,1288,193,1629]" captionTargetId="figure@24.[268,1288,193,1633]" captionTargetPageId="24" captionText="FIGURE 12. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Lower trunk and roots and attached bone fragments of live paratype (SIO-BIC A7837) female. Two obvious roots forms; those emerging from ovisac are thick and covered in grey sediment and not directly in contact with bone. These branch into thinner roots that are covered in yellowish sediment. These thinner roots branch as well and cover the pieces of bone. B. Lower trunk and roots and attached bone fragments of preserved paratype (SIO-BIC A7838) collected June 2006 at2898 meters.Large mainroots can be seen emerging from posterior end of ovisac. C–F. Various view of finer roots of paratype (SIO-BIC A7838), showing how they branch and also are in contact with fragments of bone of various sizes. Root surfaces not in contact with the bone are covered in sediment. G. Transverse section (7 µm) of paratype (SIO-BIC A7835), near base of trunk where oviduct has emerged to the outer dorsal surface. As with other Osedax, there is an outer epidermis, circular and longitudinal muscles and glands, as well as two major bloodvessels. However, the majorityof thetrunk interior hasno obvious tissue, except for some minor blood vessels and a few oocytes. This interior space is interpreted here as the coelom. H. Another transverse section (7 µm) of paratype (SIO-BIC A7835) towards the distal (anterior) end of the trunk.The same basic structure as seen in G is also apparent here." httpUri="https://zenodo.org/record/1165898/files/figure.png" pageId="21" pageNumber="472">12B</figureCitation>
). Ovisac wall tissue extends posteriorly, becomes sediment encrusted and branches out forming a large root mass extending and branching in all directions (
<figureCitation id="136E2A76FFAC61441DDAFEA72C6DFEC9" box="[508,614,260,285]" captionStart="FIGURE 11" captionStartId="23.[151,250,1683,1705]" captionTargetBox="[208,1325,193,1630]" captionTargetId="figure@23.[208,1325,193,1630]" captionTargetPageId="23" captionText="FIGURE 11. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Image of live paratype (SIO-BIC A7837) female, still in tube, collected at 2898 meters in November 2009.Much of trunk is still relatively expanded, but anterior end is contracted(arrow pointsto tip of trunk) and trunk haspulled back along the tube.Mass of fine rootsis attached toseveral small pieces of bone. B. Ventral view of same specimen (SIO-BIC A7837) with sediment-covered part of the tube peeled away to show the transparenttrunk (arrow points to tip of trunk). Large ganglion is visible inventrolateral region of the trunk.C. Close up of dorsal mid-trunk of paratype (SIO-BIC A7837) female,showing oviduct filled with oocytes and an adjacent blood vessel. D. Another close-up of oviduct, more posteriorly near base of trunk, showing some dwarf males in vicinity of oviduct.Oocytes ellipsoidal, 150 µm by 120 µm. E. Living holotype (SIO-BIC A7832) collected October 2007 at 2898 meters with tube dissected open to show main trunk, which has largely ‘deflated’. Oviduct can be seen running along the trunk. Tube also contains lower trunk and ovisac region. Arrow points toposition of where 10 dwarf males were found in lumen of tube against body of the female.F. Close-up of large ganglion in trunk of paratype (SIO-BIC A7837) female, seen in Figure 11B." httpUri="https://zenodo.org/record/1165896/files/figure.png" pageId="21" pageNumber="472">Figs 11A</figureCitation>
, 
<figureCitation id="136E2A76FFAC61441E54FEA72C86FEC9" box="[626,653,260,284]" captionStart="FIGURE 12" captionStartId="24.[151,250,1670,1692]" captionTargetBox="[268,1288,193,1629]" captionTargetId="figure@24.[268,1288,193,1633]" captionTargetPageId="24" captionText="FIGURE 12. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Lower trunk and roots and attached bone fragments of live paratype (SIO-BIC A7837) female. Two obvious roots forms; those emerging from ovisac are thick and covered in grey sediment and not directly in contact with bone. These branch into thinner roots that are covered in yellowish sediment. These thinner roots branch as well and cover the pieces of bone. B. Lower trunk and roots and attached bone fragments of preserved paratype (SIO-BIC A7838) collected June 2006 at2898 meters.Large mainroots can be seen emerging from posterior end of ovisac. C–F. Various view of finer roots of paratype (SIO-BIC A7838), showing how they branch and also are in contact with fragments of bone of various sizes. Root surfaces not in contact with the bone are covered in sediment. G. Transverse section (7 µm) of paratype (SIO-BIC A7835), near base of trunk where oviduct has emerged to the outer dorsal surface. As with other Osedax, there is an outer epidermis, circular and longitudinal muscles and glands, as well as two major bloodvessels. However, the majorityof thetrunk interior hasno obvious tissue, except for some minor blood vessels and a few oocytes. This interior space is interpreted here as the coelom. H. Another transverse section (7 µm) of paratype (SIO-BIC A7835) towards the distal (anterior) end of the trunk.The same basic structure as seen in G is also apparent here." httpUri="https://zenodo.org/record/1165898/files/figure.png" pageId="21" pageNumber="472">12</figureCitation>
A-F). Ends of the roots are attached to various bone fragments. Roots largely covered in sediment, either light brown or orange. Fine ends of roots branching over and attached to surfaces of bone fragments (
<figureCitation id="136E2A76FFAC61441DF1FEEF2C20FEB1" box="[471,555,332,357]" captionStart="FIGURE 12" captionStartId="24.[151,250,1670,1692]" captionTargetBox="[268,1288,193,1629]" captionTargetId="figure@24.[268,1288,193,1633]" captionTargetPageId="24" captionText="FIGURE 12. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Lower trunk and roots and attached bone fragments of live paratype (SIO-BIC A7837) female. Two obvious roots forms; those emerging from ovisac are thick and covered in grey sediment and not directly in contact with bone. These branch into thinner roots that are covered in yellowish sediment. These thinner roots branch as well and cover the pieces of bone. B. Lower trunk and roots and attached bone fragments of preserved paratype (SIO-BIC A7838) collected June 2006 at2898 meters.Large mainroots can be seen emerging from posterior end of ovisac. C–F. Various view of finer roots of paratype (SIO-BIC A7838), showing how they branch and also are in contact with fragments of bone of various sizes. Root surfaces not in contact with the bone are covered in sediment. G. Transverse section (7 µm) of paratype (SIO-BIC A7835), near base of trunk where oviduct has emerged to the outer dorsal surface. As with other Osedax, there is an outer epidermis, circular and longitudinal muscles and glands, as well as two major bloodvessels. However, the majorityof thetrunk interior hasno obvious tissue, except for some minor blood vessels and a few oocytes. This interior space is interpreted here as the coelom. H. Another transverse section (7 µm) of paratype (SIO-BIC A7835) towards the distal (anterior) end of the trunk.The same basic structure as seen in G is also apparent here." httpUri="https://zenodo.org/record/1165898/files/figure.png" pageId="21" pageNumber="472">Figs 12</figureCitation>
A-F). Numerous males in tube of holotype and paratypes, lying in tube lumen near oviduct at base of trunk Figs (10E, F). All dwarfs, ~200 µm long by 50 µm, with anterior prototroch and sperm with spiral nuclei in head region, two posteriorly expanded segments bearing hooked chaetae (
<figureCitation id="136E2A76FFAC61441922FE372B5CFE79" box="[1284,1367,404,429]" captionStart="FIGURE 13" captionStartId="25.[151,250,1243,1265]" captionTargetBox="[151,1436,193,1221]" captionTargetId="figure@25.[151,1436,193,1221]" captionTargetPageId="25" captionText="FIGURE 13. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Cluster of males lying between in tube lumen,in contact with the trunk of a female paratype 4 (SIO-BIC A7836).B. Photomicrographmontage ofmale allotype (SIO- BIC A7839), from tube of paratype 6 (SIO-BIC A7838). Prototroch is visible anteriorly, as is a mass of mature sperm. Some hooks are visible in expanded posterior region. C. Closeup of head showing prototroch and mass of mature sperm. D. Mature sperm squeezed out the head of male.E. Mature sperm.F. Close up of posterior segmented region showing hooked chaetae in pairs on one side of segments 2 and 3. Other chaetae are not in plane of focus." httpUri="https://zenodo.org/record/1165900/files/figure.png" pageId="21" pageNumber="472">Figs 13</figureCitation>
A-F).
</paragraph>
</subSubSection>
<subSubSection id="C34F6578FFAC61441CE1FE142F93FDE8" pageId="21" pageNumber="472" type="distribution">
<paragraph id="8BEA36F3FFAC61441CE1FE142F93FDE8" blockId="21.[151,1436,151,573]" pageId="21" pageNumber="472">
<emphasis id="B921EAE1FFAC61441CE1FE142F6BFE05" bold="true" box="[199,352,439,464]" pageId="21" pageNumber="472">Distribution.</emphasis>
Known only from Monterey Bay, California from 2898 meters depth (
<tableCitation id="C6D70348FFAC6144185EFE142AC4FE05" box="[1144,1231,439,464]" captionStart="TABLE 2" captionStartId="2.[151,239,152,175]" captionText="TABLE 2. Specimen voucher and GenBankaccession numbers for the DNA sequences used in this study. Bold indicates new sequences. COI = cytochrome c oxidase, H3 = Histone H3, other loci are for ribosomal RNA." pageId="21" pageNumber="472">Table 2</tableCitation>
). 
<taxonomicName id="4C554D70FFAC614418C2FE142B75FE05" authority="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek, 2018" authorityName="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek" authorityYear="2018" box="[1252,1406,439,464]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="21" pageNumber="472" phylum="Annelida" rank="species" species="jabba" status="sp. nov.">
<emphasis id="B921EAE1FFAC614418C2FE142B75FE05" box="[1252,1406,439,464]" italics="true" pageId="21" pageNumber="472">Osedax jabba</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A212579AFFAC614419A3FE142EB3FE20" pageId="21" pageNumber="472" rank="species">
<emphasis id="B921EAE1FFAC614419A3FE142EB3FE20" bold="true" pageId="21" pageNumber="472">n. sp.</emphasis>
</taxonomicNameLabel>
was only found in sediment surrounding the natural whale fall at this depth (
<figureCitation id="136E2A76FFAC6144183FFE7F2A6BFE21" box="[1049,1120,476,501]" captionStart="FIGURE 9" captionStartId="21.[151,250,1723,1745]" captionTargetBox="[151,1436,625,1701]" captionTargetId="figure@21.[151,1436,625,1701]" captionTargetPageId="21" captionText="FIGURE 9. Osedax jabba n. sp., previously Osedax ‘spiral’, sp.1 SBJ-2006. A. Anterior end of whale fall ‘Ruby’ at 2898 meters in September 2004. Baleen is prominent on surface of sediment in foreground with tubes (white arrows) of large chaetopterid annelidPhyllochaetopterus gigas(see Nishi &amp;Rouse 2014).Littlebone obvious on sedimentsurface.Background has a cluster of more than10 Osedax jabban. sp. (blackarrow) with their tubes coming directly outof the sediment.B. Cluster of more the 10 (black arrows) Osedax jabba n. sp. at 2898 meters in November 2004. No obvious bone on the sediment surface. C. Two specimens of Osedax jabba n. sp. at 2898 meters in November 2005. Two prominent red blood vessels are visiblethroughthe tube ofeach specimen and theseindicate the trunk is occupyingwholeof tube and iscoiled anteriorly.Trunk does not appear to emerge from tube. D. Lateral view of an Osedax jabba n. sp. specimen emerging from sediment surface, though adjacent to a piece of bone, at 2898 meters in January 2006.Blood vessels are visible, indicating trunk is filling tube." httpUri="https://zenodo.org/record/1165892/files/figure.png" pageId="21" pageNumber="472">Figs 9</figureCitation>
A-D). Most specimens were at the head end of the whale, near a mass of baleen (
<figureCitation id="136E2A76FFAC61441ED0FE5C2D59FDCD" box="[758,850,511,536]" captionStart="FIGURE 9" captionStartId="21.[151,250,1723,1745]" captionTargetBox="[151,1436,625,1701]" captionTargetId="figure@21.[151,1436,625,1701]" captionTargetPageId="21" captionText="FIGURE 9. Osedax jabba n. sp., previously Osedax ‘spiral’, sp.1 SBJ-2006. A. Anterior end of whale fall ‘Ruby’ at 2898 meters in September 2004. Baleen is prominent on surface of sediment in foreground with tubes (white arrows) of large chaetopterid annelidPhyllochaetopterus gigas(see Nishi &amp;Rouse 2014).Littlebone obvious on sedimentsurface.Background has a cluster of more than10 Osedax jabban. sp. (blackarrow) with their tubes coming directly outof the sediment.B. Cluster of more the 10 (black arrows) Osedax jabba n. sp. at 2898 meters in November 2004. No obvious bone on the sediment surface. C. Two specimens of Osedax jabba n. sp. at 2898 meters in November 2005. Two prominent red blood vessels are visiblethroughthe tube ofeach specimen and theseindicate the trunk is occupyingwholeof tube and iscoiled anteriorly.Trunk does not appear to emerge from tube. D. Lateral view of an Osedax jabba n. sp. specimen emerging from sediment surface, though adjacent to a piece of bone, at 2898 meters in January 2006.Blood vessels are visible, indicating trunk is filling tube." httpUri="https://zenodo.org/record/1165892/files/figure.png" pageId="21" pageNumber="472">Fig. 9A</figureCitation>
). All had bone fragments attached to the root mass buried in the sediment.
</paragraph>
</subSubSection>
<caption id="DF2A667BFFAC61441CB1F9182B8FF813" httpUri="https://zenodo.org/record/1165892/files/figure.png" pageId="21" pageNumber="472" targetBox="[151,1436,625,1701]" targetPageId="21">
<paragraph id="8BEA36F3FFAC61441CB1F9182B8FF813" blockId="21.[151,1436,1723,1990]" pageId="21" pageNumber="472">
<emphasis id="B921EAE1FFAC61441CB1F9182FA6F904" bold="true" box="[151,429,1723,1745]" pageId="21" pageNumber="472">
FIGURE 9. 
<taxonomicName id="4C554D70FFAC61441D3BF9182FA6F904" authority="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek, 2018" authorityName="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek" authorityYear="2018" box="[285,429,1723,1745]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="21" pageNumber="472" phylum="Annelida" rank="species" species="jabba" status="sp. nov.">
<emphasis id="B921EAE1FFAC61441D3BF9182FA6F904" bold="true" box="[285,429,1723,1745]" italics="true" pageId="21" pageNumber="472">Osedax jabba</emphasis>
</taxonomicName>
</emphasis>
<taxonomicNameLabel id="A212579AFFAC61441D93F9182FFBF904" box="[437,496,1723,1745]" pageId="21" pageNumber="472" rank="species">
<emphasis id="B921EAE1FFAC61441D93F9182FE0F905" bold="true" box="[437,491,1723,1744]" pageId="21" pageNumber="472">n. sp</emphasis>
.
</taxonomicNameLabel>
, previously 
<taxonomicName id="4C554D70FFAC61441E55F9182CB4F904" authorityName="Rouse, Goffredi &amp; Vrijenhoek" authorityYear="2004" box="[627,703,1723,1745]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="21" pageNumber="472" phylum="Annelida" rank="genus">
<emphasis id="B921EAE1FFAC61441E55F9182CB4F904" box="[627,703,1723,1745]" italics="true" pageId="21" pageNumber="472">Osedax</emphasis>
</taxonomicName>
‘spiral’, sp.1 SBJ-2006. 
<emphasis id="B921EAE1FFAC61441FE2F9182DDDF905" bold="true" box="[964,982,1723,1744]" pageId="21" pageNumber="472">A</emphasis>
. Anterior end of whale fall ‘Ruby’ at 2898 meters in September 2004. Baleen is prominent on surface of sediment in foreground with tubes (white arrows) of large chaetopterid annelid 
<taxonomicName id="4C554D70FFAC61441D4CF95B2C67F8DB" authorityName="Nishi &amp; Rouse" authorityYear="2014" box="[362,620,1784,1806]" class="Polychaeta" family="Chaetopteridae" genus="Phyllochaetopterus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Spionida" pageId="21" pageNumber="472" phylum="Annelida" rank="species" species="gigas">
<emphasis id="B921EAE1FFAC61441D4CF95B2C67F8DB" box="[362,620,1784,1806]" italics="true" pageId="21" pageNumber="472">Phyllochaetopterus gigas</emphasis>
</taxonomicName>
(see Nishi &amp; Rouse 2014). Little bone obvious on sediment surface. Background has a cluster of more than 10 
<taxonomicName id="4C554D70FFAC61441DE6F8B42C47F8F8" authority="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek, 2018" authorityName="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek" authorityYear="2018" box="[448,588,1815,1837]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="21" pageNumber="472" phylum="Annelida" rank="species" species="jabba" status="sp. nov.">
<emphasis id="B921EAE1FFAC61441DE6F8B42C47F8F8" box="[448,588,1815,1837]" italics="true" pageId="21" pageNumber="472">Osedax jabba</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A212579AFFAC61441E77F8B42C81F8F9" box="[593,650,1815,1836]" pageId="21" pageNumber="472" rank="species">
<emphasis id="B921EAE1FFAC61441E77F8B42C81F8F9" bold="true" box="[593,650,1815,1836]" pageId="21" pageNumber="472">n. sp.</emphasis>
</taxonomicNameLabel>
(black arrow) with their tubes coming directly out of the sediment. 
<emphasis id="B921EAE1FFAC61441913F8B42B4DF8F9" bold="true" box="[1333,1350,1815,1836]" pageId="21" pageNumber="472">B</emphasis>
. Cluster of more the 10 (black arrows) 
<taxonomicName id="4C554D70FFAC61441DF9F8962C65F89E" authority="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek, 2018" authorityName="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek" authorityYear="2018" box="[479,622,1845,1867]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="21" pageNumber="472" phylum="Annelida" rank="species" species="jabba" status="sp. nov.">
<emphasis id="B921EAE1FFAC61441DF9F8962C65F89E" box="[479,622,1845,1867]" italics="true" pageId="21" pageNumber="472">Osedax jabba</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A212579AFFAC61441E5EF8952CBFF89E" box="[632,692,1846,1867]" pageId="21" pageNumber="472" rank="species">
<emphasis id="B921EAE1FFAC61441E5EF8952CBFF89E" bold="true" box="[632,692,1846,1867]" pageId="21" pageNumber="472">n. sp.</emphasis>
</taxonomicNameLabel>
at 2898 meters in November 2004. No obvious bone on the sediment surface. 
<emphasis id="B921EAE1FFAC61441CC8F8F72F0BF8BF" bold="true" box="[238,256,1876,1898]" pageId="21" pageNumber="472">C</emphasis>
. Two specimens of 
<taxonomicName id="4C554D70FFAC61441DF5F8F72C6AF8BF" authority="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek, 2018" authorityName="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek" authorityYear="2018" box="[467,609,1876,1898]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="21" pageNumber="472" phylum="Annelida" rank="species" species="jabba" status="sp. nov.">
<emphasis id="B921EAE1FFAC61441DF5F8F72C6AF8BF" box="[467,609,1876,1898]" italics="true" pageId="21" pageNumber="472">Osedax jabba</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A212579AFFAC61441E4FF8F62CAFF8BF" box="[617,676,1877,1898]" pageId="21" pageNumber="472" rank="species">
<emphasis id="B921EAE1FFAC61441E4FF8F62CAFF8BF" bold="true" box="[617,676,1877,1898]" pageId="21" pageNumber="472">n. sp.</emphasis>
</taxonomicNameLabel>
at 2898 meters in November 2005. Two prominent red blood vessels are visible through the tube of each specimen and these indicate the trunk is occupying whole of tube and is coiled anteriorly. Trunk does not appear to emerge from tube. 
<emphasis id="B921EAE1FFAC61441E04F8312C3FF872" bold="true" box="[546,564,1938,1959]" pageId="21" pageNumber="472">D</emphasis>
. Lateral view of an 
<taxonomicName id="4C554D70FFAC61441F2FF8312D9DF87D" authority="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek, 2018" authorityName="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek" authorityYear="2018" box="[777,918,1938,1960]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="21" pageNumber="472" phylum="Annelida" rank="species" species="jabba" status="sp. nov.">
<emphasis id="B921EAE1FFAC61441F2FF8312D9DF87D" box="[777,918,1938,1960]" italics="true" pageId="21" pageNumber="472">Osedax jabba</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A212579AFFAC61441FB8F8312DD2F872" box="[926,985,1938,1959]" pageId="21" pageNumber="472" rank="species">
<emphasis id="B921EAE1FFAC61441FB8F8312DD2F872" bold="true" box="[926,985,1938,1959]" pageId="21" pageNumber="472">n. sp.</emphasis>
</taxonomicNameLabel>
specimen emerging from sediment surface, though adjacent to a piece of bone, at 2898 meters in January 2006. Blood vessels are visible, indicating trunk is filling tube.
</paragraph>
</caption>
<caption id="DF2A667BFFAF61471CB1F9112A08F809" httpUri="https://zenodo.org/record/1165894/files/figure.png" pageId="22" pageNumber="473" targetBox="[204,1246,193,1688]" targetPageId="22">
<paragraph id="8BEA36F3FFAF61471CB1F9112A08F809" blockId="22.[151,1436,1714,2012]" pageId="22" pageNumber="473">
<emphasis id="B921EAE1FFAF61471CB1F9112FCAF91D" bold="true" box="[151,449,1714,1736]" pageId="22" pageNumber="473">
FIGURE 10. 
<taxonomicName id="4C554D70FFAF61471D09F9112FCAF91D" authority="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek, 2018" authorityName="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek" authorityYear="2018" box="[303,449,1714,1736]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="22" pageNumber="473" phylum="Annelida" rank="species" species="jabba" status="sp. nov.">
<emphasis id="B921EAE1FFAF61471D09F9112FCAF91D" bold="true" box="[303,449,1714,1736]" italics="true" pageId="22" pageNumber="473">Osedax jabba</emphasis>
</taxonomicName>
</emphasis>
<taxonomicNameLabel id="A212579AFFAF61471DEAF9112C02F91D" box="[460,521,1714,1736]" pageId="22" pageNumber="473" rank="species">
<emphasis id="B921EAE1FFAF61471DEAF9112C08F912" bold="true" box="[460,515,1714,1735]" pageId="22" pageNumber="473">n. sp</emphasis>
.
</taxonomicNameLabel>
, previously 
<taxonomicName id="4C554D70FFAF61471EB6F9112CD7F91D" authorityName="Rouse, Goffredi &amp; Vrijenhoek" authorityYear="2004" box="[656,732,1714,1736]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="22" pageNumber="473" phylum="Annelida" rank="genus">
<emphasis id="B921EAE1FFAF61471EB6F9112CD7F91D" box="[656,732,1714,1736]" italics="true" pageId="22" pageNumber="473">Osedax</emphasis>
</taxonomicName>
‘spiral’, sp.1 SBJ-2006. 
<emphasis id="B921EAE1FFAF61471FCDF9112DF6F912" bold="true" box="[1003,1021,1714,1735]" pageId="22" pageNumber="473">A</emphasis>
. Preserved paratype (SIO-BIC A1639) female, highly contracted and still in tube collected at 2898 meters, Nov. 2004. Note absence of palps. 
<emphasis id="B921EAE1FFAF6147188EF9722AB2F933" bold="true" box="[1192,1209,1745,1766]" pageId="22" pageNumber="473">B</emphasis>
. Lateral view of trunk of preserved paratype (SIO-BIC A1639), showing oviduct running dorsally along trunk and terminating at anterior end of trunk. 
<emphasis id="B921EAE1FFAF61471CFDF8AD2EE6F8F1" bold="true" box="[219,237,1806,1828]" pageId="22" pageNumber="473">C</emphasis>
. Dorsal view of posterior region of trunk of preserved paratype (SIO-BIC A1639) showing oviduct emerging from lower trunk region. 
<emphasis id="B921EAE1FFAF61471D78F88E2F7BF897" bold="true" box="[350,368,1837,1858]" pageId="22" pageNumber="473">D</emphasis>
. Lower trunk and ovisac of preserved paratype (SIO-BIC A1639). 
<emphasis id="B921EAE1FFAF61471832F88E2A2EF897" bold="true" box="[1044,1061,1837,1858]" pageId="22" pageNumber="473">E</emphasis>
. Photomontage lateral view of living paratype (SIO-BIC A7836) collected at 2898 meters, November 2009. Tube has been partly peeled away to reveal inflated trunk. Distal (anterior) part of tube is intact and contains anterior part of the trunk that is not inflated (arrow). Oviduct is visible dorsally (left) and does not contain any oocytes. Cluster of more than 20 dwarf males is present at the base of the trunk. 
<emphasis id="B921EAE1FFAF6147196FF82A2B57F84B" bold="true" box="[1353,1372,1929,1950]" pageId="22" pageNumber="473">F.</emphasis>
Close up of base of trunk of living paratype (SIO-BIC A7836) in 10E, showing scattered dwarf males lying on its surface. Oviduct is the white line in left of the image. Blood vessel inside transparent trunk is also visible.
</paragraph>
</caption>
<caption id="DF2A667BFFAE61461CB1F9302B3FF80E" httpUri="https://zenodo.org/record/1165896/files/figure.png" pageId="23" pageNumber="474" targetBox="[208,1325,193,1630]" targetPageId="23">
<paragraph id="8BEA36F3FFAE61461CB1F9302B3FF80E" blockId="23.[151,1437,1683,2011]" pageId="23" pageNumber="474">
<emphasis id="B921EAE1FFAE61461CB1F9302FB3F97C" bold="true" box="[151,440,1683,1705]" pageId="23" pageNumber="474">
FIGURE 11. 
<taxonomicName id="4C554D70FFAE61461D0EF9302FB3F97C" authority="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek, 2018" authorityName="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek" authorityYear="2018" box="[296,440,1683,1705]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="23" pageNumber="474" phylum="Annelida" rank="species" species="jabba" status="sp. nov.">
<emphasis id="B921EAE1FFAE61461D0EF9302FB3F97C" bold="true" box="[296,440,1683,1705]" italics="true" pageId="23" pageNumber="474">Osedax jabba</emphasis>
</taxonomicName>
</emphasis>
<taxonomicNameLabel id="A212579AFFAE61461DE6F9302FF0F97C" box="[448,507,1683,1705]" pageId="23" pageNumber="474" rank="species">
<emphasis id="B921EAE1FFAE61461DE6F9302FFEF97D" bold="true" box="[448,501,1683,1704]" pageId="23" pageNumber="474">n. sp</emphasis>
.
</taxonomicNameLabel>
, previously 
<taxonomicName id="4C554D70FFAE61461E5BF9302CC2F97C" authorityName="Rouse, Goffredi &amp; Vrijenhoek" authorityYear="2004" box="[637,713,1683,1705]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="23" pageNumber="474" phylum="Annelida" rank="genus">
<emphasis id="B921EAE1FFAE61461E5BF9302CC2F97C" box="[637,713,1683,1705]" italics="true" pageId="23" pageNumber="474">Osedax</emphasis>
</taxonomicName>
‘spiral’; sp.1 SBJ-2006. 
<emphasis id="B921EAE1FFAE61461FE8F9302DECF97D" bold="true" box="[974,999,1683,1704]" pageId="23" pageNumber="474">A.</emphasis>
Image of live paratype (SIO-BIC A7837) female, still in tube, collected at 2898 meters in November 2009. Much of trunk is still relatively expanded, but anterior end is contracted (arrow points to tip of trunk) and trunk has pulled back along the tube. Mass of fine roots is attached to several small pieces of bone. 
<emphasis id="B921EAE1FFAE61461D1DF94C2F47F8D1" bold="true" box="[315,332,1775,1796]" pageId="23" pageNumber="474">B</emphasis>
. Ventral view of same specimen (SIO-BIC A7837) with sediment-covered part of the tube peeled away to show the transparent trunk (arrow points to tip of trunk). Large ganglion is visible in ventrolateral region of the trunk. 
<emphasis id="B921EAE1FFAE61461965F8AE2B5EF8F6" bold="true" box="[1347,1365,1805,1827]" pageId="23" pageNumber="474">C</emphasis>
. Close up of dorsal mid-trunk of paratype (SIO-BIC A7837) female, showing oviduct filled with oocytes and an adjacent blood vessel. 
<emphasis id="B921EAE1FFAE61461CB1F8E82EA2F8B5" bold="true" box="[151,169,1867,1888]" pageId="23" pageNumber="474">D</emphasis>
. Another close-up of oviduct, more posteriorly near base of trunk, showing some dwarf males in vicinity of oviduct. Oocytes ellipsoidal, 150 µm by 120 µm. 
<emphasis id="B921EAE1FFAE61461DD1F8C92C05F8AA" bold="true" box="[503,526,1898,1919]" pageId="23" pageNumber="474">E.</emphasis>
Living holotype (SIO-BIC A7832) collected October 2007 at 2898 meters with tube dissected open to show main trunk, which has largely ‘deflated’. Oviduct can be seen running along the trunk. Tube also contains lower trunk and ovisac region. Arrow points to position of where 10 dwarf males were found in lumen of tube against body of the female. 
<emphasis id="B921EAE1FFAE61461D44F8652F78F80E" bold="true" box="[354,371,1990,2011]" pageId="23" pageNumber="474">F.</emphasis>
Close-up of large ganglion in trunk of paratype (SIO-BIC A7837) female, seen in Figure 11B.
</paragraph>
</caption>
<caption id="DF2A667BFFA161491CB1F9252B1BF838" httpUri="https://zenodo.org/record/1165898/files/figure.png" pageId="24" pageNumber="475" targetBox="[268,1288,193,1629]" targetPageId="24">
<paragraph id="8BEA36F3FFA161491CB1F9252B1BF838" blockId="24.[151,1436,1669,2029]" pageId="24" pageNumber="475">
<emphasis id="B921EAE1FFA161491CB1F9252FB2F94E" bold="true" box="[151,441,1669,1692]" pageId="24" pageNumber="475">
FIGURE 12. 
<taxonomicName id="4C554D70FFA161491D0CF9262FB2F94E" authority="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek, 2018" authorityName="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek" authorityYear="2018" box="[298,441,1669,1691]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="24" pageNumber="475" phylum="Annelida" rank="species" species="jabba" status="sp. nov.">
<emphasis id="B921EAE1FFA161491D0CF9262FB2F94E" bold="true" box="[298,441,1669,1691]" italics="true" pageId="24" pageNumber="475">Osedax jabba</emphasis>
</taxonomicName>
</emphasis>
<taxonomicNameLabel id="A212579AFFA161491DE7F9252FF7F949" box="[449,508,1670,1692]" pageId="24" pageNumber="475" rank="species">
<emphasis id="B921EAE1FFA161491DE7F9252FFDF94E" bold="true" box="[449,502,1670,1691]" pageId="24" pageNumber="475">n. sp</emphasis>
.
</taxonomicNameLabel>
, previously 
<taxonomicName id="4C554D70FFA161491E58F9252CC1F949" authorityName="Rouse, Goffredi &amp; Vrijenhoek" authorityYear="2004" box="[638,714,1670,1692]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="24" pageNumber="475" phylum="Annelida" rank="genus">
<emphasis id="B921EAE1FFA161491E58F9252CC1F949" box="[638,714,1670,1692]" italics="true" pageId="24" pageNumber="475">Osedax</emphasis>
</taxonomicName>
‘spiral’; sp.1 SBJ-2006. 
<emphasis id="B921EAE1FFA161491FF6F9252DE9F94E" bold="true" box="[976,994,1670,1691]" pageId="24" pageNumber="475">A</emphasis>
. Lower trunk and roots and attached bone fragments of live paratype (SIO-BIC A7837) female. Two obvious roots forms; those emerging from ovisac are thick and covered in grey sediment and not directly in contact with bone. These branch into thinner roots that are covered in yellowish sediment. These thinner roots branch as well and cover the pieces of bone. 
<emphasis id="B921EAE1FFA161491FE5F9412DDFF922" bold="true" box="[963,980,1762,1783]" pageId="24" pageNumber="475">B</emphasis>
. Lower trunk and roots and attached bone fragments of preserved paratype (SIO-BIC A7838) collected June 2006 at 2898 meters. Large main roots can be seen emerging from posterior end of ovisac. 
<emphasis id="B921EAE1FFA161491DECF8BC2FFCF8E0" bold="true" box="[458,503,1823,1845]" pageId="24" pageNumber="475">C–F</emphasis>
. Various view of finer roots of paratype (SIO-BIC A7838), showing how they branch and also are in contact with fragments of bone of various sizes. Root surfaces not in contact with the bone are covered in sediment. 
<emphasis id="B921EAE1FFA161491CB1F8FE2EA3F8A6" bold="true" box="[151,168,1885,1907]" pageId="24" pageNumber="475">G</emphasis>
. Transverse section (7 µm) of paratype (SIO-BIC A7835), near base of trunk where oviduct has emerged to the outer dorsal surface. As with other 
<emphasis id="B921EAE1FFA161491D59F8D82FD9F844" box="[383,466,1915,1937]" italics="true" pageId="24" pageNumber="475">
<taxonomicName id="4C554D70FFA161491D59F8D82FC5F844" authorityName="Rouse, Goffredi &amp; Vrijenhoek" authorityYear="2004" box="[383,462,1915,1937]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="24" pageNumber="475" phylum="Annelida" rank="genus">Osedax</taxonomicName>
,
</emphasis>
there is an outer epidermis, circular and longitudinal muscles and glands, as well as two major blood vessels. However, the majority of the trunk interior has no obvious tissue, except for some minor blood vessels and a few oocytes. This interior space is interpreted here as the coelom. 
<emphasis id="B921EAE1FFA161491F00F81A2D31F81B" bold="true" box="[806,826,1977,1998]" pageId="24" pageNumber="475">H</emphasis>
. Another transverse section (7 µm) of paratype (SIO-BIC A7835) towards the distal (anterior) end of the trunk. The same basic structure as seen in G is also apparent here.
</paragraph>
</caption>
<caption id="DF2A667BFFA061481CB1FB782DA5FA5F" httpUri="https://zenodo.org/record/1165900/files/figure.png" pageId="25" pageNumber="476" targetBox="[151,1436,193,1221]" targetPageId="25">
<paragraph id="8BEA36F3FFA061481CB1FB782DA5FA5F" blockId="25.[151,1436,1243,1418]" pageId="25" pageNumber="476">
<emphasis id="B921EAE1FFA061481CB1FB782FB6FB24" bold="true" box="[151,445,1243,1265]" pageId="25" pageNumber="476">
FIGURE 13. 
<taxonomicName id="4C554D70FFA061481D0AFB782FB6FB24" authority="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek, 2018" authorityName="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek" authorityYear="2018" box="[300,445,1243,1265]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="25" pageNumber="476" phylum="Annelida" rank="species" species="jabba" status="sp. nov.">
<emphasis id="B921EAE1FFA061481D0AFB782FB6FB24" bold="true" box="[300,445,1243,1265]" italics="true" pageId="25" pageNumber="476">Osedax jabba</emphasis>
</taxonomicName>
</emphasis>
<taxonomicNameLabel id="A212579AFFA061481DE0FB782C08FB24" box="[454,515,1243,1265]" pageId="25" pageNumber="476" rank="species">
<emphasis id="B921EAE1FFA061481DE0FB782FF7FB25" bold="true" box="[454,508,1243,1264]" pageId="25" pageNumber="476">n. sp</emphasis>
.
</taxonomicNameLabel>
, previously 
<taxonomicName id="4C554D70FFA061481EAEFB782CDFFB24" authorityName="Rouse, Goffredi &amp; Vrijenhoek" authorityYear="2004" box="[648,724,1243,1265]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="25" pageNumber="476" phylum="Annelida" rank="genus">
<emphasis id="B921EAE1FFA061481EAEFB782CDFFB24" box="[648,724,1243,1265]" italics="true" pageId="25" pageNumber="476">Osedax</emphasis>
</taxonomicName>
‘spiral’; sp.1 SBJ-2006. 
<emphasis id="B921EAE1FFA061481FF8FB782DFBFB25" bold="true" box="[990,1008,1243,1264]" pageId="25" pageNumber="476">A</emphasis>
. Cluster of males lying between in tube lumen, in contact with the trunk of a female paratype 4 (SIO-BIC A7836). 
<emphasis id="B921EAE1FFA061481FAEFB592D92FADA" bold="true" box="[904,921,1274,1295]" pageId="25" pageNumber="476">B</emphasis>
. Photomicrograph montage of male allotype (SIO- BIC A7839), from tube of paratype 6 (SIO-BIC A7838). Prototroch is visible anteriorly, as is a mass of mature sperm. Some hooks are visible in expanded posterior region. 
<emphasis id="B921EAE1FFA061481E5BFA942C84FA98" bold="true" box="[637,655,1335,1357]" pageId="25" pageNumber="476">C</emphasis>
. Closeup of head showing prototroch and mass of mature sperm. 
<emphasis id="B921EAE1FFA061481915FA942B4EFA99" bold="true" box="[1331,1349,1335,1356]" pageId="25" pageNumber="476">D</emphasis>
. Mature sperm squeezed out the head of male. 
<emphasis id="B921EAE1FFA061481E3AFAF52C26FABE" bold="true" box="[540,557,1366,1387]" pageId="25" pageNumber="476">E</emphasis>
. Mature sperm. 
<emphasis id="B921EAE1FFA061481EF3FAF52CE9FABE" bold="true" box="[725,738,1366,1387]" pageId="25" pageNumber="476">F</emphasis>
. Close up of posterior segmented region showing hooked chaetae in pairs on one side of segments 2 and 3. Other chaetae are not in plane of focus.
</paragraph>
</caption>
<subSubSection id="C34F6578FFA061481CE1FA122B35FA3B" pageId="25" pageNumber="476" type="etymology">
<paragraph id="8BEA36F3FFA061481CE1FA122B35FA3B" blockId="25.[151,1436,1457,1914]" pageId="25" pageNumber="476">
<emphasis id="B921EAE1FFA061481CE1FA122F45FA1F" bold="true" box="[199,334,1457,1482]" pageId="25" pageNumber="476">Etymology.</emphasis>
The trunk of the new species is reminiscent of the tail of the mythical creature 
<emphasis id="B921EAE1FFA0614818D6FA122B97FA1F" box="[1264,1436,1457,1482]" italics="true" pageId="25" pageNumber="476">Jabba the Hutt</emphasis>
from the Star Wars franchise (
<bibRefCitation id="EFC44B02FFA061481DC0FA752C9EFA3B" author="Sansweet, S. J." box="[486,661,1494,1518]" journalOrPublisher="Ballantine, New York" pageId="25" pageNumber="476" pagination="134" refString="Sansweet, S. J. (1998) Hutt. In: Del Rey (Ed.), Star Wars Encyclopedia. Ballantine, New York, p. 134." title="Hutt" type="book chapter" volumeTitle="Del Rey (Ed.), Star Wars Encyclopedia" year="1998">Sansweet 1998</bibRefCitation>
). We name the new species (noun in apposition) in its honor.
</paragraph>
</subSubSection>
<subSubSection id="C34F6578FFA061481CE1FA5A2D61F8AF" pageId="25" pageNumber="476" type="discussion">
<paragraph id="8BEA36F3FFA061481CE1FA5A2D61F8AF" blockId="25.[151,1436,1457,1914]" pageId="25" pageNumber="476">
<emphasis id="B921EAE1FFA061481CE1FA5A2F30F9C7" bold="true" box="[199,315,1529,1554]" pageId="25" pageNumber="476">Remarks.</emphasis>
<taxonomicName id="4C554D70FFA061481D67FA5A2FD7F9C7" authority="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek, 2018" authorityName="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek" authorityYear="2018" box="[321,476,1529,1554]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="25" pageNumber="476" phylum="Annelida" rank="species" species="jabba" status="sp. nov.">
<emphasis id="B921EAE1FFA061481D67FA5A2FD7F9C7" box="[321,476,1529,1554]" italics="true" pageId="25" pageNumber="476">Osedax jabba</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A212579AFFA061481DC4FA5A2C2BF9C7" box="[482,544,1529,1554]" pageId="25" pageNumber="476" rank="species">
<emphasis id="B921EAE1FFA061481DC4FA5A2C2BF9C7" bold="true" box="[482,544,1529,1554]" pageId="25" pageNumber="476">n. sp.</emphasis>
</taxonomicNameLabel>
is the only member of 
<taxonomicName id="4C554D70FFA061481F06FA5A2D7FF9C7" authorityName="Rouse, Goffredi &amp; Vrijenhoek" authorityYear="2004" box="[800,884,1529,1554]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="25" pageNumber="476" phylum="Annelida" rank="genus">
<emphasis id="B921EAE1FFA061481F06FA5A2D7FF9C7" box="[800,884,1529,1554]" italics="true" pageId="25" pageNumber="476">Osedax</emphasis>
</taxonomicName>
Clade III and is the well-supported sistergroup to 
<taxonomicName id="4C554D70FFA061481CB1F9BE2EE0F9E3" authorityName="Rouse, Goffredi &amp; Vrijenhoek" authorityYear="2004" box="[151,235,1565,1590]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="25" pageNumber="476" phylum="Annelida" rank="genus">
<emphasis id="B921EAE1FFA061481CB1F9BE2EE0F9E3" box="[151,235,1565,1590]" italics="true" pageId="25" pageNumber="476">Osedax</emphasis>
</taxonomicName>
Clade IV, all of which have females that have four pinnulate palps. While the males of 
<taxonomicName id="4C554D70FFA06148189AF9BE2B5DF9E3" authority="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek, 2018" authorityName="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek" authorityYear="2018" box="[1212,1366,1565,1590]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="25" pageNumber="476" phylum="Annelida" rank="species" species="jabba" status="sp. nov.">
<emphasis id="B921EAE1FFA06148189AF9BE2B5DF9E3" box="[1212,1366,1565,1590]" italics="true" pageId="25" pageNumber="476">Osedax jabba</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A212579AFFA06148197BF9BE2B97F9E3" box="[1373,1436,1565,1590]" pageId="25" pageNumber="476" rank="species">
<emphasis id="B921EAE1FFA06148197BF9BE2B97F9E3" bold="true" box="[1373,1436,1565,1590]" pageId="25" pageNumber="476">n. sp.</emphasis>
</taxonomicNameLabel>
are similar (
<figureCitation id="136E2A76FFA061481D04F9E22F7DF98F" box="[290,374,1601,1626]" captionStart="FIGURE 13" captionStartId="25.[151,250,1243,1265]" captionTargetBox="[151,1436,193,1221]" captionTargetId="figure@25.[151,1436,193,1221]" captionTargetPageId="25" captionText="FIGURE 13. Osedax jabba n. sp., previously Osedax ‘spiral’; sp.1 SBJ-2006. A. Cluster of males lying between in tube lumen,in contact with the trunk of a female paratype 4 (SIO-BIC A7836).B. Photomicrographmontage ofmale allotype (SIO- BIC A7839), from tube of paratype 6 (SIO-BIC A7838). Prototroch is visible anteriorly, as is a mass of mature sperm. Some hooks are visible in expanded posterior region. C. Closeup of head showing prototroch and mass of mature sperm. D. Mature sperm squeezed out the head of male.E. Mature sperm.F. Close up of posterior segmented region showing hooked chaetae in pairs on one side of segments 2 and 3. Other chaetae are not in plane of focus." httpUri="https://zenodo.org/record/1165900/files/figure.png" pageId="25" pageNumber="476">Fig. 13</figureCitation>
) to the dwarfs found in other 
<taxonomicName id="4C554D70FFA061481EF1F9E22D20F98F" authorityName="Rouse, Goffredi &amp; Vrijenhoek" authorityYear="2004" box="[727,811,1601,1626]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="25" pageNumber="476" phylum="Annelida" rank="genus">
<emphasis id="B921EAE1FFA061481EF1F9E22D20F98F" box="[727,811,1601,1626]" italics="true" pageId="25" pageNumber="476">Osedax</emphasis>
</taxonomicName>
species (
<bibRefCitation id="EFC44B02FFA061481FB0F9E12AA6F98F" author="Worsaae, K. &amp; Rouse, G. W." box="[918,1197,1602,1626]" journalOrPublisher="Journal of Morphology" pageId="25" pageNumber="476" pagination="127 - 142" part="271" publicationUrl="https://doi.org/10.1002/jmor.10786" refString="Worsaae, K. &amp; Rouse, G. W. (2010) The simplicity of males: progenetic dwarf males of four species of Osedax (Annelida) investigated by confocal laser scanning microscopy. Journal of Morphology, 271, 127 - 142. https: // doi. org / 10.1002 / jmor. 10786" title="The simplicity of males: progenetic dwarf males of four species of Osedax (Annelida) investigated by confocal laser scanning microscopy" type="journal article" year="2010">Worsaae &amp; Rouse 2010</bibRefCitation>
), the anatomy of the females is unique among 
<taxonomicName id="4C554D70FFA061481DE7F9C62C1EF9AB" authorityName="Rouse, Goffredi &amp; Vrijenhoek" authorityYear="2004" box="[449,533,1637,1662]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="25" pageNumber="476" phylum="Annelida" rank="genus">
<emphasis id="B921EAE1FFA061481DE7F9C62C1EF9AB" box="[449,533,1637,1662]" italics="true" pageId="25" pageNumber="476">Osedax</emphasis>
</taxonomicName>
species and they show what appear to be striking adaptations to exploit bone fragments that have become buried in the sediment. Further study on the roots of 
<taxonomicName id="4C554D70FFA061481839F92A2AB1F977" authority="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek, 2018" authorityName="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek" authorityYear="2018" box="[1055,1210,1673,1698]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="25" pageNumber="476" phylum="Annelida" rank="species" species="jabba" status="sp. nov.">
<emphasis id="B921EAE1FFA061481839F92A2AB1F977" box="[1055,1210,1673,1698]" italics="true" pageId="25" pageNumber="476">Osedax jabba</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A212579AFFA0614818E6F92A2AF5F977" box="[1216,1278,1673,1698]" pageId="25" pageNumber="476" rank="species">
<emphasis id="B921EAE1FFA0614818E6F92A2AF5F977" bold="true" box="[1216,1278,1673,1698]" pageId="25" pageNumber="476">n. sp.</emphasis>
</taxonomicNameLabel>
are underway (Rouse &amp; Goffredi in prep.). The exploitation of buried bone fragments by 
<taxonomicName id="4C554D70FFA061481FD2F90E2A9BF913" authority="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek, 2018" authorityName="Rouse &amp; Goffredi &amp; Johnson &amp; Vrijenhoek" authorityYear="2018" box="[1012,1168,1709,1734]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="25" pageNumber="476" phylum="Annelida" rank="species" species="jabba" status="sp. nov.">
<emphasis id="B921EAE1FFA061481FD2F90E2A9BF913" box="[1012,1168,1709,1734]" italics="true" pageId="25" pageNumber="476">Osedax jabba</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A212579AFFA0614818BEF90E2AD2F913" box="[1176,1241,1709,1734]" pageId="25" pageNumber="476" rank="species">
<emphasis id="B921EAE1FFA0614818BEF90E2AD2F913" bold="true" box="[1176,1241,1709,1734]" pageId="25" pageNumber="476">n. sp.</emphasis>
</taxonomicNameLabel>
does not explain the absence of palps in this species. Based on the phylogeny of 
<taxonomicName id="4C554D70FFA061481F45F9722DBCF93F" authorityName="Rouse, Goffredi &amp; Vrijenhoek" authorityYear="2004" box="[867,951,1745,1770]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="25" pageNumber="476" phylum="Annelida" rank="genus">
<emphasis id="B921EAE1FFA061481F45F9722DBCF93F" box="[867,951,1745,1770]" italics="true" pageId="25" pageNumber="476">Osedax</emphasis>
</taxonomicName>
, (
<figureCitation id="136E2A76FFA061481FE8F9722A04F93F" box="[974,1039,1745,1770]" captionStart="FIGURE 1" captionStartId="4.[151,250,1820,1842]" captionTargetBox="[204,1329,193,1779]" captionTargetId="figure@4.[204,1330,193,1789]" captionTargetPageId="4" captionText="FIGURE 1. Osedax phylogenetic analyses. Osedax multi-gene phylogeny with Monilifera as outgroup.Maximum likelihood tree topology based on a partitioned dataset of five gene segments (MAFFT-aligned) for data shown in Table 2. The Bayesian analyses gave the same topology. Bootstrap support % (BS) is at each node, followed by posterior probability (PP) from the MrBayes analyses. * indicates values were ± 95% (BS) and 0.95 (PP). Missing values indicate BS &lt;50% and PP &lt;0.7. Six major Osedax clades are distinguished, following Vrijenhoek et al. (2009), Rouse et al. (2015) and Taboada et al. (2015). The various forms of palps (or absence thereof in the case of O. jabba n. sp.) are indicated for the major clades but these are not intended to indicate apomorphic states." httpUri="https://zenodo.org/record/1165876/files/figure.png" pageId="25" pageNumber="476">Fig. 1</figureCitation>
) this absence would appear to be a character loss. The presence of dwarf males towards the base of the tube is also unusual, as in other species the dwarfs tend to be found in the middle to anterior regions of the female tube (
<bibRefCitation id="EFC44B02FFA061481FDEF8B92AC9F8E7" author="Rouse, G. W. &amp; Goffredi, S. K. &amp; Vrijenhoek, R. C." box="[1016,1218,1817,1842]" journalOrPublisher="Science" pageId="25" pageNumber="476" pagination="668 - 671" part="305" publicationUrl="https://doi.org/10.1126/science.1098650" refString="Rouse, G. W., Goffredi, S. K. &amp; Vrijenhoek, R. C. (2004) Osedax: Bone-eating marine worms with dwarf males. Science, 305, 668 - 671. https: // doi. org / 10.1126 / science. 1098650" title="Osedax: Bone-eating marine worms with dwarf males" type="journal article" year="2004">
Rouse 
<emphasis id="B921EAE1FFA061481861F8B82A8BF8E7" box="[1095,1152,1817,1842]" italics="true" pageId="25" pageNumber="476">et al.</emphasis>
2004
</bibRefCitation>
; 
<bibRefCitation id="EFC44B02FFA0614818E9F8B92B9CF8E7" author="Jones, W. J. &amp; Johnson, S. B. &amp; Rouse, G. W. &amp; Vrijenhoek, R. C." box="[1231,1431,1817,1842]" journalOrPublisher="Proceedings of the Royal Society B" pageId="25" pageNumber="476" pagination="387 - 391" part="275" publicationUrl="https://doi.org/10.1098/rspb.2007.1437" refString="Jones, W. J., Johnson, S. B., Rouse, G. W. &amp; Vrijenhoek, R. C. (2008) Marine worms (genus Osedax) colonize cow bones. Proceedings of the Royal Society B, 275, 387 - 391. https: // doi. org / 10.1098 / rspb. 2007.1437" title="Marine worms (genus Osedax) colonize cow bones" type="journal article" year="2008">
Rouse 
<emphasis id="B921EAE1FFA06148193AF8B82B5EF8E7" box="[1308,1365,1817,1842]" italics="true" pageId="25" pageNumber="476">et al.</emphasis>
2008
</bibRefCitation>
; 
<bibRefCitation id="EFC44B02FFA061481CB1F89E2F98F883" author="Jones, W. J. &amp; Johnson, S. B. &amp; Rouse, G. W. &amp; Vrijenhoek, R. C." box="[151,403,1853,1878]" journalOrPublisher="Proceedings of the Royal Society B" pageId="25" pageNumber="476" pagination="387 - 391" part="275" publicationUrl="https://doi.org/10.1098/rspb.2007.1437" refString="Jones, W. J., Johnson, S. B., Rouse, G. W. &amp; Vrijenhoek, R. C. (2008) Marine worms (genus Osedax) colonize cow bones. Proceedings of the Royal Society B, 275, 387 - 391. https: // doi. org / 10.1098 / rspb. 2007.1437" title="Marine worms (genus Osedax) colonize cow bones" type="journal article" year="2008">
Vrijenhoek 
<emphasis id="B921EAE1FFA061481D3CF89C2F59F883" box="[282,338,1853,1878]" italics="true" pageId="25" pageNumber="476">et al.</emphasis>
2008
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) and it is not clear how larvae would be caught from the plankton and brought into the tube, as is surmised for other 
<taxonomicName id="4C554D70FFA061481D85F8C22FFCF8AF" authorityName="Rouse, Goffredi &amp; Vrijenhoek" authorityYear="2004" box="[419,503,1889,1914]" class="Polychaeta" family="Siboglinidae" genus="Osedax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Sabellida" pageId="25" pageNumber="476" phylum="Annelida" rank="genus">
<emphasis id="B921EAE1FFA061481D85F8C22FFCF8AF" box="[419,503,1889,1914]" italics="true" pageId="25" pageNumber="476">Osedax</emphasis>
</taxonomicName>
species (
<bibRefCitation id="EFC44B02FFA061481E7BF8C22D55F8AF" author="Jones, W. J. &amp; Johnson, S. B. &amp; Rouse, G. W. &amp; Vrijenhoek, R. C." box="[605,862,1889,1914]" journalOrPublisher="Proceedings of the Royal Society B" pageId="25" pageNumber="476" pagination="387 - 391" part="275" publicationUrl="https://doi.org/10.1098/rspb.2007.1437" refString="Jones, W. J., Johnson, S. B., Rouse, G. W. &amp; Vrijenhoek, R. C. (2008) Marine worms (genus Osedax) colonize cow bones. Proceedings of the Royal Society B, 275, 387 - 391. https: // doi. org / 10.1098 / rspb. 2007.1437" title="Marine worms (genus Osedax) colonize cow bones" type="journal article" year="2008">
Vrijenhoek 
<emphasis id="B921EAE1FFA061481EC5F8C02D10F8AF" box="[739,795,1889,1914]" italics="true" pageId="25" pageNumber="476">et al.</emphasis>
2008
</bibRefCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>