165 lines
19 KiB
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165 lines
19 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.190.3059" ID-GBIF-Dataset="f477af3d-093b-4d27-8397-983ee9f306b0" ID-PMC="PMC3349064" ID-Pensoft-Pub="1313-2970-190-1" ID-PubMed="22639528" ModsDocAuthor="" ModsDocDate="2012" ModsDocID="1313-2970-190-1" ModsDocOrigin="ZooKeys 190" ModsDocTitle="Revision of Ilyphagus Chamberlin, 1919 (Polychaeta, Flabelligeridae)" checkinTime="1451249052469" checkinUser="pensoft" docAuthor="Salazar-Vallejo, Sergio I." docDate="2012" docId="90784E78E690EECE8A7F727A6D6B8BBB" docLanguage="en" docName="ZooKeys 190: 1-19" docOrigin="ZooKeys 190" docSource="http://dx.doi.org/10.3897/zookeys.190.3059" docTitle="Ilyphagus wyvillei McIntosh 1885" docType="treatment" docVersion="3" lastPageNumber="13" masterDocId="FF9CFFBDED485337FFDBFFA8C644FFB9" masterDocTitle="Revision of Ilyphagus Chamberlin, 1919 (Polychaeta, Flabelligeridae)" masterLastPageNumber="19" masterPageNumber="1" pageNumber="11" updateTime="1668153841455" 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>Revision of Ilyphagus Chamberlin, 1919 (Polychaeta, Flabelligeridae)</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>Salazar-Vallejo, Sergio I.</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>190</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>19</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.190.3059</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.190.3059</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-190-1</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="152035381" LSID="urn:lsid:plazi:treatment:90784E78E690EECE8A7F727A6D6B8BBB" httpUri="http://treatment.plazi.org/id/90784E78E690EECE8A7F727A6D6B8BBB" lastPageId="12" lastPageNumber="13" pageId="10" pageNumber="11">
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<subSubSection pageId="10" pageNumber="11" type="nomenclature">
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<paragraph pageId="10" pageNumber="11">
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<taxonomicName LSID="http://species-id.net/wiki/Ilyphagus_wyvillei" authority="McIntosh, 1885" authorityName="McIntosh" authorityYear="1885" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus wyvillei" order="Terebellida" pageId="10" pageNumber="11" phylum="Annelida" rank="species" species="wyvillei">Ilyphagus wyvillei (McIntosh, 1885)</taxonomicName>
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Figure 5
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</paragraph>
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</subSubSection>
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<subSubSection pageId="10" pageNumber="11" type="reference_group">
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<paragraph pageId="10" pageNumber="11">
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Trophonia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Trophonia wyvillei" order="Terebellida" pageId="10" pageNumber="11" phylum="Annelida" rank="species" species="wyvillei">Trophonia wyvillei</taxonomicName>
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McIntosh, 1885:366-370, pl. 44, fig. 6, pl. 23A, figs 11-14, pl. 36A, figs 5-7, pl. 37A, fig. 1.
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</paragraph>
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<paragraph pageId="10" pageNumber="11">
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus wyvillei" order="Terebellida" pageId="10" pageNumber="11" phylum="Annelida" rank="species" species="wyvillei">Ilyphagus wyvillei</taxonomicName>
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:
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<bibRefCitation author="Hartman, O" journalOrPublisher="Antarctic Research Series" pageId="13" pageNumber="14" pagination="1 - 158" title="Polychaeta Myzostomidae and Sedentaria of Antarctica." url="10.1029/AR007" volume="7" year="1966">Hartman 1966</bibRefCitation>
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:41-43, pl. 12, figs 7, 8 (n. comb.);
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<bibRefCitation author="Levenstein, RY" journalOrPublisher="Akademiya Nauk SSSR, Trudy Instituta Okeanologii" pageId="14" pageNumber="15" pagination="119 - 142" title="Mnogotschetinkovye chervi (Polychaeta) zhelobov Atlantitcheskogo sektora Antarktiki." volume="103" year="1975">Levenstein 1975</bibRefCitation>
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:133;
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<bibRefCitation author="Detinova, NN" journalOrPublisher="Shirshova, Rossiya Akademi Nauk" pageId="13" pageNumber="14" pagination="97 - 106" title="Mnogoshchetinkovye chervi Orkneiskogo zheloba. Trudy Instituta Okeanologiya P. P." volume="127" year="1993">Detinova 1993</bibRefCitation>
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:100-101.
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</paragraph>
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<paragraph pageId="10" pageNumber="11">
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Brada" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Brada gravieri" order="Terebellida" pageId="10" pageNumber="11" phylum="Annelida" rank="species" species="gravieri">Brada gravieri</taxonomicName>
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McIntosh, 1922:7-8, pl. 1, figs 4-6, pl. 3, fig. 1;
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<bibRefCitation author="Hartman, O" journalOrPublisher="Antarctic Research Series" pageId="13" pageNumber="14" pagination="1 - 158" title="Polychaeta Myzostomidae and Sedentaria of Antarctica." url="10.1029/AR007" volume="7" year="1966">Hartman 1966</bibRefCitation>
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:33, pl. 9, figs 1, 2;
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<bibRefCitation author="Hartman, O" journalOrPublisher="Antarctic Research Series" pageId="13" pageNumber="14" pagination="125 - 222" title="Polychaeta from the Weddell Sea Quadrant, Antarctica." url="10.1029/AR026p0125" volume="26" year="1978">Hartman 1978</bibRefCitation>
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:173.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="10" pageNumber="11" type="type material">
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<paragraph pageId="10" pageNumber="11">Type material.</paragraph>
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<paragraph pageId="10" pageNumber="11">
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Southeastern Pacific Ocean. Holotype (NHML-85.12.1.261), R/V Challenger Expedition, Stat. 157 (
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<geoCoordinate direction="south" orientation="latitude" precision="925" value="-53.916668">53°55'S</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="925" value="108.583336">108°35'E</geoCoordinate>
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), dredged, 1950 fathoms (3568.5 m), diatom ooze, 3 Mar. 1874.
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</paragraph>
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<caption pageId="10" pageNumber="11">
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<paragraph pageId="10" pageNumber="11">
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Figure 5.
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus wyvillei" order="Terebellida" pageId="10" pageNumber="11" phylum="Annelida" rank="species" species="wyvillei">Ilyphagus wyvillei</taxonomicName>
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(McIntosh, 1885). A Holotype (NHML-85.12.1.261), dorsal view B Same, ventral view, body completely dissected and inner organs removed C Same, left palp and two branchial filaments D Same, palp and branchia, with parasite and parasite scar on palp (insert: close-up of palp tip) E Non-type specimen (SIORAS-unnumb.), ventral view F Same, head, frontal view, palps and branchiae removed G Holotype (NHML-85.12.1.261), chaetiger 11, basal, medial and distal notochaetal regions H Same, chaetiger 10, basal, medial and distal neurochaetal regions. Bars.- A, B: 13 mm C 1 mm D 1.7 mm E 10 mm F 2.3 mm G 70
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<normalizedToken originalValue="µm">µm</normalizedToken>
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H 140
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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="10" pageNumber="11" type="additional material">
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<paragraph pageId="10" pageNumber="11">Additional material.</paragraph>
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<paragraph pageId="10" pageNumber="11">
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Antarctic Ocean. Several specimens (SIORAS-unnumb.), R/V Akademik Kurchatov, Stat. 914 (
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<geoCoordinate direction="south" orientation="latitude" precision="925" value="-56.35">56°21'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="925" value="-50.8">50°48'W</geoCoordinate>
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), 5650-6070 m, 14 Dec. 1971 (best specimen 49 mm long, 10 mm wide, cephalic cage 24 mm long (chaetiger 2 notochaetae 18 mm long), 22 chaetigers; 11 notochaetae in chaetiger 1; two anterior fragments dissected).
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="12" lastPageNumber="13" pageId="10" pageNumber="11" type="description">
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<paragraph pageId="10" pageNumber="11">Description.</paragraph>
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<paragraph pageId="10" pageNumber="11">Holotype pale brown (Fig. 5A), completely dissected mid-ventrally (Fig. 5B), internal organs and most anterior end appendages previously removed (now lost). Body sausage-shaped, anteriorly truncate, medially widened, posteriorly rounded (confirmed in non-type specimen, Fig. 5E); 63 mm long, about 30 mm wide, cephalic cage 27 mm long, 19 chaetigers. Body surface papillated; papillae abundant, cylindrical, very long, sediment particles along papillae, more abundant basally.</paragraph>
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<paragraph pageId="10" pageNumber="11">Anterior end dissected, most appendages now lost. Cephalic hood short, margin smooth. Prostomium flat, without eyes. No caruncle. Palps very large; one remains attached to anterior end fragment (Fig. 5C), with a distal parasite (Fig. 5D); other palp loose in container, longer than branchiae (longest remaining detached branchia 5 mm long), expanded, with a median furrow; palp lobes reduced. Branchiae cirriform, distally colorless, sessile on branchial plate, arranged in single row, in horse-shoe pattern (Fig. 5F), with 16 filaments (perhaps other four, much smaller, filaments distally, would make a secondary distal row).</paragraph>
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<paragraph pageId="11" pageNumber="12">
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<pageBreakToken pageId="11" pageNumber="12" start="start">Cephalic</pageBreakToken>
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cage chaetae as long as half body length, or about as long as body width. Chaetigers 1-2 involved in the cephalic cage, chaetiger 1 with 8-9 notochaetae in a single transverse row and 11-12 neurochaetae arranged in a C-pattern, opening to posterior region; chaetiger 2 with 5-6 noto- and 9-10 neurochaetae.
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</paragraph>
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<paragraph pageId="11" pageNumber="12">Anterior dorsal margin of first chaetiger truncate, papillated; anterior chaetigers without especially long papillae. Chaetigers 1-3 becoming progressively longer. Chaetal transition from cephalic cage to body chaetae abrupt; aristate neurospines from chaetiger 3. Gonopodial lobes in chaetiger 5, short, dark digitate, mostly covered by papillae.</paragraph>
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<paragraph pageId="11" pageNumber="12">Parapodia poorly developed, chaetae emerge from the body wall. Parapodia lateral, median neuropodia ventrolateral. Noto- and neuropodia close to each other, without especially longer papillae, some slightly thicker papillae bordering chaetae.</paragraph>
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<paragraph lastPageId="12" lastPageNumber="13" pageId="11" pageNumber="12">
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Median notochaetae arranged in short transverse rows, most notochaetae broken, length relationships with body width unknown, 1-3 per ramus; all multiarticulated capillaries, articles short basally, slightly longer medially, long subdistally (tips un
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<pageBreakToken pageId="12" pageNumber="13" start="start">known</pageBreakToken>
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, Fig. 5G). Neurochaetae multiarticulated capillaries in chaetigers 1-2; aristate neurospines from chaetiger 3, arranged in transverse rows, 7-8 per bundle. Each neurospine with very short articles basal- and medially (Fig. 5H); distally hyaline, smooth.
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</paragraph>
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<paragraph pageId="12" pageNumber="13">Posterior end rounded; pygidium with anus ventro-terminal, without anal cirri.</paragraph>
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</subSubSection>
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<subSubSection pageId="12" pageNumber="13" type="remarks">
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<paragraph pageId="12" pageNumber="13">Remarks.</paragraph>
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<paragraph pageId="12" pageNumber="13">
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus wyvillei" order="Terebellida" pageId="12" pageNumber="13" phylum="Annelida" rank="species" species="wyvillei">Ilyphagus wyvillei</taxonomicName>
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(McIntosh, 1885) resembles
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="12" pageNumber="13" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
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because they both have globose bodies with distally smooth aristate neurospines. They differ because
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus wyvillei" order="Terebellida" pageId="12" pageNumber="13" phylum="Annelida" rank="species" species="wyvillei">Ilyphagus wyvillei</taxonomicName>
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has comparatively shorter cephalic cage chaetae than
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="12" pageNumber="13" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
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, and because in
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus wyvillei" order="Terebellida" pageId="12" pageNumber="13" phylum="Annelida" rank="species" species="wyvillei">Ilyphagus wyvillei</taxonomicName>
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there are only 16 branchiae, whereas in
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="12" pageNumber="13" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
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there are about 40. On the other hand,
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus wyvillei" order="Terebellida" pageId="12" pageNumber="13" phylum="Annelida" rank="species" species="wyvillei">Ilyphagus wyvillei</taxonomicName>
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resembles
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus coronatus" order="Terebellida" pageId="12" pageNumber="13" phylum="Annelida" rank="species" species="coronatus">Ilyphagus coronatus</taxonomicName>
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Monro, 1939, because in their first chaetiger, neurochaetae are arranged in a C-pattern, opening to the posterior region, and by having distally smooth neurospines. However, they differ because
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus wyvillei" order="Terebellida" pageId="12" pageNumber="13" phylum="Annelida" rank="species" species="wyvillei">Ilyphagus wyvillei</taxonomicName>
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has fewer chaetigers (19-22 vs 23-25) and a more globose body but these differences might be modified after more specimens are studied. Two other differences are probably more relevant and must be emphasized:the relative number of neurochaetae in the first chaetiger (11-12 in
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus wyvillei" order="Terebellida" pageId="12" pageNumber="13" phylum="Annelida" rank="species" species="wyvillei">Ilyphagus wyvillei</taxonomicName>
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, 8 in
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus coronatus" order="Terebellida" pageId="12" pageNumber="13" phylum="Annelida" rank="species" species="coronatus">Ilyphagus coronatus</taxonomicName>
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), and the start of the aristate neurospines (chaetiger 2 in
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus wyvillei" order="Terebellida" pageId="12" pageNumber="13" phylum="Annelida" rank="species" species="wyvillei">Ilyphagus wyvillei</taxonomicName>
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, chaetiger 3 in
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus coronatus" order="Terebellida" pageId="12" pageNumber="13" phylum="Annelida" rank="species" species="coronatus">Ilyphagus coronatus</taxonomicName>
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).
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</paragraph>
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<paragraph pageId="12" pageNumber="13">
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The presence of parasitic copepods in the branchial bases of
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus wyvillei" order="Terebellida" pageId="12" pageNumber="13" phylum="Annelida" rank="species" species="wyvillei">Ilyphagus wyvillei</taxonomicName>
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cannot be confirmed due to the state of the anterior end; however, one portion of a parasite is visible at one of the palps tip, and there is another deep scar in the same palp. McIntosh might have confused the attachment site, because he dissected the anterior end and branchial scars could be confused with these parasite attachment sites.
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</paragraph>
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<paragraph pageId="12" pageNumber="13">
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Brada" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Brada gravieri" order="Terebellida" pageId="12" pageNumber="13" phylum="Annelida" rank="species" species="gravieri">Brada gravieri</taxonomicName>
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McIntosh, 1922 might belong to the same species. There is no type material available; it is probably lost. However, the original illustrations and description noticed the lack of the cephalic cage chaetae, whereas the neurochaetae (pp 7-8) were described as translucent, smooth, devoid of transversal marks. The distal part of neurochaetae is often smooth, hyaline, but the rest of the chaetae have anchylosed articles or transverse markings throughout it. They were collected from relatively close localities but fresh material needs to be examined to clarify this.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="12" pageNumber="13" type="distribution">
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<paragraph pageId="12" pageNumber="13">Distribution.</paragraph>
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<paragraph pageId="12" pageNumber="13">
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Originally described from the Antarctic Ocean, it has been found in abyssal depths off Western South America (Levenstein, 1975). The Bering Sea records by
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<bibRefCitation author="Levenstein, RY" journalOrPublisher="Akademiya Nauk SSSR, Trudy Instituta Okeanology" pageId="14" pageNumber="15" pagination="147 - 178" title="Mnogotschetinkovye tchervi glubokovodnoi tchasti Beringova morya." volume="46" year="1961 a">Levenstein (1961a</bibRefCitation>
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:160,
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<bibRefCitation author="Levenstein, RY" journalOrPublisher="Akademiya Nauk SSSR, Trudy Instituta Okeanologii" pageId="14" pageNumber="15" pagination="3 - 131" title="Mnogotshchetinkov'e chervi (Polychaeta) zapadnoi tasti Beringova morya." volume="81" year="1966">1966</bibRefCitation>
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:46), cannot be confirmed because the specimens were not found.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |