treatments-xml/data/CC/5F/0A/CC5F0ABB15F6989E849383880CD39530.xml
2024-06-21 12:51:58 +02:00

159 lines
12 KiB
XML
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<document ID-DOI="http://dx.doi.org/10.3897/zookeys.707.13042" ID-GBIF-Dataset="77aa16c7-25ee-4130-a594-57ed6e914df1" ID-PMC="PMC5674146" ID-Pensoft-Pub="1313-2970-707-1" ID-PubMed="29118626" ID-ZBK="6A0BCD992749450C874B440D0C0A232C" ModsDocAuthor="" ModsDocDate="2017" ModsDocID="1313-2970-707-1" ModsDocOrigin="ZooKeys 707" ModsDocTitle="Abyssal fauna of the UK-1 polymetallic nodule exploration area, Clarion-Clipperton Zone, central Pacific Ocean: Mollusca" checkinTime="1507668034441" checkinUser="pensoft" docAuthor="Wiklund, Helena, Taylor, John D., Dahlgren, Thomas G., Todt, Christiane, Ikebe, Chiho, Rabone, Muriel &amp; Glover, Adrian G." docDate="2017" docId="CC5F0ABB15F6989E849383880CD39530" docLanguage="en" docName="ZooKeys 707: 1-46" docOrigin="ZooKeys 707" docSource="http://dx.doi.org/10.3897/zookeys.707.13042" docTitle="Ledella knudseni Taylor &amp; Wiklund, sp. n." docType="treatment" docUuid="66E692B5-7C61-4ADC-9539-EFC085424147" docUuidSource="ZooBank" docVersion="6" lastPageNumber="9" masterDocId="FFC7FFE8482EB03042654660FFF4EB7D" masterDocTitle="Abyssal fauna of the UK- 1 polymetallic nodule exploration area, Clarion-Clipperton Zone, central Pacific Ocean: Mollusca" masterLastPageNumber="46" masterPageNumber="1" pageNumber="8" updateTime="1668164910568" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Abyssal fauna of the UK- 1 polymetallic nodule exploration area, Clarion-Clipperton Zone, central Pacific Ocean: Mollusca</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Wiklund, Helena</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Taylor, John D.</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Dahlgren, Thomas G.</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Todt, Christiane</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Ikebe, Chiho</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Rabone, Muriel</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Glover, Adrian G.</mods:namePart>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>ZooKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2017</mods:date>
<mods:detail type="volume">
<mods:number>707</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>1</mods:start>
<mods:end>46</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.707.13042</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.707.13042</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-707-1</mods:identifier>
<mods:identifier type="ZBK">6A0BCD992749450C874B440D0C0A232C</mods:identifier>
<mods:identifier type="ZooBank">6A0BCD992749450C874B440D0C0A232C</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="135489988" LSID="urn:lsid:zoobank.org:act:66E692B5-7C61-4ADC-9539-EFC085424147" httpUri="http://treatment.plazi.org/id/CC5F0ABB15F6989E849383880CD39530" lastPageId="8" lastPageNumber="9" pageId="7" pageNumber="8">
<subSubSection pageId="7" pageNumber="8" type="nomenclature">
<paragraph pageId="7" pageNumber="8">
<taxonomicName LSID="http://zoobank.org/66E692B5-7C61-4ADC-9539-EFC085424147" authority="Taylor &amp; Wiklund" class="Bivalvia" family="Nuculanidae" genus="Ledella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ledella knudseni" order="Pholadomyoida" pageId="7" pageNumber="8" phylum="Mollusca" rank="species" species="knudseni">Ledella knudseni Taylor &amp; Wiklund</taxonomicName>
<taxonomicNameLabel pageId="7" pageNumber="8">sp. n.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection pageId="7" pageNumber="8" type="materials_examined">
<paragraph pageId="7" pageNumber="8">Material examined.</paragraph>
<paragraph pageId="7" pageNumber="8">Paratype NHM_288A NHMUK 20170047.1-2, collected 2013-10-17, 13.75583 -116.48667, 4076 m. http://data.nhm.ac.uk/object/8aec47f4-dcec-4668-8398-9e4b0c28ecb8</paragraph>
<paragraph pageId="7" pageNumber="8">Holotype NHM_288C NHMUK 20170048, collected 2013-10-17, 13.75583 -116.48667, 4076 m. http://data.nhm.ac.uk/object/f1886d78-22bf-403e-bdb2-784b91c0eb12</paragraph>
</subSubSection>
<subSubSection lastPageId="8" lastPageNumber="9" pageId="7" pageNumber="8" type="description">
<paragraph pageId="7" pageNumber="8">Description.</paragraph>
<paragraph lastPageId="8" lastPageNumber="9" pageId="7" pageNumber="8">
Shell relatively thick, robust. Ovoid with short rostrum, umbones broad, prominent; postero ventral margin sinuous; broad, shallow sulcus extending from umbones to posteroventral margin. Sculpture of low, relatively broad, closely
<pageBreakToken pageId="8" pageNumber="9" start="start">spaced</pageBreakToken>
, commarginal lamellae; fine radial striations on rostrum and juvenile shell. Ligament internal, situated on broad resilium beneath umbones. Hinge robust, with 8-9 chevron shaped, blunt teeth to either side of ligament. Inner shell margin smooth. Prodissoconch large, ellipsoidal 0.3 mm long, with sharp rim, surface irregularly pitted. Holotype NHM_288C shell length 2.2 mm, width 1.5 mm; paratype NHM_288A shell length 2.1 mm, height 1.5 mm. (Figure 7).
</paragraph>
<caption pageId="8" pageNumber="9">
<paragraph pageId="8" pageNumber="9">
Figure 7.
<taxonomicName class="Bivalvia" family="Nuculanidae" genus="Ledella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ledella knudseni" order="Nuculanida" pageId="8" pageNumber="9" phylum="Mollusca" rank="species" species="knudseni">Ledella knudseni</taxonomicName>
sp. n. A Holotype, specimen NHM_288c B Paratype, specimen NHM_288a C Specimen NHM 288a dissected prior to DNA sequencing and SEM
<normalizedToken originalValue="DG">D-G</normalizedToken>
SEM of valve, hinge teeth and protoconch. Scale bars: 1 mm (
<normalizedToken originalValue="BC">B-C</normalizedToken>
); 0.5 mm (
<normalizedToken originalValue="DE">D-E</normalizedToken>
); 0.1 mm (
<normalizedToken originalValue="FG">F-G</normalizedToken>
). Image attribution Glover, Taylor, Dahlgren &amp; Wiklund, 2017.
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="8" pageNumber="9" type="genetic data">
<paragraph pageId="8" pageNumber="9">Genetic data.</paragraph>
<paragraph pageId="8" pageNumber="9">GenBank NHM_288A COI-MF157515; NHM_288C 18S-MF157491, COI-MF157516.</paragraph>
</subSubSection>
<subSubSection pageId="8" pageNumber="9" type="remarks">
<paragraph pageId="8" pageNumber="9">Remarks.</paragraph>
<paragraph pageId="8" pageNumber="9">
Similar in form to
<taxonomicName class="Bivalvia" family="Nuculanidae" genus="Ledella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ledella ultima" order="Nuculanida" pageId="8" pageNumber="9" phylum="Mollusca" rank="species" species="ultima">Ledella ultima</taxonomicName>
(Smith, 1885) widespread in the abyssal Atlantic (
<bibRefCitation author="Allen, JA" journalOrPublisher="Malacologia" pageId="29" pageNumber="30" pagination="57 - 103" title="Bivalvia of the deep Atlantic." url="https://doi.org/10.4002/0076-2997-50.1.57" volume="50" year="2008">Allen 2008</bibRefCitation>
), but has a less massive hinge with more teeth, 8-9 compared with 6-8 in
<taxonomicName lsidName="L. ultima" pageId="8" pageNumber="9" rank="species" species="ultima">L. ultima</taxonomicName>
. Also similar is the species identified by
<bibRefCitation author="Knudsen, J" journalOrPublisher="Galathea Reports" pageId="30" pageNumber="31" pagination="1 - 241" title="The systematics and biology of abyssal and hadal Bivalvia." volume="11" year="1970">Knudsen (1970)</bibRefCitation>
as
<taxonomicName lsidName="L. ultima" pageId="8" pageNumber="9" rank="species" species="ultima">L. ultima</taxonomicName>
from the Sunda Trench in Indian Ocean at 3810 m. The only species recorded from the deep eastern Pacific is
<taxonomicName class="Bivalvia" family="Nuculanidae" genus="Ledella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ledella dicella" order="Nuculanida" pageId="8" pageNumber="9" phylum="Mollusca" rank="species" species="dicella">Ledella dicella</taxonomicName>
(Dall, 1908) from 734-1200 m off Ecuador but this lacks the short rostrum and has 12-13 hinge teeth on each side of the ligament (
<bibRefCitation author="Coan, EV" journalOrPublisher="Santa Barbara Museum of Natural History Monographs" pageId="29" pageNumber="30" pagination="1 - 1258" title="Bivalve seashells of tropical west America: Marine bivalves from Baja California to northern Peru." volume="6" year="2012">Coan and Valentich-Scott 2012</bibRefCitation>
pl. 26). No genetic matches on GenBank.
<taxonomicName class="Bivalvia" family="Nuculanidae" genus="Ledella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ledella knudseni" order="Nuculanida" pageId="8" pageNumber="9" phylum="Mollusca" rank="species" species="knudseni">Ledella knudseni</taxonomicName>
groups in a small subclade with but is distinct from the Atlantic species
<taxonomicName lsidName="L. ultima" pageId="8" pageNumber="9" rank="species" species="ultima">L. ultima</taxonomicName>
and
<taxonomicName class="Bivalvia" family="Nuculanidae" genus="Ledella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ledella jamesi" order="Nuculanida" pageId="8" pageNumber="9" phylum="Mollusca" rank="species" species="jamesi">Ledella jamesi</taxonomicName>
Allen &amp; Hannah, 1989, as well as another
<taxonomicName class="Bivalvia" family="Nuculanidae" genus="Ledella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ledella" order="Nuculanida" pageId="8" pageNumber="9" phylum="Mollusca" rank="genus">Ledella</taxonomicName>
species from this study in the Pacific,
<taxonomicName class="Bivalvia" family="Nuculanidae" genus="Ledella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ledella" order="Nuculanida" pageId="8" pageNumber="9" phylum="Mollusca" rank="genus">Ledella</taxonomicName>
sp. (NHM_381) (Figure 12). The new species can be confused with juveniles of
<taxonomicName lsidName="B. calcar" pageId="8" pageNumber="9" rank="species" species="calcar">B. calcar</taxonomicName>
(see above), but shell is less shiny and iridescent, and ribs are more pronounced. DNA may be required to confirm identification.
</paragraph>
</subSubSection>
<subSubSection pageId="8" pageNumber="9" type="etymology">
<paragraph pageId="8" pageNumber="9">Etymology.</paragraph>
<paragraph pageId="8" pageNumber="9">
Named for
<normalizedToken originalValue="Jørgen">Jorgen</normalizedToken>
Knudsen (1918-2009), deep-sea bivalve systematist and author of the Galathea Report on abyssal and hadal
<taxonomicName class="Bivalvia" lsidName="Protobranchia" pageId="8" pageNumber="9" rank="class">Bivalvia</taxonomicName>
.
</paragraph>
</subSubSection>
<subSubSection pageId="8" pageNumber="9" type="ecology">
<paragraph pageId="8" pageNumber="9">Ecology.</paragraph>
<paragraph pageId="8" pageNumber="9">Found in polymetallic nodule province.</paragraph>
</subSubSection>
</treatment>
</document>