545 lines
74 KiB
XML
545 lines
74 KiB
XML
<document id="6C8EB4172C81FEB34A47DDCC0088B5C4" ID-DOI="10.11646/zootaxa.4033.1.3" ID-GBIF-Dataset="5ed7ad78-1c25-4690-98d7-df6929e4b01d" ID-ISSN="1175-5326" ID-Zenodo-Dep="289810" ID-ZooBank="9C0A63B6-5532-484D-BBD7-EDD5250D4ABA" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1461295996980" checkinUser="plazi" docAuthor="Blake, James A." docDate="2015" docId="038D87CDFFA1BC0EFF16FC23FBB6FD54" docLanguage="en" docName="zt04033p093.pdf" docOrigin="Zootaxa 4033 (1)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Oligobregma mucronata Blake, 2015, new species" docType="treatment" docVersion="5" lastPageNumber="84" masterDocId="FFB4FFB5FFB6BC15FF81FFC5FFCEFF98" masterDocTitle="New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma" masterLastPageNumber="93" masterPageNumber="57" pageNumber="80" updateTime="1698616504309" updateUser="plazi">
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<mods:mods id="DF5353FA24F326D23A9719C7EB635A15" xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo id="93336F17D7D2E7EB6768CC83D82FCE5A">
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<mods:title id="4FF2F04F5F9609F30E6BF36FF41F710B">New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma</mods:title>
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</mods:titleInfo>
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<mods:name id="5C3F43587D5D294F3A12CB644B16C251" type="personal">
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<mods:role id="B8803144F53897202246519C887D262B">
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<mods:roleTerm id="FFF1CE7DEC0BE592FE148FC99CA112F3">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="63333F0F2743B4E28219A446B0759A04">Blake, James A.</mods:namePart>
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</mods:name>
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<mods:typeOfResource id="AAB510761BCD7A0F36B1D5AB72D360A0">text</mods:typeOfResource>
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<mods:titleInfo id="9D3E610669F93B50B319521EB214F6C3">
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<mods:title id="6BECCA3022FD0A4F13BDFCE95E0B27B8">Zootaxa</mods:title>
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</mods:titleInfo>
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<mods:part id="CA1C07A2D228B4A7F3A18A7D0AC18715">
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<mods:date id="58FA66BF564D175FE19E5E017E0B737C">2015</mods:date>
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<mods:detail id="35B6D6BD70BA33C684AB012B55996D16" type="volume">
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<mods:number id="8783ED692182F941DEAAAFAB367ACF0E">4033</mods:number>
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</mods:detail>
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<mods:detail id="9DC96B74DBE2A9562443690C1BF312D6" type="issue">
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<mods:number id="EA2B33A73F787D1D4631108943F5458A">1</mods:number>
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<mods:start id="6089070D2CBF0C95A31A2E0091327252">57</mods:start>
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<mods:end id="41E294516E45880FD42BF5663FE2DC19">93</mods:end>
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</mods:extent>
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<mods:classification id="EB180C4E35F86E4D881C72A437A99A5E">journal article</mods:classification>
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<mods:identifier id="8789E695C4AC011D253631E356F32D29" type="DOI">10.11646/zootaxa.4033.1.3</mods:identifier>
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<mods:identifier id="102CAE2A224CF2F01437DEBF4998F649" type="GBIF-Dataset">5ed7ad78-1c25-4690-98d7-df6929e4b01d</mods:identifier>
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<mods:identifier id="F00808CB262CB4B6AC66B4F2EFC75B78" type="ISSN">1175-5326</mods:identifier>
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<mods:identifier id="96D0DD3DA6F737C2B8545C05625DE62E" type="Zenodo-Dep">289810</mods:identifier>
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<mods:identifier id="4A9348342641810EC8DAF5BEEE54E3B3" type="ZooBank">9C0A63B6-5532-484D-BBD7-EDD5250D4ABA</mods:identifier>
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<treatment id="038D87CDFFA1BC0EFF16FC23FBB6FD54" ID-DOI="http://doi.org/10.5281/zenodo.6102463" ID-GBIF-Taxon="127693786" ID-Zenodo-Dep="6102463" LSID="urn:lsid:plazi:treatment:038D87CDFFA1BC0EFF16FC23FBB6FD54" httpUri="http://treatment.plazi.org/id/038D87CDFFA1BC0EFF16FC23FBB6FD54" lastPageId="27" lastPageNumber="84" pageId="23" pageNumber="80">
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<subSubSection id="C33E6550FFA1BC02FF16FC23FED2FBBA" pageId="23" pageNumber="80" type="nomenclature">
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<paragraph id="8B9B36DBFFA1BC02FF16FC23FD99FB98" blockId="23.[151,599,998,1058]" box="[151,599,998,1024]" pageId="23" pageNumber="80">
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<heading id="D0D381B7FFA1BC02FF16FC23FD99FB98" bold="true" box="[151,599,998,1024]" fontSize="11" level="1" pageId="23" pageNumber="80" reason="1">
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<emphasis id="B950EAC9FFA1BC02FF16FC23FD99FB98" bold="true" box="[151,599,998,1024]" pageId="23" pageNumber="80">
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<taxonomicName id="4C244D58FFA1BC02FF16FC23FE0EFB98" ID-CoL="495TZ" box="[151,448,998,1024]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="23" pageNumber="80" phylum="Annelida" rank="species" species="mucronata" status="sp. nov.">
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<emphasis id="B950EAC9FFA1BC02FF16FC23FE0EFB98" bold="true" box="[151,448,998,1024]" italics="true" pageId="23" pageNumber="80">Oligobregma mucronata</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="A26357B2FFA1BC02FE46FC23FD99FB98" box="[455,599,998,1024]" pageId="23" pageNumber="80" rank="species">new species</taxonomicNameLabel>
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</emphasis>
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</heading>
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</paragraph>
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<paragraph id="8B9B36DBFFA1BC02FF16FBCCFED2FBBA" blockId="23.[151,599,998,1058]" box="[151,284,1033,1058]" pageId="23" pageNumber="80">
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<figureCitation id="131F2A5EFFA1BC02FF16FBCCFED2FBBA" box="[151,284,1033,1058]" captionStart-0="FIGURE 8" captionStart-1="FIGURE 9" captionStartId-0="24.[151,250,1500,1522]" captionStartId-1="26.[151,250,1613,1635]" captionTargetBox-0="[165,1426,220,1472]" captionTargetBox-1="[151,1431,194,1587]" captionTargetId-0="figure@24.[151,1436,193,1478]" captionTargetId-1="figure@26.[151,1436,193,1591]" captionTargetPageId-0="24" captionTargetPageId-1="26" captionText-0="FIGURE 8. Oligobregma mucronata n. sp. Paratypes, Sta. NBP- 21 (LACM-AHF-Poly 7014): A, anterior end, dorsal view; B, anterior end, ventral view; C, large notopodial spines from setiger 2; D, lyrate seta from posterior setiger; E, posterior parapodium, anterior view; F, pygidium, dorsal view. Abbreviations: dC, dorsal cirrus, intP; interramal papilla; lL, lower lip of mouth; neP, neuropodium; noP, notopodium; per, peristomium; pr, prostomium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove." captionText-1="FIGURE 9. Oligobregma mucronata n. sp. Photomicrographs: A, holotype, Sta. NBP- 21 (LACM-AHF Poly 7013), anterior half of body in ventral view; B, posterior parapodium, anterior view; C, same parapodium, detail of dorsal cirrus and internal glands; D, same parapodium, detail of ventral cirrus and internal glands; E ‒ I, developmental series of the prostomium (E, Sta. NBP- 18, 20 setigers, 2.4 mm long; F, Sta. NBP- 21, 22 setigers, 2.8 mm long; G, Sta. NBP- 04, 24 setigers, 3.0 mm long; H, Sta. NBP- 13, 28 setigers, 4.0 mm long; I, Sta. NBP- 21, 30 setigers, 9.5 mm long); J, sperm packets from specimen from Sta. NBP- 20; K, capillaries and lyrate setae from a posterior notopodium from Sta. NBP- 21. Abbreviations: dC, dorsal cirrus, vC, ventral cirrus." httpUri-0="https://zenodo.org/record/289818/files/figure.png" httpUri-1="https://zenodo.org/record/289819/files/figure.png" pageId="23" pageNumber="80">Figures 8‒9</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="C33E6550FFA1BC02FF16FB94FC4EFAFE" pageId="23" pageNumber="80" type="materials_examined">
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<paragraph id="8B9B36DBFFA1BC02FF16FB94FC4EFAFE" blockId="23.[151,1436,1105,1958]" pageId="23" pageNumber="80">
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||
<emphasis id="B950EAC9FFA1BC02FF16FB94FEB1FBF2" bold="true" box="[151,383,1105,1130]" pageId="23" pageNumber="80">Material examined</emphasis>
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.
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<emphasis id="B950EAC9FFA1BC02FE15FB94FD01FBF2" bold="true" box="[404,719,1105,1130]" pageId="23" pageNumber="80">
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East
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<collectingCountry id="F333764BFFA1BC02FE57FB94FD89FBF2" box="[470,583,1105,1130]" name="Antarctica" pageId="23" pageNumber="80">Antarctic</collectingCountry>
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Peninsula,
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</emphasis>
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<collectionCode id="ED35AE1EFFA1BC02FD5CFB97FCD2FBF1" box="[733,796,1106,1129]" pageId="23" pageNumber="80">RVIB</collectionCode>
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<emphasis id="B950EAC9FFA1BC02FCAAFB94FBD1FBF2" box="[811,1055,1105,1130]" italics="true" pageId="23" pageNumber="80">Nathaniel B. Palmer</emphasis>
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Cruise
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<date id="FF9A101BFFA1BC02FB03FB97FB2FFBF2" box="[1154,1249,1106,1130]" pageId="23" pageNumber="80" value="2000" valueMax="2003">2000-03</date>
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, Collector, J.A. Blake.—
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<emphasis id="B950EAC9FFA1BC02FF7AFBB0FCE2FB16" bold="true" box="[251,812,1141,1166]" pageId="23" pageNumber="80">Larsen-A Ice Shelf Area, Greenpeace Trough</emphasis>
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: Sta. NBP-06,
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<quantity id="4CDC9B3EFFA1BC02FC62FBB3FBFFFB15" box="[995,1073,1142,1166]" metricMagnitude="2" metricUnit="m" metricValue="7.33" pageId="23" pageNumber="80" unit="m" value="733.0">733 m</quantity>
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||
,
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<specimenCount id="9D22FD52FFA1BC02FBC0FBB3FB01FB16" box="[1089,1231,1141,1166]" pageId="23" pageNumber="80" type="generic">2 specimens</specimenCount>
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poorly preserved (JAB); Sta. NBP-07A,
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<quantity id="4CDC9B3EFFA1BC02FE28FB5FFE36FB29" box="[425,504,1178,1202]" metricMagnitude="2" metricUnit="m" metricValue="8.39" pageId="23" pageNumber="80" unit="m" value="839.0">839 m</quantity>
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, 3
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<emphasis id="B950EAC9FFA1BC02FDA2FB5CFD57FB2A" bold="true" box="[547,665,1177,1202]" pageId="23" pageNumber="80">
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||
<typeStatus id="549F8879FFA1BC02FDA2FB5CFD57FB2A" box="[547,665,1177,1202]" pageId="23" pageNumber="80" type="paratype">paratypes</typeStatus>
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||
</emphasis>
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(2 complete, LACM-AHF Poly 7011); Sta. NBP-07B,
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<quantity id="4CDC9B3EFFA1BC02FAAEFB5FFAB3FB29" box="[1327,1405,1178,1202]" metricMagnitude="2" metricUnit="m" metricValue="8.39" pageId="23" pageNumber="80" unit="m" value="839.0">839 m</quantity>
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,
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<specimenCount id="9D22FD52FFA1BC02FA0FFB5FFECFFB4E" pageId="23" pageNumber="80" type="generic">1 specimen</specimenCount>
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||
(JAB); Sta. NBP-
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||
<quantity id="4CDC9B3EFFA1BC02FE54FB78FD86FB4D" box="[469,584,1213,1238]" metricMagnitude="4" metricUnit="m" metricValue="1.6713" pageId="23" pageNumber="80" unit="m" value="16713.0">16, 713 m</quantity>
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||
,
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||
<specimenCount id="9D22FD52FFA1BC02FDD4FB78FD2FFB4E" box="[597,737,1213,1238]" pageId="23" pageNumber="80" type="generic">5 specimens</specimenCount>
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||
(
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||
<specimenCount id="9D22FD52FFA1BC02FD75FB7BFC8AFB4E" box="[756,836,1213,1238]" pageId="23" pageNumber="80" type="adult">1 adult</specimenCount>
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||
,
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||
<specimenCount id="9D22FD52FFA1BC02FCD0FB7BFC01FB4E" box="[849,975,1213,1238]" pageId="23" pageNumber="80" type="juvenile">4 juveniles</specimenCount>
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||
) (JAB); Sta. NBP-
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||
<quantity id="4CDC9B3EFFA1BC02FB2DFB7BFAD0FB4D" box="[1196,1310,1214,1238]" metricMagnitude="4" metricUnit="m" metricValue="1.7719" pageId="23" pageNumber="80" unit="m" value="17719.0">17, 719 m</quantity>
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||
,
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||
<specimenCount id="9D22FD52FFA1BC02FAAAFB7BFA52FB4E" box="[1323,1436,1213,1238]" pageId="23" pageNumber="80" type="juvenile">1 juvenile</specimenCount>
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||
(JAB); Sta. NBP-
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||
<quantity id="4CDC9B3EFFA1BC02FEE0FB27FE1EFB61" box="[353,464,1249,1274]" metricMagnitude="4" metricUnit="m" metricValue="1.8664999999999998" pageId="23" pageNumber="80" unit="m" value="18665.0">18, 665 m</quantity>
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||
, 3
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||
<emphasis id="B950EAC9FFA1BC02FE73FB24FDA1FB62" bold="true" box="[498,623,1249,1274]" pageId="23" pageNumber="80">
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||
<typeStatus id="549F8879FFA1BC02FE73FB24FDA4FB62" box="[498,618,1249,1274]" pageId="23" pageNumber="80" type="paratype">paratypes</typeStatus>
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||
,
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||
</emphasis>
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||
<specimenCount id="9D22FD52FFA1BC02FDF7FB27FD09FB62" box="[630,711,1249,1274]" pageId="23" pageNumber="80" type="adult">1 adult</specimenCount>
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||
,
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||
<specimenCount id="9D22FD52FFA1BC02FD53FB27FC83FB62" box="[722,845,1249,1274]" pageId="23" pageNumber="80" type="juvenile">2 juveniles</specimenCount>
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(AHF-Poly 7012); Sta. NBP-
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<quantity id="4CDC9B3EFFA1BC02FB21FB27FADEFB61" box="[1184,1296,1250,1274]" metricMagnitude="4" metricUnit="m" metricValue="1.9879" pageId="23" pageNumber="80" unit="m" value="19879.0">19, 879 m</quantity>
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||
,
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||
<specimenCount id="9D22FD52FFA1BC02FA9DFB27FA52FB62" box="[1308,1436,1249,1274]" pageId="23" pageNumber="80" type="generic">1 specimen</specimenCount>
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||
(JAB); Sta. NBP-
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||
<quantity id="4CDC9B3EFFA1BC02FEE4FAC3FE13FA85" box="[357,477,1286,1310]" metricMagnitude="4" metricUnit="m" metricValue="2.0899" pageId="23" pageNumber="80" unit="m" value="20899.0">20, 899 m</quantity>
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, 7
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<emphasis id="B950EAC9FFA1BC02FD84FAC0FDB5FA86" bold="true" box="[517,635,1285,1310]" pageId="23" pageNumber="80">
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||
<typeStatus id="549F8879FFA1BC02FD84FAC0FDB5FA86" box="[517,635,1285,1310]" pageId="23" pageNumber="80" type="paratype">paratypes</typeStatus>
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||
</emphasis>
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||
(
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<collectionCode id="ED35AE1EFFA1BC02FD0FFAC3FD2FFA86" LSID="urn:lsid:biocol.org:col:34871" box="[654,737,1286,1310]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="23" pageNumber="80">USNM</collectionCode>
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1281914); Sta. NBP-
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||
<quantity id="4CDC9B3EFFA1BC02FC63FAC3FB97FA85" box="[994,1113,1286,1310]" metricMagnitude="4" metricUnit="m" metricValue="2.1912" pageId="23" pageNumber="80" unit="m" value="21912.0">21, 912 m</quantity>
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||
,
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||
<emphasis id="B950EAC9FFA1BC02FBE9FAC0FB01FA86" bold="true" box="[1128,1231,1285,1310]" pageId="23" pageNumber="80">
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||
<typeStatus id="549F8879FFA1BC02FBE9FAC0FB01FA86" box="[1128,1231,1285,1310]" pageId="23" pageNumber="80" type="holotype">holotype</typeStatus>
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||
</emphasis>
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||
and 4
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||
<emphasis id="B950EAC9FFA1BC02FAA7FAC0FA52FA86" bold="true" box="[1318,1436,1285,1310]" pageId="23" pageNumber="80">
|
||
<typeStatus id="549F8879FFA1BC02FAA7FAC0FA52FA86" box="[1318,1436,1285,1310]" pageId="23" pageNumber="80" type="paratype">paratypes</typeStatus>
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||
</emphasis>
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||
(LACM-AHF Poly 7013, 7014); Sta. NBP-
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||
<quantity id="4CDC9B3EFFA1BC02FD03FAEFFD3BFAD9" box="[642,757,1321,1346]" metricMagnitude="4" metricUnit="m" metricValue="2.2868" pageId="23" pageNumber="80" unit="m" value="22868.0">22, 868 m</quantity>
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||
,
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||
<specimenCount id="9D22FD52FFA1BC02FC83FAEFFC42FADA" box="[770,908,1321,1346]" pageId="23" pageNumber="80" type="generic">4 specimens</specimenCount>
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||
(JAB).—
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||
<emphasis id="B950EAC9FFA1BC02FC7DFAECFE76FAFE" bold="true" pageId="23" pageNumber="80">LIS-A Area, transect along border with Larsen Ice Shelf B:</emphasis>
|
||
Sta. NBP-
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||
<quantity id="4CDC9B3EFFA1BC02FDB4FA8BFD6DFAFD" box="[565,675,1358,1382]" metricMagnitude="4" metricUnit="m" metricValue="1.3322999999999998" pageId="23" pageNumber="80" unit="m" value="13323.0">13, 323 m</quantity>
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||
,
|
||
<specimenCount id="9D22FD52FFA1BC02FD2EFA8BFCE0FAFE" box="[687,814,1357,1382]" pageId="23" pageNumber="80" type="generic">1 specimen</specimenCount>
|
||
(JAB).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C33E6550FFA1BC0CFF46FAB4FB8BFB5D" lastPageId="25" lastPageNumber="82" pageId="23" pageNumber="80" type="description">
|
||
<paragraph id="8B9B36DBFFA1BC02FF46FAB4FD23F956" blockId="23.[151,1436,1105,1958]" pageId="23" pageNumber="80">
|
||
<emphasis id="B950EAC9FFA1BC02FF46FAB4FE9FFA12" bold="true" box="[199,337,1393,1418]" pageId="23" pageNumber="80">Description</emphasis>
|
||
.
|
||
<typeStatus id="549F8879FFA1BC02FEE5FAB4FE02FA12" box="[356,460,1393,1418]" pageId="23" pageNumber="80" type="holotype">Holotype</typeStatus>
|
||
incomplete,
|
||
<quantity id="4CDC9B3EFFA1BC02FDE6FAB4FD75FA11" box="[615,699,1393,1418]" metricMagnitude="-2" metricUnit="m" metricValue="1.6" pageId="23" pageNumber="80" unit="mm" value="16.0">16 mm</quantity>
|
||
long,
|
||
<quantity id="4CDC9B3EFFA1BC02FC8AFAB4FCABFA11" box="[779,869,1393,1418]" metricMagnitude="-3" metricUnit="m" metricValue="3.5" pageId="23" pageNumber="80" unit="mm" value="3.5">3.5 mm</quantity>
|
||
wide for 30 setigerous segments; two complete
|
||
<typeStatus id="549F8879FFA1BC02FF16FA53FECCFA36" box="[151,258,1430,1454]" pageId="23" pageNumber="80" type="paratype">paratypes</typeStatus>
|
||
from Sta. NBP-21, one
|
||
<quantity id="4CDC9B3EFFA1BC02FD91FA53FD90FA35" box="[528,606,1430,1454]" metricMagnitude="-2" metricUnit="m" metricValue="1.1" pageId="23" pageNumber="80" unit="mm" value="11.0">11 mm</quantity>
|
||
long,
|
||
<quantity id="4CDC9B3EFFA1BC02FD25FA53FD34FA35" box="[676,762,1430,1454]" metricMagnitude="-3" metricUnit="m" metricValue="1.4" pageId="23" pageNumber="80" unit="mm" value="1.4">1.4 mm</quantity>
|
||
wide with 27 setigerous segments; second
|
||
<quantity id="4CDC9B3EFFA1BC02FB5CFA50FAFDFA35" box="[1245,1331,1429,1454]" metricMagnitude="-3" metricUnit="m" metricValue="9.5" pageId="23" pageNumber="80" unit="mm" value="9.5">9.5 mm</quantity>
|
||
long,
|
||
<quantity id="4CDC9B3EFFA1BC02FAF8FA50FF0DFA49" metricMagnitude="-3" metricUnit="m" metricValue="1.5" pageId="23" pageNumber="80" unit="mm" value="1.5">1.5 mm</quantity>
|
||
wide with 28 setigerous segments. Body expanded through first eight setigers, thereafter narrowing to posterior end. Color in alcohol light pink, without body pigment. Body segments with transverse rows of weakly raised pads; setigers 1‒3 uniannulate to biannulate (
|
||
<figureCitation id="131F2A5EFFA1BC02FD72F9C4FCF9F982" box="[755,823,1537,1562]" captionStart="FIGURE 8" captionStartId="24.[151,250,1500,1522]" captionTargetBox="[165,1426,220,1472]" captionTargetId="figure@24.[151,1436,193,1478]" captionTargetPageId="24" captionText="FIGURE 8. Oligobregma mucronata n. sp. Paratypes, Sta. NBP- 21 (LACM-AHF-Poly 7014): A, anterior end, dorsal view; B, anterior end, ventral view; C, large notopodial spines from setiger 2; D, lyrate seta from posterior setiger; E, posterior parapodium, anterior view; F, pygidium, dorsal view. Abbreviations: dC, dorsal cirrus, intP; interramal papilla; lL, lower lip of mouth; neP, neuropodium; noP, notopodium; per, peristomium; pr, prostomium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove." httpUri="https://zenodo.org/record/289818/files/figure.png" pageId="23" pageNumber="80">Fig. 8</figureCitation>
|
||
A‒B); setigers 4 and subsequent segments becoming quadriannulate with low inconspicuous pads throughout (
|
||
<figureCitation id="131F2A5EFFA1BC02FCACF9E0FCBAF9A6" box="[813,884,1573,1598]" captionStart="FIGURE 9" captionStartId="26.[151,250,1613,1635]" captionTargetBox="[151,1431,194,1587]" captionTargetId="figure@26.[151,1436,193,1591]" captionTargetPageId="26" captionText="FIGURE 9. Oligobregma mucronata n. sp. Photomicrographs: A, holotype, Sta. NBP- 21 (LACM-AHF Poly 7013), anterior half of body in ventral view; B, posterior parapodium, anterior view; C, same parapodium, detail of dorsal cirrus and internal glands; D, same parapodium, detail of ventral cirrus and internal glands; E ‒ I, developmental series of the prostomium (E, Sta. NBP- 18, 20 setigers, 2.4 mm long; F, Sta. NBP- 21, 22 setigers, 2.8 mm long; G, Sta. NBP- 04, 24 setigers, 3.0 mm long; H, Sta. NBP- 13, 28 setigers, 4.0 mm long; I, Sta. NBP- 21, 30 setigers, 9.5 mm long); J, sperm packets from specimen from Sta. NBP- 20; K, capillaries and lyrate setae from a posterior notopodium from Sta. NBP- 21. Abbreviations: dC, dorsal cirrus, vC, ventral cirrus." httpUri="https://zenodo.org/record/289819/files/figure.png" pageId="23" pageNumber="80">Fig. 9</figureCitation>
|
||
A). Venter with prominent ventral midline from setiger 2 composed of a row of large pads within a groove (
|
||
<figureCitation id="131F2A5EFFA1BC02FCCBF98CFC40F9FA" box="[842,910,1609,1634]" captionStart="FIGURE 8" captionStartId="24.[151,250,1500,1522]" captionTargetBox="[165,1426,220,1472]" captionTargetId="figure@24.[151,1436,193,1478]" captionTargetPageId="24" captionText="FIGURE 8. Oligobregma mucronata n. sp. Paratypes, Sta. NBP- 21 (LACM-AHF-Poly 7014): A, anterior end, dorsal view; B, anterior end, ventral view; C, large notopodial spines from setiger 2; D, lyrate seta from posterior setiger; E, posterior parapodium, anterior view; F, pygidium, dorsal view. Abbreviations: dC, dorsal cirrus, intP; interramal papilla; lL, lower lip of mouth; neP, neuropodium; noP, notopodium; per, peristomium; pr, prostomium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove." httpUri="https://zenodo.org/record/289818/files/figure.png" pageId="23" pageNumber="80">Fig. 8</figureCitation>
|
||
B); each segment with at least two pads, each subdivided at middle by transverse groove, forming four structures per segment, corresponding to quadriannulate rows of segmental pads (
|
||
<figureCitation id="131F2A5EFFA1BC02FE38F954FE31F932" box="[441,511,1681,1706]" captionStart="FIGURE 9" captionStartId="26.[151,250,1613,1635]" captionTargetBox="[151,1431,194,1587]" captionTargetId="figure@26.[151,1436,193,1591]" captionTargetPageId="26" captionText="FIGURE 9. Oligobregma mucronata n. sp. Photomicrographs: A, holotype, Sta. NBP- 21 (LACM-AHF Poly 7013), anterior half of body in ventral view; B, posterior parapodium, anterior view; C, same parapodium, detail of dorsal cirrus and internal glands; D, same parapodium, detail of ventral cirrus and internal glands; E ‒ I, developmental series of the prostomium (E, Sta. NBP- 18, 20 setigers, 2.4 mm long; F, Sta. NBP- 21, 22 setigers, 2.8 mm long; G, Sta. NBP- 04, 24 setigers, 3.0 mm long; H, Sta. NBP- 13, 28 setigers, 4.0 mm long; I, Sta. NBP- 21, 30 setigers, 9.5 mm long); J, sperm packets from specimen from Sta. NBP- 20; K, capillaries and lyrate setae from a posterior notopodium from Sta. NBP- 21. Abbreviations: dC, dorsal cirrus, vC, ventral cirrus." httpUri="https://zenodo.org/record/289819/files/figure.png" pageId="23" pageNumber="80">Fig. 9</figureCitation>
|
||
A). Branchiae absent. Pygidium of
|
||
<typeStatus id="549F8879FFA1BC02FC19F954FC34F932" box="[920,1018,1681,1706]" pageId="23" pageNumber="80" type="holotype">holotype</typeStatus>
|
||
with indistinct lobes, with two cirri present;
|
||
<typeStatus id="549F8879FFA1BC02FF77F973FEAFF956" box="[246,353,1718,1742]" pageId="23" pageNumber="80" type="paratype">paratypes</typeStatus>
|
||
with up to four anal cirri (
|
||
<figureCitation id="131F2A5EFFA1BC02FD0AF970FD03F956" box="[651,717,1717,1742]" captionStart="FIGURE 8" captionStartId="24.[151,250,1500,1522]" captionTargetBox="[165,1426,220,1472]" captionTargetId="figure@24.[151,1436,193,1478]" captionTargetPageId="24" captionText="FIGURE 8. Oligobregma mucronata n. sp. Paratypes, Sta. NBP- 21 (LACM-AHF-Poly 7014): A, anterior end, dorsal view; B, anterior end, ventral view; C, large notopodial spines from setiger 2; D, lyrate seta from posterior setiger; E, posterior parapodium, anterior view; F, pygidium, dorsal view. Abbreviations: dC, dorsal cirrus, intP; interramal papilla; lL, lower lip of mouth; neP, neuropodium; noP, notopodium; per, peristomium; pr, prostomium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove." httpUri="https://zenodo.org/record/289818/files/figure.png" pageId="23" pageNumber="80">Fig. 8</figureCitation>
|
||
F).
|
||
</paragraph>
|
||
<paragraph id="8B9B36DBFFA1BC02FF46F91CFDA5F83E" blockId="23.[151,1436,1105,1958]" pageId="23" pageNumber="80">
|
||
Prostomium broadly curved across anterior margin, weakly expanded laterally, narrowing posteriorly; with two short, rounded lobes emerging subapically from anterior margin and extending forward forming short frontal horns (
|
||
<figureCitation id="131F2A5EFFA1BC02FF67F8E4FEFBF8A2" box="[230,309,1825,1850]" captionStart="FIGURE 8" captionStartId="24.[151,250,1500,1522]" captionTargetBox="[165,1426,220,1472]" captionTargetId="figure@24.[151,1436,193,1478]" captionTargetPageId="24" captionText="FIGURE 8. Oligobregma mucronata n. sp. Paratypes, Sta. NBP- 21 (LACM-AHF-Poly 7014): A, anterior end, dorsal view; B, anterior end, ventral view; C, large notopodial spines from setiger 2; D, lyrate seta from posterior setiger; E, posterior parapodium, anterior view; F, pygidium, dorsal view. Abbreviations: dC, dorsal cirrus, intP; interramal papilla; lL, lower lip of mouth; neP, neuropodium; noP, notopodium; per, peristomium; pr, prostomium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove." httpUri="https://zenodo.org/record/289818/files/figure.png" pageId="23" pageNumber="80">Figs. 8</figureCitation>
|
||
A‒B, 9A); eyes absent; nuchal organs not observed; proboscis not everted. Peristomium a doublelobed ring around prostomium dorsally (
|
||
<figureCitation id="131F2A5EFFA1BC02FDDEF880FD6FF8C6" box="[607,673,1861,1886]" captionStart="FIGURE 8" captionStartId="24.[151,250,1500,1522]" captionTargetBox="[165,1426,220,1472]" captionTargetId="figure@24.[151,1436,193,1478]" captionTargetPageId="24" captionText="FIGURE 8. Oligobregma mucronata n. sp. Paratypes, Sta. NBP- 21 (LACM-AHF-Poly 7014): A, anterior end, dorsal view; B, anterior end, ventral view; C, large notopodial spines from setiger 2; D, lyrate seta from posterior setiger; E, posterior parapodium, anterior view; F, pygidium, dorsal view. Abbreviations: dC, dorsal cirrus, intP; interramal papilla; lL, lower lip of mouth; neP, neuropodium; noP, notopodium; per, peristomium; pr, prostomium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove." httpUri="https://zenodo.org/record/289818/files/figure.png" pageId="23" pageNumber="80">Fig. 8</figureCitation>
|
||
A), ventrally forming upper and lower lips of mouth; upper lip with 4‒5 narrow lobes; lower lip with about seven large, elongate inflated lobes, together forming a ring of elongate lobes around oral opening (
|
||
<figureCitation id="131F2A5EFFA1BC02FE4BF848FDD9F83E" box="[458,535,1933,1958]" captionStart="FIGURE 8" captionStartId="24.[151,250,1500,1522]" captionTargetBox="[165,1426,220,1472]" captionTargetId="figure@24.[151,1436,193,1478]" captionTargetPageId="24" captionText="FIGURE 8. Oligobregma mucronata n. sp. Paratypes, Sta. NBP- 21 (LACM-AHF-Poly 7014): A, anterior end, dorsal view; B, anterior end, ventral view; C, large notopodial spines from setiger 2; D, lyrate seta from posterior setiger; E, posterior parapodium, anterior view; F, pygidium, dorsal view. Abbreviations: dC, dorsal cirrus, intP; interramal papilla; lL, lower lip of mouth; neP, neuropodium; noP, notopodium; per, peristomium; pr, prostomium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove." httpUri="https://zenodo.org/record/289818/files/figure.png" pageId="23" pageNumber="80">Figs. 8</figureCitation>
|
||
B, 9A).
|
||
</paragraph>
|
||
<caption id="DF5B6653FFAEBC0DFF16FA19FEFFF9F4" httpUri="https://zenodo.org/record/289818/files/figure.png" pageId="24" pageNumber="81" targetBox="[165,1426,220,1472]" targetPageId="24">
|
||
<paragraph id="8B9B36DBFFAEBC0DFF16FA19FEFFF9F4" blockId="24.[151,1436,1500,1644]" pageId="24" pageNumber="81">
|
||
<emphasis id="B950EAC9FFAEBC0DFF16FA19FEDCFA6A" bold="true" box="[151,274,1500,1522]" pageId="24" pageNumber="81">FIGURE 8.</emphasis>
|
||
<taxonomicName id="4C244D58FFAEBC0DFE98FA19FDDCFA6A" box="[281,530,1500,1522]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="24" pageNumber="81" phylum="Annelida" rank="species" species="mucronata" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFAEBC0DFE98FA19FDDCFA6A" box="[281,530,1500,1522]" italics="true" pageId="24" pageNumber="81">Oligobregma mucronata</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B950EAC9FFAEBC0DFD99FA19FD9FFA6A" bold="true" box="[536,593,1500,1522]" pageId="24" pageNumber="81">
|
||
<taxonomicNameLabel id="A26357B2FFAEBC0DFD99FA19FD9FFA6A" box="[536,593,1500,1522]" pageId="24" pageNumber="81" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
Paratypes, Sta. NBP-21 (LACM-AHF-Poly 7014): A, anterior end, dorsal view; B, anterior end, ventral view; C, large notopodial spines from setiger 2; D, lyrate seta from posterior setiger; E, posterior parapodium, anterior view; F, pygidium, dorsal view. Abbreviations: dC, dorsal cirrus, intP; interramal
|
||
<taxonomicName id="4C244D58FFAEBC0DFB2EF9DCFB39F9B7" box="[1199,1271,1561,1583]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="24" pageNumber="81" phylum="Annelida" rank="species" species="papilla">papilla</taxonomicName>
|
||
; lL, lower lip of mouth; neP, neuropodium; noP, notopodium; per, peristomium; pr, prostomium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="8B9B36DBFFAEBC0DFF46F956FE2DF81C" blockId="24.[151,1436,1683,2032]" pageId="24" pageNumber="81">
|
||
Parapodia with short, conical-shaped podial lobes in anterior third of body, becoming longer posteriorly; dorsal and ventral cirri from setiger 14 on
|
||
<typeStatus id="549F8879FFAEBC0DFDB8F972FD50F948" box="[569,670,1719,1744]" pageId="24" pageNumber="81" type="holotype">holotype</typeStatus>
|
||
, these podial lobes inconspicuous anteriorly, becoming longer and more prominent posteriorly, both cirri asymmetrical; dorsal cirri triangular, broad, basally tapering to narrow nipple-like tip (
|
||
<figureCitation id="131F2A5EFFAEBC0DFECDF93AFE52F880" box="[332,412,1791,1816]" captionStart="FIGURE 8" captionStartId="24.[151,250,1500,1522]" captionTargetBox="[165,1426,220,1472]" captionTargetId="figure@24.[151,1436,193,1478]" captionTargetPageId="24" captionText="FIGURE 8. Oligobregma mucronata n. sp. Paratypes, Sta. NBP- 21 (LACM-AHF-Poly 7014): A, anterior end, dorsal view; B, anterior end, ventral view; C, large notopodial spines from setiger 2; D, lyrate seta from posterior setiger; E, posterior parapodium, anterior view; F, pygidium, dorsal view. Abbreviations: dC, dorsal cirrus, intP; interramal papilla; lL, lower lip of mouth; neP, neuropodium; noP, notopodium; per, peristomium; pr, prostomium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove." httpUri="https://zenodo.org/record/289818/files/figure.png" pageId="24" pageNumber="81">Figs. 8</figureCitation>
|
||
E, 9B‒C); ventral cirri strongly asymmetrical with broad basal attachment narrowing to elongated, nipple-like tip (
|
||
<figureCitation id="131F2A5EFFAEBC0DFE44F8E6FDDDF8A4" box="[453,531,1827,1852]" captionStart="FIGURE 8" captionStartId="24.[151,250,1500,1522]" captionTargetBox="[165,1426,220,1472]" captionTargetId="figure@24.[151,1436,193,1478]" captionTargetPageId="24" captionText="FIGURE 8. Oligobregma mucronata n. sp. Paratypes, Sta. NBP- 21 (LACM-AHF-Poly 7014): A, anterior end, dorsal view; B, anterior end, ventral view; C, large notopodial spines from setiger 2; D, lyrate seta from posterior setiger; E, posterior parapodium, anterior view; F, pygidium, dorsal view. Abbreviations: dC, dorsal cirrus, intP; interramal papilla; lL, lower lip of mouth; neP, neuropodium; noP, notopodium; per, peristomium; pr, prostomium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove." httpUri="https://zenodo.org/record/289818/files/figure.png" pageId="24" pageNumber="81">Figs. 8</figureCitation>
|
||
E, 9B‒D); both dorsal and ventral cirri with darkly pigmented internal tubularshaped glands extending toward nipple-like tips (
|
||
<figureCitation id="131F2A5EFFAEBC0DFD68F882FCFDF8F8" box="[745,819,1863,1888]" captionStart="FIGURE 9" captionStartId="26.[151,250,1613,1635]" captionTargetBox="[151,1431,194,1587]" captionTargetId="figure@26.[151,1436,193,1591]" captionTargetPageId="26" captionText="FIGURE 9. Oligobregma mucronata n. sp. Photomicrographs: A, holotype, Sta. NBP- 21 (LACM-AHF Poly 7013), anterior half of body in ventral view; B, posterior parapodium, anterior view; C, same parapodium, detail of dorsal cirrus and internal glands; D, same parapodium, detail of ventral cirrus and internal glands; E ‒ I, developmental series of the prostomium (E, Sta. NBP- 18, 20 setigers, 2.4 mm long; F, Sta. NBP- 21, 22 setigers, 2.8 mm long; G, Sta. NBP- 04, 24 setigers, 3.0 mm long; H, Sta. NBP- 13, 28 setigers, 4.0 mm long; I, Sta. NBP- 21, 30 setigers, 9.5 mm long); J, sperm packets from specimen from Sta. NBP- 20; K, capillaries and lyrate setae from a posterior notopodium from Sta. NBP- 21. Abbreviations: dC, dorsal cirrus, vC, ventral cirrus." httpUri="https://zenodo.org/record/289819/files/figure.png" pageId="24" pageNumber="81">Fig. 9</figureCitation>
|
||
C‒D). Interramal
|
||
<taxonomicName id="4C244D58FFAEBC0DFB88F882FB9BF8F8" box="[1033,1109,1863,1888]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="24" pageNumber="81" phylum="Annelida" rank="species" species="papilla">papilla</taxonomicName>
|
||
present, best developed in posterior parapodia (
|
||
<figureCitation id="131F2A5EFFAEBC0DFEFEF8AEFE0CF81C" box="[383,450,1899,1924]" captionStart="FIGURE 8" captionStartId="24.[151,250,1500,1522]" captionTargetBox="[165,1426,220,1472]" captionTargetId="figure@24.[151,1436,193,1478]" captionTargetPageId="24" captionText="FIGURE 8. Oligobregma mucronata n. sp. Paratypes, Sta. NBP- 21 (LACM-AHF-Poly 7014): A, anterior end, dorsal view; B, anterior end, ventral view; C, large notopodial spines from setiger 2; D, lyrate seta from posterior setiger; E, posterior parapodium, anterior view; F, pygidium, dorsal view. Abbreviations: dC, dorsal cirrus, intP; interramal papilla; lL, lower lip of mouth; neP, neuropodium; noP, notopodium; per, peristomium; pr, prostomium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove." httpUri="https://zenodo.org/record/289818/files/figure.png" pageId="24" pageNumber="81">Fig. 8</figureCitation>
|
||
E).
|
||
</paragraph>
|
||
<paragraph id="8B9B36DBFFAEBC0CFF46F855FCD6FE34" blockId="24.[151,1436,1683,2032]" lastBlockId="25.[151,1437,151,2013]" lastPageId="25" lastPageNumber="82" pageId="24" pageNumber="81">
|
||
Heavy curved acicular spines present in both noto- and neuropodia of setigers 1‒3 (
|
||
<figureCitation id="131F2A5EFFAEBC0DFBE7F84AFB69F830" box="[1126,1191,1935,1960]" captionStart="FIGURE 8" captionStartId="24.[151,250,1500,1522]" captionTargetBox="[165,1426,220,1472]" captionTargetId="figure@24.[151,1436,193,1478]" captionTargetPageId="24" captionText="FIGURE 8. Oligobregma mucronata n. sp. Paratypes, Sta. NBP- 21 (LACM-AHF-Poly 7014): A, anterior end, dorsal view; B, anterior end, ventral view; C, large notopodial spines from setiger 2; D, lyrate seta from posterior setiger; E, posterior parapodium, anterior view; F, pygidium, dorsal view. Abbreviations: dC, dorsal cirrus, intP; interramal papilla; lL, lower lip of mouth; neP, neuropodium; noP, notopodium; per, peristomium; pr, prostomium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove." httpUri="https://zenodo.org/record/289818/files/figure.png" pageId="24" pageNumber="81">Fig. 8</figureCitation>
|
||
A‒B); notopodia with up to 12 spines arranged in two rows in setigers 1‒2 and single row with up to seven spines in setiger 3, spines accompanied posteriorly by single row of capillaries; neuropodia with 3‒5 spines in single row in setigers 1‒3, accompanied by posterior row of capillaries; spines curved, narrowing to blunt tip bearing thin terminal arista (
|
||
<figureCitation id="131F2A5EFFAFBC0CFAEEFF52FF6BFF4C" captionStart="FIGURE 8" captionStartId="24.[151,250,1500,1522]" captionTargetBox="[165,1426,220,1472]" captionTargetId="figure@24.[151,1436,193,1478]" captionTargetPageId="24" captionText="FIGURE 8. Oligobregma mucronata n. sp. Paratypes, Sta. NBP- 21 (LACM-AHF-Poly 7014): A, anterior end, dorsal view; B, anterior end, ventral view; C, large notopodial spines from setiger 2; D, lyrate seta from posterior setiger; E, posterior parapodium, anterior view; F, pygidium, dorsal view. Abbreviations: dC, dorsal cirrus, intP; interramal papilla; lL, lower lip of mouth; neP, neuropodium; noP, notopodium; per, peristomium; pr, prostomium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove." httpUri="https://zenodo.org/record/289818/files/figure.png" pageId="25" pageNumber="82">Fig. 8</figureCitation>
|
||
C); internal fibrils in spines apparent; notopodial spines more robust than those of neuropodia. Short spinous setae anterior to heavy spines absent. Setiger 4 with lyrate setae anterior to a row of short curved pointed setae and a third row of long, thin capillaries; setiger 4 therefore transitional between first three setigers bearing heavy curved spines and subsequent body segments having long thin capillaries. Lyrate setae continue on subsequent segments anterior to capillaries that generally occur in two rows from setiger 5. Lyrate setae from setiger 4, short, with unequal tynes bearing short bristles (
|
||
<figureCitation id="131F2A5EFFAFBC0CFDD5FEAAFD68FE10" box="[596,678,367,392]" captionStart="FIGURE 8" captionStartId="24.[151,250,1500,1522]" captionTargetBox="[165,1426,220,1472]" captionTargetId="figure@24.[151,1436,193,1478]" captionTargetPageId="24" captionText="FIGURE 8. Oligobregma mucronata n. sp. Paratypes, Sta. NBP- 21 (LACM-AHF-Poly 7014): A, anterior end, dorsal view; B, anterior end, ventral view; C, large notopodial spines from setiger 2; D, lyrate seta from posterior setiger; E, posterior parapodium, anterior view; F, pygidium, dorsal view. Abbreviations: dC, dorsal cirrus, intP; interramal papilla; lL, lower lip of mouth; neP, neuropodium; noP, notopodium; per, peristomium; pr, prostomium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove." httpUri="https://zenodo.org/record/289818/files/figure.png" pageId="25" pageNumber="82">Figs. 8</figureCitation>
|
||
D, 9K), numbering 3‒4 per noto- and neuropodium in anterior segments and
|
||
<quantity id="4CDC9B3EFFAFBC0CFEB7FE51FE45FE35" box="[310,395,404,429]" metricMagnitude="-1" metricUnit="m" metricValue="2.286" metricValueMax="2.54" metricValueMin="2.032" pageId="25" pageNumber="82" unit="in" value="9.0" valueMax="10.0" valueMin="8.0">8‒10 in</quantity>
|
||
posterior most segments (
|
||
<figureCitation id="131F2A5EFFAFBC0CFD30FE51FD3AFE34" box="[689,756,404,429]" captionStart="FIGURE 9" captionStartId="26.[151,250,1613,1635]" captionTargetBox="[151,1431,194,1587]" captionTargetId="figure@26.[151,1436,193,1591]" captionTargetPageId="26" captionText="FIGURE 9. Oligobregma mucronata n. sp. Photomicrographs: A, holotype, Sta. NBP- 21 (LACM-AHF Poly 7013), anterior half of body in ventral view; B, posterior parapodium, anterior view; C, same parapodium, detail of dorsal cirrus and internal glands; D, same parapodium, detail of ventral cirrus and internal glands; E ‒ I, developmental series of the prostomium (E, Sta. NBP- 18, 20 setigers, 2.4 mm long; F, Sta. NBP- 21, 22 setigers, 2.8 mm long; G, Sta. NBP- 04, 24 setigers, 3.0 mm long; H, Sta. NBP- 13, 28 setigers, 4.0 mm long; I, Sta. NBP- 21, 30 setigers, 9.5 mm long); J, sperm packets from specimen from Sta. NBP- 20; K, capillaries and lyrate setae from a posterior notopodium from Sta. NBP- 21. Abbreviations: dC, dorsal cirrus, vC, ventral cirrus." httpUri="https://zenodo.org/record/289819/files/figure.png" pageId="25" pageNumber="82">Fig. 9</figureCitation>
|
||
K).
|
||
</paragraph>
|
||
<paragraph id="8B9B36DBFFAFBC0CFF46FE72FF0CFD1C" blockId="25.[151,1437,151,2013]" pageId="25" pageNumber="82">
|
||
<emphasis id="B950EAC9FFAFBC0CFF46FE72FEBCFE48" bold="true" box="[199,370,439,464]" pageId="25" pageNumber="82">Reproduction.</emphasis>
|
||
Sperm platelets were observed in one large
|
||
<typeStatus id="549F8879FFAFBC0CFC06FE7DFC29FE48" box="[903,999,440,464]" pageId="25" pageNumber="82" type="paratype">paratype</typeStatus>
|
||
measuring
|
||
<quantity id="4CDC9B3EFFAFBC0CFBF2FE7DFB08FE57" box="[1139,1222,440,464]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="25" pageNumber="82" unit="mm" value="10.0">10 mm</quantity>
|
||
long and with 27 setigers of
|
||
<taxonomicName id="4C244D58FFAFBC0CFE92FE19FDE8FE6C" box="[275,550,476,501]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="mucronata" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFAFBC0CFE92FE19FDE8FE6C" box="[275,550,476,501]" italics="true" pageId="25" pageNumber="82">Oligobregma mucronata</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B950EAC9FFAFBC0CFDAFFE19FDA0FE6D" bold="true" box="[558,622,476,501]" pageId="25" pageNumber="82">
|
||
<taxonomicNameLabel id="A26357B2FFAFBC0CFDAFFE19FDA0FE6D" box="[558,622,476,501]" pageId="25" pageNumber="82" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
from Sta. NBP-20 (
|
||
<figureCitation id="131F2A5EFFAFBC0CFCD0FE19FC5BFE6C" box="[849,917,476,501]" captionStart="FIGURE 9" captionStartId="26.[151,250,1613,1635]" captionTargetBox="[151,1431,194,1587]" captionTargetId="figure@26.[151,1436,193,1591]" captionTargetPageId="26" captionText="FIGURE 9. Oligobregma mucronata n. sp. Photomicrographs: A, holotype, Sta. NBP- 21 (LACM-AHF Poly 7013), anterior half of body in ventral view; B, posterior parapodium, anterior view; C, same parapodium, detail of dorsal cirrus and internal glands; D, same parapodium, detail of ventral cirrus and internal glands; E ‒ I, developmental series of the prostomium (E, Sta. NBP- 18, 20 setigers, 2.4 mm long; F, Sta. NBP- 21, 22 setigers, 2.8 mm long; G, Sta. NBP- 04, 24 setigers, 3.0 mm long; H, Sta. NBP- 13, 28 setigers, 4.0 mm long; I, Sta. NBP- 21, 30 setigers, 9.5 mm long); J, sperm packets from specimen from Sta. NBP- 20; K, capillaries and lyrate setae from a posterior notopodium from Sta. NBP- 21. Abbreviations: dC, dorsal cirrus, vC, ventral cirrus." httpUri="https://zenodo.org/record/289819/files/figure.png" pageId="25" pageNumber="82">Fig. 9</figureCitation>
|
||
J). These are similar in size and appearance to those described earlier for
|
||
<taxonomicName id="4C244D58FFAFBC0CFE4BFE3AFD0FFD80" box="[458,705,511,536]" class="Polychaeta" family="Scalibregmatidae" genus="Scalibregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="australis" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFAFBC0CFE4BFE3AFD0FFD80" box="[458,705,511,536]" italics="true" pageId="25" pageNumber="82">Scalibregma australis</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B950EAC9FFAFBC0CFD4AFE3AFCC2FD80" bold="true" box="[715,780,511,536]" pageId="25" pageNumber="82">
|
||
<taxonomicNameLabel id="A26357B2FFAFBC0CFD4AFE3AFCC2FD80" box="[715,780,511,536]" pageId="25" pageNumber="82" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
Individual sperm were observed to have a short rounded nucleus, middle piece consisting of two spherical mitochondria and a long tail or flagellum.
|
||
<collectingCountry id="F333764BFFAFBC0CFB20FDE1FB0EFDA4" box="[1185,1216,548,572]" name="American Samoa" pageId="25" pageNumber="82">As</collectingCountry>
|
||
with
|
||
<taxonomicName id="4C244D58FFAFBC0CFA81FDE0FAB0FDA5" box="[1280,1406,548,573]" class="Polychaeta" family="Scalibregmatidae" genus="Scalibregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="australis" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFAFBC0CFA81FDE0FAB0FDA5" box="[1280,1406,548,573]" italics="true" pageId="25" pageNumber="82">S. australis</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="A26357B2FFAFBC0CFA04FDE1FF79FDC7" pageId="25" pageNumber="82" rank="species">
|
||
<emphasis id="B950EAC9FFAFBC0CFA04FDE1FF7FFDF8" bold="true" pageId="25" pageNumber="82">n. sp</emphasis>
|
||
.
|
||
</taxonomicNameLabel>
|
||
, the sperm structure for
|
||
<taxonomicName id="4C244D58FFAFBC0CFE48FD8DFDADFDF8" box="[457,611,584,608]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="mucronata" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFAFBC0CFE48FD8DFDADFDF8" box="[457,611,584,608]" italics="true" pageId="25" pageNumber="82">
|
||
<collectingCountry id="F333764BFFAFBC0CFE48FD8DFE2EFDC7" box="[457,480,584,607]" name="Iceland" pageId="25" pageNumber="82">O</collectingCountry>
|
||
. mucronata
|
||
</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="A26357B2FFAFBC0CFDEBFD82FD66FDC7" box="[618,680,583,608]" pageId="25" pageNumber="82" rank="species">
|
||
<emphasis id="B950EAC9FFAFBC0CFDEBFD82FD6FFDF8" bold="true" box="[618,673,583,608]" pageId="25" pageNumber="82">n. sp</emphasis>
|
||
.
|
||
</taxonomicNameLabel>
|
||
suggests that they are ect-aquasperm, which are discharged into the sea.
|
||
</paragraph>
|
||
<paragraph id="8B9B36DBFFAFBC0CFF46FD4AFC1BFCA0" blockId="25.[151,1437,151,2013]" pageId="25" pageNumber="82">
|
||
<emphasis id="B950EAC9FFAFBC0CFF46FD4AFE3FFD30" bold="true" box="[199,497,655,680]" pageId="25" pageNumber="82">Morphology of juveniles.</emphasis>
|
||
The smallest juveniles available for study had 20‒21 setigers and measured
|
||
<quantity id="4CDC9B3EFFAFBC0CFAC9FD55FF0DFD54" metricMagnitude="-3" metricUnit="m" metricValue="2.55" metricValueMax="2.8" metricValueMin="2.3" pageId="25" pageNumber="82" unit="mm" value="2.55" valueMax="2.8" valueMin="2.3">2.3‒2.8 mm</quantity>
|
||
long. The noto- and neuropodial acicular spines of setigers 1‒3 develop early; these smallest juveniles had the full complement of notopodial spines on setigers 1‒3, but spines were present only on neuropodia of setigers 1‒2. A 24-setiger specimen that was 3.0 mm long had spines on setigers
|
||
<quantity id="4CDC9B3EFFAFBC0CFC10FD39FC16FC8D" box="[913,984,764,789]" metricMagnitude="-2" metricUnit="m" metricValue="5.08" metricValueMax="7.62" metricValueMin="2.54" pageId="25" pageNumber="82" unit="in" value="2.0" valueMax="3.0" valueMin="1.0">1‒3 in</quantity>
|
||
both noto- and neuropodia. Lyrate setae were present from setiger
|
||
<quantity id="4CDC9B3EFFAFBC0CFE3AFCE5FE28FCA0" box="[443,486,799,824]" metricMagnitude="-1" metricUnit="m" metricValue="1.016" pageId="25" pageNumber="82" unit="in" value="4.0">4 in</quantity>
|
||
the smallest 20-setiger specimen examined.
|
||
</paragraph>
|
||
<paragraph id="8B9B36DBFFAFBC0CFF46FC81FCF1FBAD" blockId="25.[151,1437,151,2013]" pageId="25" pageNumber="82">
|
||
While the setae or hard structures develop early, the soft morphology develops later. Changes to the prostomial morphology is shown in
|
||
<figureCitation id="131F2A5EFFAFBC0CFE32FCA2FDD8FC18" box="[435,534,871,896]" captionStart="FIGURE 9" captionStartId="26.[151,250,1613,1635]" captionTargetBox="[151,1431,194,1587]" captionTargetId="figure@26.[151,1436,193,1591]" captionTargetPageId="26" captionText="FIGURE 9. Oligobregma mucronata n. sp. Photomicrographs: A, holotype, Sta. NBP- 21 (LACM-AHF Poly 7013), anterior half of body in ventral view; B, posterior parapodium, anterior view; C, same parapodium, detail of dorsal cirrus and internal glands; D, same parapodium, detail of ventral cirrus and internal glands; E ‒ I, developmental series of the prostomium (E, Sta. NBP- 18, 20 setigers, 2.4 mm long; F, Sta. NBP- 21, 22 setigers, 2.8 mm long; G, Sta. NBP- 04, 24 setigers, 3.0 mm long; H, Sta. NBP- 13, 28 setigers, 4.0 mm long; I, Sta. NBP- 21, 30 setigers, 9.5 mm long); J, sperm packets from specimen from Sta. NBP- 20; K, capillaries and lyrate setae from a posterior notopodium from Sta. NBP- 21. Abbreviations: dC, dorsal cirrus, vC, ventral cirrus." httpUri="https://zenodo.org/record/289819/files/figure.png" pageId="25" pageNumber="82">Figure 9</figureCitation>
|
||
: E, 20 setigers (
|
||
<quantity id="4CDC9B3EFFAFBC0CFD4FFCADFCE8FCE7" box="[718,806,872,896]" metricMagnitude="-3" metricUnit="m" metricValue="2.3" pageId="25" pageNumber="82" unit="mm" value="2.3">2.3 mm</quantity>
|
||
long); F, 21 setigers (
|
||
<quantity id="4CDC9B3EFFAFBC0CFBA0FCADFBB4FCE7" box="[1057,1146,872,896]" metricMagnitude="-3" metricUnit="m" metricValue="2.8" pageId="25" pageNumber="82" unit="mm" value="2.8">2.8 mm</quantity>
|
||
long); G, 24 setigers (3.0 mm long), H, 28 setigers (4.0 mm long); and I, 30 setigers (
|
||
<quantity id="4CDC9B3EFFAFBC0CFCDAFC49FC7BFC3C" box="[859,949,908,933]" metricMagnitude="-3" metricUnit="m" metricValue="9.5" pageId="25" pageNumber="82" unit="mm" value="9.5">9.5 mm</quantity>
|
||
long). The initial prostomial shape in the available specimens is blunt across the anterior margin with a nearly square overall shape. With growth, the anterior margin becomes rounded or curved, eventually developing lateral bulges and a medial notch. The characteristic subapical lobes that become elongate and directed frontally do not develop until later, but were observed in 28-setiger juveniles that were
|
||
<quantity id="4CDC9B3EFFAFBC0CFDF0FBD9FD00FBAC" box="[625,718,1052,1077]" metricMagnitude="-3" metricUnit="m" metricValue="5.5" metricValueMax="6.0" metricValueMin="5.0" pageId="25" pageNumber="82" unit="mm" value="5.5" valueMax="6.0" valueMin="5.0">5‒6 mm</quantity>
|
||
in length.
|
||
</paragraph>
|
||
<paragraph id="8B9B36DBFFAFBC0CFF46FBFAFB8BFB5D" blockId="25.[151,1437,151,2013]" pageId="25" pageNumber="82">
|
||
The development of segments in
|
||
<taxonomicName id="4C244D58FFAFBC0CFDC9FB85FD2BFBC0" box="[584,741,1088,1112]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="mucronata" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFAFBC0CFDC9FB85FD2BFBC0" box="[584,741,1088,1112]" italics="true" pageId="25" pageNumber="82">
|
||
<collectingCountry id="F333764BFFAFBC0CFDC9FB85FD91FBCF" box="[584,607,1088,1111]" name="Iceland" pageId="25" pageNumber="82">O</collectingCountry>
|
||
. mucronata
|
||
</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B950EAC9FFAFBC0CFD6EFBFAFCFEFBC0" bold="true" box="[751,816,1087,1112]" pageId="25" pageNumber="82">
|
||
<taxonomicNameLabel id="A26357B2FFAFBC0CFD6EFBFAFCFEFBC0" box="[751,816,1087,1112]" pageId="25" pageNumber="82" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
appears to be limited to a maximal number of 28‒30 setigers; within this range, the body length ranges from
|
||
<quantity id="4CDC9B3EFFAFBC0CFC8FFBA1FCB4FBE4" box="[782,890,1124,1149]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" metricValueMax="1.6" metricValueMin="0.4" pageId="25" pageNumber="82" unit="mm" value="10.0" valueMax="16.0" valueMin="4.0">4–16 mm</quantity>
|
||
indicating that continued growth of the worm is within a defined number of final segments. Parapodia develop dorsal and ventral cirri relatively early, at about 24 setigers and a length of 4.0 mm. These cirri also develop the tubular internal glands.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C33E6550FFAFBC0EFF46FB0AFEFEFF4D" lastPageId="27" lastPageNumber="84" pageId="25" pageNumber="82" type="discussion">
|
||
<paragraph id="8B9B36DBFFAFBC0CFF46FB0AFD84F8D5" blockId="25.[151,1437,151,2013]" pageId="25" pageNumber="82">
|
||
<emphasis id="B950EAC9FFAFBC0CFF46FB0AFEF5FB70" bold="true" box="[199,315,1231,1256]" pageId="25" pageNumber="82">Remarks.</emphasis>
|
||
These specimens of
|
||
<taxonomicName id="4C244D58FFAFBC0CFDADFB0AFC8FFB70" box="[556,833,1231,1256]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="mucronata" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFAFBC0CFDADFB0AFC8FFB70" box="[556,833,1231,1256]" italics="true" pageId="25" pageNumber="82">Oligobregma mucronata</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="A26357B2FFAFBC0CFCC8FB0AFC44FB70" box="[841,906,1231,1256]" pageId="25" pageNumber="82" rank="species">
|
||
<emphasis id="B950EAC9FFAFBC0CFCC8FB0AFC4DFB70" bold="true" box="[841,899,1231,1256]" pageId="25" pageNumber="82">n. sp</emphasis>
|
||
.
|
||
</taxonomicNameLabel>
|
||
were originally identified as
|
||
<taxonomicName id="4C244D58FFAFBC0CFB5AFB15FA82FB70" box="[1243,1356,1231,1256]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="collare">
|
||
<emphasis id="B950EAC9FFAFBC0CFB5AFB15FA82FB70" box="[1243,1356,1231,1256]" italics="true" pageId="25" pageNumber="82">
|
||
<collectingCountry id="F333764BFFAFBC0CFB5AFB15FB3CFB7F" box="[1243,1266,1232,1255]" name="Iceland" pageId="25" pageNumber="82">O</collectingCountry>
|
||
. collare
|
||
</emphasis>
|
||
</taxonomicName>
|
||
due to the prostomium having two short anteriorly subapical frontal horns. Further study, however, showed that the large anterior acicular spines occurred on both the noto- and neuropodia of setigers 1‒3 instead of only the notopodia and that most of these spines terminated in a thin arista. Further, the dorsal and ventral cirri were larger and of a different shape than in
|
||
<taxonomicName id="4C244D58FFAFBC0CFE16FAA5FDC6FAE0" box="[407,520,1375,1400]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="collare">
|
||
<emphasis id="B950EAC9FFAFBC0CFE16FAA5FDC6FAE0" box="[407,520,1375,1400]" italics="true" pageId="25" pageNumber="82">
|
||
<collectingCountry id="F333764BFFAFBC0CFE16FAA5FE60FAEF" box="[407,430,1376,1399]" name="Iceland" pageId="25" pageNumber="82">O</collectingCountry>
|
||
. collare
|
||
</emphasis>
|
||
</taxonomicName>
|
||
, with both cirri bearing internal glands similar to those described for
|
||
<taxonomicName id="4C244D58FFAFBC0CFA8EFA9AFF37FA05" class="Polychaeta" family="Scalibregmatidae" genus="Scalibregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="australis" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFAFBC0CFA8EFA9AFF37FA05" italics="true" pageId="25" pageNumber="82">Scalibregma australis</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="A26357B2FFAFBC0CFF7EFA41FEF0FA04" box="[255,318,1412,1437]" pageId="25" pageNumber="82" rank="species">
|
||
<emphasis id="B950EAC9FFAFBC0CFF7EFA41FEF8FA05" bold="true" box="[255,310,1412,1437]" pageId="25" pageNumber="82">n. sp</emphasis>
|
||
.
|
||
</taxonomicNameLabel>
|
||
and
|
||
<taxonomicName id="4C244D58FFAFBC0CFEF5FA41FD60FA05" box="[372,686,1412,1437]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="palmeri" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFAFBC0CFEF5FA41FD60FA05" box="[372,686,1412,1437]" italics="true" pageId="25" pageNumber="82">Pseudoscalibregma palmeri</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B950EAC9FFAFBC0CFD35FA41FD3DFA05" bold="true" box="[692,755,1412,1437]" pageId="25" pageNumber="82">
|
||
<taxonomicNameLabel id="A26357B2FFAFBC0CFD35FA41FD3DFA05" box="[692,755,1412,1437]" pageId="25" pageNumber="82" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
To date,
|
||
<taxonomicName id="4C244D58FFAFBC0CFCDAFA40FC3AFA04" box="[859,1012,1413,1436]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="mucronata" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFAFBC0CFCDAFA40FC3AFA04" box="[859,1012,1413,1436]" italics="true" pageId="25" pageNumber="82">
|
||
<collectingCountry id="F333764BFFAFBC0CFCDAFA40FCBCFA04" box="[859,882,1413,1436]" name="Iceland" pageId="25" pageNumber="82">O</collectingCountry>
|
||
. mucronata
|
||
</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B950EAC9FFAFBC0CFC7DFA41FBF4FA05" bold="true" box="[1020,1082,1412,1437]" pageId="25" pageNumber="82">
|
||
<taxonomicNameLabel id="A26357B2FFAFBC0CFC7DFA41FBF4FA05" box="[1020,1082,1412,1437]" pageId="25" pageNumber="82" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
is the only species of the genus from
|
||
<collectingCountry id="F333764BFFAFBC0CFF55FA62FEF2FA58" box="[212,316,1447,1472]" name="Antarctica" pageId="25" pageNumber="82">Antarctic</collectingCountry>
|
||
waters known to have large curved acicular spines in both noto- and neuropodia of anterior setigers. Examination of specimens of the type-species,
|
||
<taxonomicName id="4C244D58FFAFBC0CFD45FA08FC9DFA7D" box="[708,851,1484,1509]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="aciculata">
|
||
<emphasis id="B950EAC9FFAFBC0CFD45FA08FC9DFA7D" box="[708,851,1484,1509]" italics="true" pageId="25" pageNumber="82">
|
||
<collectingCountry id="F333764BFFAFBC0CFD45FA08FD15FA7C" box="[708,731,1485,1508]" name="Iceland" pageId="25" pageNumber="82">O</collectingCountry>
|
||
. aciculata
|
||
</emphasis>
|
||
</taxonomicName>
|
||
(from deep-water off the Western North Atlantic collected as part of the Atlantic Continental Slope and Rise Program (ACSAR)) permitted elaboration of the original description which was based on a single incomplete specimen.
|
||
<taxonomicName id="4C244D58FFAFBC0CFC41F9D0FB85F9B5" box="[960,1099,1556,1581]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="aciculata">
|
||
<emphasis id="B950EAC9FFAFBC0CFC41F9D0FB85F9B5" box="[960,1099,1556,1581]" italics="true" pageId="25" pageNumber="82">
|
||
<collectingCountry id="F333764BFFAFBC0CFC41F9D0FC19F9B4" box="[960,983,1557,1580]" name="Iceland" pageId="25" pageNumber="82">O</collectingCountry>
|
||
. aciculata
|
||
</emphasis>
|
||
</taxonomicName>
|
||
, like
|
||
<taxonomicName id="4C244D58FFAFBC0CFB0DF9D0FAE9F9B4" box="[1164,1319,1557,1580]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="mucronata" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFAFBC0CFB0DF9D0FAE9F9B4" box="[1164,1319,1557,1580]" italics="true" pageId="25" pageNumber="82">
|
||
<collectingCountry id="F333764BFFAFBC0CFB0DF9D0FB6DF9B4" box="[1164,1187,1557,1580]" name="Iceland" pageId="25" pageNumber="82">O</collectingCountry>
|
||
. mucronata
|
||
</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B950EAC9FFAFBC0CFAAEF9D1FAA0F9B5" bold="true" box="[1327,1390,1556,1581]" pageId="25" pageNumber="82">
|
||
<taxonomicNameLabel id="A26357B2FFAFBC0CFAAEF9D1FAA0F9B5" box="[1327,1390,1556,1581]" pageId="25" pageNumber="82" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
has acicular spines in noto- and neuropodia of setigers 1–3 and similar appearing frontal horns. However, a few short spinous setae occur anterior to the large acicular spines in
|
||
<taxonomicName id="4C244D58FFAFBC0CFCB5F998FC0EF9ED" box="[820,960,1628,1653]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="aciculata">
|
||
<emphasis id="B950EAC9FFAFBC0CFCB5F998FC0EF9ED" box="[820,960,1628,1653]" italics="true" pageId="25" pageNumber="82">
|
||
<collectingCountry id="F333764BFFAFBC0CFCB5F998FC85F9EC" box="[820,843,1629,1652]" name="Iceland" pageId="25" pageNumber="82">O</collectingCountry>
|
||
. aciculata
|
||
</emphasis>
|
||
</taxonomicName>
|
||
, but are absent in
|
||
<taxonomicName id="4C244D58FFAFBC0CFB17F998FAFCF9EC" box="[1174,1330,1629,1652]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="mucronata" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFAFBC0CFB17F998FAFCF9EC" box="[1174,1330,1629,1652]" italics="true" pageId="25" pageNumber="82">
|
||
<collectingCountry id="F333764BFFAFBC0CFB17F998FB63F9EC" box="[1174,1197,1629,1652]" name="Iceland" pageId="25" pageNumber="82">O</collectingCountry>
|
||
. mucronata
|
||
</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B950EAC9FFAFBC0CFABAF999FAB2F9ED" bold="true" box="[1339,1404,1628,1653]" pageId="25" pageNumber="82">
|
||
<taxonomicNameLabel id="A26357B2FFAFBC0CFABAF999FAB2F9ED" box="[1339,1404,1628,1653]" pageId="25" pageNumber="82" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
In addition, the form of the dorsal and ventral cirri differs significantly between the two taxa. In
|
||
<taxonomicName id="4C244D58FFAFBC0CFB63F945FAA1F900" box="[1250,1391,1663,1688]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="aciculata">
|
||
<emphasis id="B950EAC9FFAFBC0CFB63F945FAA1F900" box="[1250,1391,1663,1688]" italics="true" pageId="25" pageNumber="82">
|
||
<collectingCountry id="F333764BFFAFBC0CFB63F945FB37F90F" box="[1250,1273,1664,1687]" name="Iceland" pageId="25" pageNumber="82">O</collectingCountry>
|
||
. aciculata
|
||
</emphasis>
|
||
</taxonomicName>
|
||
the dorsal cirrus is small oval and rounded on the tip and the ventral cirrus is larger, round and globular (not pointed as in
|
||
<bibRefCitation id="EFB54B2AFFAFBC0CFF34F90DFEB9F978" author="Hartman" box="[181,375,1735,1760]" pageId="25" pageNumber="82" refString="Hartman, O. (1965) Deep-water benthic polychaetous annelids off New England to Bermuda and other North Atlantic areas. Allan Hancock Foundation Publications Occasional Paper, 28, 1 - 378." type="journal article" year="1965">Hartman (1965))</bibRefCitation>
|
||
; whereas in
|
||
<taxonomicName id="4C244D58FFAFBC0CFD86F90DFD6DF978" box="[519,675,1736,1760]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="mucronata" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFAFBC0CFD86F90DFD6DF978" box="[519,675,1736,1760]" italics="true" pageId="25" pageNumber="82">
|
||
<collectingCountry id="F333764BFFAFBC0CFD86F90DFDD0F947" box="[519,542,1736,1759]" name="Iceland" pageId="25" pageNumber="82">O</collectingCountry>
|
||
. mucronata
|
||
</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B950EAC9FFAFBC0CFD2DF902FD22F978" bold="true" box="[684,748,1735,1760]" pageId="25" pageNumber="82">
|
||
<taxonomicNameLabel id="A26357B2FFAFBC0CFD2DF902FD22F978" box="[684,748,1735,1760]" pageId="25" pageNumber="82" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
, the dorsal cirrus is triangular and pointed at the tip and the ventral cirrus has a broad asymmetrical base and tapers to a pointed tip. Further, the acicular spines of
|
||
<taxonomicName id="4C244D58FFAFBC0CFA93F928FA52F89D" box="[1298,1436,1772,1797]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="aciculata">
|
||
<emphasis id="B950EAC9FFAFBC0CFA93F928FA52F89D" box="[1298,1436,1772,1797]" italics="true" pageId="25" pageNumber="82">
|
||
<collectingCountry id="F333764BFFAFBC0CFA93F928FAE7F89C" box="[1298,1321,1773,1796]" name="Iceland" pageId="25" pageNumber="82">O</collectingCountry>
|
||
. aciculata
|
||
</emphasis>
|
||
</taxonomicName>
|
||
taper to a long capillary-like tip and are not mucronate; blunt-tipped acicular spines reported by
|
||
<bibRefCitation id="EFB54B2AFFAFBC0CFB66F8D5FA52F8B0" author="Hartman" box="[1255,1436,1807,1832]" pageId="25" pageNumber="82" refString="Hartman, O. (1965) Deep-water benthic polychaetous annelids off New England to Bermuda and other North Atlantic areas. Allan Hancock Foundation Publications Occasional Paper, 28, 1 - 378." type="journal article" year="1965">Hartman (1965)</bibRefCitation>
|
||
were not observed in the new material.
|
||
</paragraph>
|
||
<paragraph id="8B9B36DBFFAFBC0CFF46F892FEE0F844" blockId="25.[151,1437,151,2013]" pageId="25" pageNumber="82">
|
||
<taxonomicName id="4C244D58FFAFBC0CFF46F892FE12F8E8" box="[199,476,1879,1904]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="mucronata" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFAFBC0CFF46F892FE12F8E8" box="[199,476,1879,1904]" italics="true" pageId="25" pageNumber="82">Oligobregma mucronata</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B950EAC9FFAFBC0CFE65F892FDEBF8E8" bold="true" box="[484,549,1879,1904]" pageId="25" pageNumber="82">
|
||
<taxonomicNameLabel id="A26357B2FFAFBC0CFE65F892FDEBF8E8" box="[484,549,1879,1904]" pageId="25" pageNumber="82" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
bears some resemblance to
|
||
<taxonomicName id="4C244D58FFAFBC0CFCE6F89DFBE5F8E8" box="[871,1067,1879,1904]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="quadrispinosa">
|
||
<emphasis id="B950EAC9FFAFBC0CFCE6F89DFBE5F8E8" box="[871,1067,1879,1904]" italics="true" pageId="25" pageNumber="82">
|
||
<collectingCountry id="F333764BFFAFBC0CFCE6F89DFCB0F8F7" box="[871,894,1880,1903]" name="Iceland" pageId="25" pageNumber="82">O</collectingCountry>
|
||
. quadrispinosa
|
||
</emphasis>
|
||
</taxonomicName>
|
||
from deep water in the Weddell Sea. However, the prostomium and nature of the dorsal and ventral cirri is different in
|
||
<taxonomicName id="4C244D58FFAFBC0CFBF7F8B8FAF7F80D" box="[1142,1337,1916,1941]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="25" pageNumber="82" phylum="Annelida" rank="species" species="quadrispinosa">
|
||
<emphasis id="B950EAC9FFAFBC0CFBF7F8B8FAF7F80D" box="[1142,1337,1916,1941]" italics="true" pageId="25" pageNumber="82">
|
||
<collectingCountry id="F333764BFFAFBC0CFBF7F8B8FB43F80C" box="[1142,1165,1917,1940]" name="Iceland" pageId="25" pageNumber="82">O</collectingCountry>
|
||
. quadrispinosa
|
||
</emphasis>
|
||
</taxonomicName>
|
||
and this species is reported to have heavy spines in the notopodia of setigers 1‒4 but no neuropodial spines (
|
||
<bibRefCitation id="EFB54B2AFFAFBC0CFA9FF865FEECF844" author="Schuller" pageId="25" pageNumber="82" refString="Schuller, M. & Hilbig, B. (2007) Three new species of the genus Oligobregma (Polychaeta, Scalibregmatidae) from the Scotia and Weddell Seas (Antarctica). Zootaxa, 1391, 35 - 45." type="journal article" year="2007">Schüller & Hilbig 2007</bibRefCitation>
|
||
).
|
||
</paragraph>
|
||
<caption id="DF5B6653FFACBC0FFF16F988FF16F883" httpUri="https://zenodo.org/record/289819/files/figure.png" pageId="26" pageNumber="83" targetBox="[151,1431,194,1587]" targetPageId="26">
|
||
<paragraph id="8B9B36DBFFACBC0FFF16F988FF16F883" blockId="26.[151,1436,1613,1819]" pageId="26" pageNumber="83">
|
||
<emphasis id="B950EAC9FFACBC0FFF16F988FEDAF9FB" bold="true" box="[151,276,1613,1635]" pageId="26" pageNumber="83">FIGURE 9.</emphasis>
|
||
<taxonomicName id="4C244D58FFACBC0FFE9DF988FDD9F9FB" box="[284,535,1613,1635]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="26" pageNumber="83" phylum="Annelida" rank="species" species="mucronata" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFACBC0FFE9DF988FDD9F9FB" box="[284,535,1613,1635]" italics="true" pageId="26" pageNumber="83">Oligobregma mucronata</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B950EAC9FFACBC0FFD9FF988FD97F9FB" bold="true" box="[542,601,1613,1635]" pageId="26" pageNumber="83">
|
||
<taxonomicNameLabel id="A26357B2FFACBC0FFD9FF988FD97F9FB" box="[542,601,1613,1635]" pageId="26" pageNumber="83" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
Photomicrographs: A, holotype, Sta. NBP-21 (LACM-AHF Poly 7013), anterior half of body in ventral view; B, posterior parapodium, anterior view; C, same parapodium, detail of dorsal cirrus and internal glands; D, same parapodium, detail of ventral cirrus and internal glands; E‒I, developmental series of the prostomium (E, Sta. NBP-18, 20 setigers, 2.4 mm long; F, Sta.NBP-21, 22 setigers, 2.8 mm long; G, Sta. NBP-04, 24 setigers, 3.0 mm long; H, Sta. NBP-13, 28 setigers, 4.0 mm long; I, Sta. NBP-21, 30 setigers, 9.5 mm long); J, sperm packets from specimen from Sta. NBP- 20; K, capillaries and lyrate setae from a posterior notopodium from Sta. NBP-21. Abbreviations: dC, dorsal cirrus, vC, ventral cirrus.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="8B9B36DBFFACBC0FFF46F887FA53F873" blockId="26.[151,1437,1858,2027]" pageId="26" pageNumber="83">
|
||
The development of juvenile morphology indicates that the noto- and neuropodial acicular spines are present at least by the 20-setiger stage and with a length of
|
||
<quantity id="4CDC9B3EFFACBC0FFD43F8A2FCD2F8E6" box="[706,796,1895,1919]" metricMagnitude="-3" metricUnit="m" metricValue="2.3" pageId="26" pageNumber="83" unit="mm" value="2.3">2.3 mm</quantity>
|
||
. In contrast, the characteristic form of the prostomium is not developed until at least 28 setigers with a length of
|
||
<quantity id="4CDC9B3EFFACBC0FFCABF84FFC45F83A" box="[810,907,1930,1955]" metricMagnitude="-3" metricUnit="m" metricValue="5.5" metricValueMax="6.0" metricValueMin="5.0" pageId="26" pageNumber="83" unit="mm" value="5.5" valueMax="6.0" valueMin="5.0">5‒6 mm</quantity>
|
||
have developed. These results, like those for
|
||
<taxonomicName id="4C244D58FFACBC0FFF16F86BFE5FF85F" box="[151,401,1966,1991]" class="Polychaeta" family="Scalibregmatidae" genus="Scalibregma" kingdom="Animalia" pageId="26" pageNumber="83" phylum="Annelida" rank="species" species="australis" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFACBC0FFF16F86BFE5FF85F" box="[151,401,1966,1991]" italics="true" pageId="26" pageNumber="83">Scalibregma australis</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B950EAC9FFACBC0FFE1DF86BFE2EF85F" bold="true" box="[412,480,1966,1991]" pageId="26" pageNumber="83">
|
||
<taxonomicNameLabel id="A26357B2FFACBC0FFE1DF86BFE2EF85F" box="[412,480,1966,1991]" pageId="26" pageNumber="83" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
suggest that small specimens of scalibregmatids cannot be specifically identified without sufficient numbers of specimens available to identify a growth sequence and transition of characters.
|
||
</paragraph>
|
||
<paragraph id="8B9B36DBFFADBC0EFF16FF52FEFEFF4D" blockId="27.[151,1437,151,717]" pageId="27" pageNumber="84">Before reaching the final configuration, the prostomium passes through growth phases that have been described for other species.</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C33E6550FFADBC0EFF46FF1AFC4DFD30" pageId="27" pageNumber="84" type="etymology">
|
||
<paragraph id="8B9B36DBFFADBC0EFF46FF1AFD79FE84" blockId="27.[151,1437,151,717]" pageId="27" pageNumber="84">
|
||
<emphasis id="B950EAC9FFADBC0EFF46FF1AFE80FF60" bold="true" box="[199,334,223,248]" pageId="27" pageNumber="84">Etymology.</emphasis>
|
||
The epithet is derived from the Latin
|
||
<emphasis id="B950EAC9FFADBC0EFD78FF24FCF1FF60" box="[761,831,225,248]" italics="true" pageId="27" pageNumber="84">mucro</emphasis>
|
||
, referring to a sharply pointed thin aristate-like tip on some of the large acicular spines of setigers 1‒3.
|
||
</paragraph>
|
||
<paragraph id="8B9B36DBFFADBC0EFF46FEE2FC4DFD30" blockId="27.[151,1437,151,717]" pageId="27" pageNumber="84">
|
||
<emphasis id="B950EAC9FFADBC0EFF46FEE2FEE5FED8" bold="true" box="[199,299,295,320]" pageId="27" pageNumber="84">Ecology.</emphasis>
|
||
Specimens of
|
||
<taxonomicName id="4C244D58FFADBC0EFE5CFEE2FD3AFED8" box="[477,756,295,320]" class="Polychaeta" family="Scalibregmatidae" genus="Oligobregma" kingdom="Animalia" pageId="27" pageNumber="84" phylum="Annelida" rank="species" species="mucronata" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFADBC0EFE5CFEE2FD3AFED8" box="[477,756,295,320]" italics="true" pageId="27" pageNumber="84">Oligobregma mucronata</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B950EAC9FFADBC0EFD7EFEE2FC8CFED8" bold="true" box="[767,834,295,320]" pageId="27" pageNumber="84">
|
||
<taxonomicNameLabel id="A26357B2FFADBC0EFD7EFEE2FC8CFED8" box="[767,834,295,320]" pageId="27" pageNumber="84" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
collected as part of the LIS-A survey were mostly limited to the nearshore Greenpeace Trough, newly open to the sea and discovered by multibeam bathymetry during the survey in
|
||
<date id="FF9A101BFFADBC0EFEFFFEB5FE3AFE10" box="[382,500,368,392]" pageId="27" pageNumber="84" value="2000-05">May 2000</date>
|
||
. These nearshore sediments were described from
|
||
<quantity id="4CDC9B3EFFADBC0EFBA0FEAAFB5EFE1F" box="[1057,1168,367,392]" metricMagnitude="-1" metricUnit="m" metricValue="2.25" metricValueMax="2.5" metricValueMin="2.0" pageId="27" pageNumber="84" unit="cm" value="22.5" valueMax="25.0" valueMin="20.0">20‒25 cm</quantity>
|
||
cores as coarse-grained in the upper
|
||
<quantity id="4CDC9B3EFFADBC0EFEB1FE51FEA2FE34" box="[304,364,404,429]" metricMagnitude="-2" metricUnit="m" metricValue="5.0" pageId="27" pageNumber="84" unit="cm" value="5.0">5 cm</quantity>
|
||
near the surface, overlying fine-grained silt and clay size sediments with depth (
|
||
<bibRefCitation id="EFB54B2AFFADBC0EFAABFE51FEF7FE48" author="Gilbert" pageId="27" pageNumber="84" refString="Gilbert, R. & Domack, E. W. (2003) Sedimentary record of disintegrating ice shelves in a warming climate, Antarctic Peninsula. Geochemistry, Geophysics, Geosystems, 4 (4), 1 - 12." type="journal article" year="2003">Gilbert & Domack 2003</bibRefCitation>
|
||
). While the nature of coarse-grained surficial sediments and deeper fine-grained sediments provide a variable sedimentary habitat, the seafloor at this site also appeared to be in a constant state of disturbance due to the presence of numerous deposit-feeding elasapoid holothurians,
|
||
<taxonomicName id="4C244D58FFADBC0EFCD7FE3AFB6FFD80" authority="Theel, 1876" authorityName="Theel" authorityYear="1876" box="[854,1185,511,536]" class="Holothuroidea" family="Elpidiidae" genus="Elpidia" kingdom="Animalia" order="Elasipodida" pageId="27" pageNumber="84" phylum="Echinodermata" rank="species" species="glacialis">
|
||
<emphasis id="B950EAC9FFADBC0EFCD7FE3AFBDEFD80" box="[854,1040,511,536]" italics="true" pageId="27" pageNumber="84">Elpidia glacialis</emphasis>
|
||
Théel, 1876
|
||
</taxonomicName>
|
||
, which were observed by video to be constantly moving over the surface. Several of the holothurians were observed on the surface of
|
||
<date id="FF9A101BFFADBC0EFA01FDE1FF06FDF8" pageId="27" pageNumber="84" value="2010-10-10">10 X 10</date>
|
||
X
|
||
<quantity id="4CDC9B3EFFADBC0EFF64FD82FEE4FDC7" box="[229,298,583,608]" metricMagnitude="-1" metricUnit="m" metricValue="5.0" pageId="27" pageNumber="84" unit="cm" value="50.0">50 cm</quantity>
|
||
megacore tubes collected in the Greenpeace Trough (Blake & Maciolek unpublished).
|
||
<collectingCountry id="F333764BFFADBC0EFA80FD8DFAEEFDF8" box="[1281,1312,584,608]" name="American Samoa" pageId="27" pageNumber="84">As</collectingCountry>
|
||
burrowing deposit feeders, scalibregmatids would be better adapted to such an environment than tube-building species.
|
||
<taxonomicName id="4C244D58FFADBC0EFF16FD4AFE42FD30" box="[151,396,655,680]" class="Polychaeta" family="Scalibregmatidae" genus="Scalibregma" kingdom="Animalia" pageId="27" pageNumber="84" phylum="Annelida" rank="species" species="australis" status="sp. nov.">
|
||
<emphasis id="B950EAC9FFADBC0EFF16FD4AFE42FD30" box="[151,396,655,680]" italics="true" pageId="27" pageNumber="84">Scalibregma australis</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B950EAC9FFADBC0EFE12FD4AFE1CFD30" bold="true" box="[403,466,655,680]" pageId="27" pageNumber="84">
|
||
<taxonomicNameLabel id="A26357B2FFADBC0EFE12FD4AFE1CFD30" box="[403,466,655,680]" pageId="27" pageNumber="84" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
was also abundant in these sediments.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C33E6550FFADBC0EFF46FD71FBB6FD54" box="[199,1144,692,717]" pageId="27" pageNumber="84" type="distribution">
|
||
<paragraph id="8B9B36DBFFADBC0EFF46FD71FBB6FD54" blockId="27.[151,1437,151,717]" box="[199,1144,692,717]" pageId="27" pageNumber="84">
|
||
<emphasis id="B950EAC9FFADBC0EFF46FD71FEAEFD55" bold="true" box="[199,352,692,717]" pageId="27" pageNumber="84">Distribution.</emphasis>
|
||
East
|
||
<collectingCountry id="F333764BFFADBC0EFE1FFD71FDC8FD55" box="[414,518,692,717]" name="Antarctica" pageId="27" pageNumber="84">Antarctic</collectingCountry>
|
||
Peninsula, former Larsen Ice Shelf A area,
|
||
<quantity id="4CDC9B3EFFADBC0EFC73FD71FBBAFD54" box="[1010,1140,692,716]" metricMagnitude="2" metricUnit="m" metricValue="6.175" metricValueMax="9.12" metricValueMin="3.2299999999999995" pageId="27" pageNumber="84" unit="m" value="617.5" valueMax="912.0" valueMin="323.0">
|
||
323‒
|
||
<specimenCount id="9D22FD52FFADBC0EFBA8FD71FBBAFD54" box="[1065,1140,692,716]" pageId="27" pageNumber="84" type="generic">912 m</specimenCount>
|
||
</quantity>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |