166 lines
23 KiB
XML
166 lines
23 KiB
XML
<document id="51A3382E9D3255414E2DFEFA66F55158" 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="065A87E62A6FA427FF5EFAF0FBFA0BC9" 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 subelegans Kulikovskiy, Lange-Bert. & Metzeltin" docType="treatment" docVersion="4" lastPageNumber="30" masterDocId="FA63FF9E2A73A43AFFC9FF9DFF960A2E" masterDocTitle="Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes" masterLastPageNumber="53" masterPageNumber="1" pageNumber="29" updateTime="1698991198074" updateUser="plazi" zenodo-license-document="CLOSED">
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<mods:title id="CF3955C75C3871812FFC06E2C3C89040">Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes</mods:title>
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<mods:namePart id="E0113F000BBCFE53D9181E0399A344A1">Pavlov, Aleksandar</mods:namePart>
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<mods:namePart id="A70A384079D64F2D4CED8413023FAA1D">Levkov, Zlatko</mods:namePart>
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<mods:namePart id="A2ABF9019EF2C7A90CAF3735ABA1E1D8">Williams, David M.</mods:namePart>
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<mods:namePart id="CD334E70CCA819DA46337AE7DDF18EBD">Edlund, Mark B.</mods:namePart>
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<mods:affiliation id="6E180B3CF42CBFED61738A2C44F48D02">St. Croix Watershed Research Station, Science Museum of Minnesota, Marine on St. Croix, Minnesota, USA.</mods:affiliation>
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<mods:title id="6A6E41608E99D8772FEC35DD0FF38545">Phytotaxa</mods:title>
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<mods:date id="121828E61292E3F21F64C433978A4E95">2013</mods:date>
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<mods:number id="8CEF04E31F85EC03CE960E88F76E14F9">2013-03-28</mods:number>
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<mods:number id="1069B513F52C206B6E4B14C3E3B9CC40">90</mods:number>
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<subSubSection id="C6E9657B2A6FA426FF5EFAF0FE6D0D24" pageId="28" pageNumber="29" type="nomenclature">
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<paragraph id="8E4C36F02A6FA426FF5EFAF0FB0E0FA9" blockId="28.[151,1176,1389,1415]" box="[151,1176,1389,1415]" pageId="28" pageNumber="29">
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<heading id="D504819C2A6FA426FF5EFAF0FB0E0FA9" box="[151,1176,1389,1415]" fontSize="11" level="2" pageId="28" pageNumber="29" reason="3">
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<taxonomicName id="49F34D732A6FA426FF5EFAF0FCF80FA9" authority="Kulikovskiy, Lange-Bert. & Metzeltin" authorityName="Kulikovskiy, Lange-Bert. & Metzeltin" box="[151,878,1389,1415]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="28" pageNumber="29" phylum="Bacillariophyta" rank="species" species="subelegans">
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<emphasis id="BC87EAE22A6FA426FF5EFAF0FE380FA9" bold="true" box="[151,430,1389,1415]" italics="true" pageId="28" pageNumber="29">Hippodonta subelegans</emphasis>
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Kulikovskiy, Lange-Bert. & Metzeltin
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</taxonomicName>
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(
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<figureCitation id="16C82A752A6FA426FCB4FAF0FB890FA9" box="[893,1055,1389,1415]" 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="28" pageNumber="29">Figs 443–469</figureCitation>
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,
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<figureCitation id="16C82A752A6FA426FBE3FAF0FB060FA9" box="[1066,1168,1389,1415]" 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="28" pageNumber="29">547, 548</figureCitation>
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)
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</heading>
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</paragraph>
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<paragraph id="8E4C36F02A6FA426FF5FFA27FE6D0D24" blockId="28.[150,1436,1466,2034]" pageId="28" pageNumber="29">
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Valves narrow-rhombic with narrow-cuneate to moderately rounded valve ends that are not protracted. Valve length
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<quantity id="490B9B152A6FA426FF23FA7CFE010FD5" box="[234,407,1505,1531]" metricMagnitude="-2" metricUnit="m" metricValue="2.335" metricValueMax="3.2399999999999998" metricValueMin="1.43" pageId="28" pageNumber="29" unit="mm" value="23.35" valueMax="32.4" valueMin="14.3">14.3–32.4 µm</quantity>
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, breadth 3.3–6.0 µm. Axial area narrow-linear, weakly broadened towards middle of valve, expanding into small elliptic, apically elongated central area. Terminal area small but clearly distinguishable in LM view, having a lunar shape. Raphe linear-filiform, with pronounced teardrop-shaped and closely spaced central pores. Terminal pores of raphe equally or less pronounced than central pores, simple, linear and weakly advancing into the terminal area. Striae coarse, strongly radiate at middle, becoming strongly convergent towards valve ends,
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<quantity id="490B9B152A6FA426FD45F93FFD600C92" box="[652,758,1698,1724]" metricMagnitude="-1" metricUnit="m" metricValue="3.302" metricValueMax="4.064" metricValueMin="2.54" pageId="28" pageNumber="29" unit="in" value="13.0" valueMax="16.0" valueMin="10.0">10–16 in</quantity>
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<quantity id="490B9B152A6FA426FCC9F93FFCC40C92" box="[768,850,1698,1724]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="28" pageNumber="29" unit="mm" value="10.0">10 µm</quantity>
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. Interstriae of lower width than striae, except at middle of valve where they are quite strongly pronounced. Lineolae composing striae densely spaced within a stria, not discernible with LM.
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</paragraph>
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</subSubSection>
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<subSubSection id="C6E9657B2A6FA426FF0FF88BFE1A0DE5" pageId="28" pageNumber="29" type="description">
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<paragraph id="8E4C36F02A6FA426FF0FF88BFE1A0DE5" blockId="28.[150,1436,1466,2034]" pageId="28" pageNumber="29">
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SEM: Externally, valve face flat (
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<figureCitation id="16C82A752A6FA426FDA1F88BFC8E0D1E" box="[616,792,1814,1840]" 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="28" pageNumber="29">Figs 547, 548</figureCitation>
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). Terminal area expanding strongly onto valve face. Terminal pores of raphe simple linear, weakly advancing into the terminal area. Central raphe endings pronounced, forming teardrop-shaped depressions. Striae uniseriate, lineolae quite narrow, long, rather boneshaped (
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<figureCitation id="16C82A752A6FA426FEC9F817FEE60D8A" box="[256,368,1930,1956]" 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="28" pageNumber="29">Fig. 548</figureCitation>
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). Lineolae density c.
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<quantity id="490B9B152A6FA426FD4AF817FD540D8A" box="[643,706,1930,1956]" metricMagnitude="0" metricUnit="m" metricValue="1.016" pageId="28" pageNumber="29" unit="in" value="40.0">40 in</quantity>
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<quantity id="490B9B152A6FA426FD04F817FC920D8A" box="[717,772,1930,1956]" metricMagnitude="1" metricUnit="m" metricValue="1.0" pageId="28" pageNumber="29" unit="m" value="10.0">10 µ</quantity>
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m. Rows of lineolae positioned on valve apices also uniseriate (
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<figureCitation id="16C82A752A6FA426FED0F82CFEE90DE5" box="[281,383,1969,1995]" 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="28" pageNumber="29">Fig. 547</figureCitation>
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).
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</paragraph>
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</subSubSection>
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<subSubSection id="C6E9657B2A6FA427FF0FF84AFBFA0BC9" lastPageId="29" lastPageNumber="30" pageId="28" pageNumber="29" type="distribution">
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<paragraph id="8E4C36F02A6FA427FF0FF84AFBCD0AD1" blockId="28.[150,1436,1466,2034]" lastBlockId="29.[151,1436,152,487]" lastPageId="29" lastPageNumber="30" pageId="28" pageNumber="29">
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<emphasis id="BC87EAE22A6FA426FF0FF84AFEC90DDF" bold="true" box="[198,351,2007,2033]" pageId="28" pageNumber="29">Distribution</emphasis>
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:—
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<taxonomicName id="49F34D732A6FA426FE4DF845FD0A0DDF" box="[388,668,2008,2033]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="28" pageNumber="29" phylum="Bacillariophyta" rank="species" species="subelegans">
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<emphasis id="BC87EAE22A6FA426FE4DF845FD0A0DDF" box="[388,668,2008,2033]" italics="true" pageId="28" pageNumber="29">Hippodonta subelegans</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="F6E476602A6FA426FB1FF845FAB20DDC" box="[1238,1316,2008,2034]" name="Russia" pageId="28" pageNumber="29">Russia</collectingCountry>
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and Lake
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<collectingRegion id="4C37F8122A6EA427FF5EFF05FE950A9C" box="[151,259,152,178]" country="Mongolia" name="Hovsgol" pageId="29" pageNumber="30">Hövsgöl</collectingRegion>
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,
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<collectingCountry id="F6E476602A6EA427FED8FF05FE1B0A9C" box="[273,397,152,178]" name="Mongolia" pageId="29" pageNumber="30">Mongolia</collectingCountry>
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. This species is found as quite abundant in the littoral of Lake Baikal, at different localities and at various depths (
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<quantity id="490B9B152A6EA427FDD2FF23FD040AF6" box="[539,658,190,216]" metricMagnitude="1" metricUnit="m" metricValue="1.04" metricValueMax="2.0" metricValueMin="0.08" pageId="29" pageNumber="30" unit="m" value="10.4" valueMax="20.0" valueMin="0.8">0.8–20 m</quantity>
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). In Lake
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<collectingRegion id="4C37F8122A6EA427FCC4FF23FCE30AF6" box="[781,885,190,216]" country="Mongolia" name="Hovsgol" pageId="29" pageNumber="30">Hövsgöl</collectingRegion>
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,
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<collectingCountry id="F6E476602A6EA427FC48FF23FC620AF6" box="[897,1012,190,216]" name="Mongolia" pageId="29" pageNumber="30">Mongolia</collectingCountry>
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<taxonomicName id="49F34D732A6EA427FC34FF22FB300AF6" box="[1021,1190,191,216]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="29" pageNumber="30" phylum="Bacillariophyta" rank="species" species="subelegans">
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<emphasis id="BC87EAE22A6EA427FC34FF22FB300AF6" box="[1021,1190,191,216]" italics="true" pageId="29" pageNumber="30">H. subelegans</emphasis>
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</taxonomicName>
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is found on shallow sandy substrates including Khilent Bulan bay (Edlund, unpublished observations).
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</paragraph>
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<paragraph id="8E4C36F02A6EA427FF0FFE96FBFA0BC9" blockId="29.[151,1436,152,487]" pageId="29" pageNumber="30">
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||
<emphasis id="BC87EAE22A6EA427FF0FFE96FEFA0B0B" bold="true" box="[198,364,267,293]" pageId="29" pageNumber="30">Observations</emphasis>
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:—Both morphological features and measurements of specimens in the population of
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<taxonomicName id="49F34D732A6EA427FAB6FE91FE8C0B65" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="29" pageNumber="30" phylum="Bacillariophyta" rank="species" species="subelegans">
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<emphasis id="BC87EAE22A6EA427FAB6FE91FA020B0B" box="[1407,1428,268,293]" italics="true" pageId="29" pageNumber="30">H</emphasis>
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.
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<emphasis id="BC87EAE22A6EA427FF5EFEAFFE8C0B65" box="[151,282,306,331]" italics="true" pageId="29" pageNumber="30">subelegans</emphasis>
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</taxonomicName>
|
||
depicted herein correspond well with the images from the protologue given in
|
||
<bibRefCitation id="EA624B012A6EA427FB0EFEAFFF490B5D" author="Kulikovskiy, M. & Lange-Bertalot, H. & Metzeltin D. & Witkowski, A." pageId="29" pageNumber="30" 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="BC87EAE22A6EA427FAA9FEAFFA0A0B65" box="[1376,1436,306,331]" italics="true" pageId="29" pageNumber="30">et al.</emphasis>
|
||
(2012
|
||
</bibRefCitation>
|
||
: figs 67: 26–29). With regard to valve outline and appearance of the striae,
|
||
<taxonomicName id="49F34D732A6EA427FBA9FEC4FA9E0B5C" box="[1120,1288,345,371]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="29" pageNumber="30" phylum="Bacillariophyta" rank="species" species="subelegans">
|
||
<emphasis id="BC87EAE22A6EA427FBA9FEC4FBE30B5C" box="[1120,1141,345,370]" italics="true" pageId="29" pageNumber="30">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A6EA427FB4CFEC4FA9E0B5C" box="[1157,1288,345,370]" italics="true" pageId="29" pageNumber="30">subelegans</emphasis>
|
||
</taxonomicName>
|
||
is similar to
|
||
<taxonomicName id="49F34D732A6EA427FF5EFE1DFD720BB4" authority="Lange-Bert., Metzeltin & Witkowski" authorityName="Lange-Bert., Metzeltin & Witkowski" box="[151,740,384,410]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="29" pageNumber="30" phylum="Bacillariophyta" rank="species" species="neglecta">
|
||
<emphasis id="BC87EAE22A6EA427FF5EFE1DFF3A0BB7" box="[151,172,384,409]" italics="true" pageId="29" pageNumber="30">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A6EA427FF75FE1DFEB70BB7" box="[188,289,384,409]" italics="true" pageId="29" pageNumber="30">neglecta</emphasis>
|
||
Lange-Bert., Metzeltin & Witkowski
|
||
</taxonomicName>
|
||
(1996: 262, 263, figs 4: 8–15) and a taxon named “
|
||
<taxonomicName id="49F34D732A6EA427FA91FE1DFF660BEE" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="29" pageNumber="30" phylum="Bacillariophyta" rank="species" species="avittata">
|
||
<emphasis id="BC87EAE22A6EA427FA91FE1DFAFB0BB7" box="[1368,1389,384,409]" italics="true" pageId="29" pageNumber="30">H</emphasis>
|
||
. cf.
|
||
<emphasis id="BC87EAE22A6EA427FF5EFE3AFF660BEE" box="[151,240,423,448]" italics="true" pageId="29" pageNumber="30">avittata</emphasis>
|
||
</taxonomicName>
|
||
” in
|
||
<bibRefCitation id="EA624B012A6EA427FEEDFE3BFDFC0BEE" author="Lange-Bertalot, H. & Metzeltin, D. & Witkowski, A." box="[292,618,422,448]" pageId="29" pageNumber="30" pagination="247 - 276" refId="ref27546" refString="Lange-Bertalot, H., Metzeltin, D. & Witkowski, A. (1996) Hippodonta gen. nov. Iconographia Diatomologica 4: 247 - 276." type="journal article" year="1996">
|
||
Lange-Bertalot
|
||
<emphasis id="BC87EAE22A6EA427FE17FE3AFD8F0BEE" box="[478,537,423,448]" italics="true" pageId="29" pageNumber="30">et al.</emphasis>
|
||
(1996
|
||
</bibRefCitation>
|
||
: figs 4: 35–40). Still, the latter two taxa have less radiate striae at the middle as well as more strongly pronounced interstriae throughout the valve length.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |