119 lines
10 KiB
XML
119 lines
10 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.729.21779" ID-GBIF-Dataset="6e6575bc-7fcf-4841-978e-f28c04f2fc48" ID-PMC="PMC5799731" ID-Pensoft-Pub="1313-2970-729-1" ID-PubMed="29416390" ID-ZBK="F54F5FF9F0B449C584A48E4BFC345B54" ModsDocAuthor="" ModsDocDate="2018" ModsDocID="1313-2970-729-1" ModsDocOrigin="ZooKeys 729" ModsDocTitle="Deep-Water Octocorals (Cnidaria, Anthozoa) from the Galápagos and Cocos Islands. Part 1: Suborder Calcaxonia" checkinTime="1516128713382" checkinUser="pensoft" docAuthor="Cairns, Stephen D." docDate="2018" docId="17BE74686EB7BD130D5492F993F027F8" docLanguage="en" docName="ZooKeys 729: 1-46" docOrigin="ZooKeys 729" docSource="http://dx.doi.org/10.3897/zookeys.729.21779" docTitle="Isidella tenuis Cairns, 2018, sp. n." docType="treatment" docUuid="3B9D476D-BB64-4348-B0F9-7883933E0375" docUuidSource="ZooBank" docVersion="5" lastPageNumber="29" masterDocId="C61C4B0C4A4A1107FFE4FFD0FFA7FFA3" masterDocTitle="Deep-Water Octocorals (Cnidaria, Anthozoa) from the Galapagos and Cocos Islands. Part 1: Suborder Calcaxonia" masterLastPageNumber="46" masterPageNumber="1" pageNumber="27" updateTime="1668165308991" 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>Deep-Water Octocorals (Cnidaria, Anthozoa) from the Galapagos and Cocos Islands. Part 1: Suborder Calcaxonia</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>Cairns, Stephen D.</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>2018</mods:date>
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<mods:detail type="volume">
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<mods:number>729</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>46</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.729.21779</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.729.21779</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-729-1</mods:identifier>
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<mods:identifier type="ZBK">F54F5FF9F0B449C584A48E4BFC345B54</mods:identifier>
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<mods:identifier type="ZooBank">F54F5FF9F0B449C584A48E4BFC345B54</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="140348338" LSID="urn:lsid:zoobank.org:act:3B9D476D-BB64-4348-B0F9-7883933E0375" httpUri="http://treatment.plazi.org/id/17BE74686EB7BD130D5492F993F027F8" lastPageId="28" lastPageNumber="29" pageId="26" pageNumber="27">
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<subSubSection pageId="26" pageNumber="27" type="nomenclature">
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<paragraph pageId="26" pageNumber="27">
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<taxonomicName LSID="http://zoobank.org/3B9D476D-BB64-4348-B0F9-7883933E0375" class="Anthozoa" family="Isididae" genus="Isidella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isidella tenuis" order="Alcyonacea" pageId="26" pageNumber="27" phylum="Cnidaria" rank="species" species="tenuis">Isidella tenuis</taxonomicName>
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<taxonomicNameLabel pageId="26" pageNumber="27">sp. n.</taxonomicNameLabel>
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Figures 3g, 16
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</paragraph>
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</subSubSection>
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<subSubSection pageId="26" pageNumber="27" type="reference_group">
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<paragraph pageId="26" pageNumber="27">
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<taxonomicName class="Anthozoa" family="Isididae" genus="Isidella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isidella" order="Alcyonacea" pageId="26" pageNumber="27" phylum="Cnidaria" rank="genus">Isidella</taxonomicName>
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sp.
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<bibRefCitation author="Breedy, O" journalOrPublisher="Revista de Biologia Tropical" pageId="29" pageNumber="30" pagination="71 - 77" title="Octocorals (Coelenterata: Anthozoa: Octocorallia) of the Isla del Coco, Costa Rica." volume="56" year="2008">
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Breedy and
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<normalizedToken originalValue="Cortés">Cortes</normalizedToken>
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2008
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</bibRefCitation>
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: 73, 76.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="26" pageNumber="27" type="materials_examined">
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<paragraph pageId="26" pageNumber="27">Material examined.</paragraph>
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<paragraph pageId="26" pageNumber="27">Types. Holotype: colony and SEM stubs 2355-2358, JSL-I-1942, USNM 89382. Paratypes: JSL-I-1942 4 colonies, USNM 1423001.</paragraph>
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</subSubSection>
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<subSubSection pageId="26" pageNumber="27" type="type locality">
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<paragraph pageId="26" pageNumber="27">Type locality.</paragraph>
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<paragraph pageId="26" pageNumber="27">
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="5.576667">5°34.6'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="9" value="-87.07083">87°04.25'W</geoCoordinate>
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(off Cocos Island), 606-628 m deep.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="26" pageNumber="27" type="distribution">
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<paragraph pageId="26" pageNumber="27">Distribution.</paragraph>
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<paragraph pageId="26" pageNumber="27">Known only form the type locality.</paragraph>
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</subSubSection>
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<subSubSection lastPageId="27" lastPageNumber="28" pageId="26" pageNumber="27" type="description">
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<paragraph pageId="26" pageNumber="27">Description.</paragraph>
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<paragraph pageId="26" pageNumber="27">The colony is uniplanar, the largest specimen (the holotype, Figure 3g) measuring 18 cm in height and 7 cm in width, with a basal branch diameter of 1.7 mm. The holotype shares a thin basal encrustation with another specimen (a paratype). Branching is always dichotomous from nodes, the internodes ranging from 9-14 mm in length. The internodes are white, not longitudinally grooved, and hollow, the central canal (Figure 16b) constituting about 35-40% of the branch diameter.</paragraph>
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<paragraph lastPageId="27" lastPageNumber="28" pageId="26" pageNumber="27">
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The polyps are uniserially placed (Figure 16a), their bases about 4-6 mm apart, but because of the length of the upturned polyps there is only 1-3 mm between adjacent polyps. The polyps are cylindrical and slender (Figure 16a), up to 3.3 mm in length and about 0.5 mm in diameter. Most of each polyp consists of eight elongate (up to 2.9 mm, L:W = 26-31), straight, cylindrical needles (Figure 16d), their pointed tips projecting beyond the tentacles. The sclerites bear numerous short (22-26
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<normalizedToken originalValue="µm">µm</normalizedToken>
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in length) ridges about 5
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<normalizedToken originalValue="µm">µm</normalizedToken>
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in height, which are arranged longitudinally on the sclerite (Figure 16e). Toward the base of the polyp are several shorter needles 0.95-1.0 mm in length (L:W = 17-19), these needles (Figure 16f) also being cylindrical but having blunt, flattened tips. Directly adjacent to the coenenchyme are also several even shorter needles (0.5 mm in length, L:W = about 13), also with flattened, blunt tips (Figure 16i). These two smaller size classes of needles allow for some flexibility of the polyp where it attached to the branch. The tentacular platelets (Figure 16h) are numerous, consisting of flat, blunt-tipped sclerites 0.095-0.1 mm in length and having a L:W of about 7. Their flat surfaces are fairly smooth, covered by small granules and
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<pageBreakToken pageId="27" pageNumber="28" start="start">low</pageBreakToken>
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ridges. The pharyngeal sclerites (Figure 16j) are small (0.072-0.10 mm in length) rodlets that bear relatively tall spines. The coenenchymal sclerites (Figure 16g) are quite rare, consisting of flat, blunt-tipped scales (like those of the tentacles), but larger: 0.15-0.18 mm in length (L:W = 4-5).
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</paragraph>
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<caption pageId="27" pageNumber="28">
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<paragraph pageId="27" pageNumber="28">
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Figure 16. Polyps and sclerites of
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<taxonomicName class="Anthozoa" family="Isididae" genus="Isidella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isidella tenuis" order="Alcyonacea" pageId="27" pageNumber="28" phylum="Cnidaria" rank="species" species="tenuis">Isidella tenuis</taxonomicName>
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, holotype, JSL-I-1929, USNM 89382, a lateral stereo view of two polyps b cross section of internode showing hollow core c stereo view of ridged ornamentation of body wall needles d upper body wall needles e enlargement of upper body wall needle f lower body wall needles g two coenenchymal scales h tentacular platelets i basal body wall needles j pharyngeal rodlets.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="28" pageNumber="29" type="comparisons">
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<paragraph pageId="28" pageNumber="29">
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<pageBreakToken pageId="28" pageNumber="29" start="start">Comparisons</pageBreakToken>
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.
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</paragraph>
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<paragraph pageId="28" pageNumber="29">
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<taxonomicName class="Anthozoa" family="Isididae" genus="Isidella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isidella tenuis" order="Alcyonacea" pageId="28" pageNumber="29" phylum="Cnidaria" rank="species" species="tenuis">Isidella tenuis</taxonomicName>
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differs from
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<taxonomicName lsidName="I. trichotoma" pageId="28" pageNumber="29" rank="species" species="trichotoma">I. trichotoma</taxonomicName>
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Bayer, 1990 (Hawaii, 1920 m) in having dichotomous branching, much smaller coenenchymal and body wall sclerites, and differently shaped pharyngeal sclerites.
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<taxonomicName class="Anthozoa" family="Isididae" genus="Isidella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isidella tenuis" order="Alcyonacea" pageId="28" pageNumber="29" phylum="Cnidaria" rank="species" species="tenuis">Isidella tenuis</taxonomicName>
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differs from
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<taxonomicName lsidName="I. tentaculatum" pageId="28" pageNumber="29" rank="species" species="tentaculatum">I. tentaculatum</taxonomicName>
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Etnoyer, 2008 (California to Alaska, 720-1050 m) in having needle-shaped body wall scales, differently shaped pharyngeal scales, smaller polyps, uniserial polyps, and blunt-tipped body wall sclerites.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="28" pageNumber="29" type="etymology">
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<paragraph pageId="28" pageNumber="29">Etymology.</paragraph>
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<paragraph pageId="28" pageNumber="29">
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Named
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<normalizedToken originalValue="“tenuis”">"tenuis"</normalizedToken>
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(Latin for thin) in reference to the slender polyps of the species.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |