241 lines
29 KiB
XML
241 lines
29 KiB
XML
<document id="346028F3CCF5A50E501871C521187E3B" ID-DOI="10.11646/phytotaxa.90.1.1" ID-ISSN="1179-3163" ID-Zenodo-Dep="5071976" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1625517298981" checkinUser="felipe" docAuthor="Pavlov, Aleksandar, Levkov, Zlatko, Williams, David M. & Edlund, Mark B." docDate="2013" docId="065A87E62A6CA41AFF5EFA93FDC80E05" docLanguage="en" docName="Phytotaxa.90.1.1-53.pdf" docOrigin="Phytotaxa 90 (1)" docSource="http://dx.doi.org/10.11646/phytotaxa.90.1.1" docStyle="DocumentStyle:13F189B31CB4CCCE9197361A4E100104.3:Phytotaxa.2011-2013.journal_article" docStyleId="13F189B31CB4CCCE9197361A4E100104" docStyleName="Phytotaxa.2011-2013.journal_article" docStyleVersion="3" docTitle="Hippodonta communis A. Pavlov, Levkov, D. M. Williams & Edlund 2013, sp. nov." docType="treatment" docVersion="4" lastPageNumber="33" masterDocId="FA63FF9E2A73A43AFFC9FF9DFF960A2E" masterDocTitle="Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes" masterLastPageNumber="53" masterPageNumber="1" pageNumber="32" updateTime="1698991198074" updateUser="plazi" zenodo-license-document="CLOSED">
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<mods:mods id="16DFF636BC4AC014AB47FA95AD35D8AA" xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:title id="C126539482FE3CDC788E22D7D9A44B97">Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes</mods:title>
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</mods:titleInfo>
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<mods:name id="5C52BB65C26C29A5B0B92DD0BAB0C129" type="personal">
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<mods:roleTerm id="428675EBBBFF0C45C8FCC9EBFF36504B">Author</mods:roleTerm>
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<mods:namePart id="A86DEF8FFD3D8D3CF5950CC24DC2C744">Pavlov, Aleksandar</mods:namePart>
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<mods:namePart id="1ECA9D3699485DFA7D45DCB4101E1720">Levkov, Zlatko</mods:namePart>
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<mods:namePart id="7AF32648DE67D9D6D8B762D8673667CA">Williams, David M.</mods:namePart>
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<mods:namePart id="CD8D91B071A07EB2F5F62868BC1EDF48">Edlund, Mark B.</mods:namePart>
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<mods:affiliation id="E1125C8E610C89315964BC8827262CBC">St. Croix Watershed Research Station, Science Museum of Minnesota, Marine on St. Croix, Minnesota, USA.</mods:affiliation>
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<mods:title id="FFF49BB10B6386292993271628E8EE67">Phytotaxa</mods:title>
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<mods:part id="CACEA45B0FFB4589FFEE6746FF1C7365">
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<mods:date id="BB5A9C290CB7005BCE6E2D7EEE7DBC47">2013</mods:date>
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<mods:number id="FE67ED6603B0AD769B02922DC1413CC3">2013-03-28</mods:number>
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<mods:number id="C2ADA2F7EE78386B3764C351B88C9F0C">90</mods:number>
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<mods:url id="A2828AB6357143148A78CD78D62FEB77">http://dx.doi.org/10.11646/phytotaxa.90.1.1</mods:url>
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<mods:identifier id="839E1516B8B82253E833E678B820DAD0" type="ISSN">1179-3163</mods:identifier>
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<mods:identifier id="DE25E93519B6B3BC55E33C6BDB1E46D8" type="Zenodo-Dep">5071976</mods:identifier>
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<treatment id="065A87E62A6CA41AFF5EFA93FDC80E05" ID-DOI="http://doi.org/10.5281/zenodo.5074140" ID-Zenodo-Dep="5074140" LSID="urn:lsid:plazi:treatment:065A87E62A6CA41AFF5EFA93FDC80E05" httpUri="http://treatment.plazi.org/id/065A87E62A6CA41AFF5EFA93FDC80E05" lastPageId="32" lastPageNumber="33" pageId="31" pageNumber="32">
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<subSubSection id="C6E9657B2A6CA425FF5EFA93FA870F06" box="[151,1297,1294,1320]" pageId="31" pageNumber="32" type="nomenclature">
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<paragraph id="8E4C36F02A6CA425FF5EFA93FA870F06" blockId="31.[151,1297,1294,1320]" box="[151,1297,1294,1320]" pageId="31" pageNumber="32">
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<heading id="D504819C2A6CA425FF5EFA93FA870F06" box="[151,1297,1294,1320]" fontSize="11" level="2" pageId="31" pageNumber="32" reason="3">
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<taxonomicName id="49F34D732A6CA425FF5EFA93FC2B0F06" authority="A. Pavlov, Levkov, D.M. Williams & Edlund" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[151,957,1294,1320]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="31" pageNumber="32" phylum="Bacillariophyta" rank="species" species="communis" status="sp. nov.">
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<emphasis id="BC87EAE22A6CA425FF5EFA93FE310F06" bold="true" box="[151,423,1294,1320]" italics="true" pageId="31" pageNumber="32">Hippodonta communis</emphasis>
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A. Pavlov, Levkov, D.M. Williams & Edlund
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</taxonomicName>
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,
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<emphasis id="BC87EAE22A6CA425FC01FA92FBB70F06" box="[968,1057,1295,1320]" italics="true" pageId="31" pageNumber="32">
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<taxonomicNameLabel id="A7B457992A6CA425FC01FA92FBB70F06" box="[968,1057,1295,1320]" pageId="31" pageNumber="32" rank="species">sp. nov.</taxonomicNameLabel>
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</emphasis>
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(
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<figureCitation id="16C82A752A6CA425FBE6FA93FB470F06" box="[1071,1233,1294,1320]" captionStart="FIGURES 499–546" captionStartId="51.[151,269,1730,1754]" captionTargetBox="[264,1324,194,1706]" captionTargetId="figure-65@51.[264,1324,194,1706]" captionTargetPageId="51" captionText="FIGURES 499–546: LM micrographs. Figs 499–519. Hippodonta microcostulata. Figs 520–525. Hippodonta kornevae. Fig. 525. Complete frustule in girdle view. Figs 526–534. Hippodonta certa (type material). Fig. 533. Complete frustule in girdle view. Figs 535–543. Hippodonta communis (type material). Figs 544–546. Hippodonta acus. Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5072008" httpUri="https://zenodo.org/record/5072008/files/figure.png" pageId="31" pageNumber="32">Figs 535–543</figureCitation>
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,
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<figureCitation id="16C82A752A6CA425FB15FA93FA9F0F06" box="[1244,1289,1294,1320]" captionStart="FIGURES 547–555" captionStartId="52.[151,269,1689,1713]" captionTargetBox="[264,1323,157,1669]" captionTargetId="figure-202@52.[264,1323,157,1669]" captionTargetPageId="52" captionText="FIGURES 547–555: SEM micrographs. Figs 547, 548. Hippodonta subelegans. Fig. 547. External view of entire valve. Terminal pores of raphe are simple linear. Fig. 548. Detail of central area. Lineolae quite narrow and long, bone-shaped. Figs 549, 550. Hippodonta acuta (type material). Fig. 549. Internal valve view. Linear raphe slit distally terminated by semi-elliptical helictoglossa, positioned just before terminal area. Fig. 550. Detail of internal mid-valve. Striae positioned in prominent depressions. Lineolae covered by prominent, broadly elliptical volae. Figs 551–554. Hippodonta microcostulata. Fig. 551. External view of entire valve. Terminal pores of raphe distinct, advancing strongly into terminal area. Figs 552, 554. External view of two complete frustules, showing girdle unornamented. Fig. 553. Detail of mid-valve in fig. 552. Lineolae prominent and elliptical, longer near raphe and shorter towards valve mantle. Fig. 555. Hippodonta communis (type material). External view of complete frustule. Lineolae prominent and long, simple linear. Girdle quite broad and unornamented. Scale bars in Figs 547, 549, 554 = 5 µm; Figs 548, 550, 553 = 1 µm; Figs 551, 552 = 2 µm; Fig. 555 = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5072010" httpUri="https://zenodo.org/record/5072010/files/figure.png" pageId="31" pageNumber="32">555</figureCitation>
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)
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection id="C6E9657B2A6CA425FF5EFAC9FD920DB1" pageId="31" pageNumber="32" type="materials_examined">
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<paragraph id="8E4C36F02A6CA425FF5EFAC9FD760FA2" blockId="31.[151,1435,1364,1420]" pageId="31" pageNumber="32">
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<emphasis id="BC87EAE22A6CA425FF5EFAC9FF590F42" bold="true" box="[151,207,1364,1388]" pageId="31" pageNumber="32">Type</emphasis>
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:—
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<materialsCitation id="3E9B3CAD2A6CA425FF27FAC8FD4D0FA2" collectingDate="1998-06-23" collectorName="D. M. Williams." country="Russia" elevation="20" location="Lake Baikal" municipality="Vydira" pageId="31" pageNumber="32" specimenCount="1" typeStatus="holotype">
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<collectingCountry id="F6E476602A6CA425FF27FAC8FEC40F42" box="[238,338,1365,1388]" name="Russia" pageId="31" pageNumber="32">RUSSIA</collectingCountry>
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.
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<location id="8B2C602B2A6CA425FE97FAC8FE720F42" LSID="urn:lsid:plazi:treatment:065A87E62A6CA41AFF5EFA93FDC80E05:8B2C602B2A6CA425FE97FAC8FE720F42" box="[350,484,1365,1388]" country="Russia" municipality="Vydira" name="Lake Baikal" pageId="31" pageNumber="32">Lake Baikal</location>
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,
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<collectingMunicipality id="6E28AC8A2A6CA425FE38FAC8FDAD0F42" box="[497,571,1365,1388]" pageId="31" pageNumber="32">Vydira</collectingMunicipality>
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, sediment,
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<elevation id="05DED1C32A6CA425FD7FFAC8FCA20F42" box="[694,820,1365,1388]" metricMagnitude="1" metricUnit="m" metricValue="2.0" pageId="31" pageNumber="32" unit="m" value="20.0">
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<quantity id="490B9B152A6CA425FD7FFAC8FD780F42" box="[694,750,1365,1388]" metricMagnitude="1" metricUnit="m" metricValue="2.0" pageId="31" pageNumber="32" unit="m" value="20.0">20 m</quantity>
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depth
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</elevation>
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,
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<date id="FA4D10302A6CA425FC88FAC8FC420F42" box="[833,980,1365,1388]" pageId="31" pageNumber="32" value="1998-06-23">
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<collectingDate id="EA09E9D82A6CA425FC88FAC8FC420F42" box="[833,980,1365,1388]" pageId="31" pageNumber="32" value="1998-06-23">23 June 1998</collectingDate>
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</date>
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, collector
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<collectorName id="230653262A6CA425FB81FAC8FB7C0F42" box="[1096,1258,1365,1388]" pageId="31" pageNumber="32">
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<emphasis id="BC87EAE22A6CA425FB81FAC8FB720F42" box="[1096,1252,1365,1388]" italics="true" pageId="31" pageNumber="32">D.M. Williams</emphasis>
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.
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</collectorName>
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||
(
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<typeStatus id="514888522A6CA425FB32FAC8FAC80F42" box="[1275,1374,1365,1388]" pageId="31" pageNumber="32" type="holotype">holotype</typeStatus>
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: slide BM! 100465; isotype: slide MKNDC! 005845/A)
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</materialsCitation>
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.
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</paragraph>
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<paragraph id="8E4C36F02A6CA425FF5EFA28FB7A0D2A" blockId="31.[151,1436,1461,2028]" pageId="31" pageNumber="32">
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Valves narrow, rhombic-lanceolate, with acutely rounded valve ends, not protracted. Valve length
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<quantity id="490B9B152A6CA425FAECFA28FF570FD8" metricMagnitude="-2" metricUnit="m" metricValue="2.31" metricValueMax="2.66" metricValueMin="1.96" pageId="31" pageNumber="32" unit="mm" value="23.1" valueMax="26.6" valueMin="19.6">19.6–26.6 µm</quantity>
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, valve breadth 4.0–5.0 µm. Axial area narrow, linear throughout, rarely observed as broad, expanding into a prominent, panduriform central area. Central area consistently forming fully developed fascia. Terminal area small, clearly distinguishable with LM, lunar-shaped, and cap-like. Raphe linear-filiform, with pronounced teardrop-shaped and distantly positioned central pores. Terminal pores of raphe less pronounced than central pores, vaguely distinguishable with LM, simple linear, weakly advancing into the terminal area. Striae coarse, of variable pattern at middle, weakly to strongly radiate, becoming parallel to weakly convergent towards valve ends,
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<quantity id="490B9B152A6CA425FEEFF959FE170CF0" box="[294,385,1732,1758]" metricMagnitude="-1" metricUnit="m" metricValue="2.667" metricValueMax="3.048" metricValueMin="2.286" pageId="31" pageNumber="32" unit="in" value="10.5" valueMax="12.0" valueMin="9.0">9–12 in</quantity>
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<quantity id="490B9B152A6CA425FE40F959FE4D0CF0" box="[393,475,1732,1758]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="31" pageNumber="32" unit="mm" value="10.0">10 µm</quantity>
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. Interstriae of lesser width than striae, equally pronounced throughout. Lineolae composing the striae clearly discernible with LM, large, 3 or 4 along a stria at middle of valve.
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</paragraph>
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<paragraph id="8E4C36F02A6CA425FF5EF88CFD920DB1" blockId="31.[151,1436,1461,2028]" pageId="31" pageNumber="32">
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SEM: Externally, valve face flat (
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<figureCitation id="16C82A752A6CA425FD8DF88CFD250D05" box="[580,691,1809,1835]" captionStart="FIGURES 547–555" captionStartId="52.[151,269,1689,1713]" captionTargetBox="[264,1323,157,1669]" captionTargetId="figure-202@52.[264,1323,157,1669]" captionTargetPageId="52" captionText="FIGURES 547–555: SEM micrographs. Figs 547, 548. Hippodonta subelegans. Fig. 547. External view of entire valve. Terminal pores of raphe are simple linear. Fig. 548. Detail of central area. Lineolae quite narrow and long, bone-shaped. Figs 549, 550. Hippodonta acuta (type material). Fig. 549. Internal valve view. Linear raphe slit distally terminated by semi-elliptical helictoglossa, positioned just before terminal area. Fig. 550. Detail of internal mid-valve. Striae positioned in prominent depressions. Lineolae covered by prominent, broadly elliptical volae. Figs 551–554. Hippodonta microcostulata. Fig. 551. External view of entire valve. Terminal pores of raphe distinct, advancing strongly into terminal area. Figs 552, 554. External view of two complete frustules, showing girdle unornamented. Fig. 553. Detail of mid-valve in fig. 552. Lineolae prominent and elliptical, longer near raphe and shorter towards valve mantle. Fig. 555. Hippodonta communis (type material). External view of complete frustule. Lineolae prominent and long, simple linear. Girdle quite broad and unornamented. Scale bars in Figs 547, 549, 554 = 5 µm; Figs 548, 550, 553 = 1 µm; Figs 551, 552 = 2 µm; Fig. 555 = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5072010" httpUri="https://zenodo.org/record/5072010/files/figure.png" pageId="31" pageNumber="32">Fig. 555</figureCitation>
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). Terminal areas weakly expanding onto valve face. Striae uniseriate. Lineolae prominent and long, but simple linear. Row of areolae positioned on apical valve mantle, also uniseriate. Prominent hyaline area present throughout valve mantle, absent of any structure. Girdle band quite broad and unornamented.
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</paragraph>
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</subSubSection>
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<subSubSection id="C6E9657B2A6CA41AFF0FF836FEE80B08" lastPageId="32" lastPageNumber="33" pageId="31" pageNumber="32" type="distribution">
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<paragraph id="8E4C36F02A6CA425FF0FF836FE7F0DC2" blockId="31.[151,1436,1461,2028]" pageId="31" pageNumber="32">
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<emphasis id="BC87EAE22A6CA425FF0FF836FEC90DEB" bold="true" box="[198,351,1963,1989]" pageId="31" pageNumber="32">Distribution</emphasis>
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:—
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<taxonomicName id="49F34D732A6CA425FE4DF831FD030DEB" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[388,661,1964,1989]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="31" pageNumber="32" phylum="Bacillariophyta" rank="species" species="communis">
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<emphasis id="BC87EAE22A6CA425FE4DF831FD030DEB" box="[388,661,1964,1989]" italics="true" pageId="31" pageNumber="32">Hippodonta communis</emphasis>
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</taxonomicName>
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has so far only been observed in Lake Baikal,
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<collectingCountry id="F6E476602A6CA425FB3EF831FADF0DE8" box="[1271,1353,1964,1990]" name="Russia" pageId="31" pageNumber="32">Russia</collectingCountry>
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. Quite abundant at the
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<typeStatus id="514888522A6CA425FE98F84FFE150DC2" box="[337,387,2002,2028]" pageId="31" pageNumber="32">type</typeStatus>
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locality.
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</paragraph>
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<paragraph id="8E4C36F02A53A41AFF0FFF0AFEE80B08" blockId="32.[151,1436,151,294]" pageId="32" pageNumber="33">
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<emphasis id="BC87EAE22A53A41AFF0FFF0AFEFA0A9F" bold="true" box="[198,364,151,177]" pageId="32" pageNumber="33">Observations</emphasis>
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:—With respect to valve outline and striae pattern,
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<taxonomicName id="49F34D732A53A41AFC0CFF05FBF70A9F" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[965,1121,152,178]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="32" pageNumber="33" phylum="Bacillariophyta" rank="species" species="communis">
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<emphasis id="BC87EAE22A53A41AFC0CFF05FC4C0A9F" box="[965,986,152,177]" italics="true" pageId="32" pageNumber="33">H</emphasis>
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.
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<emphasis id="BC87EAE22A53A41AFC23FF05FBF70A9F" box="[1002,1121,152,177]" italics="true" pageId="32" pageNumber="33">communis</emphasis>
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</taxonomicName>
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is most similar to
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<taxonomicName id="49F34D732A53A41AFAF5FF05FA0A0A9F" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[1340,1436,152,178]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="32" pageNumber="33" phylum="Bacillariophyta" rank="species" species="certa">
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||
<emphasis id="BC87EAE22A53A41AFAF5FF05FAC70A9F" box="[1340,1361,152,177]" italics="true" pageId="32" pageNumber="33">H</emphasis>
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||
.
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<emphasis id="BC87EAE22A53A41AFAA9FF05FA0A0A9F" box="[1376,1436,152,177]" italics="true" pageId="32" pageNumber="33">certa</emphasis>
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</taxonomicName>
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(
|
||
<figureCitation id="16C82A752A53A41AFF56FF23FED30AF6" box="[159,325,190,216]" captionStart="FIGURES 499–546" captionStartId="51.[151,269,1730,1754]" captionTargetBox="[264,1324,194,1706]" captionTargetId="figure-65@51.[264,1324,194,1706]" captionTargetPageId="51" captionText="FIGURES 499–546: LM micrographs. Figs 499–519. Hippodonta microcostulata. Figs 520–525. Hippodonta kornevae. Fig. 525. Complete frustule in girdle view. Figs 526–534. Hippodonta certa (type material). Fig. 533. Complete frustule in girdle view. Figs 535–543. Hippodonta communis (type material). Figs 544–546. Hippodonta acus. Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5072008" httpUri="https://zenodo.org/record/5072008/files/figure.png" pageId="32" pageNumber="33">
|
||
Figs 526
|
||
<emphasis id="BC87EAE22A53A41AFECFFF23FE820AF6" bold="true" box="[262,276,190,216]" pageId="32" pageNumber="33">–</emphasis>
|
||
534
|
||
</figureCitation>
|
||
). Still,
|
||
<taxonomicName id="49F34D732A53A41AFE5FFF22FDA70AF6" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[406,561,190,216]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="32" pageNumber="33" phylum="Bacillariophyta" rank="species" species="communis">
|
||
<emphasis id="BC87EAE22A53A41AFE5FFF22FE3D0AF6" box="[406,427,191,216]" italics="true" pageId="32" pageNumber="33">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A53A41AFE73FF22FDA70AF6" box="[442,561,191,216]" italics="true" pageId="32" pageNumber="33">communis</emphasis>
|
||
</taxonomicName>
|
||
has a lower valve width when valves of equal length are compared, as well as fewer lineolae within a stria at the middle of the valve compared with the number of lineolae in
|
||
<taxonomicName id="49F34D732A53A41AFAF3FF78FA0A0AD0" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[1338,1436,229,255]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="32" pageNumber="33" phylum="Bacillariophyta" rank="species" species="certa">
|
||
<emphasis id="BC87EAE22A53A41AFAF3FF78FAD90AD0" box="[1338,1359,229,254]" italics="true" pageId="32" pageNumber="33">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A53A41AFA96FF78FA0A0AD0" box="[1375,1436,229,254]" italics="true" pageId="32" pageNumber="33">certa</emphasis>
|
||
</taxonomicName>
|
||
(4–6 within a stria).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C6E9657B2A53A41AFF5EFEE2FD19096D" pageId="32" pageNumber="33" type="reference_group">
|
||
<paragraph id="8E4C36F02A53A41AFF5EFEE2FE900BEE" blockId="32.[151,1436,383,448]" pageId="32" pageNumber="33">
|
||
<treatmentCitationGroup id="AEE311DE2A53A41AFF5EFEE2FE900BEE" pageId="32" pageNumber="33">
|
||
<taxonomicName id="49F34D732A53A41AFF5EFEE2FCB50BB4" authority="Kulikovskiy, Metzeltin & Lange-Bert." authorityName="Kulikovskiy, Metzeltin & Lange-Bert." box="[151,803,383,410]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="32" pageNumber="33" phylum="Bacillariophyta" rank="species" species="acus">
|
||
<emphasis id="BC87EAE22A53A41AFF5EFEE2FEF40BB7" bold="true" box="[151,354,383,409]" italics="true" pageId="32" pageNumber="33">Hippodonta acus</emphasis>
|
||
Kulikovskiy, Metzeltin & Lange-Bert.
|
||
</taxonomicName>
|
||
in
|
||
<treatmentCitation id="0F5210E12A53A41AFC8EFE1DFB080BB4" author="Kulikovskiy, M. & Lange-Bertalot, H. & Metzeltin D. & Witkowski, A." box="[839,1182,384,410]" page="143" pageId="32" pageNumber="33" year="2012">
|
||
<bibRefCitation id="EA624B012A53A41AFC8EFE1DFB080BB4" author="Kulikovskiy, M. & Lange-Bertalot, H. & Metzeltin D. & Witkowski, A." box="[839,1182,384,410]" pageId="32" pageNumber="33" pagination="1 - 607" refId="ref27477" refString="Kulikovskiy, M., Lange-Bertalot, H., Metzeltin D. & Witkowski, A. (2012) Lake Baikal: Hotspot of endemic diatoms, I. Iconographia Diatomologica 23: 1 - 607." type="journal article" year="2012">
|
||
Kulikovskiy
|
||
<emphasis id="BC87EAE22A53A41AFC14FE1DFB810BB7" box="[989,1047,384,409]" italics="true" pageId="32" pageNumber="33">et al.</emphasis>
|
||
(2012: 143
|
||
</bibRefCitation>
|
||
</treatmentCitation>
|
||
, figs 67: 13, 14) (
|
||
<figureCitation id="16C82A752A53A41AFAA0FE1DFF680BEE" captionStart="FIGURES 499–546" captionStartId="51.[151,269,1730,1754]" captionTargetBox="[264,1324,194,1706]" captionTargetId="figure-65@51.[264,1324,194,1706]" captionTargetPageId="51" captionText="FIGURES 499–546: LM micrographs. Figs 499–519. Hippodonta microcostulata. Figs 520–525. Hippodonta kornevae. Fig. 525. Complete frustule in girdle view. Figs 526–534. Hippodonta certa (type material). Fig. 533. Complete frustule in girdle view. Figs 535–543. Hippodonta communis (type material). Figs 544–546. Hippodonta acus. Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5072008" httpUri="https://zenodo.org/record/5072008/files/figure.png" pageId="32" pageNumber="33">Figs 544–546</figureCitation>
|
||
)
|
||
</treatmentCitationGroup>
|
||
</paragraph>
|
||
<paragraph id="8E4C36F02A53A41AFF5EFE69FD19096D" blockId="32.[151,1436,500,1067]" pageId="32" pageNumber="33">
|
||
Valves quite narrow-rhombic, with weakly protracted and acutely rounded valve ends. Valve length
|
||
<quantity id="490B9B152A53A41AFAEEFE69FF54081A" metricMagnitude="-2" metricUnit="m" metricValue="2.9899999999999998" metricValueMax="3.54" metricValueMin="2.44" pageId="32" pageNumber="33" unit="mm" value="29.9" valueMax="35.4" valueMin="24.4">24.4–35.4 µm</quantity>
|
||
, breadth
|
||
<quantity id="490B9B152A53A41AFEFCFD87FE51081A" box="[309,455,538,564]" metricMagnitude="-3" metricUnit="m" metricValue="4.5" metricValueMax="5.3" metricValueMin="3.7" pageId="32" pageNumber="33" unit="mm" value="4.5" valueMax="5.3" valueMin="3.7">3.7–5.3 µm</quantity>
|
||
. Axial area narrow linear throughout, expanding into a prominent panduriform central area. Central area consistently forming fully developed fascia. Terminal area prominent, clearly distinguishable with LM, triangular in shape. Raphe linear-filiform, with pronounced teardrop-shaped, closely spaced central pores. Terminal pores of raphe less pronounced than central pores, clearly distinguishable with LM, simple-circular, not advancing into the terminal area. Striae coarse, rarely observed as fine, weakly radiate at middle, becoming parallel towards valve ends,
|
||
<quantity id="490B9B152A53A41AFCF2FD41FC0508D8" box="[827,915,732,758]" metricMagnitude="-1" metricUnit="m" metricValue="2.286" metricValueMax="2.794" metricValueMin="1.778" pageId="32" pageNumber="33" unit="in" value="9.0" valueMax="11.0" valueMin="7.0">7–11 in</quantity>
|
||
<quantity id="490B9B152A53A41AFC52FD41FC7A08D8" box="[923,1004,732,758]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="32" pageNumber="33" unit="mm" value="10.0">10 µm</quantity>
|
||
. Interstriae of equal or greater width than striae, pronounced stronger towards valve centre. Lineolae composing striae, vaguely discernible with LM, 3 or 4 along a stria at middle of valve.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C6E9657B2A53A41AFF0FFCD2FDC80E05" pageId="32" pageNumber="33" type="distribution">
|
||
<paragraph id="8E4C36F02A53A41AFF0FFCD2FB2309BE" blockId="32.[151,1436,500,1067]" pageId="32" pageNumber="33">
|
||
<emphasis id="BC87EAE22A53A41AFF0FFCD2FEC90947" bold="true" box="[198,351,847,873]" pageId="32" pageNumber="33">Distribution</emphasis>
|
||
:—
|
||
<taxonomicName id="49F34D732A53A41AFE4DFCCDFDC70947" box="[388,593,848,873]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="32" pageNumber="33" phylum="Bacillariophyta" rank="species" species="acus">
|
||
<emphasis id="BC87EAE22A53A41AFE4DFCCDFDC70947" box="[388,593,848,873]" italics="true" pageId="32" pageNumber="33">Hippodonta acus</emphasis>
|
||
</taxonomicName>
|
||
has so far only been observed in Lake Baikal,
|
||
<collectingCountry id="F6E476602A53A41AFB5FFCCDFB7E0944" box="[1174,1256,848,874]" name="Russia" pageId="32" pageNumber="33">Russia</collectingCountry>
|
||
. In the present study this species was found in a
|
||
<quantity id="490B9B152A53A41AFDD7FCEBFDF709BE" box="[542,609,886,912]" metricMagnitude="-1" metricUnit="m" metricValue="8.0" pageId="32" pageNumber="33" unit="m" value="0.8">0.8 m</quantity>
|
||
deep sand sample,
|
||
<quantity id="490B9B152A53A41AFC8CFCEBFC1609BE" box="[837,896,886,912]" metricMagnitude="3" metricUnit="m" metricValue="5.0" pageId="32" pageNumber="33" unit="km" value="5.0">5 km</quantity>
|
||
east from Nizhneangarsk.
|
||
</paragraph>
|
||
<paragraph id="8E4C36F02A53A41AFF0FFC00FDC80E05" blockId="32.[151,1436,500,1067]" pageId="32" pageNumber="33">
|
||
<emphasis id="BC87EAE22A53A41AFF0FFC00FEFA0999" bold="true" box="[198,364,925,951]" pageId="32" pageNumber="33">Observations</emphasis>
|
||
:—
|
||
<taxonomicName id="49F34D732A53A41AFE5BFC00FDF60998" box="[402,608,925,950]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="32" pageNumber="33" phylum="Bacillariophyta" rank="species" species="acus">
|
||
<emphasis id="BC87EAE22A53A41AFE5BFC00FDF60998" box="[402,608,925,950]" italics="true" pageId="32" pageNumber="33">Hippodonta acus</emphasis>
|
||
</taxonomicName>
|
||
has characteristically narrow and acutely rounded valve ends, thus showing a resemblance only to
|
||
<taxonomicName id="49F34D732A53A41AFDEDFC59FD1809F3" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[548,654,964,990]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="32" pageNumber="33" phylum="Bacillariophyta" rank="species" species="acuta">
|
||
<emphasis id="BC87EAE22A53A41AFDEDFC59FDAF09F3" box="[548,569,964,989]" italics="true" pageId="32" pageNumber="33">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A53A41AFD83FC59FD1809F3" box="[586,654,964,989]" italics="true" pageId="32" pageNumber="33">acuta</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<figureCitation id="16C82A752A53A41AFD69FC59FCC409F0" box="[672,850,964,990]" captionStart="FIGURES 443–498" captionStartId="50.[151,270,1654,1678]" captionTargetBox="[264,1324,194,1630]" captionTargetId="figure-42@50.[264,1324,194,1630]" captionTargetPageId="50" captionText="FIGURES 443–498: LM micrographs. Figs 443–469. Hippodonta subelegans. Figs 470–481. Hippodonta acuta (type material). Figs 482–498. Hippodonta microcostulata. Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5072006" httpUri="https://zenodo.org/record/5072006/files/figure.png" pageId="32" pageNumber="33">Figs 470–481</figureCitation>
|
||
).
|
||
<taxonomicName id="49F34D732A53A41AFCA1FC59FBAA09F3" box="[872,1084,964,989]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="32" pageNumber="33" phylum="Bacillariophyta" rank="species" species="acus">
|
||
<emphasis id="BC87EAE22A53A41AFCA1FC59FBAA09F3" box="[872,1084,964,989]" italics="true" pageId="32" pageNumber="33">Hippodonta acus</emphasis>
|
||
</taxonomicName>
|
||
can be distinguished by the consistent presence of a well-developed panduriform fascia as well as by the more strongly pronounced interstriae throughout the valve length.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |