135 lines
16 KiB
XML
135 lines
16 KiB
XML
<document id="D660794C0C5C0148284C58CB00C7E188" ID-CLB-Dataset="4735" ID-DOI="10.1080/713833842" ID-GBIF-Dataset="dbf360e3-f8f0-446e-a50d-c6b9a838063b" ID-ISSN="1464-5262" ID-Zenodo-Dep="5298392" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1629991316392" checkinUser="felipe" docAuthor="Healy, Brenda & Fend, Steve" docDate="2002" docId="C82087E6FFAE2E56FEE8FB98FD31FD51" docLanguage="en" docName="JNatHist.36.1.15-23.pdf" docOrigin="Journal of Natural History 36 (1)" docSource="http://www.tandfonline.com/doi/abs/10.1080/713833842" docStyle="DocumentStyle:B6EF65DE5B4D2965D4D236BA736D172F.2:JNatHist.2000-2002.journal_article.2cover" docStyleId="B6EF65DE5B4D2965D4D236BA736D172F" docStyleName="JNatHist.2000-2002.journal_article.2cover" docStyleVersion="2" docTitle="Mesenchytraeus pedatus Eisen 1904" docType="treatment" docVersion="7" lastPageNumber="21" masterDocId="3419FF9EFFA92E5EFF86FFCBFFB4FFF0" masterDocTitle="The occurrence of Mesenchytraeus (Enchytraeidae: Oligochaeta) in ri ‚ e habitats of north-west American rivers, with description of a new species" masterLastPageNumber="23" masterPageNumber="15" pageNumber="20" updateTime="1699145532973" updateUser="ExternalLinkService" zenodo-license-document="CLOSED">
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<mods:title id="340D930BC2AFD03D3469C7438F3BDDEE">The occurrence of Mesenchytraeus (Enchytraeidae: Oligochaeta) in ri ‚ e habitats of north-west American rivers, with description of a new species</mods:title>
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<mods:namePart id="251A5242C025CBABBA63848F7E8E1E23">Healy, Brenda</mods:namePart>
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<mods:namePart id="515B1A37F73996362E16D2F4D6BFE6F1">Fend, Steve</mods:namePart>
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<mods:title id="8F321B82CB02C99258382C3E8FA7FED4">Journal of Natural History</mods:title>
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<mods:part id="1E51C7D514031A165F0EFC87E06FB183">
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<mods:date id="4CCFA4E653ECAE897AFF0B97AA31311D">2002</mods:date>
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<mods:number id="53465A1BB534D6A7DB15EB874D5C3259">2002-01-31</mods:number>
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<mods:number id="66A92FA73AA1727DBB02BBE872E45324">36</mods:number>
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<treatment id="C82087E6FFAE2E56FEE8FB98FD31FD51" ID-DOI="http://doi.org/10.5281/zenodo.5305295" ID-GBIF-Taxon="185123813" ID-Zenodo-Dep="5305295" LSID="urn:lsid:plazi:treatment:C82087E6FFAE2E56FEE8FB98FD31FD51" httpUri="http://treatment.plazi.org/id/C82087E6FFAE2E56FEE8FB98FD31FD51" lastPageId="8" lastPageNumber="21" pageId="7" pageNumber="20">
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<subSubSection id="0893657BFFAE2E59FEE8FB98FCB3FB9B" box="[366,775,1107,1131]" pageId="7" pageNumber="20" type="nomenclature">
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<paragraph id="403636F0FFAE2E59FEE8FB98FCB3FB9B" blockId="7.[366,775,1107,1131]" box="[366,775,1107,1131]" pageId="7" pageNumber="20">
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<heading id="1B7E819CFFAE2E59FEE8FB98FCB3FB9B" box="[366,775,1107,1131]" centered="true" fontSize="10" level="2" pageId="7" pageNumber="20" reason="2">
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<taxonomicName id="87894D73FFAE2E59FEE8FB98FCB3FB9B" ID-CoL="3ZZH6" authority="Eisen, 1904" authorityName="Eisen" authorityYear="1904" box="[366,775,1107,1131]" class="Clitellata" family="Enchytraeidae" genus="Mesenchytraeus" kingdom="Animalia" order="Enchytraeida" pageId="7" pageNumber="20" phylum="Annelida" rank="species" species="pedatus">
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<emphasis id="72FDEAE2FFAE2E59FEE8FB98FDC9FB9B" bold="true" box="[366,637,1107,1131]" italics="true" pageId="7" pageNumber="20">Mesenchytraeus pedatus</emphasis>
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<bibRefCitation id="24184B01FFAE2E59FD00FB98FCB3FB9B" author="EISEN, G." box="[646,775,1107,1131]" pageId="7" pageNumber="20" pagination="126" refId="ref5073" refString="EISEN, G., 1904, Enchytraeidae of the west coast of North America, Harriman Alaska Expedition with Cooperation of Washington Academy of Sciences, Alaska XII (New York: Doubleday, Page and Co.), pp. 1 ± 126, pls I ± XX." type="journal article" year="1904">Eisen, 1904</bibRefCitation>
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</taxonomicName>
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection id="0893657BFFAE2E59FFDBFBBEFBADFB7B" box="[93,1049,1141,1163]" pageId="7" pageNumber="20" type="reference_group">
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<paragraph id="403636F0FFAE2E59FFDBFBBEFBADFB7B" blockId="7.[93,1049,1141,1163]" box="[93,1049,1141,1163]" pageId="7" pageNumber="20">
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<treatmentCitationGroup id="609911DEFFAE2E59FFDBFBBEFBADFB7B" box="[93,1049,1141,1163]" pageId="7" pageNumber="20">
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<treatmentCitation id="C12810E1FFAE2E59FFDBFBBEFE5DFB7B" author="EISEN, G." box="[93,489,1141,1163]" page="55" pageId="7" pageNumber="20" year="1904">
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<taxonomicName id="87894D73FFAE2E59FFDBFBBEFE5DFB7B" ID-CoL="3ZZH6" authority="Eisen, 1904: 55" authorityName="Eisen" authorityPageNumber="55" authorityYear="1904" box="[93,489,1141,1163]" class="Clitellata" family="Enchytraeidae" genus="Mesenchytraeus" kingdom="Animalia" order="Enchytraeida" pageId="7" pageNumber="20" phylum="Annelida" rank="species" species="pedatus">
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<emphasis id="72FDEAE2FFAE2E59FFDBFBBEFEFBFB7B" box="[93,335,1141,1163]" italics="true" pageId="7" pageNumber="20">Mesenchytraeus pedatus</emphasis>
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<bibRefCitation id="24184B01FFAE2E59FED5FBBEFE5DFB7B" author="EISEN, G." box="[339,489,1141,1163]" pageId="7" pageNumber="20" pagination="126" refId="ref5073" refString="EISEN, G., 1904, Enchytraeidae of the west coast of North America, Harriman Alaska Expedition with Cooperation of Washington Academy of Sciences, Alaska XII (New York: Doubleday, Page and Co.), pp. 1 ± 126, pls I ± XX." type="journal article" year="1904">Eisen, 1904: 55</bibRefCitation>
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</taxonomicName>
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</treatmentCitation>
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±57, ®gures 29, 30, pl. 1, ®gures 13, 14, pl. 9, ®gures 3±6.
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</treatmentCitationGroup>
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</paragraph>
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</subSubSection>
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<subSubSection id="0893657BFFAE2E56FF00FB63FD31FD51" lastPageId="8" lastPageNumber="21" pageId="7" pageNumber="20" type="materials_examined">
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<paragraph id="403636F0FFAE2E59FF00FB63FC4DFB2F" blockId="7.[93,1049,1192,1662]" pageId="7" pageNumber="20">
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<emphasis id="72FDEAE2FFAE2E59FF00FB63FEEBFB30" box="[134,351,1192,1216]" italics="true" pageId="7" pageNumber="20">Material examined.</emphasis>
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Three whole mounts from locality 18,
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<collectionCode id="2698AE35FFAE2E59FCABFB63FC35FB30" box="[813,897,1192,1216]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" lsid="urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="7" pageNumber="20" type="Museum">USNM</collectionCode>
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186806; four whole mounts from locality 18, and six from locality
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<quantity id="87719B15FFAE2E59FD40FB03FCB4FB10" box="[710,768,1224,1248]" metricMagnitude="-1" metricUnit="m" metricValue="3.302" pageId="7" pageNumber="20" unit="in" value="13.0">13 in</quantity>
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the collection of BH.
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</paragraph>
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<paragraph id="403636F0FFAE2E56FF00FB22FC5FFF53" blockId="7.[93,1049,1192,1662]" lastBlockId="8.[93,1049,107,674]" lastPageId="8" lastPageNumber="21" pageId="7" pageNumber="20">
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<emphasis id="72FDEAE2FFAE2E59FF00FB22FEBFFAF0" box="[134,267,1257,1280]" italics="true" pageId="7" pageNumber="20">Description.</emphasis>
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The following brief description supplements that of
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<bibRefCitation id="24184B01FFAE2E59FC00FB23FBADFAF0" author="EISEN, G." box="[902,1049,1256,1280]" pageId="7" pageNumber="20" pagination="126" refId="ref5073" refString="EISEN, G., 1904, Enchytraeidae of the west coast of North America, Harriman Alaska Expedition with Cooperation of Washington Academy of Sciences, Alaska XII (New York: Doubleday, Page and Co.), pp. 1 ± 126, pls I ± XX." type="journal article" year="1904">Eisen (1904)</bibRefCitation>
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and extends the range of variation. Length
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<quantity id="87719B15FFAE2E59FDE0FACCFD6EFAEF" box="[614,730,1287,1311]" metricMagnitude="-2" metricUnit="m" metricValue="1.6" metricValueMax="1.8" metricValueMin="1.4" pageId="7" pageNumber="20" unit="mm" value="16.0" valueMax="18.0" valueMin="14.0">14±18 mm</quantity>
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, width at VII 0.3±0.5 mm, segments 47±58 (
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<emphasis id="72FDEAE2FFAE2E59FEA1FAE3FE80FACF" box="[295,308,1320,1343]" italics="true" pageId="7" pageNumber="20">n</emphasis>
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510). Clitellar glands small, 12±20 Mm, irregular in shape with spaces of same size. Lateral chaetae ®ve in anterior bundles, two to three from VII; ventral bundles with ®ve to six anteriorly, four to ®ve in postclitellar region, length about 130 Mm throughout. Coelomocytes small for size of worm, 8±10 Mm long, coarsely granular. Dorsal vessel originating in XV or XVI. Seminal vesicle in X±XII, sometimes penetrating into egg sacs. Sperm funnels two or three times as long as wide, 240±340 Mm long. Vas deferens narrow, 5 Mm, widening to form an elongate atrium before entering large penial bulb surrounded by large accessory glands. Egg sacs with ovarian tissue and up to
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<specimenCount id="568FFD79FFAE2E59FE64F9ECFDE3F9CF" box="[482,599,1575,1599]" pageId="7" pageNumber="20" type="egg">seven eggs</specimenCount>
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extending to XVIII±XX. Spermathecae con®ned to
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<collectionCode id="2698AE35FFAE2E59FF61F98CFF49F9AE" box="[231,253,1607,1630]" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="7" pageNumber="20" type="Museum">V</collectionCode>
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, consisting of stout ectal ducts with longitudinal striations (probably muscle, see
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<bibRefCitation id="24184B01FFAE2E59FF60F9ADFEDCF98E" author="EISEN, G." box="[230,360,1638,1662]" pageId="7" pageNumber="20" pagination="126" refId="ref5073" refString="EISEN, G., 1904, Enchytraeidae of the west coast of North America, Harriman Alaska Expedition with Cooperation of Washington Academy of Sciences, Alaska XII (New York: Doubleday, Page and Co.), pp. 1 ± 126, pls I ± XX." type="journal article" year="1904">Eisen, 1904</bibRefCitation>
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, ®gure 29), slightly wider near pore, conical ampullae each with two club-shaped diverticula ending in almost spherical sperm chambers, and ental ducts uniting with gut in
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<collectionCode id="2698AE35FFA12E56FE45FF47FE6EFF53" box="[451,474,140,163]" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="8" pageNumber="21" type="Museum">V</collectionCode>
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. Some sperm may also be present in ampulla.
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</paragraph>
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<paragraph id="403636F0FFA12E56FF00FF60FF7CFE72" blockId="8.[93,1049,107,674]" pageId="8" pageNumber="21">
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<emphasis id="72FDEAE2FFA12E56FF00FF60FF44FF33" box="[134,240,171,195]" italics="true" pageId="8" pageNumber="21">Remarks.</emphasis>
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The species is distinguished by the large glands surrounding the penial bulb, and the form of the spermathecae with two diverticula. Eisen remarked on the exceptional size of the penial papillae which, when fully extended, were as long as the diameter of the body. Present specimens were somewhat larger than Eisen’s (47±58 segments compared with 48). The spermathecal ental ducts could not be traced to their union with the fore-gut, which may indeed be ventral as described by Eisen.
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</paragraph>
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<paragraph id="403636F0FFA12E56FF00FE41FD31FD51" blockId="8.[93,1049,107,674]" pageId="8" pageNumber="21">
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<emphasis id="72FDEAE2FFA12E56FF00FE41FE29FE52" box="[134,413,394,418]" italics="true" pageId="8" pageNumber="21">Distribution and habitat.</emphasis>
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<collectingRegion id="824DF812FFA12E56FE31FE41FD9EFE52" box="[439,554,394,418]" country="United States of America" name="California" pageId="8" pageNumber="21">California</collectingRegion>
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: Goose Lake, Alturas and other localities in Modoc Co., common in mud of creeks and lakes (
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<bibRefCitation id="24184B01FFA12E56FD3BFE61FC8BFE32" author="EISEN, G." box="[701,831,426,450]" pageId="8" pageNumber="21" pagination="126" refId="ref5073" refString="EISEN, G., 1904, Enchytraeidae of the west coast of North America, Harriman Alaska Expedition with Cooperation of Washington Academy of Sciences, Alaska XII (New York: Doubleday, Page and Co.), pp. 1 ± 126, pls I ± XX." type="journal article" year="1904">Eisen, 1904</bibRefCitation>
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); Columbia River,
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<collectingRegion id="824DF812FFA12E56FFDBFE01FF57FE12" box="[93,227,458,482]" country="United States of America" name="Washington" pageId="8" pageNumber="21">Washington</collectingRegion>
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, (site 8), Deschutes River,
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<collectingRegion id="824DF812FFA12E56FDD7FE01FD12FE12" box="[593,678,458,482]" country="United States of America" name="Oregon" pageId="8" pageNumber="21">Oregon</collectingRegion>
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(site 13), Sacramento River,
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<collectingRegion id="824DF812FFA12E56FFDBFE21FF65FDF2" box="[93,209,490,514]" country="United States of America" name="California" pageId="8" pageNumber="21">California</collectingRegion>
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(sites 18, 19). The sites are similar, i.e. fast runs in the larger rivers with coarse sediment dominated by cobble.
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<taxonomicName id="87894D73FFA12E56FDB2FDC1FCF3FDD2" authorityName="Eisen" authorityYear="1904" box="[564,839,522,546]" class="Clitellata" family="Enchytraeidae" genus="Mesenchytraeus" kingdom="Animalia" order="Enchytraeida" pageId="8" pageNumber="21" phylum="Annelida" rank="species" species="pedatus">
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<emphasis id="72FDEAE2FFA12E56FDB2FDC1FCF3FDD2" box="[564,839,522,546]" italics="true" pageId="8" pageNumber="21">Mesenchytraeus pedatus</emphasis>
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</taxonomicName>
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seems to inhabit lower gradient, downstream sites compared with
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<taxonomicName id="87894D73FFA12E56FD07FDE0FCBDFDB2" authorityName="Healy & Fend" authorityYear="2002" box="[641,777,554,578]" class="Clitellata" family="Enchytraeidae" genus="Mesenchytraeus" kingdom="Animalia" order="Enchytraeida" pageId="8" pageNumber="21" phylum="Annelida" rank="species" species="rhithralis">
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<emphasis id="72FDEAE2FFA12E56FD07FDE0FD2EFDB2" box="[641,666,555,578]" italics="true" pageId="8" pageNumber="21">M</emphasis>
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.
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<emphasis id="72FDEAE2FFA12E56FD20FDE1FCBDFDB2" box="[678,777,554,578]" italics="true" pageId="8" pageNumber="21">rhithralis</emphasis>
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</taxonomicName>
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, and also lentic habitats with ®ner sediment. However, it has never been found in warmer, turbid water. It may be accompanied by other oligochaetes and was co-dominant with the lumbriculid
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<taxonomicName id="87894D73FFA12E56FF6CFD41FDB9FD52" authority="Cook" authorityName="Cook" authorityYear="1966" box="[234,525,650,674]" class="Clitellata" family="Lumbriculidae" genus="Kincaidiana" kingdom="Animalia" order="Lumbriculida" pageId="8" pageNumber="21" phylum="Annelida" rank="species" species="freidris">
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<emphasis id="72FDEAE2FFA12E56FF6CFD41FE71FD52" box="[234,453,650,674]" italics="true" pageId="8" pageNumber="21">Kincaidiana freidris</emphasis>
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Cook
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</taxonomicName>
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at site 13.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |