132 lines
11 KiB
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132 lines
11 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.665.10476" ID-GBIF-Dataset="deca21d0-8058-4f45-9d40-379243fe86ea" ID-PMC="PMC5523164" ID-Pensoft-Pub="1313-2970-665-1" ID-PubMed="28769624" ID-ZBK="9117BAF17E9B4E2599EC7C8C6A8F456E" ModsDocAuthor="" ModsDocDate="2017" ModsDocID="1313-2970-665-1" ModsDocOrigin="ZooKeys 665" ModsDocTitle="Chitons (Mollusca, Polyplacophora) from Alacranes Reef, Yucatan, Mexico" checkinTime="1491256510415" checkinUser="pensoft" docAuthor="Reyes-Gomez, Adriana, Ortigosa, Deneb & Simoes, Nuno" docDate="2017" docId="61DB1E95B5A4586F77BE15B411D7C2B4" docLanguage="en" docName="ZooKeys 665: 1-36" docOrigin="ZooKeys 665" docSource="http://dx.doi.org/10.3897/zookeys.665.10476" docTitle="Lepidochitona liozonis Dall & Simpson 1901" docType="treatment" docVersion="4" lastPageNumber="4" masterDocId="CB0B5931FFA4FF90FFDBFFF5FFC0FFC9" masterDocTitle="Chitons (Mollusca, Polyplacophora) from Alacranes Reef, Yucatan, Mexico" masterLastPageNumber="36" masterPageNumber="1" pageNumber="4" updateTime="1668164344508" 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>Chitons (Mollusca, Polyplacophora) from Alacranes Reef, Yucatan, Mexico</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>Reyes-Gomez, Adriana</mods:namePart>
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</mods:name>
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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>Ortigosa, Deneb</mods:namePart>
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</mods:name>
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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>Simoes, Nuno</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>2017</mods:date>
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<mods:detail type="volume">
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<mods:number>665</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>36</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.665.10476</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.665.10476</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-665-1</mods:identifier>
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<mods:identifier type="ZBK">9117BAF17E9B4E2599EC7C8C6A8F456E</mods:identifier>
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<mods:identifier type="ZooBank">9117BAF17E9B4E2599EC7C8C6A8F456E</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="128123036" LSID="urn:lsid:plazi:treatment:61DB1E95B5A4586F77BE15B411D7C2B4" httpUri="http://treatment.plazi.org/id/61DB1E95B5A4586F77BE15B411D7C2B4" lastPageNumber="4" pageId="3" pageNumber="4">
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<subSubSection pageId="3" pageNumber="4" type="nomenclature">
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<paragraph pageId="3" pageNumber="4">
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<taxonomicName authority="Dall & Simpson, 1901" authorityName="Dall & Simpson" authorityYear="1901" class="Polyplacophora" family="Lepidochitonidae" genus="Lepidochitona" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Lepidochitona liozonis" order="Chitonida" pageId="3" pageNumber="4" phylum="Mollusca" rank="species" species="liozonis">Lepidochitona liozonis (Dall & Simpson, 1901)</taxonomicName>
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Figures 6
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<normalizedToken originalValue="D–E">D-E</normalizedToken>
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, 8
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<normalizedToken originalValue="A–I">A-I</normalizedToken>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="3" pageNumber="4" type="materials_examined">
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<paragraph pageId="3" pageNumber="4">Material examined.</paragraph>
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<paragraph pageId="3" pageNumber="4">One specimen of 10 mm long, 6 mm wide. Isla Perez (CNMO5002).</paragraph>
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</subSubSection>
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<subSubSection pageId="3" pageNumber="4" type="description">
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<paragraph pageId="3" pageNumber="4">Description.</paragraph>
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<paragraph pageId="3" pageNumber="4">
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Small-sized chiton, of elongate-oval shape. Tegmentum dark orange, mottled with small white spots, tail valve showing a large irregularly shaped white spot on the postmucronal area; girdle with irregular lighter and darker longitudinal bands (Figure 6D). Tegmentum micro-granular, smooth, usually with growth lines. Head valve (Figure 8A) semicircular; posterior margin
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<normalizedToken originalValue="“V”">"V"</normalizedToken>
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shaped and notched. Tail valve (Figure 8B), wider than long, semicircular, the antemucronal and postmucronal area are indicated by a weak diagonal ridge; mucro somewhat elevated, antemedian; postmucronal slope slightly concave. Intermediate valves (Figure 8C) broadly rectangular, side margins somewhat rounded, posterior margin convex, with a prominent beak; lateral areas not rosy, with a faint diagonal ridge line. Articulamentum thin and translucent; apophyses well separated, long and narrow; slit formula 10/1/12. Megalaesthetes large (Figure 8D), arranged longitudinally, forming a depression on the tegmentum. Girdle covered with small, short, distally rounded spicules (Figure 8E, F), scattered with hyaline curved spicules (Figure 8E), arranged in groups of 2-3. Radula (Figure 8G) with a long, spatulate central tooth, distally wider, with its anterior end curved outwards; major lateral tooth tricuspid, the cusps around the same size (Figure 8H), the minor lateral tooth sub triangularly shaped, almost half the size of the central tooth (Figure 8I).
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</paragraph>
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<caption pageId="3" pageNumber="4">
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<paragraph pageId="3" pageNumber="4">
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Figure 8.
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<taxonomicName class="Polyplacophora" family="Tonicellidae" genus="Lepidochitona" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Lepidochitona liozonis" order="Chitonida" pageId="3" pageNumber="4" phylum="Mollusca" rank="species" species="liozonis">Lepidochitona liozonis</taxonomicName>
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(Dall & Simpson, 1901). Scanning electron images of a specimen from Isla Perez (CNMO5002, 10 mm length). A dorsal view of head valve (I), SB = 1 mm B dorsal view of tail valve (VIII), SB = 1 mm C dorsal view of intermediate valve IV, SB = 1 mm D detail of aesthetes of valve IV, SB = 100
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<normalizedToken originalValue="μm">μm</normalizedToken>
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E girdle hyaline spicules, SB = 20
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<normalizedToken originalValue="μm">μm</normalizedToken>
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F detail of girdle spicules, SB = 10
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<normalizedToken originalValue="μm">μm</normalizedToken>
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G radular teeth, SB = 50
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<normalizedToken originalValue="μm">μm</normalizedToken>
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H major lateral teeth detail, SB = 50
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<normalizedToken originalValue="μm">μm</normalizedToken>
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I detail of central and minor lateral teeth, SB = 20
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<normalizedToken originalValue="μm">μm</normalizedToken>
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.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="3" pageNumber="4" type="habitat">
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<paragraph pageId="3" pageNumber="4">Habitat.</paragraph>
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<paragraph pageId="3" pageNumber="4">Found in the intertidal on rocks, associated with crustose coralline red and brown algae.</paragraph>
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</subSubSection>
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<subSubSection pageId="3" pageNumber="4" type="remarks">
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<paragraph pageId="3" pageNumber="4">Remarks.</paragraph>
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<paragraph pageId="3" pageNumber="4">
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This species was considered by
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<bibRefCitation author="Ferreira, JA" journalOrPublisher="Bulletin of Marine Science" pageId="11" pageNumber="12" pagination="189 - 219" title="Chiton (Mollusca: Polyplacophora) fauna of Barbados, West Indies, with the description of a new species." volume="36" year="1985">Ferreira (1985)</bibRefCitation>
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as a synonym of
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<taxonomicName class="Polyplacophora" family="Tonicellidae" genus="Lepidochitona" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Lepidochitona beanii" order="Chitonida" pageId="3" pageNumber="4" phylum="Mollusca" rank="species" species="beanii">Lepidochitona beanii</taxonomicName>
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(Carpenter, 1857). According to him, there were no particular differences between similar appearing specimens from the Caribbean or Eastern Pacific. However, in our opinion, there are major differences between them. As earlier noted by
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<bibRefCitation author="Kaas, P" journalOrPublisher="Brill / Backhuys, Leiden" pageId="12" pageNumber="13" title="Monograph of Living Chitons (Mollusca: Polyplacophora). Vol 2. Suborder Ischnochitonina. Ischnochitonidae. Schizoplacinae, Callochitoninae and Lepidochitoninae." year="1985">Kaas and Van Belle (1985)</bibRefCitation>
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,
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<taxonomicName lsidName="L. liozonis" pageId="3" pageNumber="4" rank="species" species="liozonis">L. liozonis</taxonomicName>
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has an antemedian mucro, the apophyses are sinuated and somewhat elongated, and the girdle shows irregular slender spicules. In contrast,
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<taxonomicName lsidName="L. beanii" pageId="3" pageNumber="4" rank="species" species="beanii">L. beanii</taxonomicName>
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bears a postmedian mucro, has shorter and semi-rectangular shaped apophyses, and hyaline long spicules interspersed and bunched at the sutures in groups of 3-4.
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</paragraph>
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<paragraph pageId="3" pageNumber="4">
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Recently,
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<bibRefCitation author="Garcia-Rios, CI" journalOrPublisher="Editorial Isla Negra, San Juan Puerto Rico" pageId="12" pageNumber="13" url="https://doi.org/10.15517/rbt.v63i2.14862" year="2015">
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<normalizedToken originalValue="García-Ríos">Garcia-Rios</normalizedToken>
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(2015)
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</bibRefCitation>
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compared the morphologic features and DNA sequences (mitochondrial cytochrome oxidase subunit I or COI) of
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<taxonomicName lsidName="L. liozonis" pageId="3" pageNumber="4" rank="species" species="liozonis">L. liozonis</taxonomicName>
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from its type locality (Puerto Rico, Culebra Island, Ensenada Honda) to specimens from Florida Keys, which were considered as variety
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<normalizedToken originalValue="“tropica”">"tropica"</normalizedToken>
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(
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<bibRefCitation author="Pilsbry, HA" journalOrPublisher="Nautilus" pageId="13" pageNumber="14" title="On The Life Habits Of Some Tropical Fresh-Water Mussels By Fritz Haas" volume="53" year="1940">Pilsbry 1940</bibRefCitation>
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). His results showed that these have to be considered as two different species.
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<taxonomicName class="Polyplacophora" family="Tonicellidae" genus="Lepidochitona" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Lepidochitona pseudoliozonis" order="Chitonida" pageId="3" pageNumber="4" phylum="Mollusca" rank="species" species="pseudoliozonis">Lepidochitona pseudoliozonis</taxonomicName>
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<normalizedToken originalValue="García-Ríos">Garcia-Rios</normalizedToken>
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, 2015 from Florida Keys is characterized by its larger body size (average of 9.7 mm), the deep concave postmucronal slope, and the longer marginal spicules. The Puerto Rico specimens (representing
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<taxonomicName lsidName="L. liozonis" pageId="3" pageNumber="4" rank="species" species="liozonis">L. liozonis</taxonomicName>
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) can be distinguished by their smaller body length (average of 7 mm), the postmucronal slope being almost straight to somewhat concave, and with shorter marginal spicules. The examination of the
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<taxonomicName lsidName="L. liozonis" pageId="3" pageNumber="4" rank="species" species="liozonis">L. liozonis</taxonomicName>
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type specimen (USNM161920) (Figure 14B) revealed that the postmucronal slope of the tail valve is somewhat concave (Figure 6E), and the intermediate valves are carinated with a pointed apex. The PNAA specimens resemble the holotype and the specimens from Puerto Rico, both with a slightly concave postmucronal slope, which seems to be a morphologic feature that discriminates both species.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |