128 lines
9.8 KiB
XML
128 lines
9.8 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.158.1910" ID-GBIF-Dataset="45221874-7fe5-4bd5-a3da-3b318b7dd9a8" ID-PMC="PMC3253626" ID-Pensoft-Pub="1313-2970-158-1" ID-PubMed="22303109" ModsDocAuthor="" ModsDocDate="2011" ModsDocID="1313-2970-158-1" ModsDocOrigin="ZooKeys 158" ModsDocTitle="A Revision of the Stylasteridae (Cnidaria, Hydrozoa, Filifera) from Alaska and Adjacent Waters" checkinTime="1451249442870" checkinUser="pensoft" docAuthor="Cairns, Stephen D. & Lindner, Alberto" docDate="2011" docId="7D0958D971D8614B00DA843E606B4BB2" docLanguage="en" docName="ZooKeys 158: 1-88" docOrigin="ZooKeys 158" docSource="http://dx.doi.org/10.3897/zookeys.158.1910" docTitle="Stylaster elassotomus Fisher 1938" docType="treatment" docVersion="4" lastPageNumber="52" masterDocId="CD06FFFFD917034E2D15FFB73E6BFFD7" masterDocTitle="A Revision of the Stylasteridae (Cnidaria, Hydrozoa, Filifera) from Alaska and Adjacent Waters" masterLastPageNumber="88" masterPageNumber="1" pageNumber="50" updateTime="1668153073747" 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>A Revision of the Stylasteridae (Cnidaria, Hydrozoa, Filifera) from Alaska and Adjacent Waters</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: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>Lindner, Alberto</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>2011</mods:date>
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<mods:detail type="volume">
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<mods:number>158</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>88</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.158.1910</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.158.1910</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-158-1</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="152032753" LSID="urn:lsid:plazi:treatment:7D0958D971D8614B00DA843E606B4BB2" httpUri="http://treatment.plazi.org/id/7D0958D971D8614B00DA843E606B4BB2" lastPageId="51" lastPageNumber="52" pageId="49" pageNumber="50">
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<subSubSection pageId="49" pageNumber="50" type="nomenclature">
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<paragraph pageId="49" pageNumber="50">
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<taxonomicName LSID="http://species-id.net/wiki/Stylaster_elassotomus" authority="Fisher, 1938" authorityName="Fisher" authorityYear="1938" class="Hydrozoa" family="Stylasteridae" genus="Stylaster" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stylaster elassotomus" order="Anthoathecata" pageId="49" pageNumber="50" phylum="Cnidaria" rank="species" species="elassotomus">Stylaster elassotomus Fisher, 1938</taxonomicName>
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Figs 21C25
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<normalizedToken originalValue="A–G">A-G</normalizedToken>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="49" pageNumber="50" type="reference_group">
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<paragraph pageId="49" pageNumber="50">
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<taxonomicName class="Hydrozoa" family="Stylasteridae" genus="Stylaster" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stylaster elassotomus" order="Anthoathecata" pageId="49" pageNumber="50" phylum="Cnidaria" rank="species" species="elassotomus">Stylaster elassotomus</taxonomicName>
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Fisher, 1938: 499-500, pl. 41, fig. 3, pl. 42, figs 1-1c, pl. 49, fig. 1.-
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<bibRefCitation author="Boschma, H" journalOrPublisher="Zoologische Verhandelingen" pageId="60" pageNumber="61" pagination="1 - 72" title="List of the described species of the order Stylasterina." volume="33" year="1957">Boschma 1957</bibRefCitation>
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: 7.-
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<bibRefCitation pageId="49" pageNumber="50">Wing and Barnard 2004</bibRefCitation>
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: 11 (key), 28.-
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<bibRefCitation author="Heifetz, J" journalOrPublisher="Fisheries Oceanography" pageId="60" pageNumber="61" pagination="131 - 138" title="Corals of the Aleutian Islands." url="doi: 10.1111/j.1365-2419.2005.00371.x" volume="14" year="2005">Heifetz et al. 2005</bibRefCitation>
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: 134, 137 (listed).-
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<bibRefCitation pageId="49" pageNumber="50">Stone and Shotwell 2007</bibRefCitation>
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: 108 (listed).-Jameison et al. 2007: 224 (listed).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="49" pageNumber="50" type="type material">
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<paragraph pageId="49" pageNumber="50">Type material.</paragraph>
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<paragraph pageId="49" pageNumber="50">
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Holotype: 1 dry male colony, and SEM stub 1507, USNM 43268 (Fig. 21C). The pale pink paratype 5 cm in length (USNM 86007) mentioned by Fisher is an unidentified
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<taxonomicName class="Hydrozoa" family="Stylasteridae" genus="Stylaster" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stylaster" order="Anthoathecata" pageId="49" pageNumber="50" phylum="Cnidaria" rank="genus">Stylaster</taxonomicName>
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having little in common with the holotype. Type locality.Albatross 4781,
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<geoCoordinate direction="north" orientation="latitude" precision="15" value="52.24167">52°14'30"N</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="925" value="174.21666">174°13'E</geoCoordinate>
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(off Agattu Island), 882 m.
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="50" lastPageNumber="51" pageId="49" pageNumber="50" type="material examined">
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<paragraph pageId="49" pageNumber="50">Material examined.</paragraph>
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<paragraph pageId="49" pageNumber="50">Types.</paragraph>
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<paragraph pageId="49" pageNumber="50">
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Description. Holotype (Fig. 21C) colony bushy, 5.5 cm tall and 4.5 cm wide, attached by a basal branch 6 mm in diameter. Branches do not anastomose and are circular in cross section. Coenosteum reticular-granular in texture, the strips 55-60
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<normalizedToken originalValue="µm">µm</normalizedToken>
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in width, separated by slits 10-14
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<normalizedToken originalValue="µm">µm</normalizedToken>
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wide; strips covered with small angular granules. Spionid worm tubes absent. Coenosteum white.
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</paragraph>
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<paragraph lastPageId="50" lastPageNumber="51" pageId="49" pageNumber="50">
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Cyclosystems circular to slightly elliptical, 1.0-1.2 mm in diameter, arranged exclusively on branch edges in an alternating fashion, most projecting perpendicular to branch. Gastropores circular and quite large (0.5-0.6 mm in diameter), occupying up to 55% of cyclosystem diameter (Fig. 25F). Gastropore tube cylindrical, curved, and long, such that gastrostyle tip is rarely seen when viewed from above (Fig. 25A). A delicate ring palisade (Fig. 25
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<normalizedToken originalValue="C–D">C-D</normalizedToken>
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) occurs near gastrostyle tip, composed of slender cylindrical elements up to 60
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long and 25
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<normalizedToken originalValue="µm">µm</normalizedToken>
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in diameter. Gastrostyle slender (H:D
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<pageBreakToken pageId="50" pageNumber="51" start="start">=</pageBreakToken>
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4.4), the illustrated style 0.53 mm in height, occupying lower quarter of gastropore tube (Fig. 25A).
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</paragraph>
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<paragraph pageId="50" pageNumber="51">
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Dactylotomes 60-80
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<normalizedToken originalValue="µm">µm</normalizedToken>
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wide but very short as well as having short internal slits, thus contributing to the large size of the gastropore tube (Fig. 25F); dactylostyles inconspicuous. Range of dactylopores per cyclosystem 11-17 (n = 21, average = 14.40 (σ = 1.36), and mode = 15). Supernumerary dactylopores common (Fig. 25B), 70-100
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<normalizedToken originalValue="µm">µm</normalizedToken>
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in diameter. Pseudosepta same width as dactylotomes; diastemas rare.
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</paragraph>
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<paragraph pageId="50" pageNumber="51">Female ampullae unknown. Male ampullae (Fig. 25G) hemispherical, 0.5-0.6 mm in diameter.</paragraph>
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</subSubSection>
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<subSubSection pageId="51" pageNumber="52" type="remarks">
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<paragraph pageId="51" pageNumber="52">
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<pageBreakToken pageId="51" pageNumber="52" start="start">Remarks</pageBreakToken>
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.
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</paragraph>
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<paragraph pageId="51" pageNumber="52">
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Despite access to a diverse stylasterid collection from the Aleutian Islands, no unequivocal additional specimens could be identified as
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<taxonomicName class="Hydrozoa" family="Stylasteridae" genus="Stylaster" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stylaster elassotomus" order="Anthoathecata" pageId="51" pageNumber="52" phylum="Cnidaria" rank="species" species="elassotomus">Stylaster elassotomus</taxonomicName>
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, even the paratype of the species not considered to be conspecific. Its distinctive characteristics of having a highly curved gastropore tube, slender ring palisade elements, and a very large gastropore surrounded by very short dactylotomes and pseudosepta distinguish it from all other Alaskan species (see Table 2).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="51" pageNumber="52" type="distribution">
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<paragraph pageId="51" pageNumber="52">Distribution.</paragraph>
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<paragraph pageId="51" pageNumber="52">Known only from type locality.</paragraph>
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<caption pageId="51" pageNumber="52">
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<paragraph pageId="51" pageNumber="52">
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Figure 25. Holotype (male) of
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<taxonomicName class="Hydrozoa" family="Stylasteridae" genus="Stylaster" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stylaster elassotomus" order="Anthoathecata" pageId="51" pageNumber="52" phylum="Cnidaria" rank="species" species="elassotomus">Stylaster elassotomus</taxonomicName>
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, USNM 43268: A stereo view of curved gastropore tube B cyclosystems and supernumerary dactylopores C poorly preserved gastrostyle and ring palisade D truncated gastrostyle showing ring palisade E coenosteal texture F stereo view of cyclosystem showing shallow dactylotomes G male ampulla.
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</paragraph>
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</caption>
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</subSubSection>
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</treatment>
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</document> |