treatments-xml/data/1F/11/EE/1F11EE49079F1762CDA09D5E97696639.xml

<document ID-DOI="http://dx.doi.org/10.3897/zookeys.827.31365" ID-GBIF-Dataset="85f74389-c078-44de-b0bd-8b7e4c3b9404" ID-PMC="PMC6472301" ID-Pensoft-Pub="1313-2970-827-31" ID-PubMed="31114425" ID-ZBK="10B663895E424E5287D8F49E2405D651" ModsDocAuthor="" ModsDocDate="2019" ModsDocID="1313-2970-827-31" ModsDocOrigin="ZooKeys 827" ModsDocTitle="Mollusc species from the Pontocaspian region – an expert opinion list" checkinTime="1551875342560" checkinUser="pensoft" docAuthor="Wesselingh, Frank, Poorten, Jan Johan ter, Kijashko, Pavel, Albrecht, Christian, Anistratenko, Olga Yu, Frolov, Pavel, Gándara, Alberto Martinez, Gittenberger, Arjan, Gogaladze, Aleksandre, Mikhail Karpinsky, Popa, Luis, Sands, Arthur F, Vandendorpe, Justine &amp; Wilke, Thomas" docDate="2019" docId="1F11EE49079F1762CDA09D5E97696639" docLanguage="en" docName="ZooKeys 827: 31-124" docOrigin="ZooKeys 827" docSource="http://dx.doi.org/10.3897/zookeys.827.31365" docTitle="Didacna eichwaldi" docType="treatment" docVersion="5" lastPageNumber="42" masterDocId="FFA2FA62FFEC4705FFBBFB79FFAAFFFE" masterDocTitle="Mollusc species from the Pontocaspian region - an expert opinion list" masterLastPageNumber="124" masterPageNumber="31" pageNumber="41" updateTime="1668166983143" updateUser="ExternalLinkService">
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<mods:title>Mollusc species from the Pontocaspian region - an expert opinion list</mods:title>
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Wesselingh, Frank</mods:namePart>
<mods:affiliation>Naturalis Biodiversity Center, Leiden, Netherlands</mods:affiliation>
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Poorten, Jan Johan ter</mods:namePart>
<mods:affiliation>Field Museum of Natural History, Chicago, United States of America</mods:affiliation>
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Kijashko, Pavel</mods:namePart>
<mods:affiliation>Moscow State University, Moscow, Russia</mods:affiliation>
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Albrecht, Christian</mods:namePart>
<mods:affiliation>Justus Liebig University, Giessen, Germany</mods:affiliation>
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Anistratenko, Olga Yu</mods:namePart>
<mods:affiliation>Schmalhausen Instite of Zoology, National Academy of Sciences of Ukraine, Kiev, Ukraine &amp; Institute of Geological Sciences, National Academy of Sciences of Ukraine, KievUkraine</mods:affiliation>
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Frolov, Pavel</mods:namePart>
<mods:affiliation>Saint-Petersburg State University, Saint Petersburg, Russia</mods:affiliation>
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Gándara, Alberto Martinez</mods:namePart>
<mods:affiliation>Grigore Artipa National Museum of Natural History, Bucharest, Romania</mods:affiliation>
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Gittenberger, Arjan</mods:namePart>
<mods:affiliation>Gittenberger Marine Research, Inventory &amp; Strategy, Leiden, Netherlands</mods:affiliation>
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Gogaladze, Aleksandre</mods:namePart>
<mods:affiliation>Naturalis Biodiversity Center, Leiden, Netherlands</mods:affiliation>
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<mods:namePart>Mikhail Karpinsky</mods:namePart>
<mods:affiliation>Russian Federal Research Institute of Fisheries and Oceanography, Moscow, Russia</mods:affiliation>
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Popa, Luis</mods:namePart>
<mods:affiliation>Grigore Antirpa National Museum of Natural History, Bucharest, Romania</mods:affiliation>
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<mods:namePart>Sands, Arthur F</mods:namePart>
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<mods:namePart>Vandendorpe, Justine</mods:namePart>
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<mods:namePart>Wilke, Thomas</mods:namePart>
<mods:affiliation>Justus Liebig University Giessen Germany</mods:affiliation>
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<mods:date>2019</mods:date>
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<treatment ID-GBIF-Taxon="183410570" LSID="urn:lsid:plazi:treatment:1F11EE49079F1762CDA09D5E97696639" httpUri="http://treatment.plazi.org/id/1F11EE49079F1762CDA09D5E97696639" lastPageNumber="42" pageNumber="41">
<subSubSection type="nomenclature">
<paragraph pageId="10" pageNumber="41">
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Didacna" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Didacna eichwaldi" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="species" species="eichwaldi">Didacna eichwaldi</taxonomicName>
(Krynicki, 1837)
</paragraph>
</subSubSection>
<subSubSection type="description">
<paragraph pageId="10" pageNumber="41">Fig. 3b</paragraph>
</subSubSection>
<subSubSection type="reference_group">
<paragraph pageId="10" pageNumber="41">
°1829 C. [ardium] crassum Eichwald: 283 [non 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Cardium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cardium crassum" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="species" species="crassum">Cardium crassum</taxonomicName>
Gmelin, 1791].
</paragraph>
<paragraph pageId="10" pageNumber="41">
*1837 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Cardium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cardium Eichwaldi" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="species" species="Eichwaldi">Cardium Eichwaldi</taxonomicName>
Krynicki: 61 [nom. nov. pro 
<taxonomicName lsidName="C. crassum" pageId="10" pageNumber="41" rank="species" species="crassum">C. crassum</taxonomicName>
Eichwald, 1829, non Gmelin, 1791].
</paragraph>
<paragraph pageId="10" pageNumber="41">
1841 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Didacna" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Didacna crassa" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="species" species="crassa">Didacna crassa</taxonomicName>
. - Eichwald: 273, pl. 39, fig. 6a, b.
</paragraph>
<paragraph pageId="10" pageNumber="41">
1876 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Cardium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cardium crassum" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="species" species="crassum">Cardium crassum</taxonomicName>
Eichwald, 1829. - Grimm: 136-138, pl. 6, fig. 3.
</paragraph>
<paragraph pageId="10" pageNumber="41">
1905 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Didacna" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Didacna crassa" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="species" species="crassa">Didacna crassa</taxonomicName>
(Eichwald, 1829). - Ostroumov: 15, 69, pl. 2(A).
</paragraph>
<paragraph pageId="10" pageNumber="41">
1932 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Didacna" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Didacna crassa" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="species" species="crassa">Didacna aff. crassa</taxonomicName>
(Eichwald, 1829). - Bogachev: 27, pl. 2, figs 11-14.
</paragraph>
<paragraph pageId="10" pageNumber="41">
1952 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Didacna" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Didacna crassa" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="species" species="crassa">Didacna crassa</taxonomicName>
Eichwald, 1841. - Zhadin: 349, fig. 325.
</paragraph>
<paragraph pageId="10" pageNumber="41">
1953 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Didacna" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Didacna crassa" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="species" species="crassa">Didacna crassa</taxonomicName>
(Eichwald, 1829). - Fedorov: 130, pl. 20, figs 8, 9, 12, 13.
</paragraph>
<paragraph pageId="10" pageNumber="41">
1958 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Didacna" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Didacna crassa" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="subspecies" species="crassa" subspecies="crassa">Didacna crassa crassa</taxonomicName>
Eichwald, 1829. - Nevesskaja: 39-40, pl. 7, figs 8, 9.
</paragraph>
<paragraph pageId="10" pageNumber="41">
1969 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Didacna" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Didacna crassa" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="species" species="crassa">Didacna crassa</taxonomicName>
(Eichwald, 1829). - Vekilov: 134-139, pl. 24, figs 1-6, pl. 27, figs 1, 2.
</paragraph>
<paragraph pageId="10" pageNumber="41">
1988 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Didacna" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Didacna crassa" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="subspecies" species="crassa" subspecies="crassa">Didacna crassa crassa</taxonomicName>
(Eichwald, 1829). - Yanina and Svitoch: pl. 12, figs 8, 9, pl. 13, figs 1-5.
</paragraph>
<paragraph pageId="10" pageNumber="41">
2005 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Didacna" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Didacna crassa" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="species" species="crassa">Didacna crassa</taxonomicName>
(Eichwald, 1829). - Yanina: 242, pl. 14, figs 3-6.
</paragraph>
<paragraph pageId="10" pageNumber="41">
2007 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Didacna" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Didacna crassa" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="species" species="crassa">Didacna crassa</taxonomicName>
(Eichwald, 1829). - Nevesskaja: 939-940, pl. 23, figs 1-5.
</paragraph>
<paragraph pageId="10" pageNumber="41">
2013 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Didacna" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Didacna baeri" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="species" species="baeri">Didacna baeri</taxonomicName>
(Grimm, 1877). - Kijashko in Bogutskaya et al.: 352 [pars, non fig. 136, photo 41, non 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Cardium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cardium baeri" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="species" species="baeri">Cardium baeri</taxonomicName>
Grimm, 1877].
</paragraph>
<paragraph pageId="10" pageNumber="41">
2016 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Didacna" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Didacna baeri" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="species" species="baeri">Didacna baeri</taxonomicName>
(Grimm, 1877). - Vinarski and Kantor: 71 [pars, non Grimm, 1877].
</paragraph>
</subSubSection>
<subSubSection type="discussion">
<paragraph pageId="10" pageNumber="41">Status. Pontocaspian species, endemic to Caspian Sea.</paragraph>
</subSubSection>
<subSubSection type="distribution">
<paragraph pageId="10" pageNumber="41">
Type locality. &quot;Caspium mare&quot; (Caspian Sea) (for 
<taxonomicName lsidName="C. crassum" pageId="10" pageNumber="41" rank="species" species="crassum">C. crassum</taxonomicName>
Eichwald, 1829).
</paragraph>
<paragraph pageId="10" pageNumber="41">
Distribution. Caspian Sea. 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Didacna" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Didacna eichwaldi" order="Cardiida" pageId="10" pageNumber="41" phylum="Mollusca" rank="species" species="eichwaldi">Didacna eichwaldi</taxonomicName>
is known from the middle and southern Caspian Sea basins down to 35 m water depth and cannot tolerate lowered salinities.
</paragraph>
</subSubSection>
<subSubSection type="discussion">
<paragraph pageId="11" pageNumber="42">
<pageBreakToken pageId="11" pageNumber="42" start="start">Taxonomic</pageBreakToken>
notes. In recent works (
<bibRefCitation pageId="11" pageNumber="42">Kijashko in Bogutskaya et al. 2013</bibRefCitation>
), the species 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Didacna" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Didacna crassa" order="Cardiida" pageId="11" pageNumber="42" phylum="Mollusca" rank="species" species="crassa">Didacna crassa</taxonomicName>
(Eichwald, 1829) [= 
<taxonomicName lsidName="D. eichwaldi" pageId="11" pageNumber="42" rank="species" species="eichwaldi">D. eichwaldi</taxonomicName>
(Krynicki, 1837)] has been considered a synonym of 
<taxonomicName lsidName="D. baeri" pageId="11" pageNumber="42" rank="species" species="baeri">D. baeri</taxonomicName>
. However, we see morphological discontinuities in our extensive material from the northern Caspian Sea Basin that implies that 
<taxonomicName lsidName="D. eichwaldi" pageId="11" pageNumber="42" rank="species" species="eichwaldi">D. eichwaldi</taxonomicName>
with its protruding umbo and shouldered appearance is distinct from 
<taxonomicName lsidName="D. baeri" pageId="11" pageNumber="42" rank="species" species="baeri">D. baeri</taxonomicName>
that is characterised by a rounded umbo (see discussion above under 
<taxonomicName lsidName="D. baeri" pageId="11" pageNumber="42" rank="species" species="baeri">D. baeri</taxonomicName>
). Despite being in common usage, the name 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Didacna" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Didacna crassa" order="Cardiida" pageId="11" pageNumber="42" phylum="Mollusca" rank="species" species="crassa">Didacna crassa</taxonomicName>
is invalid as it is a junior homonym of 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Cardium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cardium crassum" order="Cardiida" pageId="11" pageNumber="42" phylum="Mollusca" rank="species" species="crassum">Cardium crassum</taxonomicName>
Gmelin, 1791; 
<bibRefCitation author="Krynicki, AJ" journalOrPublisher="Bulletin de la Societe Imperiale des Naturalistes de Moscou" pageId="77" pageNumber="108" pagination="50 - 64" title="Conchylia tam terrestria, quam fluviatilia et e maribus adjacentibus Imperii Rossici indigena, quae pro mutua offeruntur historiae naturalis cultoribus commutatione." url="https://biodiversitylibrary.org/page/5521585" volume="10" year="1837">Krynicki (1837)</bibRefCitation>
introduced 
<taxonomicName class="Bivalvia" family="Cardiidae" genus="Cardium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cardium eichwaldi" order="Cardiida" pageId="11" pageNumber="42" phylum="Mollusca" rank="species" species="eichwaldi">Cardium eichwaldi</taxonomicName>
as replacement name.
</paragraph>
</subSubSection>
<subSubSection type="conservation">
<paragraph pageId="11" pageNumber="42">Conservation status. Not assessed.</paragraph>
</subSubSection>
</treatment>
</document>