treatments-xml/data/E6/79/B6/E679B631FFAAFF8487EFF9E0FD33FE6F.xml
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<document id="EF3F99804290206864A3C27A49C5256B" ID-DOI="10.3853/j.2201-4349.75.2023.1800" ID-ISSN="2201-4349" ID-Zenodo-Dep="10414191" IM.bibliography_approvedBy="carolina" IM.illustrations_approvedBy="carolina" IM.materialsCitations_approvedBy="carolina" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="carolina" IM.treatmentCitations_approvedBy="felipe" IM.treatments_approvedBy="carolina" checkinTime="1703108841751" checkinUser="felipe" docAuthor="Georgieva, Magdalena N., Wiklund, Helena, Ramos, Dino A., Neal, Lenka, Glasby, Christopher J. &amp; Gunton, Laetitia M." docDate="2023" docId="E679B631FFAAFF8487EFF9E0FD33FE6F" docLanguage="en" docName="RecAustMus.75.3.167-213.pdf" docOrigin="Records of the Australian Museum (Rec. Aust. Mus.) 75 (3)" docSource="http://dx.doi.org/10.3853/j.2201-4349.75.2023.1800" docStyle="DocumentStyle:997BA24B490466A2F99594A367FA147F.4:RecAustMus.2019-.journal_article.0cover" docStyleId="997BA24B490466A2F99594A367FA147F" docStyleName="RecAustMus.2019-.journal_article.0cover" docStyleVersion="4" docTitle="Orbiniella Day 1954" docType="treatment" docVersion="7" lastPageNumber="195" masterDocId="1A40CE49FFB3FF998400FFBFFFDAFFBA" masterDocTitle="The Annelid Community of a Natural Deep-sea Whale Fall off Eastern Australia" masterLastPageNumber="213" masterPageNumber="167" pageNumber="192" updateTime="1713531632627" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-4.0">
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<mods:title id="ED405098C9963EE6F5E6E3AA6EFE85FC">The Annelid Community of a Natural Deep-sea Whale Fall off Eastern Australia</mods:title>
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<mods:namePart id="EB313EF3733307631BA5CC015920D205">Georgieva, Magdalena N.</mods:namePart>
<mods:affiliation id="C05881D2021EBB047F4DF529800D2DEF">Life Sciences Department, Natural History Museum, London, United Kingdom &amp; Univ. Brest, CNRS, Ifremer, UMR 6197 Biologie et Ecologie des Ecosystèmes marins Profonds, Plouzané, France</mods:affiliation>
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<mods:namePart id="EEFCB309238ED26D861E2C8C88807023">Wiklund, Helena</mods:namePart>
<mods:affiliation id="62DD06FB8A8D545C3952F95DD44B017A">Life Sciences Department, Natural History Museum, London, United Kingdom &amp; Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden &amp; Gothenburg Global Biodiversity Centre, Gothenburg, Sweden</mods:affiliation>
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<mods:namePart id="5C69B4D3AF4CF4D5CC46CFE2497CDE23">Ramos, Dino A.</mods:namePart>
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<mods:affiliation id="29CE0EF5ED255FC001216103306EBB81">Life Sciences Department, Natural History Museum, London, United Kingdom</mods:affiliation>
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<mods:namePart id="FFF15D3467A7D3C4C1654EED2AB9BD83">Glasby, Christopher J.</mods:namePart>
<mods:affiliation id="331B737A106CE308EB2E79AD65C55D1E">Australian Museum Research Institute, Australian Museum, Sydney, Australia &amp; Natural Sciences, Museum and Art Gallery of the Northern Territory, Darwin, Australia &amp; Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, Australia</mods:affiliation>
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sp.
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, beam trawl, start:
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DNA vouchers:
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<emphasis id="5CA4DB35FFA9FF8384A6F8BCFEDDF8A2" bold="true" box="[166,263,1795,1817]" pageId="26" pageNumber="193">Figure 18</emphasis>
.
<taxonomicName id="A9D07CA4FFA9FF838516F8BCFE67F8A3" authority="Georgieva &amp; Wiklund &amp; Ramos &amp; Neal &amp; Glasby &amp; Gunton, 2023" authorityName="Georgieva &amp; Wiklund &amp; Ramos &amp; Neal &amp; Glasby &amp; Gunton" authorityYear="2023" box="[278,445,1795,1817]" class="Polychaeta" family="Orbiniidae" genus="Orbiniella" kingdom="Animalia" pageId="26" pageNumber="193" phylum="Annelida" rank="species" species="jamesi" status="sp. nov.">
<emphasis id="5CA4DB35FFA9FF838516F8BCFE67F8A3" box="[278,445,1795,1817]" italics="true" pageId="26" pageNumber="193">Orbiniella jamesi</emphasis>
</taxonomicName>
<taxonomicNameLabel id="4797664EFFA9FF8385C2F8BCFDD6F8A2" box="[450,524,1795,1816]" pageId="26" pageNumber="193" rank="species">sp. nov.</taxonomicNameLabel>
(
<emphasis id="5CA4DB35FFA9FF83861EF8BCFDF7F8A2" box="[542,557,1795,1816]" italics="true" pageId="26" pageNumber="193">A</emphasis>
) Live specimen (holotype AM W.53705), scale is 1 mm; (
<emphasis id="5CA4DB35FFA9FF838056F8BBFBBFF8A3" box="[1110,1125,1796,1817]" italics="true" pageId="26" pageNumber="193">B</emphasis>
) preserved specimen (holotype AM W.53705) in ventro-lateral view; (
<emphasis id="5CA4DB35FFA9FF8385EFF8A1FE25F889" box="[495,511,1822,1843]" italics="true" pageId="26" pageNumber="193">C</emphasis>
) prostomium in dorsal view, NHMUK ANEA 2023.1201; (
<emphasis id="5CA4DB35FFA9FF838039F8A1FB90F889" box="[1081,1098,1822,1843]" italics="true" pageId="26" pageNumber="193">D</emphasis>
) anterior parapodium with postchaetal lobe (holotype AM W.53705), scale bar is 100 µm; (
<emphasis id="5CA4DB35FFA9FF8386A5F886FD6EF8F4" box="[677,692,1849,1870]" italics="true" pageId="26" pageNumber="193">E</emphasis>
) mid-body neuropodial postchaetal lobe, specimen NHMUK ANEA 2023.1201, scale bar is 25 µm; (
<emphasis id="5CA4DB35FFA9FF838579F8EBFE52F8D3" box="[377,392,1876,1897]" italics="true" pageId="26" pageNumber="193">F</emphasis>
) small ovoid branchiae, specimen NHMUK ANEA 2023.1201, scale bar is 100 µm; (
<emphasis id="5CA4DB35FFA9FF8380DAF8ECFB31F8D2" box="[1242,1259,1875,1896]" italics="true" pageId="26" pageNumber="193">G</emphasis>
) elongated strap-like branchiae, specimen NHMUK ANEA 2023.1201, scale bar is 100 µm; (
<emphasis id="5CA4DB35FFA9FF838752F8D1FCB9F839" box="[850,867,1902,1923]" italics="true" pageId="26" pageNumber="193">H</emphasis>
) chaetal types (crenulated capillaries and short acicular spines) of anterior parapodia, scale is 50 µm. Abbreviations: as, acicular spines; cc, crenulated capillaries.
</paragraph>
</caption>
<caption id="3AAF57AFFFA8FF828479F9BAFEFBF9EB" ID-DOI="http://doi.org/10.5281/zenodo.10414233" ID-Zenodo-Dep="10414233" httpUri="https://zenodo.org/record/10414233/files/figure.png" pageId="27" pageNumber="194" startId="27.[121,189,1541,1563]" targetBox="[125,1416,158,1529]" targetPageId="27" targetType="figure">
<paragraph id="6E6F0727FFA8FF828479F9BAFEFBF9EB" blockId="27.[121,1421,1541,1617]" pageId="27" pageNumber="194">
<emphasis id="5CA4DB35FFA8FF828479F9BAFF06F9A0" bold="true" box="[121,220,1541,1563]" pageId="27" pageNumber="194">Figure 19</emphasis>
. Phylogeny of the
<taxonomicName id="A9D07CA4FFA8FF8285A4F9BAFDD1F9A1" authorityName="Hartman" authorityYear="1942" box="[420,523,1541,1563]" class="Polychaeta" family="Orbiniidae" kingdom="Animalia" pageId="27" pageNumber="194" phylum="Annelida" rank="family">Orbiniidae</taxonomicName>
family based on Bayesian analysis of a combined dataset of the genes COI, 16S and 18S. Numbers adjacent to nodes indicate posterior probabilities, and taxa for which sequences have been contributed by the present study are indicated in bold.
</paragraph>
</caption>
<subSubSection id="26CA54ACFFA8FF858479F972FA46FF15" lastPageId="28" lastPageNumber="195" pageId="27" pageNumber="194" type="description">
<paragraph id="6E6F0727FFA8FF828479F972FA54F934" blockId="27.[121,749,1741,1971]" lastBlockId="27.[793,1423,1654,1971]" pageId="27" pageNumber="194">
<emphasis id="5CA4DB35FFA8FF828479F972FEDAF95F" bold="true" box="[121,256,1741,1765]" pageId="27" pageNumber="194">Description</emphasis>
. Best preserved specimen NHMUK ANEA 2022.431 complete, ~
<quantity id="A928AAC2FFA8FF828562F954FE45F8B8" box="[354,415,1771,1795]" metricMagnitude="-3" metricUnit="m" metricValue="9.0" pageId="27" pageNumber="194" unit="mm" value="9.0">9 mm</quantity>
long and
<quantity id="A928AAC2FFA8FF82860AF954FD81F8B8" box="[522,603,1771,1795]" metricMagnitude="-4" metricUnit="m" metricValue="7.0" pageId="27" pageNumber="194" unit="mm" value="0.7">0.7 mm</quantity>
wide for ~95 chaetigers. Specimen AM W.52198 anterior fragment with 15 chaetigers. Specimen AM W.52200 anterior end, with ~40 discernible chaetigers. Body somewhat dorsoventrally flattened throughout, not divided into distinct regions; individual chaetigers narrow, similar throughout; posterior parapodia not dorsally elevated (
<figureCitation id="F6EB1BA2FFA8FF8285D2F824FDEFF809" box="[466,565,1947,1971]" captionStart="Figure" captionStartId="28.[167,200,1928,1950]" captionTargetBox="[166,1466,669,1914]" captionTargetId="figure-146@28.[166,1466,669,1914]" captionTargetPageId="28" captionText="Figure 20. Orbiniella sp. specimen NHMUK.2022.431. (A) Preserved specimen in lateral view, scale bar is 1 mm; (B) branchiae from posterior segments, scale bar is 250 µm; (C) example of crenulated capillaries, scale bar is 25 µm; (D) example of spines, scale bar is 25 µm; (E) juveniles (NHMUK ANEA 2022.421430), scale bar is 500 µm." figureDoi="http://doi.org/10.5281/zenodo.10414235" httpUri="https://zenodo.org/record/10414235/files/figure.png" pageId="27" pageNumber="194">Fig. 20A</figureCitation>
). Live specimens not observed, ethanol-preserved specimens tanned (
<figureCitation id="F6EB1BA2FFA8FF828128F9C9FA59F934" box="[1320,1411,1654,1678]" captionStart="Figure" captionStartId="28.[167,200,1928,1950]" captionTargetBox="[166,1466,669,1914]" captionTargetId="figure-146@28.[166,1466,669,1914]" captionTargetPageId="28" captionText="Figure 20. Orbiniella sp. specimen NHMUK.2022.431. (A) Preserved specimen in lateral view, scale bar is 1 mm; (B) branchiae from posterior segments, scale bar is 250 µm; (C) example of crenulated capillaries, scale bar is 25 µm; (D) example of spines, scale bar is 25 µm; (E) juveniles (NHMUK ANEA 2022.421430), scale bar is 500 µm." figureDoi="http://doi.org/10.5281/zenodo.10414235" httpUri="https://zenodo.org/record/10414235/files/figure.png" pageId="27" pageNumber="194">Fig 20A</figureCitation>
).
</paragraph>
<paragraph id="6E6F0727FFA8FF828738F92CFC34F89A" blockId="27.[793,1423,1654,1971]" pageId="27" pageNumber="194">
Prostomium bluntly conical (
<figureCitation id="F6EB1BA2FFA8FF8280A5F92CFACDF911" box="[1189,1303,1683,1707]" captionStart="Figure" captionStartId="28.[167,200,1928,1950]" captionTargetBox="[166,1466,669,1914]" captionTargetId="figure-146@28.[166,1466,669,1914]" captionTargetPageId="28" captionText="Figure 20. Orbiniella sp. specimen NHMUK.2022.431. (A) Preserved specimen in lateral view, scale bar is 1 mm; (B) branchiae from posterior segments, scale bar is 250 µm; (C) example of crenulated capillaries, scale bar is 25 µm; (D) example of spines, scale bar is 25 µm; (E) juveniles (NHMUK ANEA 2022.421430), scale bar is 500 µm." figureDoi="http://doi.org/10.5281/zenodo.10414235" httpUri="https://zenodo.org/record/10414235/files/figure.png" pageId="27" pageNumber="194">Fig. 20B</figureCitation>
), without appendages, eyes absent. Nuchal organs only detected as lateral pits on prostomium. Peristomium approximately twice as long as prostomium, weakly annulated, but two achaetous rings likely present.
</paragraph>
<paragraph id="6E6F0727FFA8FF858738F899FD4FFF50" blockId="27.[793,1423,1654,1971]" lastBlockId="28.[166,795,151,527]" lastPageId="28" lastPageNumber="195" pageId="27" pageNumber="194">
Parapodia reduced to low mounds from which chaetae emerge; no neuropodial postchaetal lobes. Branchiae present; absent in anterior-most segments and becoming apparent after approximately 30 segments in adult specimens (
<figureCitation id="F6EB1BA2FFA8FF828162F8C1FC94F809" captionStart="Figure" captionStartId="28.[167,200,1928,1950]" captionTargetBox="[166,1466,669,1914]" captionTargetId="figure-146@28.[166,1466,669,1914]" captionTargetPageId="28" captionText="Figure 20. Orbiniella sp. specimen NHMUK.2022.431. (A) Preserved specimen in lateral view, scale bar is 1 mm; (B) branchiae from posterior segments, scale bar is 250 µm; (C) example of crenulated capillaries, scale bar is 25 µm; (D) example of spines, scale bar is 25 µm; (E) juveniles (NHMUK ANEA 2022.421430), scale bar is 500 µm." figureDoi="http://doi.org/10.5281/zenodo.10414235" httpUri="https://zenodo.org/record/10414235/files/figure.png" pageId="27" pageNumber="194">Fig. 20A</figureCitation>
). Branchiae initially small and conical, increasing greatly in length towards posterior where they become strap-like, slender and elongated (
<figureCitation id="F6EB1BA2FFAFFF8585DBFF0AFD9AFF77" box="[475,576,181,205]" captionStart="Figure" captionStartId="28.[167,200,1928,1950]" captionTargetBox="[166,1466,669,1914]" captionTargetId="figure-146@28.[166,1466,669,1914]" captionTargetPageId="28" captionText="Figure 20. Orbiniella sp. specimen NHMUK.2022.431. (A) Preserved specimen in lateral view, scale bar is 1 mm; (B) branchiae from posterior segments, scale bar is 250 µm; (C) example of crenulated capillaries, scale bar is 25 µm; (D) example of spines, scale bar is 25 µm; (E) juveniles (NHMUK ANEA 2022.421430), scale bar is 500 µm." figureDoi="http://doi.org/10.5281/zenodo.10414235" httpUri="https://zenodo.org/record/10414235/files/figure.png" pageId="28" pageNumber="195">Fig. 20C</figureCitation>
); greatly reduced in size again in the few posteriormost chaetigers.
</paragraph>
<paragraph id="6E6F0727FFAFFF8584C5FF50FCC1FDB5" blockId="28.[166,795,151,527]" pageId="28" pageNumber="195">
Chaetae include both crenulated capillaries (
<figureCitation id="F6EB1BA2FFAFFF8586AEFF50FCC9FEB2" box="[686,787,239,264]" captionStart="Figure" captionStartId="28.[167,200,1928,1950]" captionTargetBox="[166,1466,669,1914]" captionTargetId="figure-146@28.[166,1466,669,1914]" captionTargetPageId="28" captionText="Figure 20. Orbiniella sp. specimen NHMUK.2022.431. (A) Preserved specimen in lateral view, scale bar is 1 mm; (B) branchiae from posterior segments, scale bar is 250 µm; (C) example of crenulated capillaries, scale bar is 25 µm; (D) example of spines, scale bar is 25 µm; (E) juveniles (NHMUK ANEA 2022.421430), scale bar is 500 µm." figureDoi="http://doi.org/10.5281/zenodo.10414235" httpUri="https://zenodo.org/record/10414235/files/figure.png" pageId="28" pageNumber="195">Fig. 20D</figureCitation>
) and short acicular spines (
<figureCitation id="F6EB1BA2FFAFFF8585C6FEB2FDFDFE9F" box="[454,551,269,293]" captionStart="Figure" captionStartId="28.[167,200,1928,1950]" captionTargetBox="[166,1466,669,1914]" captionTargetId="figure-146@28.[166,1466,669,1914]" captionTargetPageId="28" captionText="Figure 20. Orbiniella sp. specimen NHMUK.2022.431. (A) Preserved specimen in lateral view, scale bar is 1 mm; (B) branchiae from posterior segments, scale bar is 250 µm; (C) example of crenulated capillaries, scale bar is 25 µm; (D) example of spines, scale bar is 25 µm; (E) juveniles (NHMUK ANEA 2022.421430), scale bar is 500 µm." figureDoi="http://doi.org/10.5281/zenodo.10414235" httpUri="https://zenodo.org/record/10414235/files/figure.png" pageId="28" pageNumber="195">Fig. 20E</figureCitation>
) in both rami; furcate setae absent; no evidence of imbedded aciculae. Notochaetae as bundles of crenulated capillaries of various lengths throughout; straight slightly serrated spines present from chaetiger 1 (up to 3 per ramus observed). Neurochaetae generally slenderer than notochaetae composed of crenulated capillaries and up to 3 spines; neuropodial spines slenderer than in notopodial one, distally slightly curved into slender tip. Pygidium with two broad lobes, anal cirri not observed.
</paragraph>
<paragraph id="6E6F0727FFAFFF8584A6FD90FA46FF15" blockId="28.[166,795,559,642]" lastBlockId="28.[839,1436,151,176]" pageId="28" pageNumber="195">
<emphasis id="5CA4DB35FFAFFF8584A6FD90FECDFDFD" bold="true" box="[166,279,559,583]" pageId="28" pageNumber="195">Variation</emphasis>
. Juveniles (
<figureCitation id="F6EB1BA2FFAFFF8585A7FD90FDD7FDF2" box="[423,525,559,584]" captionStart="Figure" captionStartId="28.[167,200,1928,1950]" captionTargetBox="[166,1466,669,1914]" captionTargetId="figure-146@28.[166,1466,669,1914]" captionTargetPageId="28" captionText="Figure 20. Orbiniella sp. specimen NHMUK.2022.431. (A) Preserved specimen in lateral view, scale bar is 1 mm; (B) branchiae from posterior segments, scale bar is 250 µm; (C) example of crenulated capillaries, scale bar is 25 µm; (D) example of spines, scale bar is 25 µm; (E) juveniles (NHMUK ANEA 2022.421430), scale bar is 500 µm." figureDoi="http://doi.org/10.5281/zenodo.10414235" httpUri="https://zenodo.org/record/10414235/files/figure.png" pageId="28" pageNumber="195">Fig. 20F</figureCitation>
) small specimens with length of
<quantity id="A928AAC2FFAFFF85850BFDF2FEACFDDE" box="[267,374,589,613]" metricMagnitude="-3" metricUnit="m" metricValue="2.6" metricValueMax="4.0" metricValueMin="1.2" pageId="28" pageNumber="195" unit="mm" value="2.6" valueMax="4.0" valueMin="1.2">1.24 mm</quantity>
and width of
<quantity id="A928AAC2FFAFFF858606FDF2FD52FDDE" box="[518,648,589,613]" metricMagnitude="-4" metricUnit="m" metricValue="1.5" metricValueMax="2.0" metricValueMin="1.0" pageId="28" pageNumber="195" unit="mm" value="0.15" valueMax="0.2" valueMin="0.1">0.10.2 mm</quantity>
, for 20 to ~50 chaetigers, branchiae always present, appearing ~chaetiger 10 regardless of size, parapodial lobes never developed.
</paragraph>
</subSubSection>
<subSubSection id="26CA54ACFFAFFF858747FF7DFA61FF4D" pageId="28" pageNumber="195" type="distribution">
<paragraph id="6E6F0727FFAFFF858747FF7DFA61FF4D" blockId="28.[839,1467,194,248]" pageId="28" pageNumber="195">
<emphasis id="5CA4DB35FFAFFF858747FF7DFC15FF60" bold="true" box="[839,975,194,218]" pageId="28" pageNumber="195">Distribution</emphasis>
. IN2017_V03, Station 100. Pilot whale carcass, off Byron Bay,
<collectingRegion id="AC14C9C5FFAFFF8587E7FF5FFB7FFF4D" box="[999,1189,223,247]" country="Australia" name="New South Wales" pageId="28" pageNumber="195">New South Wales</collectingRegion>
,
<collectingCountry id="16C747B7FFAFFF8580ADFF60FAD5FF4D" box="[1197,1295,223,247]" name="Australia" pageId="28" pageNumber="195">Australia</collectingCountry>
in
<quantity id="A928AAC2FFAFFF85812FFF5FFA6DFF4D" box="[1327,1463,224,248]" metricMagnitude="3" metricUnit="m" metricValue="1.0059999999999998" metricValueMax="1.013" metricValueMin="0.999" pageId="28" pageNumber="195" unit="m" value="1006.0" valueMax="1013.0" valueMin="999.0">9991013 m</quantity>
.
</paragraph>
</subSubSection>
<subSubSection id="26CA54ACFFAFFF848747FEB5FD33FE6F" lastPageId="29" lastPageNumber="196" pageId="28" pageNumber="195" type="discussion">
<paragraph id="6E6F0727FFAFFF848747FEB5FD33FE6F" blockId="28.[839,1468,266,642]" lastBlockId="29.[121,749,151,469]" lastPageId="29" lastPageNumber="196" pageId="28" pageNumber="195">
<emphasis id="5CA4DB35FFAFFF858747FEB5FC74FE98" bold="true" box="[839,942,266,290]" pageId="28" pageNumber="195">Remarks</emphasis>
. Specimens assigned here to
<taxonomicName id="A9D07CA4FFAFFF8580F2FEB5FA52FE98" box="[1266,1416,266,290]" class="Polychaeta" family="Orbiniidae" genus="Orbiniella" kingdom="Animalia" pageId="28" pageNumber="195" phylum="Annelida" rank="species" species="undetermined">
<emphasis id="5CA4DB35FFAFFF8580F2FEB5FABAFE98" box="[1266,1376,266,290]" italics="true" pageId="28" pageNumber="195">Orbiniella</emphasis>
sp.
</taxonomicName>
are morphologically similar to
<taxonomicName id="A9D07CA4FFAFFF85806FFE98FAF6FE85" authority="Georgieva &amp; Wiklund &amp; Ramos &amp; Neal &amp; Glasby &amp; Gunton, 2023" authorityName="Georgieva &amp; Wiklund &amp; Ramos &amp; Neal &amp; Glasby &amp; Gunton" authorityYear="2023" box="[1135,1324,295,319]" class="Polychaeta" family="Orbiniidae" genus="Orbiniella" kingdom="Animalia" pageId="28" pageNumber="195" phylum="Annelida" rank="species" species="jamesi" status="sp. nov.">
<emphasis id="5CA4DB35FFAFFF85806FFE98FAF6FE85" box="[1135,1324,295,319]" italics="true" pageId="28" pageNumber="195">Orbiniella jamesi</emphasis>
</taxonomicName>
<taxonomicNameLabel id="4797664EFFAFFF858135FE97FA56FE85" box="[1333,1420,296,319]" pageId="28" pageNumber="195" rank="species">sp. nov.</taxonomicNameLabel>
, but differ in the following characters: neuropodial postchaetal lobes are absent, body is more robust, posterior branchiae are shorter and thicker than in
<taxonomicName id="A9D07CA4FFAFFF8580B3FE3FFAFBFE2D" authority="Georgieva &amp; Wiklund &amp; Ramos &amp; Neal &amp; Glasby &amp; Gunton, 2023" authorityName="Georgieva &amp; Wiklund &amp; Ramos &amp; Neal &amp; Glasby &amp; Gunton" authorityYear="2023" box="[1203,1313,384,407]" class="Polychaeta" family="Orbiniidae" genus="Orbiniella" kingdom="Animalia" pageId="28" pageNumber="195" phylum="Annelida" rank="species" species="jamesi" status="sp. nov.">
<emphasis id="5CA4DB35FFAFFF8580B3FE3FFAFBFE2D" box="[1203,1313,384,407]" italics="true" pageId="28" pageNumber="195">O. jamesi</emphasis>
</taxonomicName>
<taxonomicNameLabel id="4797664EFFAFFF85812CFE3FFA5CFE2D" box="[1324,1414,384,407]" pageId="28" pageNumber="195" rank="species">sp. nov.</taxonomicNameLabel>
The development and number of neuropodial postchaetal lobes have been suggested to differ among developmental stages in
<taxonomicName id="A9D07CA4FFAFFF858766FE68FC06FE55" authorityName="Hartman" authorityYear="1942" box="[870,988,471,495]" class="Polychaeta" family="Orbiniidae" kingdom="Animalia" pageId="28" pageNumber="195" phylum="Annelida" rank="family">Orbiniidae</taxonomicName>
, but here the differences were observed in specimens of similar length (
<quantity id="A928AAC2FFAFFF85806FFE4AFB1DFDB7" box="[1135,1223,501,525]" metricMagnitude="-3" metricUnit="m" metricValue="8.0" metricValueMax="9.0" metricValueMin="7.0" pageId="28" pageNumber="195" unit="mm" value="8.0" valueMax="9.0" valueMin="7.0">79 mm</quantity>
) and possessing similar number of chaetigers (9095). A number of very small juveniles (
<figureCitation id="F6EB1BA2FFAFFF8587B1FD90FBD3FDF2" box="[945,1033,559,584]" captionStart="Figure" captionStartId="28.[167,200,1928,1950]" captionTargetBox="[166,1466,669,1914]" captionTargetId="figure-146@28.[166,1466,669,1914]" captionTargetPageId="28" captionText="Figure 20. Orbiniella sp. specimen NHMUK.2022.431. (A) Preserved specimen in lateral view, scale bar is 1 mm; (B) branchiae from posterior segments, scale bar is 250 µm; (C) example of crenulated capillaries, scale bar is 25 µm; (D) example of spines, scale bar is 25 µm; (E) juveniles (NHMUK ANEA 2022.421430), scale bar is 500 µm." figureDoi="http://doi.org/10.5281/zenodo.10414235" httpUri="https://zenodo.org/record/10414235/files/figure.png" pageId="28" pageNumber="195">Fig. 20F</figureCitation>
) were also found in the samples. However, the molecular results indicate that specimens assigned here to
<taxonomicName id="A9D07CA4FFAFFF858763FDD5FC22FD38" box="[867,1016,618,642]" class="Polychaeta" family="Orbiniidae" genus="Orbiniella" kingdom="Animalia" pageId="28" pageNumber="195" phylum="Annelida" rank="species" species="undetermined">
<emphasis id="5CA4DB35FFAFFF858763FDD5FC0BFD38" box="[867,977,618,642]" italics="true" pageId="28" pageNumber="195">Orbiniella</emphasis>
sp.
</taxonomicName>
and
<taxonomicName id="A9D07CA4FFAFFF85802DFDD5FB32FD38" authority="Georgieva &amp; Wiklund &amp; Ramos &amp; Neal &amp; Glasby &amp; Gunton, 2023" authorityName="Georgieva &amp; Wiklund &amp; Ramos &amp; Neal &amp; Glasby &amp; Gunton" authorityYear="2023" box="[1069,1256,618,642]" class="Polychaeta" family="Orbiniidae" genus="Orbiniella" kingdom="Animalia" pageId="28" pageNumber="195" phylum="Annelida" rank="species" species="jamesi" status="sp. nov.">
<emphasis id="5CA4DB35FFAFFF85802DFDD5FB32FD38" box="[1069,1256,618,642]" italics="true" pageId="28" pageNumber="195">Orbiniella jamesi</emphasis>
</taxonomicName>
<taxonomicNameLabel id="4797664EFFAFFF8580F0FDD4FA9CFD38" box="[1264,1350,619,642]" pageId="28" pageNumber="195" rank="species">sp. nov.</taxonomicNameLabel>
, as well as juvenile specimens represent the same species (
<figureCitation id="F6EB1BA2FFAEFF84868CFF28FD3AFF0A" box="[652,736,151,176]" captionStart="Figure 19" captionStartId="27.[121,189,1541,1563]" captionTargetBox="[125,1416,158,1529]" captionTargetId="figure-84@27.[121,1421,151,1530]" captionTargetPageId="27" captionText="Figure 19. Phylogeny of the Orbiniidae family based on Bayesian analysis of a combined dataset of the genes COI, 16S and 18S. Numbers adjacent to nodes indicate posterior probabilities, and taxa for which sequences have been contributed by the present study are indicated in bold." figureDoi="http://doi.org/10.5281/zenodo.10414233" httpUri="https://zenodo.org/record/10414233/files/figure.png" pageId="29" pageNumber="196">Fig. 19</figureCitation>
). Currently, the understanding of developmental stages in
<taxonomicName id="A9D07CA4FFAEFF848479FF6DFF37FF50" authorityName="Hartman" authorityYear="1942" box="[121,237,210,234]" class="Polychaeta" family="Orbiniidae" kingdom="Animalia" pageId="29" pageNumber="196" phylum="Annelida" rank="family">Orbiniidae</taxonomicName>
is limited despite some recent advances (see
<bibRefCitation id="0A417AD6FFAEFF848479FF50FF20FEB2" author="Blake, J. A." box="[121,250,239,264]" pageId="29" pageNumber="196" pagination="1 - 123" refId="ref23352" refString="Blake, J. A. 2021. New species and records of Orbiniidae (Annelida, Polychaeta) from continental shelf and slope depths of the Western North Atlantic Ocean. Zootaxa 4930 (1): 1 - 123. https: // doi. org / 10.11646 / zootaxa. 4930.1.1" type="journal article" year="2021">Blake, 2021</bibRefCitation>
) and we thus tentatively ascribe the specimens without neuropodial postchaetal lobes to
<taxonomicName id="A9D07CA4FFAEFF84864BFEB2FD3DFE9E" box="[587,743,269,293]" class="Polychaeta" family="Orbiniidae" genus="Orbiniella" kingdom="Animalia" pageId="29" pageNumber="196" phylum="Annelida" rank="species" species="undetermined">
<emphasis id="5CA4DB35FFAEFF84864BFEB2FD66FE9F" box="[587,700,269,293]" italics="true" pageId="29" pageNumber="196">Orbiniella</emphasis>
sp.
</taxonomicName>
, rather than
<taxonomicName id="A9D07CA4FFAEFF8484FFFE95FEA8FEF8" authority="Georgieva &amp; Wiklund &amp; Ramos &amp; Neal &amp; Glasby &amp; Gunton, 2023" authorityName="Georgieva &amp; Wiklund &amp; Ramos &amp; Neal &amp; Glasby &amp; Gunton" authorityYear="2023" box="[255,370,298,322]" class="Polychaeta" family="Orbiniidae" genus="Orbiniella" kingdom="Animalia" pageId="29" pageNumber="196" phylum="Annelida" rank="genus" status="sp. nov.">
<emphasis id="5CA4DB35FFAEFF8484FFFE95FEA8FEF8" box="[255,370,298,322]" italics="true" pageId="29" pageNumber="196">Orbiniella</emphasis>
</taxonomicName>
<taxonomicNameLabel id="4797664EFFAEFF84857CFE94FE0FFEF8" box="[380,469,299,322]" pageId="29" pageNumber="196" rank="species">sp. nov.</taxonomicNameLabel>
that has well-developed lobes.
<bibRefCitation id="0A417AD6FFAEFF8484C1FEF7FE40FEDA" author="Gunton, L. M. &amp; E. K. Kupriyanova &amp; T. Alvestad &amp; L. Avery &amp; J. A. Blake &amp; O. Biriukova &amp; M. Boggemann" box="[193,410,327,352]" pageId="29" pageNumber="196" pagination="1 - 198" refId="ref24949" refString="Gunton, L. M., E. K. Kupriyanova, T. Alvestad, L. Avery, J. A. Blake, O. Biriukova, M. Boggemann, et al. 2021. Annelids of the eastern Australian abyss collected by the 2017 RV &quot; Investigator &quot; voyage. ZooKeys 1020: 1 - 198." type="journal article" year="2021">
Gunton
<emphasis id="5CA4DB35FFAEFF848519FEF7FE8BFEE5" box="[281,337,327,351]" italics="true" pageId="29" pageNumber="196">et al.</emphasis>
(2021
</bibRefCitation>
, fig. 18F) assigned a specimen fitting
<taxonomicName id="A9D07CA4FFAEFF8484BDFEDAFEAEFEC7" authorityName="Georgieva &amp; Wiklund &amp; Ramos &amp; Neal &amp; Glasby &amp; Gunton" authorityYear="2023" box="[189,372,357,381]" class="Polychaeta" family="Orbiniidae" genus="Orbiniella" kingdom="Animalia" pageId="29" pageNumber="196" phylum="Annelida" rank="species" species="jamesi">
<emphasis id="5CA4DB35FFAEFF8484BDFEDAFEAEFEC7" box="[189,372,357,381]" italics="true" pageId="29" pageNumber="196">Orbiniella jamesi</emphasis>
</taxonomicName>
sp. as described here to an unknown genus of
<taxonomicName id="A9D07CA4FFAEFF8484D5FE3DFEB1FE20" authorityName="Hartman" authorityYear="1957" box="[213,363,386,410]" class="Polychaeta" family="Orbiniidae" kingdom="Animalia" pageId="29" pageNumber="196" phylum="Annelida" rank="subFamily" subFamily="Protoariciinae">Protoariciinae</taxonomicName>
, but this placement is at odds with the molecular phylogeny of this study which shows protoariciines in a more crown position compared to
<taxonomicName id="A9D07CA4FFAEFF848611FE02FDA5FE6F" authorityName="Georgieva &amp; Wiklund &amp; Ramos &amp; Neal &amp; Glasby &amp; Gunton" authorityYear="2023" box="[529,639,445,469]" class="Polychaeta" family="Orbiniidae" genus="Orbiniella" kingdom="Animalia" pageId="29" pageNumber="196" phylum="Annelida" rank="genus">
<emphasis id="5CA4DB35FFAEFF848611FE02FDA5FE6F" box="[529,639,445,469]" italics="true" pageId="29" pageNumber="196">Orbiniella</emphasis>
</taxonomicName>
(
<figureCitation id="F6EB1BA2FFAEFF84868EFE02FD06FE6F" box="[654,732,445,469]" captionStart="Figure 19" captionStartId="27.[121,189,1541,1563]" captionTargetBox="[125,1416,158,1529]" captionTargetId="figure-84@27.[121,1421,151,1530]" captionTargetPageId="27" captionText="Figure 19. Phylogeny of the Orbiniidae family based on Bayesian analysis of a combined dataset of the genes COI, 16S and 18S. Numbers adjacent to nodes indicate posterior probabilities, and taxa for which sequences have been contributed by the present study are indicated in bold." figureDoi="http://doi.org/10.5281/zenodo.10414233" httpUri="https://zenodo.org/record/10414233/files/figure.png" pageId="29" pageNumber="196">Fig. 19</figureCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>