472 lines
63 KiB
XML
472 lines
63 KiB
XML
<document id="44E2A0B811889897011C6602389AEE09" ID-DOI="10.5281/zenodo.175193" ID-GBIF-Dataset="a5dd4518-0195-4cc3-8e64-95b438a25366" ID-ISSN="11755326" ID-Zenodo-Dep="175193" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1459802613820" checkinUser="plazi" docAuthor="Soliman, Yousria & Wicksten, Mary" docDate="2007" docId="4123DA39FFFBFFFBC1E2FB84E63DFB63" docLanguage="en" docName="zt01389p054.pdf" docOrigin="Zootaxa 1389" docStyle="DocumentStyle:6581673A57F01A3145754A1E615EDFF0.4:Zootaxa.2007-2008.journal_article" docStyleId="6581673A57F01A3145754A1E615EDFF0" docStyleName="Zootaxa.2007-2008.journal_article" docStyleVersion="4" docTitle="Ampelisca mississippiana Soliman & Wicksten, 2007, sp. nov." docType="treatment" docVersion="10" lastPageNumber="53" masterDocId="BD1AA241FFFAFFF3C175FFF6E212FFA7" masterDocTitle="Ampelisca mississippiana: a new species (Crustacea: Amphipoda: Gammaridea) from the Mississippi Canyon (Northern Gulf of Mexico)" masterLastPageNumber="54" masterPageNumber="45" pageNumber="46" updateTime="1698220118478" updateUser="plazi">
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<mods:mods id="74FB91B63C9A89DA62BCA8BA108B6207" xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo id="92D295FE4FC6F0FB24768D453A8367CF">
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<mods:title id="87B04337CFE0FFF7138A9DE1F3D977EE">Ampelisca mississippiana: a new species (Crustacea: Amphipoda: Gammaridea) from the Mississippi Canyon (Northern Gulf of Mexico)</mods:title>
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</mods:titleInfo>
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<mods:name id="1C13BEC9163B5DC6BE80EEA3896281EF" type="personal">
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<mods:role id="8EB9CA74E834E6D2FE82A721C949C4EB">
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<mods:roleTerm id="E4718307F4E8F139752FE18243C4AB99">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="5D596ADCC831C5C55B1D3FA9726548DD">Soliman, Yousria</mods:namePart>
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</mods:name>
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<mods:name id="B56339CDBD7278C388833B684D15F014" type="personal">
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<mods:role id="F73094CC9FB3D00A96BF22EEEAFFCAA5">
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<mods:roleTerm id="B1A53F6DF0206DE556C3E6EA8CFF3A9A">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="51D991E13EF20AB59D8F5C01D64D5039">Wicksten, Mary</mods:namePart>
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</mods:name>
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<mods:typeOfResource id="3C1FFE539E482176954055A3078396E7">text</mods:typeOfResource>
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<mods:titleInfo id="AF2423A20734824D8AB1962A62BBDF59">
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<mods:title id="E59B002F9E6E17A93EE9D35178D41779">Zootaxa</mods:title>
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</mods:titleInfo>
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<mods:part id="A10978977477204BD825170AAF5B89C7">
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<mods:date id="4A220DC7A9F2914F547EFEC66C2C772A">2007</mods:date>
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<mods:detail id="B30719B01ABC4CCF9D865FC988E083EC" type="volume">
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<mods:number id="F36113D016981337B79EEEB3A0185BD0">1389</mods:number>
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<mods:start id="18541CB271F21D0FB60353FB58650EE7">45</mods:start>
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<mods:end id="BC6435C5485236C08E1E7BDA1585D5FD">54</mods:end>
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<mods:classification id="511899C21A74A3C7290233DB2923706A">journal article</mods:classification>
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<mods:identifier id="8769CF1219E171CF8227443907178FE0" type="DOI">10.5281/zenodo.175193</mods:identifier>
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<mods:identifier id="DE5F4F70CB2C00B854F9D8D0BB300FE7" type="GBIF-Dataset">a5dd4518-0195-4cc3-8e64-95b438a25366</mods:identifier>
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<mods:identifier id="CFEBFFCA69B4D54899D8FAAB78BB13CB" type="ISSN">11755326</mods:identifier>
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<mods:identifier id="E5B1F7C7DA814ABBB6C61A11FEEEE9B1" type="Zenodo-Dep">175193</mods:identifier>
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<treatment id="4123DA39FFFBFFFBC1E2FB84E63DFB63" ID-DOI="http://doi.org/10.5281/zenodo.5671680" ID-GBIF-Taxon="119352117" ID-Zenodo-Dep="5671680" LSID="urn:lsid:plazi:treatment:4123DA39FFFBFFFBC1E2FB84E63DFB63" httpUri="http://treatment.plazi.org/id/4123DA39FFFBFFFBC1E2FB84E63DFB63" lastPageId="8" lastPageNumber="53" pageId="1" pageNumber="46">
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<subSubSection id="819038A4FFFBFFF2C1E2FB84E324FB08" pageId="1" pageNumber="46" type="nomenclature">
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<paragraph id="C9356B2FFFFBFFF2C1E2FB84E025FB2B" blockId="1.[151,567,1138,1199]" box="[151,567,1138,1164]" pageId="1" pageNumber="46">
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<heading id="927DDC43FFFBFFF2C1E2FB84E025FB2B" bold="true" box="[151,567,1138,1164]" fontSize="11" level="1" pageId="1" pageNumber="46" reason="1">
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<emphasis id="FBFEB73DFFFBFFF2C1E2FB84E025FB2B" bold="true" box="[151,567,1138,1164]" pageId="1" pageNumber="46">
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<taxonomicName id="0E8A10ACFFFBFFF2C1E2FB84E3DEFB2B" ID-CoL="CY3S" box="[151,460,1138,1164]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="1" pageNumber="46" phylum="Arthropoda" rank="species" species="mississippiana" status="sp. nov.">
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<emphasis id="FBFEB73DFFFBFFF2C1E2FB84E3DEFB2B" bold="true" box="[151,460,1138,1164]" italics="true" pageId="1" pageNumber="46">Ampelisca mississippiana</emphasis>
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</taxonomicName>
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,
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<taxonomicNameLabel id="E0CD0A46FFFBFFF2C0AFFB84E025FB2B" box="[474,567,1138,1164]" pageId="1" pageNumber="46" rank="species">sp. nov.</taxonomicNameLabel>
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</emphasis>
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</heading>
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</paragraph>
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<paragraph id="C9356B2FFFFBFFF2C1E2FB63E324FB08" blockId="1.[151,567,1138,1199]" box="[151,310,1173,1199]" pageId="1" pageNumber="46">
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(
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<figureCitation id="51B177AAFFFBFFF2C1EAFB63E33EFB08" box="[159,300,1173,1199]" captionStart-0="FIGURE 1" captionStart-1="FIGURE 2" captionStart-2="FIGURE 3" captionStart-3="FIGURE 4" captionStart-4="FIGURE 5" captionStartId-0="2.[151,255,1774,1798]" captionStartId-1="3.[151,255,1738,1762]" captionStartId-2="4.[151,255,1092,1116]" captionStartId-3="5.[151,255,1450,1474]" captionStartId-4="6.[151,255,1523,1547]" captionTargetBox-0="[203,1395,200,1745]" captionTargetBox-1="[237,1390,194,1721]" captionTargetBox-2="[223,1374,187,1051]" captionTargetBox-3="[244,1352,194,1433]" captionTargetBox-4="[377,1166,864,1496]" captionTargetId-0="figure@2.[188,1398,194,1750]" captionTargetId-1="figure@3.[195,1392,194,1722]" captionTargetId-2="figure@4.[204,1382,170,1068]" captionTargetId-3="figure@5.[235,1352,194,1445]" captionTargetId-4="figure@6.[370,1219,858,1521]" captionTargetPageId-0="2" captionTargetPageId-1="3" captionTargetPageId-2="4" captionTargetPageId-3="5" captionTargetPageId-4="6" captionText-0="FIGURE 1. Ampelisca mississippiana sp. nov.: female, 5.6 mm, holotype. Mississippi Canyon (28 32 ' 30.7 " N, 89 49 ' 43.9 " W)." captionText-1="FIGURE 2. Ampelisca mississippiana sp. nov.: female, 5.6 mm, holotype. Mississippi Canyon (28 32 ' 30.7 " N, 89 49 ' 43.9 " W)." captionText-2="FIGURE 3. Ampelisca mississippiana sp. nov.: female, 5.6 mm, holotype. Mississippi Canyon (28 32 ' 30.7 " N, 89 49 ' 43.9 " W)." captionText-3="FIGURE 4. Ampelisca mississippiana sp. nov.: Male, 5.4 mm. Mississippi Canyon (28 32 ' 30.7 " N, 89 49 ' 43.9 " W)." captionText-4="FIGURE 5. Heads of the ampeliscid species (A) A. mississippiana; (B) A. uncinata; (C) A. mexicana; (D) A. pugetica." httpUri-0="https://zenodo.org/record/175194/files/figure.png" httpUri-1="https://zenodo.org/record/175195/files/figure.png" httpUri-2="https://zenodo.org/record/175196/files/figure.png" httpUri-3="https://zenodo.org/record/175197/files/figure.png" httpUri-4="https://zenodo.org/record/175198/files/figure.png" pageId="1" pageNumber="46">Figures 1–5</figureCitation>
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)
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</paragraph>
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</subSubSection>
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<subSubSection id="819038A4FFFBFFF2C1E2FB13E3DCF998" pageId="1" pageNumber="46" type="materials_examined">
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<paragraph id="C9356B2FFFFBFFF2C1E2FB13E1D2FAE8" blockId="1.[151,1437,1253,1999]" pageId="1" pageNumber="46">
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<emphasis id="FBFEB73DFFFBFFF2C1E2FB13E39EFB58" bold="true" box="[151,396,1253,1279]" pageId="1" pageNumber="46">Material examined.</emphasis>
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<emphasis id="FBFEB73DFFFBFFF2C0E1FB13E012FB59" box="[404,512,1253,1278]" italics="true" pageId="1" pageNumber="46">
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<typeStatus id="1631D58DFFFBFFF2C0E1FB13E012FB59" box="[404,512,1253,1278]" pageId="1" pageNumber="46" type="holotype">Holotype</typeStatus>
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</emphasis>
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: Adult female; TL
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<quantity id="0E72C6CAFFFBFFF2C393FB13E157FB58" box="[742,837,1253,1279]" metricMagnitude="-3" metricUnit="m" metricValue="5.6" pageId="1" pageNumber="46" unit="mm" value="5.6">5.6 mm</quantity>
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. Northern Gulf of
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<collectingCountry id="B19D2BBFFFFBFFF2C554FB13E66FFB58" box="[1057,1149,1253,1279]" name="Mexico" pageId="1" pageNumber="46">Mexico</collectingCountry>
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, head of the Mississippi Canyon (28 32' 30.7" N, 89 49' 43.9" W),
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<quantity id="0E72C6CAFFFBFFF2C3E9FAFBE0FEFA80" box="[668,748,1293,1319]" metricMagnitude="2" metricUnit="m" metricValue="4.8" pageId="1" pageNumber="46" unit="m" value="480.0">480 m</quantity>
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, muddy bottom (approximately 73% clay, 25.5% silt and 1.5% sand),
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<date id="BD344DEFFFFBFFF2C05CFAC3E3DAFAE8" box="[297,456,1333,1359]" pageId="1" pageNumber="46" value="2000-06-17">17 June 2000</date>
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, R.V.
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<emphasis id="FBFEB73DFFFBFFF2C37AFAC3E05AFAE9" box="[527,584,1333,1358]" italics="true" pageId="1" pageNumber="46">Gyre</emphasis>
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. DGoMB station MT1,
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<collectionCode id="AF9BF3EAFFFBFFF2C216FAC3E1A9FAE8" LSID="urn:lsid:biocol.org:col:34871" box="[867,955,1333,1359]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="1" pageNumber="46">USNM</collectionCode>
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.
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</paragraph>
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<paragraph id="C9356B2FFFFBFFF2C1B3FAABE2CAFA48" blockId="1.[151,1437,1253,1999]" pageId="1" pageNumber="46">
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<emphasis id="FBFEB73DFFFBFFF2C1B3FAABE32FFAD1" box="[198,317,1373,1398]" italics="true" pageId="1" pageNumber="46">
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<typeStatus id="1631D58DFFFBFFF2C1B3FAABE32FFAD1" box="[198,317,1373,1398]" pageId="1" pageNumber="46" type="paratype">Paratypes</typeStatus>
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</emphasis>
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:
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<specimenCount id="DF8CA0A6FFFBFFF2C034FAABE3DEFAD0" box="[321,460,1373,1399]" pageId="1" pageNumber="46" type="female">10 females</specimenCount>
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. Mississippi Canyon (28 32' 6.6" N, 89 49' 32.2" W),
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<quantity id="0E72C6CAFFFBFFF2C511FAABE6A7FAD0" box="[1124,1205,1373,1399]" metricMagnitude="2" metricUnit="m" metricValue="4.9799999999999995" pageId="1" pageNumber="46" unit="m" value="498.0">498 m</quantity>
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,
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<date id="BD344DEFFFFBFFF2C5B6FAABE74BFAD0" box="[1219,1369,1373,1399]" pageId="1" pageNumber="46" value="2001-06-02">2 June 2001</date>
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, R.V.
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<emphasis id="FBFEB73DFFFBFFF2C1E2FA73E2C3FA39" box="[151,209,1413,1438]" italics="true" pageId="1" pageNumber="46">Gyre</emphasis>
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. DGoMB sta. MT1,
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<collectionCode id="AF9BF3EAFFFBFFF2C0B0FA73E00FFA38" LSID="urn:lsid:biocol.org:col:34871" box="[453,541,1413,1439]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="1" pageNumber="46">USNM</collectionCode>
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.
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<specimenCount id="DF8CA0A6FFFBFFF2C35DFA73E0BEFA38" box="[552,684,1413,1439]" pageId="1" pageNumber="46" type="female">15 females</specimenCount>
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. Mississippi Canyon, 28 33' 12.1" N, 89 49' 18.5" W,
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<date id="BD344DEFFFFBFFF2C457FA73E2C6FA60" pageId="1" pageNumber="46" value="2002-08-13">
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13 August
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<quantity id="0E72C6CAFFFBFFF2C1E2FA5BE2C6FA60" box="[151,212,1453,1479]" metricMagnitude="6" metricUnit="m" metricValue="2.002476" pageId="1" pageNumber="46" unit="m" value="2002476.0">2002</quantity>
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</date>
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, 476 m, R.V.
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<emphasis id="FBFEB73DFFFBFFF2C00CFA5BE3A1FA61" box="[377,435,1453,1478]" italics="true" pageId="1" pageNumber="46">Gyre</emphasis>
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,
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<collectionCode id="AF9BF3EAFFFBFFF2C0B6FA5BE00EFA60" LSID="urn:lsid:biocol.org:col:34871" box="[451,540,1453,1479]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="1" pageNumber="46">USNM</collectionCode>
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.
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<specimenCount id="DF8CA0A6FFFBFFF2C35DFA5BE0BFFA60" box="[552,685,1453,1479]" pageId="1" pageNumber="46" type="female">16 females</specimenCount>
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. Same location, date and depth as
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<typeStatus id="1631D58DFFFBFFF2C53CFA5BE6A1FA60" box="[1097,1203,1453,1479]" pageId="1" pageNumber="46" type="holotype">holotype</typeStatus>
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.
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<collectionCode id="AF9BF3EAFFFBFFF2C5B5FA5BE707FA60" box="[1216,1301,1453,1479]" httpUri="http://grbio.org/cool/dj6p-xxc3" name="Texas Cooperative Wildlife Collection" pageId="1" pageNumber="46">TCWC</collectionCode>
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cat. No. 2 9119.
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</paragraph>
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<paragraph id="C9356B2FFFFBFFF2C1B3FA0BE3DCF998" blockId="1.[151,1437,1253,1999]" pageId="1" pageNumber="46">
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<emphasis id="FBFEB73DFFFBFFF2C1B3FA0BE367F9B1" box="[198,373,1533,1558]" italics="true" pageId="1" pageNumber="46">Other material</emphasis>
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: Approximately 300 individuals, including
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<specimenCount id="DF8CA0A6FFFBFFF2C200FA0BE1C1F9B0" box="[885,979,1533,1559]" pageId="1" pageNumber="46" type="male">3 males</specimenCount>
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, same collecting locations, under study at Texas A&M University.
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</paragraph>
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</subSubSection>
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<subSubSection id="819038A4FFFBFFF2C1B3F9BBE30EF928" pageId="1" pageNumber="46" type="etymology">
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<paragraph id="C9356B2FFFFBFFF2C1B3F9BBE30EF928" blockId="1.[151,1437,1253,1999]" pageId="1" pageNumber="46">
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<emphasis id="FBFEB73DFFFBFFF2C1B3F9BBE341F9C0" bold="true" box="[198,339,1613,1639]" pageId="1" pageNumber="46">Etymology.</emphasis>
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The name of the species refers to the Mississippi Canyon, where the specimens are found in abundance.
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</paragraph>
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</subSubSection>
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<subSubSection id="819038A4FFFBFFF5C1B3F96BE3F2FC95" lastPageId="6" lastPageNumber="51" pageId="1" pageNumber="46" type="description">
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<paragraph id="C9356B2FFFFBFFF2C1B3F96BE381F868" blockId="1.[151,1437,1253,1999]" pageId="1" pageNumber="46">
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<emphasis id="FBFEB73DFFFBFFF2C1B3F96BE34CF910" bold="true" box="[198,350,1693,1719]" pageId="1" pageNumber="46">Description.</emphasis>
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Female TL
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<quantity id="0E72C6CAFFFBFFF2C087F96BE043F910" box="[498,593,1693,1719]" metricMagnitude="-3" metricUnit="m" metricValue="5.6" pageId="1" pageNumber="46" unit="mm" value="5.6">5.6 mm</quantity>
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. Body smooth and rather colorless. Head broad, longer than deep, subequal in length to first 3 body segments, projecting anterodorsally above antenna 1. Distal margin concave. Lower front edge oblique, convexly curved posteriorly. Anteroventral margin with short setae. Corneal lenses absent, ganglia of eyes easily visible under cuticle. Antenna 1 very short and slender, shorter than antenna 2 peduncle, article 1 robust. Peduncular article 2 long, about 1.5x length of article 1. Article 2 slimmer than article 1. Flagellum with 79 articles. Antenna 2 as long as body or longer depending on age of specimen. Peduncle long and slender. Peduncle article 4 about same length as article 5. Flagellum with up to 19 articles. Flagellum setae long.
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</paragraph>
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<caption id="9DF53BA7FFF8FFF1C1E2F918E312F88F" httpUri="https://zenodo.org/record/175194/files/figure.png" pageId="2" pageNumber="47" targetBox="[203,1395,200,1745]" targetPageId="2">
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<paragraph id="C9356B2FFFF8FFF1C1E2F918E312F88F" blockId="2.[151,1437,1774,1832]" pageId="2" pageNumber="47">
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<emphasis id="FBFEB73DFFF8FFF1C1E2F918E309F8A1" bold="true" box="[151,283,1774,1798]" pageId="2" pageNumber="47">FIGURE 1.</emphasis>
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<taxonomicName id="0E8A10ACFFF8FFF1C051F918E02AF8A2" box="[292,568,1774,1797]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="2" pageNumber="47" phylum="Arthropoda" rank="species" species="mississippiana" status="sp. nov.">
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<emphasis id="FBFEB73DFFF8FFF1C051F918E02AF8A2" box="[292,568,1774,1797]" italics="true" pageId="2" pageNumber="47">Ampelisca mississippiana</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="E0CD0A46FFF8FFF1C334F918E08BF8A2" box="[577,665,1774,1797]" pageId="2" pageNumber="47" rank="species">sp. nov.</taxonomicNameLabel>
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: female, 5.6mm, holotype. Mississippi Canyon (28 32' 30.7" N, 89 49' 43.9" W).
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</paragraph>
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</caption>
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<paragraph id="C9356B2FFFF8FFF1C1B3F8ADE356F83A" blockId="2.[151,1434,1883,2029]" pageId="2" pageNumber="47">Mandible with spine row with 8 spines. Palp triarticulate, article 2 longer than either article 1 or 3, slen der and setose.</paragraph>
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<paragraph id="C9356B2FFFF8FFF1C1B3F85DE6A1F84A" blockId="2.[151,1434,1883,2029]" pageId="2" pageNumber="47">Maxilla 1 with inner lobe conical, ending apically with 1 long seta. Outer plate with 9 spines. Palp biarticulate, second article with 4 distal sharp cusps, 4 spines and 6 setae. Maxilla 2 normal.</paragraph>
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<caption id="9DF53BA7FFF9FFF0C1E2F93CE312F8A4" httpUri="https://zenodo.org/record/175195/files/figure.png" pageId="3" pageNumber="48" targetBox="[237,1390,194,1721]" targetPageId="3">
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||
<paragraph id="C9356B2FFFF9FFF0C1E2F93CE312F8A4" blockId="3.[151,1437,1738,1795]" pageId="3" pageNumber="48">
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<emphasis id="FBFEB73DFFF9FFF0C1E2F93CE309F945" bold="true" box="[151,283,1738,1762]" pageId="3" pageNumber="48">FIGURE 2.</emphasis>
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<taxonomicName id="0E8A10ACFFF9FFF0C051F93CE02AF946" box="[292,568,1738,1761]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="3" pageNumber="48" phylum="Arthropoda" rank="species" species="mississippiana" status="sp. nov.">
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<emphasis id="FBFEB73DFFF9FFF0C051F93CE02AF946" box="[292,568,1738,1761]" italics="true" pageId="3" pageNumber="48">Ampelisca mississippiana</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="E0CD0A46FFF9FFF0C334F93CE08BF946" box="[577,665,1738,1761]" pageId="3" pageNumber="48" rank="species">sp. nov.</taxonomicNameLabel>
|
||
: female, 5.6mm, holotype. Mississippi Canyon (28 32' 30.7" N, 89 49' 43.9" W).
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="C9356B2FFFF9FFF0C1B3F8C1E75DF806" blockId="3.[151,1434,1847,2033]" pageId="3" pageNumber="48">Maxilliped with inner plate reaching to the end of palp article 1 and with several plumose setae; outer plate reaching to end of palp article 2, inner margin of outer plate lined with 8 chisel teeth, round apex with 5 setal spines, outermost two plumose. Palp with four articles, article 4 with nail as long as rest of article.</paragraph>
|
||
<paragraph id="C9356B2FFFF9FFF0C1B3F859E6C6F856" blockId="3.[151,1434,1847,2033]" pageId="3" pageNumber="48">Coxae 14 longer than broad. Coxal plate 1 expanded and rounded distally. Coxae 1 and 2 lower posterior angle with slit and bearing plumose setae on lower margin with row of setae overlying them.</paragraph>
|
||
<caption id="9DF53BA7FFFEFFF7C1E2FBB2E312FBD9" httpUri="https://zenodo.org/record/175196/files/figure.png" pageId="4" pageNumber="49" targetBox="[223,1374,187,1051]" targetPageId="4">
|
||
<paragraph id="C9356B2FFFFEFFF7C1E2FBB2E312FBD9" blockId="4.[151,1437,1092,1150]" pageId="4" pageNumber="49">
|
||
<emphasis id="FBFEB73DFFFEFFF7C1E2FBB2E309FBFB" bold="true" box="[151,283,1092,1116]" pageId="4" pageNumber="49">FIGURE 3.</emphasis>
|
||
<taxonomicName id="0E8A10ACFFFEFFF7C051FBB2E02AFBFC" box="[292,568,1092,1115]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="4" pageNumber="49" phylum="Arthropoda" rank="species" species="mississippiana" status="sp. nov.">
|
||
<emphasis id="FBFEB73DFFFEFFF7C051FBB2E02AFBFC" box="[292,568,1092,1115]" italics="true" pageId="4" pageNumber="49">Ampelisca mississippiana</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="E0CD0A46FFFEFFF7C335FBB2E08BFBFC" box="[576,665,1092,1115]" pageId="4" pageNumber="49" rank="species">sp. nov.</taxonomicNameLabel>
|
||
: female, 5.6mm, holotype. Mississippi Canyon (28 32' 30.7" N, 89 49' 43.9" W).
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="C9356B2FFFFEFFF7C1B3FB44E344FAE3" blockId="4.[151,1436,1202,2028]" pageId="4" pageNumber="49">Gnathopod 1 simple and linear, shorter than gnathopod 2; basis long, ischium and merus short, carpus slightly longer than propodus; dactylus shorter than propodus, arched, and bearing several setules along inferior margin and one seta on outer margin; palmar portion weakly developed; armed with sets of comb spines and setal spines.</paragraph>
|
||
<paragraph id="C9356B2FFFFEFFF7C1B3FAA4E195FA1B" blockId="4.[151,1436,1202,2028]" pageId="4" pageNumber="49">Gnathopod 2 very slender, longer than gnathopod 1, carpus more than 1.5 times as long as propodus, with heavy sets of setae on distal margin; propodus heavily covered with spinose setae; dactylus about twothirds of propodus, slightly curved with simple setae on flexor margin.</paragraph>
|
||
<paragraph id="C9356B2FFFFEFFF7C1B3FA3CE111F90B" blockId="4.[151,1436,1202,2028]" pageId="4" pageNumber="49">Pereopod 3 and pereopod 4 almost similar. Pereopod 3 merus longer than carpus and propodus combined. Both merus and carpus bearing few long spinose setae at distal anterior margin; carpus with 1 seta on extensor surface; propodus with few simple setae on the extensor surface; dactylus very long and slender, almost straight and significantly longer than both propodus and carpus combined. Pereopod 4 coxa rectangular with rounded distal corner. Pereopod 4 similar to pereopod 3 but with much longer merus and with setae on both sides; distal anterior edge of the merus not produced.</paragraph>
|
||
<paragraph id="C9356B2FFFFEFFF7C1B3F94CE346F8EB" blockId="4.[151,1436,1202,2028]" pageId="4" pageNumber="49">Pereopod 5 with basis having anterior margin fringed with plumose setae, posterior margin with rounded lobe. Carpus slightly longer and broader than propodus and endowed with set of 45 comb spines and two short spines, posterior margin with 2 sets of short spines. Propodus with very long setae on the distal end; dactylus very short.</paragraph>
|
||
<paragraph id="C9356B2FFFFEFFF7C1B3F8ACE76EF84B" blockId="4.[151,1436,1202,2028]" pageId="4" pageNumber="49">Pereopod 6 with basis roughly rectangular, anterior margin with 3 plumose setae and several spines, posterior margin rounded without any ornamentation. Carpus slightly longer than propodus, anterior margin with several spines, and 2 sets of spines on lateral surface, distal margin with long set of 45 comb spines and two short spines. Propodus less broad than carpus, with several spines on anterior margin. Dactylus very short.</paragraph>
|
||
<caption id="9DF53BA7FFFFFFF6C1E2FA5CE762FA65" box="[151,1392,1450,1474]" httpUri="https://zenodo.org/record/175197/files/figure.png" pageId="5" pageNumber="50" targetBox="[244,1352,194,1433]" targetPageId="5">
|
||
<paragraph id="C9356B2FFFFFFFF6C1E2FA5CE762FA65" blockId="5.[151,1392,1450,1474]" box="[151,1392,1450,1474]" pageId="5" pageNumber="50">
|
||
<emphasis id="FBFEB73DFFFFFFF6C1E2FA5CE30BFA65" bold="true" box="[151,281,1450,1474]" pageId="5" pageNumber="50">FIGURE 4.</emphasis>
|
||
<taxonomicName id="0E8A10ACFFFFFFF6C055FA5DE020FA65" box="[288,562,1451,1474]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="5" pageNumber="50" phylum="Arthropoda" rank="species" species="mississippiana" status="sp. nov.">
|
||
<emphasis id="FBFEB73DFFFFFFF6C055FA5DE020FA65" box="[288,562,1451,1474]" italics="true" pageId="5" pageNumber="50">Ampelisca mississippiana</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="E0CD0A46FFFFFFF6C34CFA5DE09DFA65" box="[569,655,1451,1474]" pageId="5" pageNumber="50" rank="species">sp. nov.</taxonomicNameLabel>
|
||
: Male, 5.4mm. Mississippi Canyon (28 32' 30.7" N, 89 49' 43.9" W).
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="C9356B2FFFFFFFF6C1B3FA03E602F958" blockId="5.[151,1434,1525,2031]" pageId="5" pageNumber="50">Pereopod 7 with basis straight, anterior margin with few short spines and rounded posteriorly, inferior margin of posterior lobe of basis expanded distally, passing distal end of ischium, distal margin fringed with plumose setae. Ischium longer than merus. Merus with large posterior setose lobe produced along entire margin of carpus, fringed by long plumose setae, anterior lobe slightly produced along anterior margin of carpus with 1 spine at blunt apex. Carpus with anterior edge slightly produced and notched. Propodus attached to posterior proximal portion of carpus, with notched distal anterior margin. Carpus and dactylus shorter than propodus. Dactylus broad at base and tapering distally, not curving forward.</paragraph>
|
||
<paragraph id="C9356B2FFFFFFFF6C1B3F8FBE6F2F8E8" blockId="5.[151,1434,1525,2031]" pageId="5" pageNumber="50">Epimeral plate 1 rounded with spine at distal margin and plumose setae at posterior margin. Epimeral plate 2 with inferior margin rounded. Epimeral plate 3 posteroventral corner with acute spine.</paragraph>
|
||
<paragraph id="C9356B2FFFFFFFF6C1B3F8ABE0D1F838" blockId="5.[151,1434,1525,2031]" pageId="5" pageNumber="50">Pleon segment 3 with posterior margin slightly convex, lower posterior margin produced into large acute tooth. Dorsal surface of segment with 2 setules.</paragraph>
|
||
<paragraph id="C9356B2FFFFFFFF5C1B3F85BE31CFF15" blockId="5.[151,1434,1525,2031]" lastBlockId="6.[151,1438,152,818]" lastPageId="6" lastPageNumber="51" pageId="5" pageNumber="50">Pleon segment 4 dorsal surface with prominent wedgeshaped dorsal carina ending acutely above segment 5 and bearing 2 setae at top. Pleon segment 6 with shallow lateral crests. Pleon segments from 1 to 6 with pair of setules.</paragraph>
|
||
<paragraph id="C9356B2FFFFCFFF5C1B3FF36E14AFEA5" blockId="6.[151,1438,152,818]" pageId="6" pageNumber="51">Uropod 1 reaching as far as midrami of uropod 2, rami as long as peduncle, outer and inner rami equal. Inner ramus with 34 spines while outer ramus with 1 spine.</paragraph>
|
||
<paragraph id="C9356B2FFFFCFFF5C1B3FEE6E68DFEF5" blockId="6.[151,1438,152,818]" pageId="6" pageNumber="51">Uropod 2 with inner ramus slightly longer than outer ramus. Inner margin of inner ramus and outer margin of outer ramus spinulate. Outer rami with very long subterminal robust toothed seta.</paragraph>
|
||
<paragraph id="C9356B2FFFFCFFF5C1B3FE96E3F2FE6D" blockId="6.[151,1438,152,818]" pageId="6" pageNumber="51">Uropod 3 with peduncle strong, with 3 spines; rami equal in length, long, slender, lanceolate; outer ramus more slender than inner, broadest at proximal end, apical outer margin of inner ramus and inner margin of outer ramus strongly setose.</paragraph>
|
||
<paragraph id="C9356B2FFFFCFFF5C1B3FE2EE70FFDBD" blockId="6.[151,1438,152,818]" pageId="6" pageNumber="51">Telson longer than broad, deeply cleft for more than 70% of length; distal margin acute, apices of lobes with 12 setae, strongly notched on outer ridge, and dorsal surface of each lobe with 12 fine setae.</paragraph>
|
||
<paragraph id="C9356B2FFFFCFFF5C1B3FDDEE3F2FC95" blockId="6.[151,1438,152,818]" pageId="6" pageNumber="51">
|
||
Male TL
|
||
<quantity id="0E72C6CAFFFCFFF5C043FDDEE387FDE5" box="[310,405,552,578]" metricMagnitude="-3" metricUnit="m" metricValue="5.5" pageId="6" pageNumber="51" unit="mm" value="5.5">5.5 mm</quantity>
|
||
. Male resembles female in shape of head and length of antennae, differing from female in characters usually sexually dimorphic as follows: presence of setal tufts on peduncle of antennae 1 and 2, gnathopod 1 propodus with palm strongly developed, armed with spines and spinose setae on palmar side. Spinose setae on Gn1 and Gn2 generally are much heavier in male. Hump on pleon segment 4 more prominent than in female. Dorsal surfaces of pleon segment 3 and pleon segment 4 cristate. Lateral surfaces of pereopod 7 basis with short plumose setae, uropod 3 with apical outer margin of inner ramus and inner margin of outer ramus strongly setose.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<caption id="9DF53BA7FFFCFFF5C1E2FA05E799F9AC" box="[151,1419,1523,1547]" httpUri="https://zenodo.org/record/175198/files/figure.png" pageId="6" pageNumber="51" targetBox="[377,1166,864,1496]" targetPageId="6">
|
||
<paragraph id="C9356B2FFFFCFFF5C1E2FA05E799F9AC" blockId="6.[151,1419,1523,1547]" box="[151,1419,1523,1547]" pageId="6" pageNumber="51">
|
||
<emphasis id="FBFEB73DFFFCFFF5C1E2FA05E30BF9AC" bold="true" box="[151,281,1523,1547]" pageId="6" pageNumber="51">FIGURE 5.</emphasis>
|
||
Heads of the ampeliscid species (A)
|
||
<taxonomicName id="0E8A10ACFFFCFFF5C3D3FA02E172F9AC" box="[678,864,1524,1547]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="6" pageNumber="51" phylum="Arthropoda" rank="species" species="mississippiana">
|
||
<emphasis id="FBFEB73DFFFCFFF5C3D3FA02E172F9AC" box="[678,864,1524,1547]" italics="true" pageId="6" pageNumber="51">A.mississippiana</emphasis>
|
||
</taxonomicName>
|
||
; (B)
|
||
<taxonomicName id="0E8A10ACFFFCFFF5C2ECFA02E606F9AC" box="[921,1044,1524,1547]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="6" pageNumber="51" phylum="Arthropoda" rank="species" species="uncinata">
|
||
<emphasis id="FBFEB73DFFFCFFF5C2ECFA02E606F9AC" box="[921,1044,1524,1547]" italics="true" pageId="6" pageNumber="51">A. uncinata</emphasis>
|
||
</taxonomicName>
|
||
; (C)
|
||
<taxonomicName id="0E8A10ACFFFCFFF5C539FA02E6C2F9AC" box="[1100,1232,1524,1547]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="6" pageNumber="51" phylum="Arthropoda" rank="species" species="mexicana">
|
||
<emphasis id="FBFEB73DFFFCFFF5C539FA02E6C2F9AC" box="[1100,1232,1524,1547]" italics="true" pageId="6" pageNumber="51">A. mexicana</emphasis>
|
||
</taxonomicName>
|
||
; (D)
|
||
<taxonomicName id="0E8A10ACFFFCFFF5C47FFA02E796F9AC" box="[1290,1412,1524,1547]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="6" pageNumber="51" phylum="Arthropoda" rank="species" species="pugetica">
|
||
<emphasis id="FBFEB73DFFFCFFF5C47FFA02E796F9AC" box="[1290,1412,1524,1547]" italics="true" pageId="6" pageNumber="51">A. pugetica</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
</caption>
|
||
<subSubSection id="819038A4FFFCFFFBC1B3F9C8E63DFB63" lastPageId="8" lastPageNumber="53" pageId="6" pageNumber="51" type="discussion">
|
||
<paragraph id="C9356B2FFFFCFFF5C1B3F9C8E339F84E" blockId="6.[151,1437,1598,2025]" pageId="6" pageNumber="51">
|
||
<emphasis id="FBFEB73DFFFCFFF5C1B3F9C8E32DF9FF" bold="true" box="[198,319,1598,1624]" pageId="6" pageNumber="51">Remarks.</emphasis>
|
||
The new species resembles the northwestern Atlantic species
|
||
<taxonomicName id="0E8A10ACFFFCFFF5C562F9C9E685F9FF" box="[1047,1175,1599,1624]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="6" pageNumber="51" phylum="Arthropoda" rank="species" species="uncinata">
|
||
<emphasis id="FBFEB73DFFFCFFF5C562F9C9E685F9FF" box="[1047,1175,1599,1624]" italics="true" pageId="6" pageNumber="51">A uncinata</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="0E8A10ACFFFCFFF5C5D0F9C9E71BF9FF" box="[1189,1289,1599,1624]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="6" pageNumber="51" phylum="Arthropoda" rank="species" species="gibba">
|
||
<emphasis id="FBFEB73DFFFCFFF5C5D0F9C9E71BF9FF" box="[1189,1289,1599,1624]" italics="true" pageId="6" pageNumber="51">A. gibba</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="0E8A10ACFFFCFFF5C462F9C9E78EF9FF" box="[1303,1436,1599,1624]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="6" pageNumber="51" phylum="Arthropoda" rank="species" species="pugetica">
|
||
<emphasis id="FBFEB73DFFFCFFF5C462F9C9E78EF9FF" box="[1303,1436,1599,1624]" italics="true" pageId="6" pageNumber="51">A. pugetica</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="0E8A10ACFFFCFFF5C1BDF991E34BF927" box="[200,345,1639,1664]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="6" pageNumber="51" phylum="Arthropoda" rank="species" species="mexicana">
|
||
<emphasis id="FBFEB73DFFFCFFF5C1BDF991E34BF927" box="[200,345,1639,1664]" italics="true" pageId="6" pageNumber="51">A. mexicana</emphasis>
|
||
</taxonomicName>
|
||
. These resemble the new species in the length of antenna 2 that is almost equal to or exceeds the length of the body, antenna 1 shorter than antenna 2, large posterior lobe of the merus of pereopod 7, shape of pleon segment 3, and shape of uropod 3. However they differ from the new species in the shape of the head, presence or absence of corneal lenses, the relative lengths of antennae 1 segments, the shape of the segments of pereopods 7 and the shape of uropod 2. The species are compared in
|
||
<tableCitation id="84085E94FFFCFFF5C297F8F1E628F886" box="[994,1082,1799,1825]" captionStart="TABLE 1" captionStartId="7.[151,239,151,175]" captionTargetBox="[159,1428,242,1481]" captionTargetPageId="7" captionText="TABLE 1. Comparison between the major morphological characteristics of the new species A. mississippiana and other similar ampeliscids." httpUri="http://table.plazi.org/id/9DF53BA7FFFDFFF4C1E2FF61E37FFF76" pageId="6" pageNumber="51" tableUuid="9DF53BA7FFFDFFF4C1E2FF61E37FFF76">Table 1</tableCitation>
|
||
. Of these species,
|
||
<taxonomicName id="0E8A10ACFFFCFFF5C461F8F1E78FF887" box="[1300,1437,1799,1824]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="6" pageNumber="51" phylum="Arthropoda" rank="species" species="uncinata">
|
||
<emphasis id="FBFEB73DFFFCFFF5C461F8F1E78FF887" box="[1300,1437,1799,1824]" italics="true" pageId="6" pageNumber="51">A. uncinata</emphasis>
|
||
</taxonomicName>
|
||
most closely resembles
|
||
<taxonomicName id="0E8A10ACFFFCFFF5C0C6F8D9E090F8EF" box="[435,642,1839,1864]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="6" pageNumber="51" phylum="Arthropoda" rank="species" species="mississippiana">
|
||
<emphasis id="FBFEB73DFFFCFFF5C0C6F8D9E090F8EF" box="[435,642,1839,1864]" italics="true" pageId="6" pageNumber="51">A. mississippiana</emphasis>
|
||
</taxonomicName>
|
||
in lacking of corneal lenses. It differs from the new species in the shape of the head (
|
||
<figureCitation id="51B177AAFFFCFFF5C003F8A1E3ACF8D6" box="[374,446,1879,1905]" captionStart="FIGURE 5" captionStartId="6.[151,255,1523,1547]" captionTargetBox="[377,1166,864,1496]" captionTargetId="figure@6.[370,1219,858,1521]" captionTargetPageId="6" captionText="FIGURE 5. Heads of the ampeliscid species (A) A. mississippiana; (B) A. uncinata; (C) A. mexicana; (D) A. pugetica." httpUri="https://zenodo.org/record/175198/files/figure.png" pageId="6" pageNumber="51">Fig. 5</figureCitation>
|
||
), length of the carpus of pereopod 7 and absence of notched anterior edge from the same segment; shape of dactylus of pereopod 7, shape of the dorsal process of pleon segment 4, absence of subterminal robust long seta of uropod 2, and in having two setae instead of one on the apex of the inner lobe of maxilla 1.
|
||
</paragraph>
|
||
<caption id="9DF53BA7FFFDFFF4C1E2FF61E37FFF76" ID-Table-UUID="9DF53BA7FFFDFFF4C1E2FF61E37FFF76" httpUri="http://table.plazi.org/id/9DF53BA7FFFDFFF4C1E2FF61E37FFF76" pageId="7" pageNumber="52" targetBox="[159,1428,242,1481]" targetIsTable="true" targetPageId="7">
|
||
<paragraph id="C9356B2FFFFDFFF4C1E2FF61E37FFF76" blockId="7.[151,1436,151,209]" pageId="7" pageNumber="52">
|
||
<emphasis id="FBFEB73DFFFDFFF4C1E2FF61E318FF08" bold="true" box="[151,266,151,175]" pageId="7" pageNumber="52">TABLE 1.</emphasis>
|
||
Comparison between the major morphological characteristics of the new species
|
||
<taxonomicName id="0E8A10ACFFFDFFF4C500FF6EE722FF08" box="[1141,1328,152,175]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="52" phylum="Arthropoda" rank="species" species="mississippiana">
|
||
<emphasis id="FBFEB73DFFFDFFF4C500FF6EE722FF08" box="[1141,1328,152,175]" italics="true" pageId="7" pageNumber="52">A. mississippiana</emphasis>
|
||
</taxonomicName>
|
||
and other similar ampeliscids.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="C9356B2FFFFDFFF4C02AFF04E71DFA6E" pageId="7" pageNumber="52">
|
||
<table id="BB8A998FFFFD000CC1EAFF04E786FA6E" box="[159,1428,242,1481]" gridcols="5" gridrows="10" pageId="7" pageNumber="52">
|
||
<tr id="77BA696DFFFD000CC1EAFF04E786FEAE" box="[159,1428,242,265]" gridrow="0" pageId="7" pageNumber="52">
|
||
<th id="346B0011FFFD000CC1EAFF04E036FEAE" box="[159,548,242,265]" gridcol="0" gridrow="0" pageId="7" pageNumber="52">
|
||
<taxonomicName id="0E8A10ACFFFDFFF4C02AFF04E00BFEAE" box="[351,537,242,265]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="52" phylum="Arthropoda" rank="species" species="mississippiana">
|
||
<emphasis id="FBFEB73DFFFDFFF4C02AFF04E00BFEAE" box="[351,537,242,265]" italics="true" pageId="7" pageNumber="52">A. mississippiana</emphasis>
|
||
</taxonomicName>
|
||
</th>
|
||
<th id="346B0011FFFD000CC34FFF04E112FEAE" box="[570,768,242,265]" gridcol="1" gridrow="0" pageId="7" pageNumber="52">
|
||
<taxonomicName id="0E8A10ACFFFDFFF4C34FFF04E0A7FEAE" box="[570,693,242,265]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="52" phylum="Arthropoda" rank="species" species="uncinata">
|
||
<emphasis id="FBFEB73DFFFDFFF4C34FFF04E0A7FEAE" box="[570,693,242,265]" italics="true" pageId="7" pageNumber="52">A. uncinata</emphasis>
|
||
</taxonomicName>
|
||
</th>
|
||
<th id="346B0011FFFD000CC260FF04E1CBFEAE" box="[789,985,242,265]" gridcol="2" gridrow="0" pageId="7" pageNumber="52">
|
||
<taxonomicName id="0E8A10ACFFFDFFF4C260FF04E162FEAE" box="[789,880,242,265]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="52" phylum="Arthropoda" rank="species" species="gibba">
|
||
<emphasis id="FBFEB73DFFFDFFF4C260FF04E162FEAE" box="[789,880,242,265]" italics="true" pageId="7" pageNumber="52">A. gibba</emphasis>
|
||
</taxonomicName>
|
||
</th>
|
||
<th id="346B0011FFFD000CC285FF04E6A4FEAE" box="[1008,1206,242,265]" gridcol="3" gridrow="0" pageId="7" pageNumber="52">
|
||
<taxonomicName id="0E8A10ACFFFDFFF4C284FF04E666FEAE" box="[1009,1140,242,265]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="52" phylum="Arthropoda" rank="species" species="mexicana">
|
||
<emphasis id="FBFEB73DFFFDFFF4C284FF04E666FEAE" box="[1009,1140,242,265]" italics="true" pageId="7" pageNumber="52">A. mexicana</emphasis>
|
||
</taxonomicName>
|
||
</th>
|
||
<th id="346B0011FFFD000CC5BEFF04E786FEAE" box="[1227,1428,242,265]" gridcol="4" gridrow="0" pageId="7" pageNumber="52">
|
||
<taxonomicName id="0E8A10ACFFFDFFF4C5B9FF04E754FEAE" box="[1228,1350,242,265]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="52" phylum="Arthropoda" rank="species" species="pugetica">
|
||
<emphasis id="FBFEB73DFFFDFFF4C5B9FF04E754FEAE" box="[1228,1350,242,265]" italics="true" pageId="7" pageNumber="52">A. pugetica</emphasis>
|
||
</taxonomicName>
|
||
</th>
|
||
</tr>
|
||
<tr id="77BA696DFFFD000CC1EAFEEBE786FE18" box="[159,1428,285,447]" gridrow="1" pageId="7" pageNumber="52">
|
||
<th id="346B0011FFFD000CC1EAFEEBE036FE18" box="[159,548,285,447]" gridcol="0" gridrow="1" pageId="7" pageNumber="52">Sources Present study</th>
|
||
<td id="346B0011FFFD000CC34FFEEBE112FE18" box="[570,768,285,447]" gridcol="1" gridrow="1" pageId="7" pageNumber="52">Chevreux (1887, 1900), Mills (1976, 1971).</td>
|
||
<td id="346B0011FFFD000CC260FEEBE1CBFE18" box="[789,985,285,447]" gridcol="2" gridrow="1" pageId="7" pageNumber="52">Barnard (1960), Lincoln, (1979), Ruffo, (1982).</td>
|
||
<td id="346B0011FFFD000CC285FEEBE6A4FE18" box="[1008,1206,285,447]" gridcol="3" gridrow="1" pageId="7" pageNumber="52">Barnard (1954a& 1960)</td>
|
||
<td id="346B0011FFFD000CC5BEFEEBE786FE18" box="[1227,1428,285,447]" gridcol="4" gridrow="1" pageId="7" pageNumber="52">Barnard (1954a& 1960), Dickinson, (1982), Watling, (1995), Serejo et al (2000).</td>
|
||
</tr>
|
||
<tr id="77BA696DFFFD000CC1EAFE24E786FE4E" box="[159,1428,466,489]" gridrow="2" pageId="7" pageNumber="52">
|
||
<th id="346B0011FFFD000CC1EAFE24E036FE4E" box="[159,548,466,489]" gridcol="0" gridrow="2" pageId="7" pageNumber="52">Size 5–5.7 mm</th>
|
||
<td id="346B0011FFFD000CC34FFE24E112FE4E" box="[570,768,466,489]" gridcol="1" gridrow="2" pageId="7" pageNumber="52">6.5 mm</td>
|
||
<td id="346B0011FFFD000CC260FE24E1CBFE4E" box="[789,985,466,489]" gridcol="2" gridrow="2" pageId="7" pageNumber="52">7.5 mm</td>
|
||
<td id="346B0011FFFD000CC285FE24E6A4FE4E" box="[1008,1206,466,489]" gridcol="3" gridrow="2" pageId="7" pageNumber="52">5 mm</td>
|
||
<td id="346B0011FFFD000CC5BEFE24E786FE4E" box="[1227,1428,466,489]" gridcol="4" gridrow="2" pageId="7" pageNumber="52">911 mm</td>
|
||
</tr>
|
||
<tr id="77BA696DFFFD000CC1EAFE0BE786FDB3" box="[159,1428,509,532]" gridrow="3" pageId="7" pageNumber="52">
|
||
<th id="346B0011FFFD000CC1EAFE0BE036FDB3" box="[159,548,509,532]" gridcol="0" gridrow="3" pageId="7" pageNumber="52">Lenses Absent</th>
|
||
<td id="346B0011FFFD000CC34FFE0BE112FDB3" box="[570,768,509,532]" gridcol="1" gridrow="3" pageId="7" pageNumber="52">Absent</td>
|
||
<td id="346B0011FFFD000CC260FE0BE1CBFDB3" box="[789,985,509,532]" gridcol="2" gridrow="3" pageId="7" pageNumber="52">Present</td>
|
||
<td id="346B0011FFFD000CC285FE0BE6A4FDB3" box="[1008,1206,509,532]" gridcol="3" gridrow="3" pageId="7" pageNumber="52">Present</td>
|
||
<td id="346B0011FFFD000CC5BEFE0BE786FDB3" box="[1227,1428,509,532]" gridcol="4" gridrow="3" pageId="7" pageNumber="52">Present</td>
|
||
</tr>
|
||
<tr id="77BA696DFFFD000CC1EAFDDEE786FD4B" box="[159,1428,552,748]" gridrow="4" pageId="7" pageNumber="52">
|
||
<th id="346B0011FFFD000CC1EAFDDEE036FD4B" box="[159,548,552,748]" gridcol="0" gridrow="4" pageId="7" pageNumber="52">Antenna 1 (A1) A1 = art 4 of peduncle of A2, Peduncle. Article 2 = 1.5 x length of article 1. A2: art 4 = art 5.</th>
|
||
<td id="346B0011FFFD000CC34FFDDEE112FD4B" box="[570,768,552,748]" gridcol="1" gridrow="4" pageId="7" pageNumber="52">A1 <Peduncle of A2; Peduncle arti cle 2 = 1 to 1.5 x length of article 1. A2: art 4> art 5.</td>
|
||
<td id="346B0011FFFD000CC260FDDEE1CBFD4B" box="[789,985,552,748]" gridcol="2" gridrow="4" pageId="7" pageNumber="52">A1 = art 4 of peduncle of A2; Peduncle article 2 = 1.5 to 2.5 x length of article 1. A2: art 4 = art 5</td>
|
||
<td id="346B0011FFFD000CC285FDDEE6A4FD4B" box="[1008,1206,552,748]" gridcol="3" gridrow="4" pageId="7" pageNumber="52">A1 = peduncle of A2; Peduncle arti cle 2 = 1.3 x length of article1. A2: art 4 ˜ 1.3 x art 5.</td>
|
||
<td id="346B0011FFFD000CC5BEFDDEE786FD4B" box="[1227,1428,552,748]" gridcol="4" gridrow="4" pageId="7" pageNumber="52">A1 <peduncle of A2, Peduncle. Article 2 = 2 x length of article 1. A2: art 4 = art 5.</td>
|
||
</tr>
|
||
<tr id="77BA696DFFFD000CC1EAFCF6E786FC9E" box="[159,1428,768,825]" gridrow="5" pageId="7" pageNumber="52">
|
||
<th id="346B0011FFFD000CC1EAFCF6E036FC9E" box="[159,548,768,825]" gridcol="0" gridrow="5" pageId="7" pageNumber="52">Maxilla 1 Inner lobe apex with one long seta</th>
|
||
<td id="346B0011FFFD000CC34FFCF6E112FC9E" box="[570,768,768,825]" gridcol="1" gridrow="5" pageId="7" pageNumber="52">Inner lobe apex with two setae</td>
|
||
<td id="346B0011FFFD000CC260FCF6E1CBFC9E" box="[789,985,768,825]" gridcol="2" gridrow="5" pageId="7" pageNumber="52">Inner lobe apex with one seta</td>
|
||
<td id="346B0011FFFD000CC285FCF6E6A4FC9E" box="[1008,1206,768,825]" gridcol="3" gridrow="5" pageId="7" pageNumber="52">Inner lobe apex with two setae</td>
|
||
<td id="346B0011FFFD000CC5BEFCF6E786FC9E" box="[1227,1428,768,825]" gridcol="4" gridrow="5" pageId="7" pageNumber="52">Inner lobe apex with two setae</td>
|
||
</tr>
|
||
<tr id="77BA696DFFFD000CC1EAFCBBE786FC0E" box="[159,1428,845,937]" gridrow="6" pageId="7" pageNumber="52">
|
||
<th id="346B0011FFFD000CC1EAFCBBE036FC0E" box="[159,548,845,937]" gridcol="0" gridrow="6" pageId="7" pageNumber="52">Pleon segment 4 Wedgeshaped dorsal carina with two setae at top.</th>
|
||
<td id="346B0011FFFD000CC34FFCBBE112FC0E" box="[570,768,845,937]" gridcol="1" gridrow="6" pageId="7" pageNumber="52">Slightly elevated dorsal keel.</td>
|
||
<td id="346B0011FFFD000CC260FCBBE1CBFC0E" box="[789,985,845,937]" gridcol="2" gridrow="6" pageId="7" pageNumber="52">Angular dorsal keel.</td>
|
||
<td id="346B0011FFFD000CC285FCBBE6A4FC0E" box="[1008,1206,845,937]" gridcol="3" gridrow="6" pageId="7" pageNumber="52">Slightly elevated dorsal keel.</td>
|
||
<td id="346B0011FFFD000CC5BEFCBBE786FC0E" box="[1227,1428,845,937]" gridcol="4" gridrow="6" pageId="7" pageNumber="52">Saddleshaped dorsal carina.</td>
|
||
</tr>
|
||
<tr id="77BA696DFFFD000CC1EAFC4BE786FB03" box="[159,1428,957,1188]" gridrow="7" pageId="7" pageNumber="52">
|
||
<th id="346B0011FFFD000CC1EAFC4BE036FB03" box="[159,548,957,1188]" gridcol="0" gridrow="7" pageId="7" pageNumber="52">Pereopod 7 Iscium longer than merus. Carpus long (about twice as long as broad) and notched ante riorly. Dactylus straight.</th>
|
||
<td id="346B0011FFFD000CC34FFC4BE112FB03" box="[570,768,957,1188]" gridcol="1" gridrow="7" pageId="7" pageNumber="52">Iscium longer than merus. Carpus short (about as long as broad), without a notch. Dactylus curving into a fine point.</td>
|
||
<td id="346B0011FFFD000CC260FC4BE1CBFB03" box="[789,985,957,1188]" gridcol="2" gridrow="7" pageId="7" pageNumber="52">Ischium is shorter than merus. Carpus short (about as long as broad).</td>
|
||
<td id="346B0011FFFD000CC285FC4BE6A4FB03" box="[1008,1206,957,1188]" gridcol="3" gridrow="7" pageId="7" pageNumber="52">Ischium is shorter than merus. Car pus is very short, without a notch.</td>
|
||
<td id="346B0011FFFD000CC5BEFC4BE786FB03" box="[1227,1428,957,1188]" gridcol="4" gridrow="7" pageId="7" pageNumber="52">Ischium subequal in length to merus. Carpus long (about twice as long as broad) and notched anteriorly.</td>
|
||
</tr>
|
||
<tr id="77BA696DFFFD000CC1EAFB4EE786FA90" box="[159,1428,1208,1335]" gridrow="8" pageId="7" pageNumber="52">
|
||
<th id="346B0011FFFD000CC1EAFB4EE036FA90" box="[159,548,1208,1335]" gridcol="0" gridrow="8" pageId="7" pageNumber="52">Uropod 2 rami Unequal rami; outer ramus with subterminal long comb spine.</th>
|
||
<td id="346B0011FFFD000CC34FFB4EE112FA90" box="[570,768,1208,1335]" gridcol="1" gridrow="8" pageId="7" pageNumber="52">Unequal rami; outer ramus with out terminal seta.</td>
|
||
<td id="346B0011FFFD000CC260FB4EE1CBFA90" box="[789,985,1208,1335]" gridcol="2" gridrow="8" pageId="7" pageNumber="52">Equal to slightly subequal rami; outer ramus with long seta.</td>
|
||
<td id="346B0011FFFD000CC285FB4EE6A4FA90" box="[1008,1206,1208,1335]" gridcol="3" gridrow="8" pageId="7" pageNumber="52">Equal rami; apices of both armed with a single long spine.</td>
|
||
<td id="346B0011FFFD000CC5BEFB4EE786FA90" box="[1227,1428,1208,1335]" gridcol="4" gridrow="8" pageId="7" pageNumber="52">Equal rami, apex of outer ramus with a long spine.</td>
|
||
</tr>
|
||
<tr id="77BA696DFFFD000CC1EAFABCE786FA6E" box="[159,1428,1354,1481]" gridrow="9" pageId="7" pageNumber="52">
|
||
<th id="346B0011FFFD000CC1EAFABCE036FA6E" box="[159,548,1354,1481]" gridcol="0" gridrow="9" pageId="7" pageNumber="52">Telson Deeply cleft. Surface of each lobe with 12 setae.</th>
|
||
<td id="346B0011FFFD000CC34FFABCE112FA6E" box="[570,768,1354,1481]" gridcol="1" gridrow="9" pageId="7" pageNumber="52">Moderately cleft. Surface of each lobe with 4 setae.</td>
|
||
<td id="346B0011FFFD000CC260FABCE1CBFA6E" box="[789,985,1354,1481]" gridcol="2" gridrow="9" pageId="7" pageNumber="52">Deeply cleft. Surface of each lobe with 4 setae.</td>
|
||
<td id="346B0011FFFD000CC285FABCE6A4FA6E" box="[1008,1206,1354,1481]" gridcol="3" gridrow="9" pageId="7" pageNumber="52">Deeply cleft. Surface of each lobe with 3 setae.</td>
|
||
<td id="346B0011FFFD000CC5BEFABCE786FA6E" box="[1227,1428,1354,1481]" gridcol="4" gridrow="9" pageId="7" pageNumber="52">Moderately cleft. Surface of each lobe with 36 spines</td>
|
||
</tr>
|
||
</table>
|
||
</paragraph>
|
||
<paragraph id="C9356B2FFFFDFFFBC1B3F9ECE06FFEF5" blockId="7.[151,1437,1562,2028]" lastBlockId="8.[151,1439,152,1220]" lastPageId="8" lastPageNumber="53" pageId="7" pageNumber="52">
|
||
<emphasis id="FBFEB73DFFFDFFF4C1B3F9ECE343F993" bold="true" box="[198,337,1562,1588]" pageId="7" pageNumber="52">Discussion.</emphasis>
|
||
According to
|
||
<bibRefCitation id="AD1B16DEFFFDFFF4C089F9ECE15EF993" author="Barnard" box="[508,844,1562,1588]" pageId="7" pageNumber="54" refString="Barnard, J. L & J. D. Thomas (1989). A new species, Ampelisca burkei, (Crustacea: Amphipoda) from Florida. Proceedings of the Biological Society of Washington, 102, 375 - 384." type="journal article" year="1989">Barnard and Thomas (1989)</bibRefCitation>
|
||
, the
|
||
<taxonomicName id="0E8A10ACFFFDFFF4C2F1F9ECE637F993" box="[900,1061,1562,1588]" class="Malacostraca" family="Ampeliscidae" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="52" phylum="Arthropoda" rank="family">Ampeliscidae</taxonomicName>
|
||
is characterized by the extreme constancy of small morphological characters over wide geographic areas. Some of the species that are found in the Gulf of
|
||
<collectingCountry id="B19D2BBFFFFDFFF4C048F99CE384F923" box="[317,406,1642,1668]" name="Mexico" pageId="7" pageNumber="52">Mexico</collectingCountry>
|
||
are also known from the northeastern Pacific with few morphological differences (
|
||
<bibRefCitation id="AD1B16DEFFFDFFF4C412F99CE336F90B" author="Barnard" pageId="7" pageNumber="53" refString="Barnard, J. L. (1954 a) Amphipoda of the family Ampeliscidae collected by the Velero III in the Caribbean Sea. Allan Hancock Atlantic Expedition Report, 7, 1 - 13." type="journal article" year="1954" yearSuffix="a">Barnard, 1954a</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="AD1B16DEFFFDFFF4C045F964E3AEF90B" author="Mills" box="[304,444,1682,1708]" pageId="7" pageNumber="54" refString="Mills, E. I. (1965) The zoogeography of North Atlantic and North Pacific ampeliscid amphipod crustaceans. Systematic Zoology, 14, 119 - 130." type="journal article" year="1965">Mills, 1965</bibRefCitation>
|
||
).
|
||
<bibRefCitation id="AD1B16DEFFFDFFF4C0A5F964E083F90B" author="Barnard" box="[464,657,1682,1708]" pageId="7" pageNumber="53" refString="Barnard, J. L. (1954 a) Amphipoda of the family Ampeliscidae collected by the Velero III in the Caribbean Sea. Allan Hancock Atlantic Expedition Report, 7, 1 - 13." type="journal article" year="1954" yearSuffix="a">Barnard (1954a)</bibRefCitation>
|
||
examined the ampeliscids from the Caribbean Sea and the Gulf of
|
||
<collectingCountry id="B19D2BBFFFFDFFF4C1E2F94CE2E6F973" box="[151,244,1722,1748]" name="Mexico" pageId="7" pageNumber="52">Mexico</collectingCountry>
|
||
, and compared them with those from northeastern Pacific (
|
||
<bibRefCitation id="AD1B16DEFFFDFFF4C2C5F94CE675F973" author="Barnard" box="[944,1127,1722,1748]" pageId="7" pageNumber="53" refString="Barnard, J. L. (1954 b) Amphipoda of the family Ampeliscidae collected in the eastern Pacific Ocean by the Velero III and Velero IV. Allan Hancock Pacific Expedition Report, 18, 1 - 137." type="journal article" year="1954" yearSuffix="b">Barnard 1954b</bibRefCitation>
|
||
). He found that the differences in the ornamentation of pleon segment 4 for at least 12 species were not enough to separate them as new species. This close relationship between the morphological characters of the northeastern Pacific ampeliscids and those from the northwestern Atlantic was confirmed by
|
||
<bibRefCitation id="AD1B16DEFFFDFFF4C229F8C4E1E1F8EB" author="Mills" box="[860,1011,1842,1868]" pageId="7" pageNumber="54" refString="Mills, E. I. (1965) The zoogeography of North Atlantic and North Pacific ampeliscid amphipod crustaceans. Systematic Zoology, 14, 119 - 130." type="journal article" year="1965">Mills (1965)</bibRefCitation>
|
||
. His work related this affinity in the morphological characters to common ancestors that had an amphiAmerican distribution before the rising of the Central American isthmus. One of those supposed amphiAmerican species,
|
||
<taxonomicName id="0E8A10ACFFFDFFF4C525F875E785F83B" authority="Barnard, 1954" authorityName="Barnard" authorityYear="1954" box="[1104,1431,1922,1948]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="52" phylum="Arthropoda" rank="species" species="cristoides">
|
||
<emphasis id="FBFEB73DFFFDFFF4C525F875E6F6F83B" box="[1104,1252,1923,1948]" italics="true" pageId="7" pageNumber="52">A. cristoides</emphasis>
|
||
Barnard, 1954
|
||
</taxonomicName>
|
||
, was reinvestigated by
|
||
<bibRefCitation id="AD1B16DEFFFDFFF4C0D1F85CE0C1F863" author="Goeke" box="[420,723,1962,1988]" pageId="7" pageNumber="54" refString="Goeke, G. D. & R. W. Heard, Jr. (1983) Amphipods of the family Ampeliscidae (Gammaridea). I. Ampelisca bicarinata, a new species of amphipod from the Gulf of Mexico. Gulf Research Report, 7, 217 - 223." type="journal article" year="1983">
|
||
Goeke and
|
||
<collectingCountry id="B19D2BBFFFFDFFF4C35AF85CE065F863" box="[559,631,1962,1988]" name="Heard Island and McDonald Islands" pageId="7" pageNumber="52">Heard</collectingCountry>
|
||
(1983)
|
||
</bibRefCitation>
|
||
. They found that specimen from the Gulf of
|
||
<collectingCountry id="B19D2BBFFFFDFFF4C58DF85CE743F863" box="[1272,1361,1962,1988]" name="Mexico" pageId="7" pageNumber="52">Mexico</collectingCountry>
|
||
had a shorter antenna 1 of the female, stronger carina of the urosome, extra tooth on the inner plate of the maxilliped as well as welldeveloped lateral carinae of pleon segment 3. They described it as a new species,
|
||
<taxonomicName id="0E8A10ACFFF2FFFBC457FF6EE303FF7E" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="8" pageNumber="53" phylum="Arthropoda" rank="species" species="bicarinata">
|
||
<emphasis id="FBFEB73DFFF2FFFBC457FF6EE303FF7E" italics="true" pageId="8" pageNumber="53">Ampelisca bicarinata</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
<bibRefCitation id="AD1B16DEFFF2FFFBC056FF36E064FF7D" author="Barnard" box="[291,630,192,218]" pageId="8" pageNumber="54" refString="Barnard, J. L & J. D. Thomas (1989). A new species, Ampelisca burkei, (Crustacea: Amphipoda) from Florida. Proceedings of the Biological Society of Washington, 102, 375 - 384." type="journal article" year="1989">Barnard and Thomas (1989)</bibRefCitation>
|
||
separated
|
||
<taxonomicName id="0E8A10ACFFF2FFFBC38CFF36E17AFF7E" box="[761,872,192,217]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="8" pageNumber="53" phylum="Arthropoda" rank="species" species="burkei">
|
||
<emphasis id="FBFEB73DFFF2FFFBC38CFF36E17AFF7E" box="[761,872,192,217]" italics="true" pageId="8" pageNumber="53">A. burkei</emphasis>
|
||
</taxonomicName>
|
||
, from Florida, from its eastern Pacific twin
|
||
<taxonomicName id="0E8A10ACFFF2FFFBC4F6FF36E39DFEA5" authority="Holmes, 1908" authorityName="Holmes" authorityYear="1908" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="8" pageNumber="53" phylum="Arthropoda" rank="species" species="lobata">
|
||
<emphasis id="FBFEB73DFFF2FFFBC4F6FF36E2F0FEA6" italics="true" pageId="8" pageNumber="53">A. lobata</emphasis>
|
||
<bibRefCitation id="AD1B16DEFFF2FFFBC19CFF1EE39DFEA5" author="Holmes" box="[233,399,232,258]" pageId="8" pageNumber="54" refString="Holmes, S. J. (1908) The Amphipoda collected by the U. S. Bureau of Fisheries Steamer Albatross off the west coast of North America, in 1903 and 1904, with description of a new family and several new genera and species. Proceedings of the United Sates National Museum, 35, 489 - 543, 46 text figs." type="journal article" year="1908">Holmes, 1908</bibRefCitation>
|
||
</taxonomicName>
|
||
, based on differences in shape and setation of article 4 as well as a single spine on article 5 of pereopod 7. These works demonstrated the subtle differences between the species of the
|
||
<taxonomicName id="0E8A10ACFFF2FFFBC58EFEE6E78EFE8D" box="[1275,1436,272,298]" class="Malacostraca" family="Ampeliscidae" kingdom="Animalia" order="Amphipoda" pageId="8" pageNumber="53" phylum="Arthropoda" rank="family">Ampeliscidae</taxonomicName>
|
||
and the need for care in identifying them.
|
||
</paragraph>
|
||
<paragraph id="C9356B2FFFF2FFFBC1B3FE96E6ACFDCD" blockId="8.[151,1439,152,1220]" pageId="8" pageNumber="53">
|
||
Ampeliscids have been placed in species groups based on morphologically similar specimens (Kaïm
|
||
<bibRefCitation id="AD1B16DEFFF2FFFBC1E2FE7EE320FE05" author="Malka" box="[151,306,392,418]" pageId="8" pageNumber="54" refString="Kaim-Malka, R. A. (2000) Elevation of two eastern Atlantic varieties of Ampelisca brevicornis (Costa, 1853) (Crustacea: Amphipoda) to full specific rank with redescription of the species. Journal of Natural History, 34, 1939 - 1966." type="journal article" year="2000">Malka, 2000</bibRefCitation>
|
||
). Like
|
||
<taxonomicName id="0E8A10ACFFF2FFFBC0F1FE7EE0A1FE06" box="[388,691,392,417]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="8" pageNumber="53" phylum="Arthropoda" rank="species" species="mississippiana">
|
||
<emphasis id="FBFEB73DFFF2FFFBC0F1FE7EE0A1FE06" box="[388,691,392,417]" italics="true" pageId="8" pageNumber="53">Ampelisca mississippiana</emphasis>
|
||
</taxonomicName>
|
||
, the ampeliscid species
|
||
<taxonomicName id="0E8A10ACFFF2FFFBC2A1FE7EE649FE06" box="[980,1115,392,417]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="8" pageNumber="53" phylum="Arthropoda" rank="species" species="pugetica">
|
||
<emphasis id="FBFEB73DFFF2FFFBC2A1FE7EE649FE06" box="[980,1115,392,417]" italics="true" pageId="8" pageNumber="53">A. pugetica</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<emphasis id="FBFEB73DFFF2FFFBC51FFE7EE789FE06" box="[1130,1435,392,417]" italics="true" pageId="8" pageNumber="53">
|
||
<taxonomicName id="0E8A10ACFFF2FFFBC51FFE7EE6EDFE06" box="[1130,1279,392,417]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="8" pageNumber="53" phylum="Arthropoda" rank="species" species="mexicana">A. mexicana</taxonomicName>
|
||
,
|
||
<taxonomicName id="0E8A10ACFFF2FFFBC479FE7EE785FE06" box="[1292,1431,392,417]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="8" pageNumber="53" phylum="Arthropoda" rank="species" species="uncinata">A. uncinata</taxonomicName>
|
||
,
|
||
</emphasis>
|
||
and
|
||
<emphasis id="FBFEB73DFFF2FFFBC1BFFE46E325FE6E" box="[202,311,432,457]" italics="true" pageId="8" pageNumber="53">
|
||
<taxonomicName id="0E8A10ACFFF2FFFBC1BFFE46E321FE6E" box="[202,307,432,457]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="8" pageNumber="53" phylum="Arthropoda" rank="species" species="gibba">A. gibba</taxonomicName>
|
||
,
|
||
</emphasis>
|
||
from the northwestern Atlantic share common morphological characteristics including a large posterior lobe on the merus of pereopod 5, pleon segment 3 with a convex posterior edge bearing an acute spine; and uropod 3 having a lanceolate shape. They can be distinguished by features such as the shape of the head, presence or absence of corneal lenses, shape of the dorsal carina of pleon segment 4, shape of the merus and carpus of pereopod 5, shape of uropod 2, and ratio of article 2 to article
|
||
<quantity id="0E72C6CAFFF2FFFBC567FDA6E62DFDCD" box="[1042,1087,592,618]" metricMagnitude="-2" metricUnit="m" metricValue="2.54" pageId="8" pageNumber="53" unit="in" value="1.0">1 in</quantity>
|
||
antenna 1.
|
||
</paragraph>
|
||
<paragraph id="C9356B2FFFF2FFFBC1B3FD81E6B9FCAB" blockId="8.[151,1439,152,1220]" pageId="8" pageNumber="53">
|
||
<emphasis id="FBFEB73DFFF2FFFBC1B3FD81E385FD36" bold="true" box="[198,407,631,657]" pageId="8" pageNumber="53">Ecological notes.</emphasis>
|
||
<taxonomicName id="0E8A10ACFFF2FFFBC0EAFD8EE0DFFD36" box="[415,717,632,657]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="8" pageNumber="53" phylum="Arthropoda" rank="species" species="mississippiana" status="sp. nov.">
|
||
<emphasis id="FBFEB73DFFF2FFFBC0EAFD8EE0DFFD36" box="[415,717,632,657]" italics="true" pageId="8" pageNumber="53">Ampelisca mississippiana</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="E0CD0A46FFF2FFFBC3A0FD8EE11FFD35" box="[725,781,632,658]" pageId="8" pageNumber="53" rank="species">n.sp.</taxonomicNameLabel>
|
||
was collected from the head of the Mississippi Canyon at a depth of approximately
|
||
<specimenCount id="DF8CA0A6FFF2FFFBC0AAFD56E022FD1D" box="[479,560,672,698]" pageId="8" pageNumber="53" type="generic">
|
||
<quantity id="0E72C6CAFFF2FFFBC0AAFD56E03EFD1D" box="[479,556,672,698]" metricMagnitude="2" metricUnit="m" metricValue="4.8" pageId="8" pageNumber="53" unit="m" value="480.0">480 m</quantity>
|
||
.
|
||
</specimenCount>
|
||
The new species was a numerical dominant at the head of the canyon with densities reaching 26,000 ind.m 2.
|
||
<taxonomicName id="0E8A10ACFFF2FFFBC353FD3DE0E1FD43" box="[550,755,715,740]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="8" pageNumber="53" phylum="Arthropoda" rank="species" species="mississippiana">
|
||
<emphasis id="FBFEB73DFFF2FFFBC353FD3DE0E1FD43" box="[550,755,715,740]" italics="true" pageId="8" pageNumber="53">A. mississippiana</emphasis>
|
||
</taxonomicName>
|
||
represented more than 85% of the total macrofauna at this location. The sediment at the head of the canyon is muddy, about 73% mud and 25% silt.
|
||
</paragraph>
|
||
<paragraph id="C9356B2FFFF2FFFBC1B3FCECE601FB83" blockId="8.[151,1439,152,1220]" pageId="8" pageNumber="53">
|
||
Why might
|
||
<taxonomicName id="0E8A10ACFFF2FFFBC02CFCEDE038FC93" box="[345,554,795,820]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="8" pageNumber="53" phylum="Arthropoda" rank="species" species="mississippiana">
|
||
<emphasis id="FBFEB73DFFF2FFFBC02CFCEDE038FC93" box="[345,554,795,820]" italics="true" pageId="8" pageNumber="53">A. mississippiana</emphasis>
|
||
</taxonomicName>
|
||
occur at such high densities in this location? Ampeliscid amphipods are known to be tube dwellers collecting suspended and settling matter or raking sediment for feeding (
|
||
<bibRefCitation id="AD1B16DEFFF2FFFBC423FCB4E2F1FC23" author="Mills" pageId="8" pageNumber="54" refString="Mills, E. I. (1967 a) The biology of an amphipod ampeliscid crustacean sibling species pair. Journal of Fisheries Research Board of Canada, 24, 305 - 355." type="journal article" year="1967" yearSuffix="a">Mills, 1967a</bibRefCitation>
|
||
). Canyons are known to be a good conduit of sediment and organic matter from the continental shelf to the deep water.
|
||
<bibRefCitation id="AD1B16DEFFF2FFFBC023FC64E01FFC0B" author="Gardner" box="[342,525,914,940]" pageId="8" pageNumber="54" refString="Gardner, W. D. (1989) Periodic resuspension in Baltimore Canyon by focusing of internal waves. Journal of Geophysical Research, 94, 18185 - 18194." type="journal article" year="1989">Gardner (1989)</bibRefCitation>
|
||
found that the canyon focuses internal tides, which lead to mixing near the bottom and resuspension of particulate matter producing a nepheloid layer. These sedimentary conditions might explain the existence of such high densities of this species at this location. It is known also that tube builders can withstand the shear of the current and stabilize the sloppy mud.
|
||
</paragraph>
|
||
<paragraph id="C9356B2FFFF2FFFBC1B3FBC4E63DFB63" blockId="8.[151,1439,152,1220]" pageId="8" pageNumber="53">
|
||
The
|
||
<taxonomicName id="0E8A10ACFFF2FFFBC18EFBC5E367FBEB" box="[251,373,1075,1100]" class="Malacostraca" family="Ampeliscidae" genus="Ampelisca" kingdom="Animalia" order="Amphipoda" pageId="8" pageNumber="53" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="FBFEB73DFFF2FFFBC18EFBC5E367FBEB" box="[251,373,1075,1100]" italics="true" pageId="8" pageNumber="53">Ampelisca</emphasis>
|
||
</taxonomicName>
|
||
mat at the head of the canyon is likely to be of great ecological importance in recycling of organic carbon that might be transported from the shelf to the slope and the deep Gulf. The tubes stabilize sediments through reducing resuspension and erosion, which is a common ecological role for all the known sedentary tube burrowers that form mats at high densities (
|
||
<bibRefCitation id="AD1B16DEFFF2FFFBC26AFB5CE630FB63" author="Gage" box="[799,1058,1194,1220]" pageId="8" pageNumber="54" refString="Gage, J. D. & Tyler P. A. (1991) Deep-sea Biology. Cambridge: Cambridge University Press. 504 pp." type="book" year="1991">Gage and Tyler, 1991</bibRefCitation>
|
||
).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |