181 lines
20 KiB
XML
181 lines
20 KiB
XML
<document id="ECB92E905B711C3E8B82574ED264ADBF" ID-DOI="10.11646/phytotaxa.272.4.4" ID-ISSN="1179-3163" ID-Zenodo-Dep="13647319" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="GgImagineBatch" IM.taxonomicNames_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1725377825405" checkinUser="felipe" docAuthor="Pomazkina, Galina, Rodionova, Yelena, Sherbakova, Tatyana & Williams, David. M." docDate="2016" docId="03C13256B84CFF8123C9F3FDFE343F1A" docLanguage="en" docName="phytotaxa.272.4.4.pdf" docOrigin="Phytotaxa 272 (4)" docSource="http://dx.doi.org/10.11646/phytotaxa.272.4.4" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.13:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="13" docTitle="Petroplacus tectum Pomazkina, Rodionova, Sherbakova & D. M. Williams 2016, sp. nov." docType="treatment" docVersion="2" lastPageNumber="271" masterDocId="FFF84A2EB84FFF852341F539FFDF373C" masterDocTitle="Petroplacus gen. nov. (Bacillariophyta): a new genus of diatom from Lake Baikal" masterLastPageNumber="276" masterPageNumber="267" pageNumber="270" updateTime="1725382893688" updateUser="ExternalLinkService" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:titleInfo id="A030D15ADDB587EF821324D3F03D56DA">
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<mods:title id="F93094DB020A33F48D42B6AA08D650EB">Petroplacus gen. nov. (Bacillariophyta): a new genus of diatom from Lake Baikal</mods:title>
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<mods:name id="E64C7C37B0F45B45DF7C140E0C697909" type="personal">
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<mods:roleTerm id="E783A5665F899C5C8B4A88D63A7044E0">Author</mods:roleTerm>
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<mods:namePart id="5835D73683B530EE50E9839693AA10B4">Pomazkina, Galina</mods:namePart>
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<mods:namePart id="6DEE72414ACD4D21E337A802C86D176C">Rodionova, Yelena</mods:namePart>
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<mods:namePart id="5A61D974E26BB297201949205977241E">Sherbakova, Tatyana</mods:namePart>
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<mods:nameIdentifier id="FFE4FEB87D1C1B83139A5BFFE47B1265" type="email">tsherb@lin.irk.ru</mods:nameIdentifier>
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<mods:namePart id="0A9CD4D1904C68D9DEC2333EBF7CC081">Williams, David. M.</mods:namePart>
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<mods:typeOfResource id="07F62755C257ED7B7BAB76D37AA1B217">text</mods:typeOfResource>
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<mods:title id="64E609492BC0368E2073BA4AA27FDF9E">Phytotaxa</mods:title>
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<mods:part id="ECADCF6E3F9CA2BBC687EC43131D6626">
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<mods:date id="EC56A0016D0EFF68424DC8F517A2145C">2016</mods:date>
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<mods:number id="9561C6C7AEDBFAA276022CF18B82D6B0">2016-09-02</mods:number>
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<mods:number id="99512738C99C821BC969CFD3B1134879">272</mods:number>
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<mods:number id="39708B68FB74888310EBC2CA3EC9C98B">4</mods:number>
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<mods:url id="B94A970AB1CDCAF5B55504E7AD7EE5D3">http://dx.doi.org/10.11646/phytotaxa.272.4.4</mods:url>
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<mods:classification id="702849CD517E70ECE809024ACC797FDA">journal article</mods:classification>
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<mods:identifier id="9FF568CCA49335174FC52514FF969571" type="DOI">10.11646/phytotaxa.272.4.4</mods:identifier>
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<treatment id="03C13256B84CFF8123C9F3FDFE343F1A" ID-DOI="http://doi.org/10.5281/zenodo.13647331" ID-Zenodo-Dep="13647331" LSID="urn:lsid:plazi:treatment:03C13256B84CFF8123C9F3FDFE343F1A" httpUri="http://treatment.plazi.org/id/03C13256B84CFF8123C9F3FDFE343F1A" lastPageId="4" lastPageNumber="271" pageId="3" pageNumber="270">
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<subSubSection id="C372D0CBB84CFF8623C9F3FDFAE230C1" pageId="3" pageNumber="270" type="nomenclature">
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<paragraph id="8BD78340B84CFF8623C9F3FDFB3531E3" blockId="3.[136,1258,1732,1759]" box="[136,1258,1732,1759]" pageId="3" pageNumber="270">
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<heading id="D09F342CB84CFF8623C9F3FDFB3531E3" bold="true" box="[136,1258,1732,1759]" fontSize="11" level="1" pageId="3" pageNumber="270" reason="1">
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<emphasis id="B91C5F52B84CFF8623C9F3FDFB3531E3" bold="true" box="[136,1258,1732,1759]" pageId="3" pageNumber="270">
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<taxonomicName id="4C68F8C3B84CFF8623C9F3FDFC3131E3" authority="Pomazkina, Rodionova, Sherbakova & D.M.Williams" authorityName="Pomazkina, Rodionova, Sherbakova & D. M. Williams" authorityYear="2016" box="[136,1006,1732,1759]" class="Bacillariophyceae" family="Lyrellaceae" genus="Petroplacus" higherTaxonomySource="GBIF" kingdom="Chromista" order="Lyrellales" pageId="3" pageNumber="270" phylum="Ochrophyta" rank="species" species="tectum" status="sp. nov.">
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<emphasis id="B91C5F52B84CFF8623C9F3FDFEB931E3" bold="true" box="[136,358,1732,1759]" italics="true" pageId="3" pageNumber="270">Petroplacus tectum</emphasis>
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Pomazkina, Rodionova, Sherbakova & D.M.Williams
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</taxonomicName>
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,
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<taxonomicNameLabel id="A22FE229B84CFF8620BBF3FCFB8E31E3" box="[1018,1105,1733,1759]" pageId="3" pageNumber="270" rank="species">
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||
<emphasis id="B91C5F52B84CFF8620BBF3FCFBCC31E3" bold="true" box="[1018,1043,1733,1759]" italics="true" pageId="3" pageNumber="270">sp</emphasis>
|
||
.
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||
<emphasis id="B91C5F52B84CFF862761F3FCFB9531E3" bold="true" box="[1056,1098,1733,1759]" italics="true" pageId="3" pageNumber="270">nov</emphasis>
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.
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</taxonomicNameLabel>
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(
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||
<figureCitation id="13539FC5B84CFF862721F3FFFB3C31E3" box="[1120,1251,1734,1759]" captionStart="FIGURES 23–32" captionStartId="5.[136,243,1403,1424]" captionTargetBox="[365,1215,193,1375]" captionTargetId="figure-14@5.[361,1227,190,1379]" captionTargetPageId="5" captionText="FIGURES 23–32. Petroplacus tectum from type material. 23–25. LM views showing variation of valve size. Figure 23 is the holotype. 26–32. SEM Petroplacus tectum from type material. 26, 28, 29. SEM external views of entire valve showing raphe and striae structure. 26. SEM external view showing the constriction in the centre of the valve (arrow). 28. SEM external detail of proximal raphe endings, expanded into T-shaped grooves, uniseriate striae. 29. SEM external detail of terminal fissure, uniseriate striae. 27, 30−32. SEM internal views of entire valve showing raphe and striae structure. 27. SEM internal view showing the constriction in the centre of the valve (arrow). 30. SEM internal detail of valve centre with proximal raphe endings, volate occlusions of pores. 31. SEM internal detail of valve apex with helictoglossa. 32. SEM internal view showing intercalary striae, round pores occluded by volae. Scale bars = 10 μm (Figs 23–27), 5 μm (Figs 28−31), 1 μm (Fig. 32)." figureDoi="http://doi.org/10.5281/zenodo.13647325" httpUri="https://zenodo.org/record/13647325/files/figure.png" pageId="3" pageNumber="270">Figs 23–32</figureCitation>
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)
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</emphasis>
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</heading>
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</paragraph>
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<paragraph id="8BD78340B84CFF8623C9F229FAE230C1" blockId="3.[136,1452,1808,2045]" pageId="3" pageNumber="270">
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LM: Valves linear broad with central constriction, protracted rostrate ends, 32–47 μm long, 18–21 μm wide. Axial area linear, widening towards valve centre, forming a transversely elongated rectangular central area. Raphe straight; external central raphe endings direct, expanding into T-shaped grooves. Transapical striae radiate, 12–16 at valve centre,
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<quantity id="4C902EA5B84CFF86209BF261FBF13051" box="[986,1070,1880,1901]" metricMagnitude="-1" metricUnit="m" metricValue="4.953" metricValueMax="5.588" metricValueMin="4.318" pageId="3" pageNumber="270" unit="in" value="19.5" valueMax="22.0" valueMin="17.0">17–22 in</quantity>
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10 μm at apices; irregular shorter striae at valve edge between main striae; striae composed of small round poroids,
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<quantity id="4C902EA5B84CFF8620D1F245FC3A30AD" box="[912,997,1916,1937]" metricMagnitude="-1" metricUnit="m" metricValue="5.588" metricValueMax="5.842" metricValueMin="5.334" pageId="3" pageNumber="270" unit="in" value="22.0" valueMax="23.0" valueMin="21.0">21–23 in</quantity>
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10 μm. SEM: Valve face flat, turning gradually toward shallow mantle. Externally, central raphe endings direct, expanding into T-shaped groove. Terminal fissures deflected bluntly to same side. Internally, central raphe endings straight, filiform; distal endings slightly bent from centre, terminating as simple helictoglossae. Areolae occluded internally by simple volae, which touching neighboring volae forming chains for stria.
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</paragraph>
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||
</subSubSection>
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||
<caption id="DF17D3C8B84BFF8123C9F0F6FCAA3180" ID-DOI="http://doi.org/10.5281/zenodo.13647323" ID-Zenodo-Dep="13647323" httpUri="https://zenodo.org/record/13647323/files/figure.png" pageId="4" pageNumber="271" startId="4.[136,243,1487,1508]" targetBox="[250,1336,191,1462]" targetPageId="4" targetType="figure">
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||
<paragraph id="8BD78340B84BFF8123C9F0F6FCAA3180" blockId="4.[136,1452,1487,1724]" pageId="4" pageNumber="271">
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<emphasis id="B91C5F52B84BFF8123C9F0F6FEE232D8" bold="true" box="[136,317,1487,1508]" pageId="4" pageNumber="271">FIGURES 13–22.</emphasis>
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Scanning electron micrographs.
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<taxonomicName id="4C68F8C3B84BFF8121C4F0F6FCF132D8" box="[645,814,1487,1508]" class="Bacillariophyceae" family="Lyrellaceae" genus="Petroplacus" higherTaxonomySource="GBIF" kingdom="Chromista" order="Lyrellales" pageId="4" pageNumber="271" phylum="Ochrophyta" rank="species" species="lizae">
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<emphasis id="B91C5F52B84BFF8121C4F0F6FCF132D8" box="[645,814,1487,1508]" italics="true" pageId="4" pageNumber="271">Petroplacus lizae</emphasis>
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</taxonomicName>
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||
from type material. 13−16. SEM external views of entire valve showing raphe and striae structure. 14. SEM external detail of valve centre with proximal raphe endings expanded into T-shaped grooves, uniseriate striae. 15, 16. SEM external detail of valve apex with terminal fissures. 19–22. SEM views of entire valve showing raphe and striae structure. 20. SEM internal detail of valve centre with proximal raphe endings, volate occlusions of the areolae. 21. SEM internal detail of valve apex with helictoglossa, round pores occluded by volae. 22. SEM internal detail of broken valve showing the pores apertures. 17. SEM detail of girdle band with a single row of pores. 18. SEM detail of two girdle bands. Scale bars = 10 μm (Figs 13, 19), 3 μm (Figs 14, 20, 21), 5 μm (Figs 17–18), 2 μm (Fig.22), 1 μm (Figs 15–16).
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</paragraph>
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||
</caption>
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||
<subSubSection id="C372D0CBB84BFF8123C9F3D6FC203070" pageId="4" pageNumber="271" type="materials_examined">
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||
<paragraph id="8BD78340B84BFF8123C9F3D6FC203070" blockId="4.[136,1452,1775,1868]" pageId="4" pageNumber="271">
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||
<emphasis id="B91C5F52B84BFF8123C9F3D6FF053038" bold="true" box="[136,218,1775,1796]" pageId="4" pageNumber="271">Type:—</emphasis>
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<materialsCitation id="3B00891DB84BFF81239BF3D6FC243070" collectionCode="RAS, BM" collectorName="Limnological Institute SB & Russia" country="Russia" county="Lake Baikal" location="Cape Elokhin" municipality="Northern" pageId="4" pageNumber="271" specimenCount="2" stateProvince="Irkutsk" typeStatus="holotype">
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||
<collectingCountry id="F37FC3D0B84BFF81239BF3D6FEEC3038" box="[218,307,1775,1796]" name="Russia" pageId="4" pageNumber="271">RUSSIA</collectingCountry>
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||
.
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||
<collectingCounty id="62B6FBCCB84BFF81227DF3D6FE6B3038" box="[316,436,1775,1796]" pageId="4" pageNumber="271">Lake Baikal</collectingCounty>
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||
:
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<collectingMunicipality id="6BB3193AB84BFF8122FFF3D6FDCA3038" box="[446,533,1775,1796]" pageId="4" pageNumber="271">Northern</collectingMunicipality>
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basin,
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<location id="8EB7D59BB84BFF81211BF3D6FD3E3038" LSID="urn:lsid:plazi:treatment:03C13256B84CFF8123C9F3FDFE343F1A:8EB7D59BB84BFF81211BF3D6FD3E3038" box="[602,737,1775,1796]" country="Russia" county="Lake Baikal" municipality="Northern" name="Cape Elokhin" pageId="4" pageNumber="271" stateProvince="Irkutsk">Cape Elokhin</location>
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, sand sample collected by diver in the littoral zone at st. 12,
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<emphasis id="B91C5F52B84BFF812668F3D6FA743038" box="[1321,1451,1775,1796]" italics="true" pageId="4" pageNumber="271">
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||
29
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||
<location id="8EB7D59BB84BFF812609F3D6FAAA3038" LSID="urn:lsid:plazi:treatment:03C13256B84CFF8123C9F3FDFE343F1A:8EB7D59BB84BFF812609F3D6FAAA3038" box="[1352,1397,1775,1796]" country="Russia" county="Lake Baikal" municipality="Northern" name="June" pageId="4" pageNumber="271" stateProvince="Irkutsk">June</location>
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||
1997
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</emphasis>
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||
(
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<typeStatus id="54D33DE2B84BFF812385F22AFEC23014" box="[196,285,1811,1832]" pageId="4" pageNumber="271" type="holotype">holotype</typeStatus>
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||
: slide 0043-BK housed at the
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||
<collectorName id="269DE696B84BFF812105F22AFCE03014" box="[580,831,1811,1832]" pageId="4" pageNumber="271">Limnological Institute SB</collectorName>
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||
<collectionCode id="ED791B85B84BFF812007F22AFCA83014" box="[838,887,1811,1832]" country="Myanmar" httpUri="http://biocol.org/urn:lsid:biocol.org:col:14256" lsid="urn:lsid:biocol.org:col:14256" name="Union of Burma Applied Research Institute" pageId="4" pageNumber="271" type="Herbarium">RAS</collectionCode>
|
||
,
|
||
<collectingRegion id="49AC4DA2B84BFF8120C3F22AFC163014" box="[898,969,1811,1832]" country="Russia" name="Irkutsk" pageId="4" pageNumber="271">Irkutsk</collectingRegion>
|
||
, Russia, here illustrated as
|
||
<figureCitation id="13539FC5B84BFF812793F22AFAC53014" box="[1234,1306,1811,1832]" captionStart="FIGURES 23–32" captionStartId="5.[136,243,1403,1424]" captionTargetBox="[365,1215,193,1375]" captionTargetId="figure-14@5.[361,1227,190,1379]" captionTargetPageId="5" captionText="FIGURES 23–32. Petroplacus tectum from type material. 23–25. LM views showing variation of valve size. Figure 23 is the holotype. 26–32. SEM Petroplacus tectum from type material. 26, 28, 29. SEM external views of entire valve showing raphe and striae structure. 26. SEM external view showing the constriction in the centre of the valve (arrow). 28. SEM external detail of proximal raphe endings, expanded into T-shaped grooves, uniseriate striae. 29. SEM external detail of terminal fissure, uniseriate striae. 27, 30−32. SEM internal views of entire valve showing raphe and striae structure. 27. SEM internal view showing the constriction in the centre of the valve (arrow). 30. SEM internal detail of valve centre with proximal raphe endings, volate occlusions of pores. 31. SEM internal detail of valve apex with helictoglossa. 32. SEM internal view showing intercalary striae, round pores occluded by volae. Scale bars = 10 μm (Figs 23–27), 5 μm (Figs 28−31), 1 μm (Fig. 32)." figureDoi="http://doi.org/10.5281/zenodo.13647325" httpUri="https://zenodo.org/record/13647325/files/figure.png" pageId="4" pageNumber="271">Fig. 23</figureCitation>
|
||
.
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||
<typeStatus id="54D33DE2B84BFF812665F22AFAA73014" box="[1316,1400,1811,1832]" pageId="4" pageNumber="271" type="isotype">Isotypes</typeStatus>
|
||
: BK! slide 0043 (st. 12),
|
||
<collectorName id="269DE696B84BFF812236F20EFDAF3070" box="[375,624,1847,1868]" pageId="4" pageNumber="271">Limnological Institute SB</collectorName>
|
||
<collectionCode id="ED791B85B84BFF812137F20EFD783070" box="[630,679,1847,1868]" country="Myanmar" httpUri="http://biocol.org/urn:lsid:biocol.org:col:14256" lsid="urn:lsid:biocol.org:col:14256" name="Union of Burma Applied Research Institute" pageId="4" pageNumber="271" type="Herbarium">RAS</collectionCode>
|
||
,
|
||
<collectingRegion id="49AC4DA2B84BFF8121F0F20EFD273070" box="[689,760,1847,1868]" country="Russia" name="Irkutsk" pageId="4" pageNumber="271">Irkutsk</collectingRegion>
|
||
,
|
||
<collectorName id="269DE696B84BFF812040F20EFC9B3070" box="[769,836,1847,1868]" pageId="4" pageNumber="271">Russia</collectorName>
|
||
;
|
||
<collectionCode id="ED791B85B84BFF81200CF20EFCA83070" box="[845,887,1847,1868]" country="United Kingdom" name="Bristol Museum" pageId="4" pageNumber="271">BM</collectionCode>
|
||
! slide 10053)
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||
</materialsCitation>
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||
.
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||
</paragraph>
|
||
</subSubSection>
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||
<subSubSection id="C372D0CBB84BFF8123C9F244FDAD30AA" box="[136,626,1917,1942]" pageId="4" pageNumber="271" type="etymology">
|
||
<paragraph id="8BD78340B84BFF8123C9F244FDAD30AA" blockId="4.[136,1451,1917,2086]" box="[136,626,1917,1942]" pageId="4" pageNumber="271">
|
||
<emphasis id="B91C5F52B84BFF8123C9F244FEF130AA" bold="true" box="[136,302,1917,1942]" pageId="4" pageNumber="271">Etymology:—</emphasis>
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||
<emphasis id="B91C5F52B84BFF81226FF244FEA130AA" box="[302,382,1917,1942]" italics="true" pageId="4" pageNumber="271">Tectum</emphasis>
|
||
(L.) means “hidden”.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C372D0CBB84BFF8123FCF298FCAB3086" box="[189,884,1953,1978]" pageId="4" pageNumber="271" type="distribution">
|
||
<paragraph id="8BD78340B84BFF8123FCF298FCAB3086" blockId="4.[136,1451,1917,2086]" box="[189,884,1953,1978]" pageId="4" pageNumber="271">
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||
<emphasis id="B91C5F52B84BFF8123FCF298FEAA3086" bold="true" box="[189,373,1953,1978]" pageId="4" pageNumber="271">Distribution:—</emphasis>
|
||
Only known from the
|
||
<typeStatus id="54D33DE2B84BFF81212FF298FD413086" box="[622,670,1953,1978]" pageId="4" pageNumber="271">type</typeStatus>
|
||
locality; very rare.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C372D0CBB84BFF8123FCF2FCFE343F1A" pageId="4" pageNumber="271" type="discussion">
|
||
<paragraph id="8BD78340B84BFF8123FCF2FCFE343F1A" blockId="4.[136,1451,1917,2086]" pageId="4" pageNumber="271">
|
||
<emphasis id="B91C5F52B84BFF8123FCF2FCFEF530E2" bold="true" box="[189,298,1989,2014]" pageId="4" pageNumber="271">Remarks</emphasis>
|
||
:—Specimens of
|
||
<taxonomicName id="4C68F8C3B84BFF8122B2F2FCFDBF30E2" authorityName="Pomazkina, Rodionova, Sherbakova & D. M. Williams" authorityYear="2016" box="[499,608,1989,2014]" class="Bacillariophyceae" family="Lyrellaceae" genus="Petroplacus" higherTaxonomySource="GBIF" kingdom="Chromista" order="Lyrellales" pageId="4" pageNumber="271" phylum="Ochrophyta" rank="species" species="tectum">
|
||
<emphasis id="B91C5F52B84BFF8122B2F2FCFDDB30E2" box="[499,516,1989,2014]" italics="true" pageId="4" pageNumber="271">P</emphasis>
|
||
.
|
||
<emphasis id="B91C5F52B84BFF812154F2FCFDBF30E2" box="[533,608,1989,2014]" italics="true" pageId="4" pageNumber="271">tectum</emphasis>
|
||
</taxonomicName>
|
||
differ from
|
||
<taxonomicName id="4C68F8C3B84BFF8121B3F2FCFC9630E2" box="[754,841,1989,2014]" class="Bacillariophyceae" family="Lyrellaceae" genus="Petroplacus" higherTaxonomySource="GBIF" kingdom="Chromista" order="Lyrellales" pageId="4" pageNumber="271" phylum="Ochrophyta" rank="species" species="lizae">
|
||
<emphasis id="B91C5F52B84BFF8121B3F2FCFCDC30E2" box="[754,771,1989,2014]" italics="true" pageId="4" pageNumber="271">P</emphasis>
|
||
.
|
||
<emphasis id="B91C5F52B84BFF812055F2FCFC9630E2" box="[788,841,1989,2014]" italics="true" pageId="4" pageNumber="271">lizae</emphasis>
|
||
</taxonomicName>
|
||
in outline by the central constriction, the number of areolae in a stria (21–23 against
|
||
<quantity id="4C902EA5B84BFF8122B2F2D0FD893F3E" box="[499,598,2025,2050]" metricMagnitude="0" metricUnit="m" metricValue="1.0668" metricValueMax="1.2446" metricValueMin="0.889" pageId="4" pageNumber="271" unit="in" value="42.0" valueMax="49.0" valueMin="35.0">35–49 in</quantity>
|
||
10 μm), in the form of the T-shaped groove and the larger valve size (
|
||
<quantity id="4C902EA5B84BFF812625F2D0FF413F1A" metricMagnitude="0" metricUnit="m" metricValue="1.0032999999999999" metricValueMax="1.1938" metricValueMin="0.8128" pageId="4" pageNumber="271" unit="in" value="39.5" valueMax="47.0" valueMin="32.0">32–47 in</quantity>
|
||
comparison with 25–35 μm).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |