125 lines
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125 lines
13 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.197.1728" ID-GBIF-Dataset="42b66d62-b295-44c0-9368-cf4154fddc3b" ID-PMC="PMC3376724" ID-Pensoft-Pub="1313-2970-197-1" ID-PubMed="22711992" ModsDocAuthor="" ModsDocDate="2012" ModsDocID="1313-2970-197-1" ModsDocOrigin="ZooKeys 197" ModsDocTitle="Opisthobranchs from the western Indian Ocean, with descriptions of two new species and ten new records (Mollusca, Gastropoda)" checkinTime="1451248993568" checkinUser="pensoft" docAuthor="Yonow, Nathalie" docDate="2012" docId="C3BDAF437C88665AAED91DB8AA4461A5" docLanguage="en" docName="ZooKeys 197: 1-129" docOrigin="ZooKeys 197" docSource="http://dx.doi.org/10.3897/zookeys.197.1728" docTitle="Stylocheilus longicauda Quoy & Gaimard 1824" docType="treatment" docVersion="3" lastPageNumber="11" masterDocId="FFC4DD6FFFA0AE7CFF89A90FFFBCF766" masterDocTitle="Opisthobranchs from the western Indian Ocean, with descriptions of two new species and ten new records (Mollusca, Gastropoda)" masterLastPageNumber="130" masterPageNumber="1" pageNumber="10" updateTime="1668153941066" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>Opisthobranchs from the western Indian Ocean, with descriptions of two new species and ten new records (Mollusca, Gastropoda)</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Yonow, Nathalie</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>ZooKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2012</mods:date>
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<mods:detail type="volume">
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<mods:number>197</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>1</mods:start>
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<mods:end>130</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zookeys.197.1728</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.197.1728</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-197-1</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="152035759" LSID="urn:lsid:plazi:treatment:C3BDAF437C88665AAED91DB8AA4461A5" httpUri="http://treatment.plazi.org/id/C3BDAF437C88665AAED91DB8AA4461A5" lastPageId="10" lastPageNumber="11" pageId="9" pageNumber="10">
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<subSubSection pageId="9" pageNumber="10" type="nomenclature">
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<paragraph pageId="9" pageNumber="10">
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<taxonomicName LSID="http://species-id.net/wiki/Stylocheilus_longicauda" authority="Quoy & Gaimard, 1824" authorityName="Quoy & Gaimard" authorityYear="1824" class="Gastropoda" family="Aplysiidae" genus="Stylocheilus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stylocheilus longicauda" order="Aplysiida" pageId="9" pageNumber="10" phylum="Mollusca" rank="species" species="longicauda">Stylocheilus longicauda (Quoy & Gaimard, 1824)</taxonomicName>
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Plate 13
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</paragraph>
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</subSubSection>
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<subSubSection pageId="9" pageNumber="10" type="reference_group">
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<paragraph pageId="9" pageNumber="10">
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<taxonomicName class="Gastropoda" family="Aplysiidae" genus="Aplysia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Aplysia longicauda" order="Aplysiida" pageId="9" pageNumber="10" phylum="Mollusca" rank="species" species="longicauda">Aplysia longicauda</taxonomicName>
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Quoy & Gaimard, 1824: 421, pl 66 Fig. 8 (New Guinea); Rang 1828: 73, pl. 22 figs 8 - 10 (Quoy & Gaimard specimen, on
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<normalizedToken originalValue="“fucus”">"fucus"</normalizedToken>
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).
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</paragraph>
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<paragraph pageId="9" pageNumber="10">
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<taxonomicName class="Gastropoda" family="Aplysiidae" genus="Aplysia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Aplysia citrina" order="Aplysiida" pageId="9" pageNumber="10" phylum="Mollusca" rank="species" species="citrina">Aplysia citrina</taxonomicName>
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Rang, 1828: 71, pl. 22 figs. 1, 2 (Atlantic Ocean on
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<taxonomicName class="Phaeophyceae" family="Sargassaceae" genus="Sargassum" higherTaxonomySource="CoL" kingdom="Chromista" lsidName="Sargassum" order="Fucales" pageId="9" pageNumber="10" phylum="Ochrophyta" rank="genus">Sargassum</taxonomicName>
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).
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</paragraph>
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<paragraph pageId="9" pageNumber="10">
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<taxonomicName class="Gastropoda" family="Aplysiidae" genus="Aplysia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Aplysia nudata" order="Aplysiida" pageId="9" pageNumber="10" phylum="Mollusca" rank="species" species="nudata">Aplysia nudata</taxonomicName>
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Rang, 1828: 72, pl. 22 figs. 3-5 (Sandwich Islands on
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<normalizedToken originalValue="“fucus”">"fucus"</normalizedToken>
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).
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</paragraph>
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<paragraph pageId="9" pageNumber="10">
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<taxonomicName class="Gastropoda" family="Aplysiidae" genus="Aplysia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Aplysia striata" order="Aplysiida" pageId="9" pageNumber="10" phylum="Mollusca" rank="species" species="striata">Aplysia striata</taxonomicName>
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Quoy & Gaimard, 1832: 315 (New Guinea).
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</paragraph>
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<paragraph pageId="9" pageNumber="10">
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<taxonomicName class="Gastropoda" family="Aplysiidae" genus="Stylocheilus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stylocheilus longicauda" order="Aplysiida" pageId="9" pageNumber="10" phylum="Mollusca" rank="species" species="longicauda">Stylocheilus longicauda</taxonomicName>
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. -
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<bibRefCitation author="Bebbington, A" journalOrPublisher="Zoological Journal Linnean Society" pageId="64" pageNumber="65" pagination="63 - 99" title="Aplysiid species from East Africa with notes on the Indian Ocean Aplysiomorpha (Gastropoda: Opisthobranchia)." url="10.1111/j.1096-3642.1974.tb00793.x" volume="54" year="1974">Bebbington 1974</bibRefCitation>
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: 87, figs. 7G, 14, 15 (Kenya and Zanzibar);
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<bibRefCitation author="Gosliner, TM" journalOrPublisher="A guide to Opisthobranch molluscs of Southern Africa. EJ Brill, Leiden, Netherlands" pageId="65" pageNumber="66" title="Nudibranchs of Southern Africa." year="1987">Gosliner 1987</bibRefCitation>
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: 49, fig. 30 (South Africa);
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<bibRefCitation author="Yonow, N" journalOrPublisher="Revue francaise d'aquariologie herpetologie" pageId="67" pageNumber="68" pagination="1 - 30" title="Opisthobranches de l'lle Maurice, avec la description de deux especes nouvelles (Mollusca: Opisthobranchia)." volume="18" year="1991">Yonow and Hayward 1991</bibRefCitation>
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: 5, fig. 3E (Mauritius);
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<bibRefCitation author="Yonow, N" journalOrPublisher="Pensoft Publishers, Sofia-Moscow" pageId="67" pageNumber="68" title="Sea Slugs of the Red Sea." year="2008">Yonow 2008</bibRefCitation>
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: 104 (Red Sea).
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</paragraph>
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<paragraph pageId="9" pageNumber="10">
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<taxonomicName class="Gastropoda" family="Aplysiidae" genus="Stylocheilus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stylocheilus striatus" order="Aplysiida" pageId="9" pageNumber="10" phylum="Mollusca" rank="species" species="striatus">Stylocheilus striatus</taxonomicName>
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. -
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<bibRefCitation author="Yonow, N" journalOrPublisher="Pensoft Publishers, Sofia-Moscow" pageId="67" pageNumber="68" title="Sea Slugs of the Red Sea." year="2008">Yonow 2008</bibRefCitation>
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: 108 (Red Sea);
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<bibRefCitation author="Apte, D" journalOrPublisher="Journal Bombay Natural History Society" pageId="64" pageNumber="65" pagination="162 - 175" title="Opisthobranch fauna of Lakshadweep Islands, India, with 52 new records to Lakshadweep and 40 new records to India: part 1." volume="106" year="2009">Apte 2009</bibRefCitation>
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: 167, fig. 1k (Laccadive Islands);
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<bibRefCitation author="Richmond, MD" journalOrPublisher="Sida / SAREC-UDSM, Sweden" pageId="66" pageNumber="67" title="A Field Guide to the Seashores of Eastern Africa and the Western Indian Ocean Islands, 3 rd edition." year="2011">Richmond 2011</bibRefCitation>
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: 278 (East Africa).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="9" pageNumber="10" type="material">
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<paragraph pageId="9" pageNumber="10">Material.</paragraph>
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<paragraph pageId="9" pageNumber="10">
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Maldives: 6 mm in length pres., 2 m depth on algal-covered stone, Kuredu, Lhaviyani Atoll, 10-24 March 1998, leg. J Hinterkircher; three specimens collected of many, 50-70 mm live lengths (28-32 mm preserved), on algae growing on floating grouper cage near surface, Kiadhu Tila, Felidhoo Atoll, 23 July 1994, leg. RC Anderson (striations still visible on preserved specimens). - Zanzibar: numerous specimens 10-50 mm pres. lengths, Mazzini, intertidal and low water forming chains on sand and rocks in sea grass beds, 09 September 1993, leg. MD Richmond (numerous villi, very long rhinophores and oral tentacles). - Mauritius, La
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<normalizedToken originalValue="Réunion">Reunion</normalizedToken>
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, Mayotte, and Madagascar: photographs of numerous individuals http://seaslugs.free.fr/nudibranche/a_intro.htm. - Oman: Muscat, 01-12 April 2009, photos of several individuals, S Kahlbrock.
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="10" lastPageNumber="11" pageId="9" pageNumber="10" type="description">
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<paragraph pageId="9" pageNumber="10">Description/Distribution.</paragraph>
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<paragraph lastPageId="10" lastPageNumber="11" pageId="9" pageNumber="10">
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Benthic form of this circumglobal species distinguished by fine longitudinal brown-to-black lines usually interrupted by
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<normalizedToken originalValue="‘eyespots’">'eyespots'</normalizedToken>
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<pageBreakToken pageId="10" pageNumber="11" start="start">with</pageBreakToken>
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bright blue centres; tail long, swelling present in middle of body where parapodial lobes enclose large gill and anal siphon; rhinophores and oral tentacles long and slender. Specimens in any given population may have few or numerous villi, and this variation is still visible in the preserved material. It can be locally common in sea grass beds and shallow water, especially during the breeding season, but this does not happen every year (P Bidgrain, pers. comm. and http://seaslugs.free.fr/nudibranche/a_intro.htm).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="10" pageNumber="11" type="remarks">
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<paragraph pageId="10" pageNumber="11">Remarks.</paragraph>
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<paragraph pageId="10" pageNumber="11">
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There is probably only one species of
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<taxonomicName class="Gastropoda" family="Aplysiidae" genus="Stylocheilus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stylocheilus" order="Aplysiida" pageId="10" pageNumber="11" phylum="Mollusca" rank="genus">Stylocheilus</taxonomicName>
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occurring in two forms, the benthic striated form described and illustrated here, which was known as striatus, and the yellow pelagic form associated with seaweeds currently known as longicauda.
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</paragraph>
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<paragraph pageId="10" pageNumber="11">
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This may be an appropriate location to discuss the problems posed by the aplysiids distributed in the Indo-West Pacific: all species covered in this work are complex and appear to comprise colour forms identified as separate species, as well as having different habitat preferences.
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<taxonomicName class="Gastropoda" family="Aplysiidae" genus="Aplysia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Aplysia parvula" order="Aplysiida" pageId="10" pageNumber="11" phylum="Mollusca" rank="species" species="parvula">Aplysia parvula</taxonomicName>
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occurs consistently in at least two forms, the larger pale-coloured shallow water one associated with algae and the tiny black reef form although other colour forms are recorded (http://seaslugs.free.fr/nudibranche/a_intro.htm and http://www.nudipixel.net/species/aplysia_parvula/). It is noted that the radulae and shells were similar, with slight differences.
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<taxonomicName class="Gastropoda" family="Aplysiidae" genus="Dolabrifera" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dolabrifera dolabrifera" order="Aplysiida" pageId="10" pageNumber="11" phylum="Mollusca" rank="species" species="dolabrifera">Dolabrifera dolabrifera</taxonomicName>
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has been described under many names but has long been recognised as a single species. Many species of
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<taxonomicName class="Gastropoda" family="Aplysiidae" genus="Dolabella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dolabella" order="Aplysiida" pageId="10" pageNumber="11" phylum="Mollusca" rank="genus">Dolabella</taxonomicName>
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have been described but were historically resolved to two species, with different external and (possibly) internal morphologies and shells; these are synonymised as one species in this work. The history of
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<taxonomicName class="Gastropoda" family="Aplysiidae" genus="Stylocheilus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stylocheilus" order="Aplysiida" pageId="10" pageNumber="11" phylum="Mollusca" rank="genus">Stylocheilus</taxonomicName>
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is also complicated, with two very different forms inhabiting very different environments. Clearly the aplysiids are in need of revision, entailing comparison of specimens from different regions and habitats as well as a very thorough review of the literature; it is probable that the numerous species names currently listed will dissolve into fewer, variable species.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |