389 lines
85 KiB
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389 lines
85 KiB
XML
<document id="93E87C5FBD54479DE1E27A118D21D036" ID-CLB-Dataset="300707" ID-DOI="10.11646/phytotaxa.644.2.3" ID-GBIF-Dataset="1efa6cc0-6313-420f-9396-da89584db938" ID-ISSN="1179-3163" ID-Zenodo-Dep="13214603" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.tables_requiresApprovalFor="GgImagineBatch" IM.taxonomicNames_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1722597004203" checkinUser="felipe" docAuthor="Yi, Man-Qi, Liu, Bing, Rioual, Patrick, Lei, Qin & Ma, Yi-Dan" docDate="2024" docId="038887D7AB66730BFF45F8DAFC1FFC25" docLanguage="en" docName="phytotaxa.644.2.3.pdf" docOrigin="Phytotaxa 644 (2)" docSource="http://dx.doi.org/10.11646/phytotaxa.644.2.3" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.13:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="13" docTitle="Gyrosigma dongtingense Bing Liu & Rioual, sp. nov." docType="treatment" docVersion="2" lastPageNumber="117" masterDocId="FFB1FFAFAB67730EFFCDFF8EFF9CFD01" masterDocTitle="Gyrosigma dongtingense sp. nov. (Bacillariophyta) from Dongting Lake, China" masterLastPageNumber="123" masterPageNumber="113" pageNumber="114" updateTime="1722806987400" updateUser="ExternalLinkService" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="BBA46267CD5A13D36E9367F2E8812559">Gyrosigma dongtingense sp. nov. (Bacillariophyta) from Dongting Lake, China</mods:title>
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<mods:namePart id="5A3466A615CE99937F0838B3373C1D38">Yi, Man-Qi</mods:namePart>
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<mods:affiliation id="58CA7421C1205DC279B8D390738FDE9E">College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China</mods:affiliation>
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<mods:nameIdentifier id="989B45420B028DF0893CB342A35160DF" type="email">810847692@qq.com</mods:nameIdentifier>
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<mods:namePart id="DEC4439ACCE59DDC9789539C170E2712">Liu, Bing</mods:namePart>
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<mods:affiliation id="E0E768DF64719864E51D2846406A8200">College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China</mods:affiliation>
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<mods:nameIdentifier id="19542D8776AD739B8149D23171AF0996" type="email">jsulb@outlook.com</mods:nameIdentifier>
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<mods:namePart id="8847A69D8CE73CA95F0CC7DD8D9C4AE5">Rioual, Patrick</mods:namePart>
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<mods:affiliation id="E63068E1AA2D72DFD634FDEA0DAA2C4C">Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, P. O. box 9825, Beijing 100029, China & CAS Center for Excellence in Life and Paleoenvironment, Beijing 100044, China</mods:affiliation>
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<mods:nameIdentifier id="C88241D11CE3E4018B3FF73C3B57BECC" type="email">prioual@mail.iggcas.ac.cn</mods:nameIdentifier>
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<mods:namePart id="A632DE8919A3D29B80606C93E9682A0A">Lei, Qin</mods:namePart>
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<mods:affiliation id="6E7CB7A4845B53AA35F1DC9FFF3EE5CE">College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China</mods:affiliation>
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<mods:namePart id="B47646F5059A96AAD10DF273A964C9CD">Ma, Yi-Dan</mods:namePart>
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<mods:title id="FFC1184C8E1BA8C3E64C013AE67873A0">Phytotaxa</mods:title>
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<mods:date id="FDA712EB6AC394C60793A9A69499CCA9">2024</mods:date>
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<treatment id="038887D7AB66730BFF45F8DAFC1FFC25" ID-DOI="http://doi.org/10.5281/zenodo.13213498" ID-GBIF-Taxon="237647143" ID-Zenodo-Dep="13213498" LSID="urn:lsid:plazi:treatment:038887D7AB66730BFF45F8DAFC1FFC25" httpUri="http://treatment.plazi.org/id/038887D7AB66730BFF45F8DAFC1FFC25" lastPageId="5" lastPageNumber="117" pageId="1" pageNumber="114">
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<subSubSection id="C33B654AAB66730FFF45F8DAFCE8FA6F" box="[136,884,1876,1903]" pageId="1" pageNumber="114" type="nomenclature">
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<heading id="D0D681ADAB66730FFF45F8DAFCE8FA6F" bold="true" box="[136,884,1876,1903]" fontSize="11" level="1" pageId="1" pageNumber="114" reason="1">
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<taxonomicName id="4C214D42AB66730FFF45F8DAFD17FA6F" authority="Bing Liu & Rioual" authorityName="Bing Liu & Rioual" box="[136,651,1876,1903]" class="Bacillariophyceae" family="Naviculaceae" genus="Gyrosigma" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="1" pageNumber="114" phylum="Bacillariophyta" rank="species" species="dongtingense" status="sp. nov.">
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<emphasis id="B955EAD3AB66730FFF45F8DAFE3BFA6E" bold="true" box="[136,423,1876,1903]" italics="true" pageId="1" pageNumber="114">Gyrosigma dongtingense</emphasis>
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Bing Liu & Rioual
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</taxonomicName>
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<emphasis id="B955EAD3AB66730FFD5EF8DAFD75FA6F" bold="true" box="[659,745,1876,1902]" italics="true" pageId="1" pageNumber="114">
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<taxonomicNameLabel id="A26657A8AB66730FFD5EF8DAFD75FA6F" box="[659,745,1876,1902]" pageId="1" pageNumber="114" rank="species">sp. nov.</taxonomicNameLabel>
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</emphasis>
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(
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<figureCitation id="131A2A44AB66730FFD35F8DAFCF0FA6F" box="[760,876,1876,1902]" captionStart-0="FIGURES 1–4" captionStart-1="FIGURES 5–10" captionStart-2="FIGURES 11–16" captionStart-3="FIGURES 17–22" captionStart-4="FIGURES 23–28" captionStartId-0="2.[136,243,1737,1759]" captionStartId-1="3.[136,243,1099,1121]" captionStartId-2="4.[136,243,1689,1711]" captionStartId-3="5.[136,243,1815,1837]" captionStartId-4="6.[136,243,1688,1710]" captionTargetBox-0="[151,1435,314,1710]" captionTargetBox-1="[151,1435,281,1074]" captionTargetBox-2="[151,1436,190,1665]" captionTargetBox-3="[151,1435,317,1791]" captionTargetBox-4="[151,1435,190,1664]" captionTargetId-0="figure-105@2.[151,1435,314,1710]" captionTargetId-1="figure-74@3.[151,1435,281,1074]" captionTargetId-2="figure-33@4.[151,1436,190,1665]" captionTargetId-3="figure-88@5.[151,1435,317,1791]" captionTargetId-4="figure-33@6.[151,1435,190,1664]" captionTargetPageId-0="2" captionTargetPageId-1="3" captionTargetPageId-2="4" captionTargetPageId-3="5" captionTargetPageId-4="6" captionText-0="FIGURES 1–4. Gyrosigma dongtingense, sp. nov., LM, ×630. 1–4. Four valves showing two different types: S-shaped valve (Figs 1, 2) and Ƨ-shaped (reverse S-shaped) valve (Figs 3, 4). 1. Illustration of holotype specimen. Note the convex and concave sides of each halfvalve (labelled in Fig. 3) and the two curvatures of each half of the raphe sternum (labelled in Fig. 4). Scale bar = 20 μm." captionText-1="FIGURES 5–10. Gyrosigma dongtingense, sp. nov., LM, ×1000. 5–7 and 8–10. Magnifications from Fig. 1 and Fig.2, respectively, showing details of the valve middle part and apices. Scale bar = 10 μm." captionText-2="FIGURES 11–16. Gyrosigma dongtingense, sp. nov., SEM. 11, 13. Two valve types, either S-shaped or Ƨ-shaped, in external view. 12, 14. Middle part details from Fig. 11 and Fig. 13, respectively, note that both external proximal raphe fissures are deflected towards the convex side of each half-valve. 15, 16. Two valve types, either S-shaped or Ƨ-shaped, in internal view. Note the axial costa (four wavy arrows) along the raphe sternum. Scale bar = 10 μm (Figs 11–16)." captionText-3="FIGURES 17–22. Gyrosigma dongtingense, sp. nov., SEM. 17–19. Three valve middle parts in external view showing the rotated central areas (e.g., Fig. 17, double-headed arrow), the outer proximal raphe fissures deflected in opposite directions (two arrows in Figs 17–19, respectively). 20–22. Three valve middle parts in internal view showing the two central bars (e.g., Fig. 18, two arrows), the T-shaped inner proximal endings (e.g., Fig. 19, two arrows), and the fusiform central nodule (e.g., Fig. 20, double-headed arrow). Scale bar = 1 μm (Figs 15–20)." captionText-4="FIGURES 23–28. Gyrosigma dongtingense, sp. nov., SEM. 23, 24. Two apices in external view showing the apical field pores, i.e., an isolated row of pores (arrows), a row of rounded areolae (arrowheads), and the triangle terminal area (asterisks). 25, 26. Two apices in internal view showing the apical field pores (e.g., arrows, Fig. 24), a row of rounded areolae (arrowheads), the triangle-shaped terminal area (asterisks), the axial costa (wavy arrows), and a groove (double-headed arrows) between the primary side (#'s) of the raphe sternum and the axial costa (wavy arrows). 27, 28. Two apices at lower magnification showing the more developed primary side of the sternum (Fig. 27, double-headed arrow, external view; Fig. 28, arrows, internal view), the internal axial costa (Fig. 28, wavy arrows), and the groove between the primary side of the raphe sternum and the axial costa. Scale bar = 1 μm (Figs 21–24), 10 μm (Figs 25, 26)." figureDoi-0="http://doi.org/10.5281/zenodo.13214605" figureDoi-1="http://doi.org/10.5281/zenodo.13214607" figureDoi-2="http://doi.org/10.5281/zenodo.13214609" figureDoi-3="http://doi.org/10.5281/zenodo.13214611" figureDoi-4="http://doi.org/10.5281/zenodo.13214613" httpUri-0="https://zenodo.org/record/13214605/files/figure.png" httpUri-1="https://zenodo.org/record/13214607/files/figure.png" httpUri-2="https://zenodo.org/record/13214609/files/figure.png" httpUri-3="https://zenodo.org/record/13214611/files/figure.png" httpUri-4="https://zenodo.org/record/13214613/files/figure.png" pageId="1" pageNumber="114">Figs 1–28</figureCitation>
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)
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</emphasis>
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection id="C33B654AAB66730DFF45F812FE93FBEB" lastPageId="3" lastPageNumber="116" pageId="1" pageNumber="114" type="description">
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<paragraph id="8B9E36C1AB66730CFF45F812FCFCFC24" blockId="1.[136,1452,1948,2083]" lastBlockId="2.[136,1452,158,293]" lastPageId="2" lastPageNumber="115" pageId="1" pageNumber="114">
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<emphasis id="B955EAD3AB66730FFF45F812FE80FAB7" bold="true" box="[136,284,1948,1974]" pageId="1" pageNumber="114">Description:</emphasis>
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—LM (
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<figureCitation id="131A2A44AB66730FFEBCF812FE7AFAB7" box="[369,486,1948,1974]" captionStart-0="FIGURES 1–4" captionStart-1="FIGURES 5–10" captionStartId-0="2.[136,243,1737,1759]" captionStartId-1="3.[136,243,1099,1121]" captionTargetBox-0="[151,1435,314,1710]" captionTargetBox-1="[151,1435,281,1074]" captionTargetId-0="figure-105@2.[151,1435,314,1710]" captionTargetId-1="figure-74@3.[151,1435,281,1074]" captionTargetPageId-0="2" captionTargetPageId-1="3" captionText-0="FIGURES 1–4. Gyrosigma dongtingense, sp. nov., LM, ×630. 1–4. Four valves showing two different types: S-shaped valve (Figs 1, 2) and Ƨ-shaped (reverse S-shaped) valve (Figs 3, 4). 1. Illustration of holotype specimen. Note the convex and concave sides of each halfvalve (labelled in Fig. 3) and the two curvatures of each half of the raphe sternum (labelled in Fig. 4). Scale bar = 20 μm." captionText-1="FIGURES 5–10. Gyrosigma dongtingense, sp. nov., LM, ×1000. 5–7 and 8–10. Magnifications from Fig. 1 and Fig.2, respectively, showing details of the valve middle part and apices. Scale bar = 10 μm." figureDoi-0="http://doi.org/10.5281/zenodo.13214605" figureDoi-1="http://doi.org/10.5281/zenodo.13214607" httpUri-0="https://zenodo.org/record/13214605/files/figure.png" httpUri-1="https://zenodo.org/record/13214607/files/figure.png" pageId="1" pageNumber="114">Figs 1–10</figureCitation>
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). Cells solitary and usually lie in valve view on a slide. Valve outline is of
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<specimenCount id="9D27FD48AB66730FFAFAF813FA3BFAB6" box="[1335,1447,1949,1975]" count="2" pageId="1" pageNumber="114" type="generic" typeStatus="types">two types</specimenCount>
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: one is S-shaped (
|
||
<figureCitation id="131A2A44AB66730FFE9EF84EFE5CFADB" box="[339,448,1984,2010]" captionStart="FIGURES 1–4" captionStartId="2.[136,243,1737,1759]" captionTargetBox="[151,1435,314,1710]" captionTargetId="figure-105@2.[151,1435,314,1710]" captionTargetPageId="2" captionText="FIGURES 1–4. Gyrosigma dongtingense, sp. nov., LM, ×630. 1–4. Four valves showing two different types: S-shaped valve (Figs 1, 2) and Ƨ-shaped (reverse S-shaped) valve (Figs 3, 4). 1. Illustration of holotype specimen. Note the convex and concave sides of each halfvalve (labelled in Fig. 3) and the two curvatures of each half of the raphe sternum (labelled in Fig. 4). Scale bar = 20 μm." figureDoi="http://doi.org/10.5281/zenodo.13214605" httpUri="https://zenodo.org/record/13214605/files/figure.png" pageId="1" pageNumber="114">Figs 1, 2</figureCitation>
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||
,
|
||
<figureCitation id="131A2A44AB66730FFE1DF84EFD86FADA" box="[464,538,1984,2011]" captionStart="FIGURES 11–16" captionStartId="4.[136,243,1689,1711]" captionTargetBox="[151,1436,190,1665]" captionTargetId="figure-33@4.[151,1436,190,1665]" captionTargetPageId="4" captionText="FIGURES 11–16. Gyrosigma dongtingense, sp. nov., SEM. 11, 13. Two valve types, either S-shaped or Ƨ-shaped, in external view. 12, 14. Middle part details from Fig. 11 and Fig. 13, respectively, note that both external proximal raphe fissures are deflected towards the convex side of each half-valve. 15, 16. Two valve types, either S-shaped or Ƨ-shaped, in internal view. Note the axial costa (four wavy arrows) along the raphe sternum. Scale bar = 10 μm (Figs 11–16)." figureDoi="http://doi.org/10.5281/zenodo.13214609" httpUri="https://zenodo.org/record/13214609/files/figure.png" pageId="1" pageNumber="114">11, 15</figureCitation>
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||
) and the other is Ƨ-shaped (reverse S-shaped) (
|
||
<figureCitation id="131A2A44AB66730FFB87F84EFB2AFADB" box="[1098,1206,1984,2010]" captionStart="FIGURES 1–4" captionStartId="2.[136,243,1737,1759]" captionTargetBox="[151,1435,314,1710]" captionTargetId="figure-105@2.[151,1435,314,1710]" captionTargetPageId="2" captionText="FIGURES 1–4. Gyrosigma dongtingense, sp. nov., LM, ×630. 1–4. Four valves showing two different types: S-shaped valve (Figs 1, 2) and Ƨ-shaped (reverse S-shaped) valve (Figs 3, 4). 1. Illustration of holotype specimen. Note the convex and concave sides of each halfvalve (labelled in Fig. 3) and the two curvatures of each half of the raphe sternum (labelled in Fig. 4). Scale bar = 20 μm." figureDoi="http://doi.org/10.5281/zenodo.13214605" httpUri="https://zenodo.org/record/13214605/files/figure.png" pageId="1" pageNumber="114">Figs 3, 4</figureCitation>
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,
|
||
<figureCitation id="131A2A44AB66730FFB0BF84EFA8FFADB" box="[1222,1299,1984,2010]" captionStart="FIGURES 11–16" captionStartId="4.[136,243,1689,1711]" captionTargetBox="[151,1436,190,1665]" captionTargetId="figure-33@4.[151,1436,190,1665]" captionTargetPageId="4" captionText="FIGURES 11–16. Gyrosigma dongtingense, sp. nov., SEM. 11, 13. Two valve types, either S-shaped or Ƨ-shaped, in external view. 12, 14. Middle part details from Fig. 11 and Fig. 13, respectively, note that both external proximal raphe fissures are deflected towards the convex side of each half-valve. 15, 16. Two valve types, either S-shaped or Ƨ-shaped, in internal view. Note the axial costa (four wavy arrows) along the raphe sternum. Scale bar = 10 μm (Figs 11–16)." figureDoi="http://doi.org/10.5281/zenodo.13214609" httpUri="https://zenodo.org/record/13214609/files/figure.png" pageId="1" pageNumber="114">13, 16</figureCitation>
|
||
). Each valve lanceolate with bent, cuneate apices (
|
||
<figureCitation id="131A2A44AB66730FFDE9F86AFD15FAFF" box="[548,649,2020,2046]" captionStart="FIGURES 1–4" captionStartId="2.[136,243,1737,1759]" captionTargetBox="[151,1435,314,1710]" captionTargetId="figure-105@2.[151,1435,314,1710]" captionTargetPageId="2" captionText="FIGURES 1–4. Gyrosigma dongtingense, sp. nov., LM, ×630. 1–4. Four valves showing two different types: S-shaped valve (Figs 1, 2) and Ƨ-shaped (reverse S-shaped) valve (Figs 3, 4). 1. Illustration of holotype specimen. Note the convex and concave sides of each halfvalve (labelled in Fig. 3) and the two curvatures of each half of the raphe sternum (labelled in Fig. 4). Scale bar = 20 μm." figureDoi="http://doi.org/10.5281/zenodo.13214605" httpUri="https://zenodo.org/record/13214605/files/figure.png" pageId="1" pageNumber="114">Figs 1–4</figureCitation>
|
||
). Valve dimensions: 161–218 μm long and 24–29 μm wide (n=34). Each half-valve has a convex side and a concave side (labeled in
|
||
<figureCitation id="131A2A44AB66730FFCEFF786FCFAF523" box="[802,870,2056,2082]" captionStart="FIGURES 1–4" captionStartId="2.[136,243,1737,1759]" captionTargetBox="[151,1435,314,1710]" captionTargetId="figure-105@2.[151,1435,314,1710]" captionTargetPageId="2" captionText="FIGURES 1–4. Gyrosigma dongtingense, sp. nov., LM, ×630. 1–4. Four valves showing two different types: S-shaped valve (Figs 1, 2) and Ƨ-shaped (reverse S-shaped) valve (Figs 3, 4). 1. Illustration of holotype specimen. Note the convex and concave sides of each halfvalve (labelled in Fig. 3) and the two curvatures of each half of the raphe sternum (labelled in Fig. 4). Scale bar = 20 μm." figureDoi="http://doi.org/10.5281/zenodo.13214605" httpUri="https://zenodo.org/record/13214605/files/figure.png" pageId="1" pageNumber="114">Fig. 3</figureCitation>
|
||
). Each half of the raphe sternum has two curvatures (labeled in
|
||
<figureCitation id="131A2A44AB65730CFECAFF10FED0FDB9" box="[263,332,158,184]" captionStart="FIGURES 1–4" captionStartId="2.[136,243,1737,1759]" captionTargetBox="[151,1435,314,1710]" captionTargetId="figure-105@2.[151,1435,314,1710]" captionTargetPageId="2" captionText="FIGURES 1–4. Gyrosigma dongtingense, sp. nov., LM, ×630. 1–4. Four valves showing two different types: S-shaped valve (Figs 1, 2) and Ƨ-shaped (reverse S-shaped) valve (Figs 3, 4). 1. Illustration of holotype specimen. Note the convex and concave sides of each halfvalve (labelled in Fig. 3) and the two curvatures of each half of the raphe sternum (labelled in Fig. 4). Scale bar = 20 μm." figureDoi="http://doi.org/10.5281/zenodo.13214605" httpUri="https://zenodo.org/record/13214605/files/figure.png" pageId="2" pageNumber="115">Fig. 4</figureCitation>
|
||
). Central area small, roughly a quadrangle, and rotates several degrees about the valve longitudinal axis (
|
||
<figureCitation id="131A2A44AB65730CFF09FF4CFEB4FDDD" box="[196,296,194,220]" captionStart="FIGURES 1–4" captionStartId="2.[136,243,1737,1759]" captionTargetBox="[151,1435,314,1710]" captionTargetId="figure-105@2.[151,1435,314,1710]" captionTargetPageId="2" captionText="FIGURES 1–4. Gyrosigma dongtingense, sp. nov., LM, ×630. 1–4. Four valves showing two different types: S-shaped valve (Figs 1, 2) and Ƨ-shaped (reverse S-shaped) valve (Figs 3, 4). 1. Illustration of holotype specimen. Note the convex and concave sides of each halfvalve (labelled in Fig. 3) and the two curvatures of each half of the raphe sternum (labelled in Fig. 4). Scale bar = 20 μm." figureDoi="http://doi.org/10.5281/zenodo.13214605" httpUri="https://zenodo.org/record/13214605/files/figure.png" pageId="2" pageNumber="115">Figs 1–4</figureCitation>
|
||
,
|
||
<figureCitation id="131A2A44AB65730CFEF9FF4CFEC3FDDD" box="[308,351,194,220]" captionStart="FIGURES 5–10" captionStartId="3.[136,243,1099,1121]" captionTargetBox="[151,1435,281,1074]" captionTargetId="figure-74@3.[151,1435,281,1074]" captionTargetPageId="3" captionText="FIGURES 5–10. Gyrosigma dongtingense, sp. nov., LM, ×1000. 5–7 and 8–10. Magnifications from Fig. 1 and Fig.2, respectively, showing details of the valve middle part and apices. Scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13214607" httpUri="https://zenodo.org/record/13214607/files/figure.png" pageId="2" pageNumber="115">6, 9</figureCitation>
|
||
,
|
||
<figureCitation id="131A2A44AB65730CFEA6FF4CFE16FDDD" box="[363,394,194,220]" captionStart="FIGURES 17–22" captionStartId="5.[136,243,1815,1837]" captionTargetBox="[151,1435,317,1791]" captionTargetId="figure-88@5.[151,1435,317,1791]" captionTargetPageId="5" captionText="FIGURES 17–22. Gyrosigma dongtingense, sp. nov., SEM. 17–19. Three valve middle parts in external view showing the rotated central areas (e.g., Fig. 17, double-headed arrow), the outer proximal raphe fissures deflected in opposite directions (two arrows in Figs 17–19, respectively). 20–22. Three valve middle parts in internal view showing the two central bars (e.g., Fig. 18, two arrows), the T-shaped inner proximal endings (e.g., Fig. 19, two arrows), and the fusiform central nodule (e.g., Fig. 20, double-headed arrow). Scale bar = 1 μm (Figs 15–20)." figureDoi="http://doi.org/10.5281/zenodo.13214611" httpUri="https://zenodo.org/record/13214611/files/figure.png" pageId="2" pageNumber="115">17</figureCitation>
|
||
). Terminal area with a hyaline triangle area and located on the concave valve side (
|
||
<figureCitation id="131A2A44AB65730CFAEAFF4CFF3AFC01" captionStart="FIGURES 5–10" captionStartId="3.[136,243,1099,1121]" captionTargetBox="[151,1435,281,1074]" captionTargetId="figure-74@3.[151,1435,281,1074]" captionTargetPageId="3" captionText="FIGURES 5–10. Gyrosigma dongtingense, sp. nov., LM, ×1000. 5–7 and 8–10. Magnifications from Fig. 1 and Fig.2, respectively, showing details of the valve middle part and apices. Scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13214607" httpUri="https://zenodo.org/record/13214607/files/figure.png" pageId="2" pageNumber="115">Figs 5, 7, 8, 10</figureCitation>
|
||
,
|
||
<figureCitation id="131A2A44AB65730CFF7EFF68FF61FC01" box="[179,253,230,256]" captionStart="FIGURES 23–28" captionStartId="6.[136,243,1688,1710]" captionTargetBox="[151,1435,190,1664]" captionTargetId="figure-33@6.[151,1435,190,1664]" captionTargetPageId="6" captionText="FIGURES 23–28. Gyrosigma dongtingense, sp. nov., SEM. 23, 24. Two apices in external view showing the apical field pores, i.e., an isolated row of pores (arrows), a row of rounded areolae (arrowheads), and the triangle terminal area (asterisks). 25, 26. Two apices in internal view showing the apical field pores (e.g., arrows, Fig. 24), a row of rounded areolae (arrowheads), the triangle-shaped terminal area (asterisks), the axial costa (wavy arrows), and a groove (double-headed arrows) between the primary side (#'s) of the raphe sternum and the axial costa (wavy arrows). 27, 28. Two apices at lower magnification showing the more developed primary side of the sternum (Fig. 27, double-headed arrow, external view; Fig. 28, arrows, internal view), the internal axial costa (Fig. 28, wavy arrows), and the groove between the primary side of the raphe sternum and the axial costa. Scale bar = 1 μm (Figs 21–24), 10 μm (Figs 25, 26)." figureDoi="http://doi.org/10.5281/zenodo.13214613" httpUri="https://zenodo.org/record/13214613/files/figure.png" pageId="2" pageNumber="115">23–26</figureCitation>
|
||
). Transverse and longitudinal striae are distinct and perpendicular to each other. Transverse stria density is
|
||
<quantity id="4CD99B24AB65730CFF45FE84FF77FC25" box="[136,235,266,292]" metricMagnitude="-1" metricUnit="m" metricValue="3.302" metricValueMax="3.556" metricValueMin="3.048" pageId="2" pageNumber="115" unit="in" value="13.0" valueMax="14.0" valueMin="12.0">12–14 in</quantity>
|
||
10 μm and longitudinal stria density is
|
||
<quantity id="4CD99B24AB65730CFD6AFE84FC96FC25" box="[679,778,266,292]" metricMagnitude="-1" metricUnit="m" metricValue="4.318" metricValueMax="4.572" metricValueMin="4.064" pageId="2" pageNumber="115" unit="in" value="17.0" valueMax="18.0" valueMin="16.0">16–18 in</quantity>
|
||
10 μm.
|
||
</paragraph>
|
||
<caption id="DF5E6649AB65730CFF45F947FA8FFA26" ID-DOI="http://doi.org/10.5281/zenodo.13214605" ID-Zenodo-Dep="13214605" httpUri="https://zenodo.org/record/13214605/files/figure.png" pageId="2" pageNumber="115" startId="2.[136,243,1737,1759]" targetBox="[151,1435,314,1710]" targetPageId="2" targetType="figure">
|
||
<paragraph id="8B9E36C1AB65730CFF45F947FA8FFA26" blockId="2.[136,1451,1737,1831]" pageId="2" pageNumber="115">
|
||
<emphasis id="B955EAD3AB65730CFF45F947FEBFFBDF" bold="true" box="[136,291,1737,1759]" pageId="2" pageNumber="115">FIGURES 1–4.</emphasis>
|
||
<taxonomicName id="4C214D42AB65730CFEE7F944FD86FBDF" box="[298,538,1737,1759]" class="Bacillariophyceae" family="Naviculaceae" genus="Gyrosigma" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="2" pageNumber="115" phylum="Bacillariophyta" rank="species" species="dongtingense" status="sp. nov.">
|
||
<emphasis id="B955EAD3AB65730CFEE7F944FD86FBDF" box="[298,538,1737,1759]" italics="true" pageId="2" pageNumber="115">Gyrosigma dongtingense</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicNameLabel id="A26657A8AB65730CFDEBF944FDE8FBDE" box="[550,628,1738,1759]" pageId="2" pageNumber="115" rank="species">sp. nov.</taxonomicNameLabel>
|
||
, LM, ×630. 1–4. Four valves showing two different types: S-shaped valve (Figs 1, 2) and Ƨ-shaped (reverse S-shaped) valve (Figs 3, 4). 1. Illustration of holotype specimen. Note the convex and concave sides of each halfvalve (labelled in Fig. 3) and the two curvatures of each half of the raphe sternum (labelled in Fig. 4). Scale bar = 20 μm.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="8B9E36C1AB65730DFF70F8D8FAACFC01" blockId="2.[136,1452,1878,2084]" lastBlockId="3.[136,1451,158,257]" lastPageId="3" lastPageNumber="116" pageId="2" pageNumber="115">
|
||
SEM (
|
||
<figureCitation id="131A2A44AB65730CFEC8F8D8FE1AFA71" box="[261,390,1878,1904]" captionStart-0="FIGURES 11–16" captionStart-1="FIGURES 17–22" captionStart-2="FIGURES 23–28" captionStartId-0="4.[136,243,1689,1711]" captionStartId-1="5.[136,243,1815,1837]" captionStartId-2="6.[136,243,1688,1710]" captionTargetBox-0="[151,1436,190,1665]" captionTargetBox-1="[151,1435,317,1791]" captionTargetBox-2="[151,1435,190,1664]" captionTargetId-0="figure-33@4.[151,1436,190,1665]" captionTargetId-1="figure-88@5.[151,1435,317,1791]" captionTargetId-2="figure-33@6.[151,1435,190,1664]" captionTargetPageId-0="4" captionTargetPageId-1="5" captionTargetPageId-2="6" captionText-0="FIGURES 11–16. Gyrosigma dongtingense, sp. nov., SEM. 11, 13. Two valve types, either S-shaped or Ƨ-shaped, in external view. 12, 14. Middle part details from Fig. 11 and Fig. 13, respectively, note that both external proximal raphe fissures are deflected towards the convex side of each half-valve. 15, 16. Two valve types, either S-shaped or Ƨ-shaped, in internal view. Note the axial costa (four wavy arrows) along the raphe sternum. Scale bar = 10 μm (Figs 11–16)." captionText-1="FIGURES 17–22. Gyrosigma dongtingense, sp. nov., SEM. 17–19. Three valve middle parts in external view showing the rotated central areas (e.g., Fig. 17, double-headed arrow), the outer proximal raphe fissures deflected in opposite directions (two arrows in Figs 17–19, respectively). 20–22. Three valve middle parts in internal view showing the two central bars (e.g., Fig. 18, two arrows), the T-shaped inner proximal endings (e.g., Fig. 19, two arrows), and the fusiform central nodule (e.g., Fig. 20, double-headed arrow). Scale bar = 1 μm (Figs 15–20)." captionText-2="FIGURES 23–28. Gyrosigma dongtingense, sp. nov., SEM. 23, 24. Two apices in external view showing the apical field pores, i.e., an isolated row of pores (arrows), a row of rounded areolae (arrowheads), and the triangle terminal area (asterisks). 25, 26. Two apices in internal view showing the apical field pores (e.g., arrows, Fig. 24), a row of rounded areolae (arrowheads), the triangle-shaped terminal area (asterisks), the axial costa (wavy arrows), and a groove (double-headed arrows) between the primary side (#'s) of the raphe sternum and the axial costa (wavy arrows). 27, 28. Two apices at lower magnification showing the more developed primary side of the sternum (Fig. 27, double-headed arrow, external view; Fig. 28, arrows, internal view), the internal axial costa (Fig. 28, wavy arrows), and the groove between the primary side of the raphe sternum and the axial costa. Scale bar = 1 μm (Figs 21–24), 10 μm (Figs 25, 26)." figureDoi-0="http://doi.org/10.5281/zenodo.13214609" figureDoi-1="http://doi.org/10.5281/zenodo.13214611" figureDoi-2="http://doi.org/10.5281/zenodo.13214613" httpUri-0="https://zenodo.org/record/13214609/files/figure.png" httpUri-1="https://zenodo.org/record/13214611/files/figure.png" httpUri-2="https://zenodo.org/record/13214613/files/figure.png" pageId="2" pageNumber="115">Figs 11–28</figureCitation>
|
||
): Valves vault (
|
||
<figureCitation id="131A2A44AB65730CFDE3F8D8FD35FA71" box="[558,681,1878,1904]" captionStart="FIGURES 11–16" captionStartId="4.[136,243,1689,1711]" captionTargetBox="[151,1436,190,1665]" captionTargetId="figure-33@4.[151,1436,190,1665]" captionTargetPageId="4" captionText="FIGURES 11–16. Gyrosigma dongtingense, sp. nov., SEM. 11, 13. Two valve types, either S-shaped or Ƨ-shaped, in external view. 12, 14. Middle part details from Fig. 11 and Fig. 13, respectively, note that both external proximal raphe fissures are deflected towards the convex side of each half-valve. 15, 16. Two valve types, either S-shaped or Ƨ-shaped, in internal view. Note the axial costa (four wavy arrows) along the raphe sternum. Scale bar = 10 μm (Figs 11–16)." figureDoi="http://doi.org/10.5281/zenodo.13214609" httpUri="https://zenodo.org/record/13214609/files/figure.png" pageId="2" pageNumber="115">Figs 11, 13</figureCitation>
|
||
) and are of
|
||
<specimenCount id="9D27FD48AB65730CFCE1F8D8FC06FA71" box="[812,922,1878,1904]" count="2" pageId="2" pageNumber="115" type="generic" typeStatus="types">two types</specimenCount>
|
||
, either S-shaped (
|
||
<figureCitation id="131A2A44AB65730CFB93F8D8FB46FA71" box="[1118,1242,1878,1904]" captionStart="FIGURES 11–16" captionStartId="4.[136,243,1689,1711]" captionTargetBox="[151,1436,190,1665]" captionTargetId="figure-33@4.[151,1436,190,1665]" captionTargetPageId="4" captionText="FIGURES 11–16. Gyrosigma dongtingense, sp. nov., SEM. 11, 13. Two valve types, either S-shaped or Ƨ-shaped, in external view. 12, 14. Middle part details from Fig. 11 and Fig. 13, respectively, note that both external proximal raphe fissures are deflected towards the convex side of each half-valve. 15, 16. Two valve types, either S-shaped or Ƨ-shaped, in internal view. Note the axial costa (four wavy arrows) along the raphe sternum. Scale bar = 10 μm (Figs 11–16)." figureDoi="http://doi.org/10.5281/zenodo.13214609" httpUri="https://zenodo.org/record/13214609/files/figure.png" pageId="2" pageNumber="115">Figs 11, 14</figureCitation>
|
||
) or Ƨ-shaped (
|
||
<figureCitation id="131A2A44AB65730CFAB7F8D8FF4EFA94" captionStart="FIGURES 11–16" captionStartId="4.[136,243,1689,1711]" captionTargetBox="[151,1436,190,1665]" captionTargetId="figure-33@4.[151,1436,190,1665]" captionTargetPageId="4" captionText="FIGURES 11–16. Gyrosigma dongtingense, sp. nov., SEM. 11, 13. Two valve types, either S-shaped or Ƨ-shaped, in external view. 12, 14. Middle part details from Fig. 11 and Fig. 13, respectively, note that both external proximal raphe fissures are deflected towards the convex side of each half-valve. 15, 16. Two valve types, either S-shaped or Ƨ-shaped, in internal view. Note the axial costa (four wavy arrows) along the raphe sternum. Scale bar = 10 μm (Figs 11–16)." figureDoi="http://doi.org/10.5281/zenodo.13214609" httpUri="https://zenodo.org/record/13214609/files/figure.png" pageId="2" pageNumber="115">Figs 13, 15</figureCitation>
|
||
). The raphe sternum is almost located at the midline of each valve. Both external proximal raphe fissures are deflected towards the convex side of each corresponding half-valve, i.e., the two external proximal raphe fissures on the epivalve and the ones on the hypovalve in the same cell are isomorphic (
|
||
<figureCitation id="131A2A44AB65730CFC64F84CFBB6FADD" box="[937,1066,1986,2012]" captionStart="FIGURES 11–16" captionStartId="4.[136,243,1689,1711]" captionTargetBox="[151,1436,190,1665]" captionTargetId="figure-33@4.[151,1436,190,1665]" captionTargetPageId="4" captionText="FIGURES 11–16. Gyrosigma dongtingense, sp. nov., SEM. 11, 13. Two valve types, either S-shaped or Ƨ-shaped, in external view. 12, 14. Middle part details from Fig. 11 and Fig. 13, respectively, note that both external proximal raphe fissures are deflected towards the convex side of each half-valve. 15, 16. Two valve types, either S-shaped or Ƨ-shaped, in internal view. Note the axial costa (four wavy arrows) along the raphe sternum. Scale bar = 10 μm (Figs 11–16)." figureDoi="http://doi.org/10.5281/zenodo.13214609" httpUri="https://zenodo.org/record/13214609/files/figure.png" pageId="2" pageNumber="115">Figs 11–14</figureCitation>
|
||
). One axial costa (thickened rib) is produced along the better-developed primary side of the raphe sternum (
|
||
<figureCitation id="131A2A44AB65730CFC60F868FBB1F501" box="[941,1069,2022,2049]" captionStart="FIGURES 11–16" captionStartId="4.[136,243,1689,1711]" captionTargetBox="[151,1436,190,1665]" captionTargetId="figure-33@4.[151,1436,190,1665]" captionTargetPageId="4" captionText="FIGURES 11–16. Gyrosigma dongtingense, sp. nov., SEM. 11, 13. Two valve types, either S-shaped or Ƨ-shaped, in external view. 12, 14. Middle part details from Fig. 11 and Fig. 13, respectively, note that both external proximal raphe fissures are deflected towards the convex side of each half-valve. 15, 16. Two valve types, either S-shaped or Ƨ-shaped, in internal view. Note the axial costa (four wavy arrows) along the raphe sternum. Scale bar = 10 μm (Figs 11–16)." figureDoi="http://doi.org/10.5281/zenodo.13214609" httpUri="https://zenodo.org/record/13214609/files/figure.png" pageId="2" pageNumber="115">Figs 15, 16</figureCitation>
|
||
,
|
||
<figureCitation id="131A2A44AB65730CFBF5F868FB1CF501" box="[1080,1152,2022,2048]" captionStart="FIGURES 23–28" captionStartId="6.[136,243,1688,1710]" captionTargetBox="[151,1435,190,1664]" captionTargetId="figure-33@6.[151,1435,190,1664]" captionTargetPageId="6" captionText="FIGURES 23–28. Gyrosigma dongtingense, sp. nov., SEM. 23, 24. Two apices in external view showing the apical field pores, i.e., an isolated row of pores (arrows), a row of rounded areolae (arrowheads), and the triangle terminal area (asterisks). 25, 26. Two apices in internal view showing the apical field pores (e.g., arrows, Fig. 24), a row of rounded areolae (arrowheads), the triangle-shaped terminal area (asterisks), the axial costa (wavy arrows), and a groove (double-headed arrows) between the primary side (#'s) of the raphe sternum and the axial costa (wavy arrows). 27, 28. Two apices at lower magnification showing the more developed primary side of the sternum (Fig. 27, double-headed arrow, external view; Fig. 28, arrows, internal view), the internal axial costa (Fig. 28, wavy arrows), and the groove between the primary side of the raphe sternum and the axial costa. Scale bar = 1 μm (Figs 21–24), 10 μm (Figs 25, 26)." figureDoi="http://doi.org/10.5281/zenodo.13214613" httpUri="https://zenodo.org/record/13214613/files/figure.png" pageId="2" pageNumber="115">26, 28</figureCitation>
|
||
, wavy arrows). Externally, the primary side of the raphe sternum is much more developed than the secondary side which seems nearly absent (
|
||
<figureCitation id="131A2A44AB65730DFAB3F784FF3AFDB9" captionStart="FIGURES 23–28" captionStartId="6.[136,243,1688,1710]" captionTargetBox="[151,1435,190,1664]" captionTargetId="figure-33@6.[151,1435,190,1664]" captionTargetPageId="6" captionText="FIGURES 23–28. Gyrosigma dongtingense, sp. nov., SEM. 23, 24. Two apices in external view showing the apical field pores, i.e., an isolated row of pores (arrows), a row of rounded areolae (arrowheads), and the triangle terminal area (asterisks). 25, 26. Two apices in internal view showing the apical field pores (e.g., arrows, Fig. 24), a row of rounded areolae (arrowheads), the triangle-shaped terminal area (asterisks), the axial costa (wavy arrows), and a groove (double-headed arrows) between the primary side (#'s) of the raphe sternum and the axial costa (wavy arrows). 27, 28. Two apices at lower magnification showing the more developed primary side of the sternum (Fig. 27, double-headed arrow, external view; Fig. 28, arrows, internal view), the internal axial costa (Fig. 28, wavy arrows), and the groove between the primary side of the raphe sternum and the axial costa. Scale bar = 1 μm (Figs 21–24), 10 μm (Figs 25, 26)." figureDoi="http://doi.org/10.5281/zenodo.13214613" httpUri="https://zenodo.org/record/13214613/files/figure.png" lastPageId="3" lastPageNumber="116" pageId="2" pageNumber="115">Fig. 27</figureCitation>
|
||
, double-headed arrow indicates the more developed primary side). Internally, the primary side of the raphe sternum is also much more developed than the secondary side (
|
||
<figureCitation id="131A2A44AB64730DFD22FF4CFCEDFDDD" box="[751,881,194,221]" captionStart="FIGURES 23–28" captionStartId="6.[136,243,1688,1710]" captionTargetBox="[151,1435,190,1664]" captionTargetId="figure-33@6.[151,1435,190,1664]" captionTargetPageId="6" captionText="FIGURES 23–28. Gyrosigma dongtingense, sp. nov., SEM. 23, 24. Two apices in external view showing the apical field pores, i.e., an isolated row of pores (arrows), a row of rounded areolae (arrowheads), and the triangle terminal area (asterisks). 25, 26. Two apices in internal view showing the apical field pores (e.g., arrows, Fig. 24), a row of rounded areolae (arrowheads), the triangle-shaped terminal area (asterisks), the axial costa (wavy arrows), and a groove (double-headed arrows) between the primary side (#'s) of the raphe sternum and the axial costa (wavy arrows). 27, 28. Two apices at lower magnification showing the more developed primary side of the sternum (Fig. 27, double-headed arrow, external view; Fig. 28, arrows, internal view), the internal axial costa (Fig. 28, wavy arrows), and the groove between the primary side of the raphe sternum and the axial costa. Scale bar = 1 μm (Figs 21–24), 10 μm (Figs 25, 26)." figureDoi="http://doi.org/10.5281/zenodo.13214613" httpUri="https://zenodo.org/record/13214613/files/figure.png" pageId="3" pageNumber="116">Figs 25, 26</figureCitation>
|
||
, #'s;
|
||
<figureCitation id="131A2A44AB64730DFC66FF4CFC61FDDD" box="[939,1021,194,220]" captionStart="FIGURES 23–28" captionStartId="6.[136,243,1688,1710]" captionTargetBox="[151,1435,190,1664]" captionTargetId="figure-33@6.[151,1435,190,1664]" captionTargetPageId="6" captionText="FIGURES 23–28. Gyrosigma dongtingense, sp. nov., SEM. 23, 24. Two apices in external view showing the apical field pores, i.e., an isolated row of pores (arrows), a row of rounded areolae (arrowheads), and the triangle terminal area (asterisks). 25, 26. Two apices in internal view showing the apical field pores (e.g., arrows, Fig. 24), a row of rounded areolae (arrowheads), the triangle-shaped terminal area (asterisks), the axial costa (wavy arrows), and a groove (double-headed arrows) between the primary side (#'s) of the raphe sternum and the axial costa (wavy arrows). 27, 28. Two apices at lower magnification showing the more developed primary side of the sternum (Fig. 27, double-headed arrow, external view; Fig. 28, arrows, internal view), the internal axial costa (Fig. 28, wavy arrows), and the groove between the primary side of the raphe sternum and the axial costa. Scale bar = 1 μm (Figs 21–24), 10 μm (Figs 25, 26)." figureDoi="http://doi.org/10.5281/zenodo.13214613" httpUri="https://zenodo.org/record/13214613/files/figure.png" pageId="3" pageNumber="116">Fig. 28</figureCitation>
|
||
, arrows). A groove is formed between the axial costa and the primary side of the raphe sternum (
|
||
<figureCitation id="131A2A44AB64730DFCDCFF68FC0EFC01" box="[785,914,230,257]" captionStart="FIGURES 23–28" captionStartId="6.[136,243,1688,1710]" captionTargetBox="[151,1435,190,1664]" captionTargetId="figure-33@6.[151,1435,190,1664]" captionTargetPageId="6" captionText="FIGURES 23–28. Gyrosigma dongtingense, sp. nov., SEM. 23, 24. Two apices in external view showing the apical field pores, i.e., an isolated row of pores (arrows), a row of rounded areolae (arrowheads), and the triangle terminal area (asterisks). 25, 26. Two apices in internal view showing the apical field pores (e.g., arrows, Fig. 24), a row of rounded areolae (arrowheads), the triangle-shaped terminal area (asterisks), the axial costa (wavy arrows), and a groove (double-headed arrows) between the primary side (#'s) of the raphe sternum and the axial costa (wavy arrows). 27, 28. Two apices at lower magnification showing the more developed primary side of the sternum (Fig. 27, double-headed arrow, external view; Fig. 28, arrows, internal view), the internal axial costa (Fig. 28, wavy arrows), and the groove between the primary side of the raphe sternum and the axial costa. Scale bar = 1 μm (Figs 21–24), 10 μm (Figs 25, 26)." figureDoi="http://doi.org/10.5281/zenodo.13214613" httpUri="https://zenodo.org/record/13214613/files/figure.png" pageId="3" pageNumber="116">Figs 25, 26</figureCitation>
|
||
, double-headed arrow, respectively).
|
||
</paragraph>
|
||
<caption id="DF5E6649AB64730DFF45FBC5FCABF984" ID-DOI="http://doi.org/10.5281/zenodo.13214607" ID-Zenodo-Dep="13214607" httpUri="https://zenodo.org/record/13214607/files/figure.png" pageId="3" pageNumber="116" startId="3.[136,243,1099,1121]" targetBox="[151,1435,281,1074]" targetPageId="3" targetType="figure">
|
||
<paragraph id="8B9E36C1AB64730DFF45FBC5FCABF984" blockId="3.[136,1452,1099,1157]" pageId="3" pageNumber="116">
|
||
<emphasis id="B955EAD3AB64730DFF45FBC5FEADF961" bold="true" box="[136,305,1099,1121]" pageId="3" pageNumber="116">FIGURES 5–10.</emphasis>
|
||
<taxonomicName id="4C214D42AB64730DFEF6FBC5FDB2F961" box="[315,558,1099,1120]" class="Bacillariophyceae" family="Naviculaceae" genus="Gyrosigma" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="3" pageNumber="116" phylum="Bacillariophyta" rank="species" species="dongtingense" status="sp. nov.">
|
||
<emphasis id="B955EAD3AB64730DFEF6FBC5FDB2F961" box="[315,558,1099,1120]" italics="true" pageId="3" pageNumber="116">Gyrosigma dongtingense</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicNameLabel id="A26657A8AB64730DFDF0FBC2FD11F960" box="[573,653,1100,1121]" pageId="3" pageNumber="116" rank="species">sp. nov.</taxonomicNameLabel>
|
||
, LM, ×1000. 5–7 and 8–10. Magnifications from Fig. 1 and Fig.2, respectively, showing details of the valve middle part and apices. Scale bar = 10 μm.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="8B9E36C1AB64730DFF70FB3DFBDEF8A7" blockId="3.[136,1452,1203,1914]" pageId="3" pageNumber="116">
|
||
The central areas of the valve exterior exhibit a more or less quadrangle shape (
|
||
<figureCitation id="131A2A44AB64730DFB8EFB3DFB59F9CF" box="[1091,1221,1203,1230]" captionStart="FIGURES 17–22" captionStartId="5.[136,243,1815,1837]" captionTargetBox="[151,1435,317,1791]" captionTargetId="figure-88@5.[151,1435,317,1791]" captionTargetPageId="5" captionText="FIGURES 17–22. Gyrosigma dongtingense, sp. nov., SEM. 17–19. Three valve middle parts in external view showing the rotated central areas (e.g., Fig. 17, double-headed arrow), the outer proximal raphe fissures deflected in opposite directions (two arrows in Figs 17–19, respectively). 20–22. Three valve middle parts in internal view showing the two central bars (e.g., Fig. 18, two arrows), the T-shaped inner proximal endings (e.g., Fig. 19, two arrows), and the fusiform central nodule (e.g., Fig. 20, double-headed arrow). Scale bar = 1 μm (Figs 15–20)." figureDoi="http://doi.org/10.5281/zenodo.13214611" httpUri="https://zenodo.org/record/13214611/files/figure.png" pageId="3" pageNumber="116">Figs 17–19</figureCitation>
|
||
), rotate a number of degrees about the valve apical axis (
|
||
<figureCitation id="131A2A44AB64730DFDD0FB59FDF3F9F3" box="[541,623,1239,1266]" captionStart="FIGURES 17–22" captionStartId="5.[136,243,1815,1837]" captionTargetBox="[151,1435,317,1791]" captionTargetId="figure-88@5.[151,1435,317,1791]" captionTargetPageId="5" captionText="FIGURES 17–22. Gyrosigma dongtingense, sp. nov., SEM. 17–19. Three valve middle parts in external view showing the rotated central areas (e.g., Fig. 17, double-headed arrow), the outer proximal raphe fissures deflected in opposite directions (two arrows in Figs 17–19, respectively). 20–22. Three valve middle parts in internal view showing the two central bars (e.g., Fig. 18, two arrows), the T-shaped inner proximal endings (e.g., Fig. 19, two arrows), and the fusiform central nodule (e.g., Fig. 20, double-headed arrow). Scale bar = 1 μm (Figs 15–20)." figureDoi="http://doi.org/10.5281/zenodo.13214611" httpUri="https://zenodo.org/record/13214611/files/figure.png" pageId="3" pageNumber="116">Fig. 17</figureCitation>
|
||
, double-headed arrow). Within the inner central region, a central fusiform nodule (
|
||
<figureCitation id="131A2A44AB64730DFF29FB75FEABF817" box="[228,311,1275,1302]" captionStart="FIGURES 17–22" captionStartId="5.[136,243,1815,1837]" captionTargetBox="[151,1435,317,1791]" captionTargetId="figure-88@5.[151,1435,317,1791]" captionTargetPageId="5" captionText="FIGURES 17–22. Gyrosigma dongtingense, sp. nov., SEM. 17–19. Three valve middle parts in external view showing the rotated central areas (e.g., Fig. 17, double-headed arrow), the outer proximal raphe fissures deflected in opposite directions (two arrows in Figs 17–19, respectively). 20–22. Three valve middle parts in internal view showing the two central bars (e.g., Fig. 18, two arrows), the T-shaped inner proximal endings (e.g., Fig. 19, two arrows), and the fusiform central nodule (e.g., Fig. 20, double-headed arrow). Scale bar = 1 μm (Figs 15–20)." figureDoi="http://doi.org/10.5281/zenodo.13214611" httpUri="https://zenodo.org/record/13214611/files/figure.png" pageId="3" pageNumber="116">Fig. 22</figureCitation>
|
||
, double-headed arrow) borders the two shallow grooves (
|
||
<figureCitation id="131A2A44AB64730DFC77FB75FB91F817" box="[954,1037,1275,1302]" captionStart="FIGURES 17–22" captionStartId="5.[136,243,1815,1837]" captionTargetBox="[151,1435,317,1791]" captionTargetId="figure-88@5.[151,1435,317,1791]" captionTargetPageId="5" captionText="FIGURES 17–22. Gyrosigma dongtingense, sp. nov., SEM. 17–19. Three valve middle parts in external view showing the rotated central areas (e.g., Fig. 17, double-headed arrow), the outer proximal raphe fissures deflected in opposite directions (two arrows in Figs 17–19, respectively). 20–22. Three valve middle parts in internal view showing the two central bars (e.g., Fig. 18, two arrows), the T-shaped inner proximal endings (e.g., Fig. 19, two arrows), and the fusiform central nodule (e.g., Fig. 20, double-headed arrow). Scale bar = 1 μm (Figs 15–20)." figureDoi="http://doi.org/10.5281/zenodo.13214611" httpUri="https://zenodo.org/record/13214611/files/figure.png" pageId="3" pageNumber="116">Fig. 20</figureCitation>
|
||
, two double-head arrows) which are, in turn, enclosed by a pair of crescent siliceous bars (
|
||
<figureCitation id="131A2A44AB64730DFD28FA91FCA6F83B" box="[741,826,1311,1338]" captionStart="FIGURES 17–22" captionStartId="5.[136,243,1815,1837]" captionTargetBox="[151,1435,317,1791]" captionTargetId="figure-88@5.[151,1435,317,1791]" captionTargetPageId="5" captionText="FIGURES 17–22. Gyrosigma dongtingense, sp. nov., SEM. 17–19. Three valve middle parts in external view showing the rotated central areas (e.g., Fig. 17, double-headed arrow), the outer proximal raphe fissures deflected in opposite directions (two arrows in Figs 17–19, respectively). 20–22. Three valve middle parts in internal view showing the two central bars (e.g., Fig. 18, two arrows), the T-shaped inner proximal endings (e.g., Fig. 19, two arrows), and the fusiform central nodule (e.g., Fig. 20, double-headed arrow). Scale bar = 1 μm (Figs 15–20)." figureDoi="http://doi.org/10.5281/zenodo.13214611" httpUri="https://zenodo.org/record/13214611/files/figure.png" pageId="3" pageNumber="116">Fig. 20</figureCitation>
|
||
, two arrows). For the epivalve or hypovalve consisting of a frustule, the two external proximal raphe fissures on the epivalve and the ones on the hypovalve both deflect towards the convex side of each half-valve and terminate in a slightly expanded arrangement (
|
||
<figureCitation id="131A2A44AB64730DFB6FFAE9FABFF883" box="[1186,1315,1383,1410]" captionStart="FIGURES 17–22" captionStartId="5.[136,243,1815,1837]" captionTargetBox="[151,1435,317,1791]" captionTargetId="figure-88@5.[151,1435,317,1791]" captionTargetPageId="5" captionText="FIGURES 17–22. Gyrosigma dongtingense, sp. nov., SEM. 17–19. Three valve middle parts in external view showing the rotated central areas (e.g., Fig. 17, double-headed arrow), the outer proximal raphe fissures deflected in opposite directions (two arrows in Figs 17–19, respectively). 20–22. Three valve middle parts in internal view showing the two central bars (e.g., Fig. 18, two arrows), the T-shaped inner proximal endings (e.g., Fig. 19, two arrows), and the fusiform central nodule (e.g., Fig. 20, double-headed arrow). Scale bar = 1 μm (Figs 15–20)." figureDoi="http://doi.org/10.5281/zenodo.13214611" httpUri="https://zenodo.org/record/13214611/files/figure.png" pageId="3" pageNumber="116">Figs 17–19</figureCitation>
|
||
, two arrows respectively). Inner proximal raphe ends of the raphe T-shaped (
|
||
<figureCitation id="131A2A44AB64730DFC98FA05FC34F8A7" box="[853,936,1419,1446]" captionStart="FIGURES 17–22" captionStartId="5.[136,243,1815,1837]" captionTargetBox="[151,1435,317,1791]" captionTargetId="figure-88@5.[151,1435,317,1791]" captionTargetPageId="5" captionText="FIGURES 17–22. Gyrosigma dongtingense, sp. nov., SEM. 17–19. Three valve middle parts in external view showing the rotated central areas (e.g., Fig. 17, double-headed arrow), the outer proximal raphe fissures deflected in opposite directions (two arrows in Figs 17–19, respectively). 20–22. Three valve middle parts in internal view showing the two central bars (e.g., Fig. 18, two arrows), the T-shaped inner proximal endings (e.g., Fig. 19, two arrows), and the fusiform central nodule (e.g., Fig. 20, double-headed arrow). Scale bar = 1 μm (Figs 15–20)." figureDoi="http://doi.org/10.5281/zenodo.13214611" httpUri="https://zenodo.org/record/13214611/files/figure.png" pageId="3" pageNumber="116">Fig. 21</figureCitation>
|
||
, two arrows).
|
||
</paragraph>
|
||
<paragraph id="8B9E36C1AB64730DFF70FA21FE93FBEB" blockId="3.[136,1452,1203,1914]" pageId="3" pageNumber="116">
|
||
The outer distal raphe fissures are curved towards the concave side of each half-valve and terminate on the mantle (
|
||
<figureCitation id="131A2A44AB64730DFF5DFA5DFE8DF8EF" box="[144,273,1491,1518]" captionStart="FIGURES 23–28" captionStartId="6.[136,243,1688,1710]" captionTargetBox="[151,1435,190,1664]" captionTargetId="figure-33@6.[151,1435,190,1664]" captionTargetPageId="6" captionText="FIGURES 23–28. Gyrosigma dongtingense, sp. nov., SEM. 23, 24. Two apices in external view showing the apical field pores, i.e., an isolated row of pores (arrows), a row of rounded areolae (arrowheads), and the triangle terminal area (asterisks). 25, 26. Two apices in internal view showing the apical field pores (e.g., arrows, Fig. 24), a row of rounded areolae (arrowheads), the triangle-shaped terminal area (asterisks), the axial costa (wavy arrows), and a groove (double-headed arrows) between the primary side (#'s) of the raphe sternum and the axial costa (wavy arrows). 27, 28. Two apices at lower magnification showing the more developed primary side of the sternum (Fig. 27, double-headed arrow, external view; Fig. 28, arrows, internal view), the internal axial costa (Fig. 28, wavy arrows), and the groove between the primary side of the raphe sternum and the axial costa. Scale bar = 1 μm (Figs 21–24), 10 μm (Figs 25, 26)." figureDoi="http://doi.org/10.5281/zenodo.13214613" httpUri="https://zenodo.org/record/13214613/files/figure.png" pageId="3" pageNumber="116">Figs 23, 24</figureCitation>
|
||
). The inner distal raphe fissure ends at a knob-like helictoglossa (
|
||
<figureCitation id="131A2A44AB64730DFC2CFA5DFBFEF8EC" box="[993,1122,1491,1518]" captionStart="FIGURES 23–28" captionStartId="6.[136,243,1688,1710]" captionTargetBox="[151,1435,190,1664]" captionTargetId="figure-33@6.[151,1435,190,1664]" captionTargetPageId="6" captionText="FIGURES 23–28. Gyrosigma dongtingense, sp. nov., SEM. 23, 24. Two apices in external view showing the apical field pores, i.e., an isolated row of pores (arrows), a row of rounded areolae (arrowheads), and the triangle terminal area (asterisks). 25, 26. Two apices in internal view showing the apical field pores (e.g., arrows, Fig. 24), a row of rounded areolae (arrowheads), the triangle-shaped terminal area (asterisks), the axial costa (wavy arrows), and a groove (double-headed arrows) between the primary side (#'s) of the raphe sternum and the axial costa (wavy arrows). 27, 28. Two apices at lower magnification showing the more developed primary side of the sternum (Fig. 27, double-headed arrow, external view; Fig. 28, arrows, internal view), the internal axial costa (Fig. 28, wavy arrows), and the groove between the primary side of the raphe sternum and the axial costa. Scale bar = 1 μm (Figs 21–24), 10 μm (Figs 25, 26)." figureDoi="http://doi.org/10.5281/zenodo.13214613" httpUri="https://zenodo.org/record/13214613/files/figure.png" pageId="3" pageNumber="116">Figs 25, 26</figureCitation>
|
||
). The areola outside openings have at least two different shapes: one is slit-like and the other is tiny, rounded. The openings of the first shape are present on the whole valve surface except at the margins, where the outside openings of areolae (which comprise the two outermost, longitudinal striae) belong to the second shape (
|
||
<figureCitation id="131A2A44AB64730DFC4CF9B1FB9FFB58" box="[897,1027,1599,1625]" captionStart="FIGURES 23–28" captionStartId="6.[136,243,1688,1710]" captionTargetBox="[151,1435,190,1664]" captionTargetId="figure-33@6.[151,1435,190,1664]" captionTargetPageId="6" captionText="FIGURES 23–28. Gyrosigma dongtingense, sp. nov., SEM. 23, 24. Two apices in external view showing the apical field pores, i.e., an isolated row of pores (arrows), a row of rounded areolae (arrowheads), and the triangle terminal area (asterisks). 25, 26. Two apices in internal view showing the apical field pores (e.g., arrows, Fig. 24), a row of rounded areolae (arrowheads), the triangle-shaped terminal area (asterisks), the axial costa (wavy arrows), and a groove (double-headed arrows) between the primary side (#'s) of the raphe sternum and the axial costa (wavy arrows). 27, 28. Two apices at lower magnification showing the more developed primary side of the sternum (Fig. 27, double-headed arrow, external view; Fig. 28, arrows, internal view), the internal axial costa (Fig. 28, wavy arrows), and the groove between the primary side of the raphe sternum and the axial costa. Scale bar = 1 μm (Figs 21–24), 10 μm (Figs 25, 26)." figureDoi="http://doi.org/10.5281/zenodo.13214613" httpUri="https://zenodo.org/record/13214613/files/figure.png" pageId="3" pageNumber="116">Figs 23–26</figureCitation>
|
||
, arrowheads). Areola inside openings can be oblong, round, or elliptic. Most of the inside openings are covered by hymens (
|
||
<figureCitation id="131A2A44AB64730DFB96F9EDFB41FB7C" box="[1115,1245,1635,1662]" captionStart="FIGURES 23–28" captionStartId="6.[136,243,1688,1710]" captionTargetBox="[151,1435,190,1664]" captionTargetId="figure-33@6.[151,1435,190,1664]" captionTargetPageId="6" captionText="FIGURES 23–28. Gyrosigma dongtingense, sp. nov., SEM. 23, 24. Two apices in external view showing the apical field pores, i.e., an isolated row of pores (arrows), a row of rounded areolae (arrowheads), and the triangle terminal area (asterisks). 25, 26. Two apices in internal view showing the apical field pores (e.g., arrows, Fig. 24), a row of rounded areolae (arrowheads), the triangle-shaped terminal area (asterisks), the axial costa (wavy arrows), and a groove (double-headed arrows) between the primary side (#'s) of the raphe sternum and the axial costa (wavy arrows). 27, 28. Two apices at lower magnification showing the more developed primary side of the sternum (Fig. 27, double-headed arrow, external view; Fig. 28, arrows, internal view), the internal axial costa (Fig. 28, wavy arrows), and the groove between the primary side of the raphe sternum and the axial costa. Scale bar = 1 μm (Figs 21–24), 10 μm (Figs 25, 26)." figureDoi="http://doi.org/10.5281/zenodo.13214613" httpUri="https://zenodo.org/record/13214613/files/figure.png" pageId="3" pageNumber="116">Figs 25, 26</figureCitation>
|
||
) whereas those of the outermost areolae seem unoccluded (
|
||
<figureCitation id="131A2A44AB64730DFD9AF909FD40FBA0" box="[599,732,1671,1698]" captionStart="FIGURES 23–28" captionStartId="6.[136,243,1688,1710]" captionTargetBox="[151,1435,190,1664]" captionTargetId="figure-33@6.[151,1435,190,1664]" captionTargetPageId="6" captionText="FIGURES 23–28. Gyrosigma dongtingense, sp. nov., SEM. 23, 24. Two apices in external view showing the apical field pores, i.e., an isolated row of pores (arrows), a row of rounded areolae (arrowheads), and the triangle terminal area (asterisks). 25, 26. Two apices in internal view showing the apical field pores (e.g., arrows, Fig. 24), a row of rounded areolae (arrowheads), the triangle-shaped terminal area (asterisks), the axial costa (wavy arrows), and a groove (double-headed arrows) between the primary side (#'s) of the raphe sternum and the axial costa (wavy arrows). 27, 28. Two apices at lower magnification showing the more developed primary side of the sternum (Fig. 27, double-headed arrow, external view; Fig. 28, arrows, internal view), the internal axial costa (Fig. 28, wavy arrows), and the groove between the primary side of the raphe sternum and the axial costa. Scale bar = 1 μm (Figs 21–24), 10 μm (Figs 25, 26)." figureDoi="http://doi.org/10.5281/zenodo.13214613" httpUri="https://zenodo.org/record/13214613/files/figure.png" pageId="3" pageNumber="116">Figs 25, 26</figureCitation>
|
||
). Apical pores are present, consisting of a row of long, isolated crescent pores with very small rounded outside openings (
|
||
<figureCitation id="131A2A44AB64730DFCDBF925FC0BFBC7" box="[790,919,1707,1734]" captionStart="FIGURES 23–28" captionStartId="6.[136,243,1688,1710]" captionTargetBox="[151,1435,190,1664]" captionTargetId="figure-33@6.[151,1435,190,1664]" captionTargetPageId="6" captionText="FIGURES 23–28. Gyrosigma dongtingense, sp. nov., SEM. 23, 24. Two apices in external view showing the apical field pores, i.e., an isolated row of pores (arrows), a row of rounded areolae (arrowheads), and the triangle terminal area (asterisks). 25, 26. Two apices in internal view showing the apical field pores (e.g., arrows, Fig. 24), a row of rounded areolae (arrowheads), the triangle-shaped terminal area (asterisks), the axial costa (wavy arrows), and a groove (double-headed arrows) between the primary side (#'s) of the raphe sternum and the axial costa (wavy arrows). 27, 28. Two apices at lower magnification showing the more developed primary side of the sternum (Fig. 27, double-headed arrow, external view; Fig. 28, arrows, internal view), the internal axial costa (Fig. 28, wavy arrows), and the groove between the primary side of the raphe sternum and the axial costa. Scale bar = 1 μm (Figs 21–24), 10 μm (Figs 25, 26)." figureDoi="http://doi.org/10.5281/zenodo.13214613" httpUri="https://zenodo.org/record/13214613/files/figure.png" pageId="3" pageNumber="116">Figs 23, 24</figureCitation>
|
||
, arrows) and much larger inside openings (
|
||
<figureCitation id="131A2A44AB64730DFAB3F925FF3AFBE8" captionStart="FIGURES 23–28" captionStartId="6.[136,243,1688,1710]" captionTargetBox="[151,1435,190,1664]" captionTargetId="figure-33@6.[151,1435,190,1664]" captionTargetPageId="6" captionText="FIGURES 23–28. Gyrosigma dongtingense, sp. nov., SEM. 23, 24. Two apices in external view showing the apical field pores, i.e., an isolated row of pores (arrows), a row of rounded areolae (arrowheads), and the triangle terminal area (asterisks). 25, 26. Two apices in internal view showing the apical field pores (e.g., arrows, Fig. 24), a row of rounded areolae (arrowheads), the triangle-shaped terminal area (asterisks), the axial costa (wavy arrows), and a groove (double-headed arrows) between the primary side (#'s) of the raphe sternum and the axial costa (wavy arrows). 27, 28. Two apices at lower magnification showing the more developed primary side of the sternum (Fig. 27, double-headed arrow, external view; Fig. 28, arrows, internal view), the internal axial costa (Fig. 28, wavy arrows), and the groove between the primary side of the raphe sternum and the axial costa. Scale bar = 1 μm (Figs 21–24), 10 μm (Figs 25, 26)." figureDoi="http://doi.org/10.5281/zenodo.13214613" httpUri="https://zenodo.org/record/13214613/files/figure.png" pageId="3" pageNumber="116">Fig. 26</figureCitation>
|
||
, arrows).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C33B654AAB64730DFF70F97AFAD0FA57" pageId="3" pageNumber="116" type="materials_examined">
|
||
<paragraph id="8B9E36C1AB64730DFF70F97AFAD0FA57" blockId="3.[136,1452,1203,1914]" pageId="3" pageNumber="116">
|
||
<emphasis id="B955EAD3AB64730DFF70F97AFE82FA0F" bold="true" box="[189,286,1780,1806]" pageId="3" pageNumber="116">Type:—</emphasis>
|
||
<materialsCitation id="3B493C9CAB64730DFED0F97AFAD0FA57" ID-GBIF-Occurrence="4911876301" collectingDate="2023-03-05" collectionCode="JIU" collectorName="Bing Liu & Slide" country="China" elevation="39" latitude="29.318611" location="Herbarium of Jishou University" longLatPrecision="20" longitude="112.79222" municipality="East Dongting Lake" pageId="3" pageNumber="116" specimenCode="DIA2024001" specimenCount="1" stateProvince="Hunan" typeStatus="holotype">
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<collectingCountry id="F3367651AB64730DFED0F97AFEE5FA0F" box="[285,377,1780,1806]" name="China" pageId="3" pageNumber="116">CHINA</collectingCountry>
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.
|
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<collectingRegion id="49E5F823AB64730DFE4FF97AFDA5FA0C" box="[386,569,1779,1806]" country="China" name="Hunan" pageId="3" pageNumber="116">Hunan Province</collectingRegion>
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:
|
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<collectingMunicipality id="6BFAACBBAB64730DFD8CF97AFCBCFA0C" box="[577,800,1779,1806]" pageId="3" pageNumber="116">East Dongting Lake</collectingMunicipality>
|
||
, sampling point in the littoral zone (
|
||
<geoCoordinate id="EE155006AB64730DFB68F97BFAB8FA0F" box="[1189,1316,1780,1808]" degrees="29" direction="north" minutes="19" orientation="latitude" pageId="3" pageNumber="116" precision="15" seconds="7" value="29.318611">29°19′7″ N</geoCoordinate>
|
||
,
|
||
<geoCoordinate id="EE155006AB64730DFAE0F97BFF07FA33" degrees="112" direction="east" minutes="47" orientation="longitude" pageId="3" pageNumber="116" precision="15" seconds="32" value="112.79222">112°47′32″ E</geoCoordinate>
|
||
,
|
||
<elevation id="000CD1F2AB64730DFF65F896FE90FA30" box="[168,268,1815,1842]" metricMagnitude="1" metricUnit="m" metricValue="3.9" pageId="3" pageNumber="116" unit="m" value="39.0">
|
||
<quantity id="4CD99B24AB64730DFF65F896FF7DFA33" box="[168,225,1816,1842]" metricMagnitude="1" metricUnit="m" metricValue="3.9" pageId="3" pageNumber="116" unit="m" value="39.0">39 m</quantity>
|
||
asl
|
||
</elevation>
|
||
.), collected by
|
||
<collectorName id="26D45317AB64730DFE7BF899FD82FA30" box="[438,542,1815,1841]" pageId="3" pageNumber="116">Bing Liu</collectorName>
|
||
,
|
||
<date id="FF9F1001AB64730DFDE4F899FD43FA33" box="[553,735,1815,1842]" pageId="3" pageNumber="116" value="2023-03-05">
|
||
<collectingDate id="EFDBE9E9AB64730DFDE4F899FD43FA33" box="[553,735,1815,1842]" pageId="3" pageNumber="116" value="2023-03-05">
|
||
March 5
|
||
<superScript id="7C549B89AB64730DFD4AF899FD08FA24" attach="none" box="[647,660,1815,1829]" fontSize="6" pageId="3" pageNumber="116">th</superScript>
|
||
, 2023
|
||
</collectingDate>
|
||
</date>
|
||
.
|
||
<typeStatus id="549A8863AB64730DFD24F899FCCAFA30" box="[745,854,1815,1841]" pageId="3" pageNumber="116" type="holotype">Holotype</typeStatus>
|
||
:
|
||
<collectorName id="26D45317AB64730DFCADF899FC06FA30" box="[864,922,1815,1841]" pageId="3" pageNumber="116">Slide</collectorName>
|
||
<specimenCode id="DB879EBAAB64730DFC6CF896FBA4FA33" box="[929,1080,1816,1842]" collectionCode="DIA" country="Angola" httpUri="http://biocol.org/urn:lsid:biocol.org:col:14994" lsid="urn:lsid:biocol.org:col:14994" name="Museu do Dundo" pageId="3" pageNumber="116" type="Herbarium">DIA2024001</specimenCode>
|
||
, specimen circled on slide =
|
||
<figureCitation id="131A2A44AB64730DFAB2F899FF0AFA57" captionStart="FIGURES 1–4" captionStartId="2.[136,243,1737,1759]" captionTargetBox="[151,1435,314,1710]" captionTargetId="figure-105@2.[151,1435,314,1710]" captionTargetPageId="2" captionText="FIGURES 1–4. Gyrosigma dongtingense, sp. nov., LM, ×630. 1–4. Four valves showing two different types: S-shaped valve (Figs 1, 2) and Ƨ-shaped (reverse S-shaped) valve (Figs 3, 4). 1. Illustration of holotype specimen. Note the convex and concave sides of each halfvalve (labelled in Fig. 3) and the two curvatures of each half of the raphe sternum (labelled in Fig. 4). Scale bar = 20 μm." figureDoi="http://doi.org/10.5281/zenodo.13214605" httpUri="https://zenodo.org/record/13214605/files/figure.png" pageId="3" pageNumber="116">Fig. 1</figureCitation>
|
||
, deposited in the
|
||
<location id="8EFE601AAB64730DFE91F8B5FD5CFA54" LSID="urn:lsid:plazi:treatment:038887D7AB66730BFF45F8DAFC1FFC25:8EFE601AAB64730DFE91F8B5FD5CFA54" box="[348,704,1851,1877]" country="China" latitude="29.318611" longLatPrecision="20" longitude="112.79222" municipality="East Dongting Lake" name="Herbarium of Jishou University" pageId="3" pageNumber="116" stateProvince="Hunan">Herbarium of Jishou University</location>
|
||
(
|
||
<collectionCode id="ED30AE04AB64730DFD02F8B2FD60FA57" box="[719,764,1852,1878]" country="China" httpUri="http://biocol.org/urn:lsid:biocol.org:col:13402" lsid="urn:lsid:biocol.org:col:13402" name="Jishou University" pageId="3" pageNumber="116" type="Herbarium">JIU</collectionCode>
|
||
), China. Registration: http://phycobank.org/ 104492.
|
||
</materialsCitation>
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C33B654AAB64730DFF70F8EEFC72FA78" box="[189,1006,1887,1914]" pageId="3" pageNumber="116" type="etymology">
|
||
<paragraph id="8B9E36C1AB64730DFF70F8EEFC72FA78" blockId="3.[136,1452,1203,1914]" box="[189,1006,1887,1914]" pageId="3" pageNumber="116">
|
||
<emphasis id="B955EAD3AB64730DFF70F8EEFEF8FA7B" bold="true" box="[189,356,1888,1914]" pageId="3" pageNumber="116">Etymology:—</emphasis>
|
||
Named after Dongting Lake where the species was found.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<caption id="DF5E6649AB63730AFF45F917FD2EFA1A" ID-DOI="http://doi.org/10.5281/zenodo.13214609" ID-Zenodo-Dep="13214609" httpUri="https://zenodo.org/record/13214609/files/figure.png" pageId="4" pageNumber="117" startId="4.[136,243,1689,1711]" targetBox="[151,1436,190,1665]" targetPageId="4" targetType="figure">
|
||
<paragraph id="8B9E36C1AB63730AFF45F917FD2EFA1A" blockId="4.[136,1452,1689,1819]" pageId="4" pageNumber="117">
|
||
<emphasis id="B955EAD3AB63730AFF45F917FEA4FBAF" bold="true" box="[136,312,1689,1711]" pageId="4" pageNumber="117">FIGURES 11–16.</emphasis>
|
||
<taxonomicName id="4C214D42AB63730AFEF3F917FDB0FBAF" box="[318,556,1689,1710]" class="Bacillariophyceae" family="Naviculaceae" genus="Gyrosigma" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="4" pageNumber="117" phylum="Bacillariophyta" rank="species" species="dongtingense" status="sp. nov.">
|
||
<emphasis id="B955EAD3AB63730AFEF3F917FDB0FBAF" box="[318,556,1689,1710]" italics="true" pageId="4" pageNumber="117">Gyrosigma dongtingense</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicNameLabel id="A26657A8AB63730AFDF5F917FD1FFBAF" box="[568,643,1689,1710]" pageId="4" pageNumber="117" rank="species">sp. nov.</taxonomicNameLabel>
|
||
, SEM. 11, 13. Two valve types, either S-shaped or Ƨ-shaped, in external view. 12, 14. Middle part details from Fig. 11 and Fig. 13, respectively, note that both external proximal raphe fissures are deflected towards the convex side of each half-valve. 15, 16. Two valve types, either S-shaped or Ƨ-shaped, in internal view. Note the axial costa (four wavy arrows) along the raphe sternum. Scale bar = 10 μm (Figs 11–16).
|
||
</paragraph>
|
||
</caption>
|
||
<subSubSection id="C33B654AAB63730BFF70F8C7FC1FFC25" lastPageId="5" lastPageNumber="118" pageId="4" pageNumber="117" type="biology_ecology">
|
||
<paragraph id="8B9E36C1AB63730BFF70F8C7FC1FFC25" blockId="4.[136,1452,1865,2072]" lastBlockId="5.[136,1452,158,293]" lastPageId="5" lastPageNumber="118" pageId="4" pageNumber="117">
|
||
<emphasis id="B955EAD3AB63730AFF70F8C7FEDDFA62" bold="true" box="[189,321,1865,1891]" pageId="4" pageNumber="117">Ecology:—</emphasis>
|
||
<taxonomicName id="4C214D42AB63730AFE8FF8C4FDC4FA62" box="[322,600,1865,1892]" class="Bacillariophyceae" family="Naviculaceae" genus="Gyrosigma" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="4" pageNumber="117" phylum="Bacillariophyta" rank="species" species="dongtingense" status="sp. nov.">
|
||
<emphasis id="B955EAD3AB63730AFE8FF8C4FDC4FA62" box="[322,600,1865,1892]" italics="true" pageId="4" pageNumber="117">Gyrosigma dongtingense</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="A26657A8AB63730AFD93F8C4FD2FFA65" box="[606,691,1866,1892]" pageId="4" pageNumber="117" rank="species">sp. nov.</taxonomicNameLabel>
|
||
is a rare species as it was found only in one of the 30 diatom samples collected from the surface sediments of East Dongting Lake.Associated species comprised
|
||
<taxonomicName id="4C214D42AB63730AFB9EF8E3FE08FAAD" authority="(Ehrenberg 1843: 417) D. G. Mann" authorityName="D. G. Mann" baseAuthorityName="Ehrenberg" baseAuthorityPageNumber="417" baseAuthorityYear="1843" class="Bacillariophyceae" family="Stauroneidaceae" genus="Craticula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="4" pageNumber="117" phylum="Bacillariophyta" rank="species" species="ambigua">
|
||
<emphasis id="B955EAD3AB63730AFB9EF8E3FABBFA86" box="[1107,1319,1901,1927]" italics="true" pageId="4" pageNumber="117">Craticula ambigua</emphasis>
|
||
(
|
||
<bibRefCitation id="EFB04B30AB63730AFAF8F8E3FF63FAAA" author="Ehrenberg, C. G." pageId="4" pageNumber="117" pagination="291 - 445" refId="ref5152" refString="Ehrenberg, C. G. (1843) Verbreitung und Einfluss des mikroskopischen Lebens in Sud- und Nord-Amerika. Abhandlungen der Koniglichen Akademie der Wissenschaften zu Berlin 1841: 291 - 445." type="journal article" year="1843">Ehrenberg 1843: 417</bibRefCitation>
|
||
) D.G. Mann
|
||
</taxonomicName>
|
||
(in
|
||
<bibRefCitation id="EFB04B30AB63730AFE07F81FFD7CFAAA" author="Round, F. E. & Crawford, R. M. & Mann, D. G." box="[458,736,1937,1964]" pageId="4" pageNumber="117" refId="ref6610" refString="Round, F. E., Crawford, R. M. & Mann, D. G. (1990) The diatoms: biology and morphology of the genera. Cambridge University Press, Cambridge, 747 pp." type="book" year="1990">
|
||
Round
|
||
<emphasis id="B955EAD3AB63730AFDEDF81CFDC9FAAA" box="[544,597,1937,1963]" italics="true" pageId="4" pageNumber="117">et al</emphasis>
|
||
. 1990: 666
|
||
</bibRefCitation>
|
||
),
|
||
<taxonomicName id="4C214D42AB63730AFD35F81CFA97FAAD" authority="(Kutzing 1834: 549) D. G. Mann" authorityName="D. G. Mann" baseAuthorityName="Kutzing" baseAuthorityPageNumber="549" baseAuthorityYear="1834" box="[760,1291,1937,1964]" class="Bacillariophyceae" family="Stauroneidaceae" genus="Craticula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="4" pageNumber="117" phylum="Bacillariophyta" rank="species" species="cuspidata">
|
||
<emphasis id="B955EAD3AB63730AFD35F81CFC16FAAA" box="[760,906,1937,1964]" italics="true" pageId="4" pageNumber="117">C. cuspidata</emphasis>
|
||
(
|
||
<bibRefCitation id="EFB04B30AB63730AFC55F81FFBEAFAAD" author="Kutzing, F. T." box="[920,1142,1937,1964]" pageId="4" pageNumber="117" pagination="529 - 620" refId="ref5631" refString="Kutzing, F. T. (1834 ' 1833 ') Synopsis diatomearum oder Versuch einer systematischen Zusammenstellung der Diatomeen. Linnaea 8: 529 - 620. https: // doi. org / 10.5962 / bhl. title. 65634" type="book chapter" year="1834">Kützing 1834: 549</bibRefCitation>
|
||
) D.G. Mann
|
||
</taxonomicName>
|
||
(in
|
||
<bibRefCitation id="EFB04B30AB63730AFA8CF81FFEB8FACE" author="Round, F. E. & Crawford, R. M. & Mann, D. G." pageId="4" pageNumber="117" refId="ref6610" refString="Round, F. E., Crawford, R. M. & Mann, D. G. (1990) The diatoms: biology and morphology of the genera. Cambridge University Press, Cambridge, 747 pp." type="book" year="1990">
|
||
Round
|
||
<emphasis id="B955EAD3AB63730AFA5AF81CFF02FACE" italics="true" pageId="4" pageNumber="117">et al</emphasis>
|
||
. 1990: 666
|
||
</bibRefCitation>
|
||
),
|
||
<taxonomicName id="4C214D42AB63730AFEF4F83BFA3BFACE" authority="(Grunow 1860: 538) Kulikovskiy, Kociolek, Tusset & T. Ludwig (2019: 178)" authorityName="Kulikovskiy, Kociolek, Tusset & T. Ludwig" authorityPageNumber="178" authorityYear="2019" baseAuthorityName="Grunow" baseAuthorityPageNumber="538" baseAuthorityYear="1860" box="[313,1447,1973,2000]" class="Bacillariophyceae" family="Stauroneidaceae" genus="Dorofeyukea" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="4" pageNumber="117" phylum="Bacillariophyta" rank="species" species="kotschyi">
|
||
<emphasis id="B955EAD3AB63730AFEF4F83BFDB7FACE" box="[313,555,1973,1999]" italics="true" pageId="4" pageNumber="117">Dorofeyukea kotschyi</emphasis>
|
||
(
|
||
<bibRefCitation id="EFB04B30AB63730AFDF7F83BFC8FFAD1" author="Grunow, A." box="[570,787,1973,2000]" pageId="4" pageNumber="117" pagination="503 - 582" refId="ref5288" refString="Grunow, A. (1860) Uber neue oder ungenugend gekannte Algen. Erste Folge, Diatomeen, Familie Naviculaceen. Verhandlungen der kaiserlich-koniglichen zoologisch-botanischen Gesellschaft in Wien 10: 503 - 582." type="journal article" year="1860">Grunow 1860: 538</bibRefCitation>
|
||
) Kulikovskiy, Kociolek, Tusset & T. Ludwig (2019: 178)
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C214D42AB63730AFF45F854FCA6FAF5" authority="(Grunow 1860: 561) Cleve (1894: 115)" authorityName="Cleve" authorityPageNumber="115" authorityYear="1894" baseAuthorityName="Grunow" baseAuthorityPageNumber="561" baseAuthorityYear="1860" box="[136,826,2009,2036]" class="Bacillariophyceae" family="Naviculaceae" genus="Gyrosigma" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="4" pageNumber="117" phylum="Bacillariophyta" rank="species" species="kuetzingii">
|
||
<emphasis id="B955EAD3AB63730AFF45F854FEE4FAF2" box="[136,376,2009,2036]" italics="true" pageId="4" pageNumber="117">Gyrosigma kuetzingii</emphasis>
|
||
(
|
||
<bibRefCitation id="EFB04B30AB63730AFE4BF857FDC1FAF5" author="Grunow, A." box="[390,605,2009,2036]" pageId="4" pageNumber="117" pagination="503 - 582" refId="ref5288" refString="Grunow, A. (1860) Uber neue oder ungenugend gekannte Algen. Erste Folge, Diatomeen, Familie Naviculaceen. Verhandlungen der kaiserlich-koniglichen zoologisch-botanischen Gesellschaft in Wien 10: 503 - 582." type="journal article" year="1860">Grunow 1860: 561</bibRefCitation>
|
||
)
|
||
<bibRefCitation id="EFB04B30AB63730AFDA1F857FCA6FAF5" author="Cleve, P. T." box="[620,826,2009,2036]" pageId="4" pageNumber="117" pagination="1 - 194" refId="ref5025" refString="Cleve, P. T. (1894) Synopsis of the naviculoid diatoms. Part I. Kongliga Svenska Vetenskapsakademiens Handlingar Series 4 26 (2): 1 - 194." type="journal article" year="1894">Cleve (1894: 115)</bibRefCitation>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C214D42AB63730AFC8BF857FA30FAF2" authority="(Ehrenberg 1843: 413) Grunow" authorityName="Grunow" baseAuthorityName="Ehrenberg" baseAuthorityPageNumber="413" baseAuthorityYear="1843" box="[838,1452,2009,2035]" class="Eurotiomycetes" genus="Hantzschia" kingdom="Fungi" order="Eurotiales" pageId="4" pageNumber="117" phylum="Ascomycota" rank="species" species="amphioxys">
|
||
<emphasis id="B955EAD3AB63730AFC8BF857FBDFFAF2" box="[838,1091,2009,2035]" italics="true" pageId="4" pageNumber="117">Hantzschia amphioxys</emphasis>
|
||
(
|
||
<bibRefCitation id="EFB04B30AB63730AFB9CF857FADCFAF2" author="Ehrenberg, C. G." box="[1105,1344,2009,2035]" pageId="4" pageNumber="117" pagination="291 - 445" refId="ref5152" refString="Ehrenberg, C. G. (1843) Verbreitung und Einfluss des mikroskopischen Lebens in Sud- und Nord-Amerika. Abhandlungen der Koniglichen Akademie der Wissenschaften zu Berlin 1841: 291 - 445." type="journal article" year="1843">Ehrenberg 1843: 413</bibRefCitation>
|
||
) Grunow
|
||
</taxonomicName>
|
||
(in
|
||
<bibRefCitation id="EFB04B30AB63730AFF62F873FE6CF516" author="Cleve, P. T. & Grunow, A." box="[175,496,2045,2071]" pageId="4" pageNumber="117" pagination="1 - 121" refId="ref5058" refString="Cleve, P. T. & Grunow, A. (1880) Beitrage zur Kenntniss der arctischen Diatomeen. Kongliga Svenska Vetenskaps-Akademiens Handlingar 17 (2): 1 - 121." type="journal article" year="1880">Cleve & Grunow 1880: 103</bibRefCitation>
|
||
),
|
||
<taxonomicName id="4C214D42AB63730AFDC8F873FC35F516" authority="Kutzing (1844: 61)" authorityName="Kutzing" authorityPageNumber="61" authorityYear="1844" box="[517,937,2045,2071]" class="Bacillariophyceae" family="Surirellaceae" genus="Surirella" higherTaxonomySource="GBIF" kingdom="Chromista" order="Surirellales" pageId="4" pageNumber="117" phylum="Bacillariophyta" rank="species" species="angusta">
|
||
<emphasis id="B955EAD3AB63730AFDC8F873FD54F516" box="[517,712,2045,2071]" italics="true" pageId="4" pageNumber="117">Surirella angusta</emphasis>
|
||
<bibRefCitation id="EFB04B30AB63730AFD03F873FC35F516" author="Kutzing, F. T." box="[718,937,2045,2071]" pageId="4" pageNumber="117" refId="ref5674" refString="Kutzing, F. T. (1844) Die Kieselschaligen Bacillarien oder Diatomeen. Zu finden bei W. Kohne, Nordhausen, 152 pp. https: // doi. org / 10.5962 / bhl. title. 64360" type="book" year="1844">Kützing (1844: 61)</bibRefCitation>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C214D42AB63730AFC7AF870FB16F516" authority="Grunow" authorityName="Grunow" box="[951,1162,2045,2072]" class="Bacillariophyceae" family="Surirellaceae" genus="Surirella" higherTaxonomySource="GBIF" kingdom="Chromista" order="Surirellales" pageId="4" pageNumber="117" phylum="Bacillariophyta" rank="species" species="suecica">
|
||
<emphasis id="B955EAD3AB63730AFC7AF870FBBBF516" box="[951,1063,2046,2072]" italics="true" pageId="4" pageNumber="117">S. suecica</emphasis>
|
||
Grunow
|
||
</taxonomicName>
|
||
(in
|
||
<bibRefCitation id="EFB04B30AB63730AFB75F870FA1FF516" author="Van Heurck, H." box="[1208,1411,2045,2072]" pageId="4" pageNumber="117" pagination="31 - 77" refId="ref7057" refString="Van Heurck, H. (1881) Synopsis des Diatomees de Belgique Atlas. Ducaju et Cie, Anvers, pp. pls XXXI - LXXVII [31 - 77]." type="book chapter" year="1881">Van Heurck 1881</bibRefCitation>
|
||
: pl. LXXXIII, fig. 19),
|
||
<taxonomicName id="4C214D42AB62730BFEA5FF10FD7CFDB9" authority="D. M. Williams" authorityName="D. M. Williams" authorityYear="2019" box="[360,736,158,185]" class="Bacillariophyceae" family="Fragilariaceae" genus="Ulnaria" higherTaxonomySource="GBIF" kingdom="Chromista" order="Fragilariales" pageId="5" pageNumber="118" phylum="Bacillariophyta" rank="species" species="rhombus">
|
||
<emphasis id="B955EAD3AB62730BFEA5FF10FDB0FDB9" box="[360,556,158,184]" italics="true" pageId="5" pageNumber="118">Ulnaria rhombus</emphasis>
|
||
D.M. Williams
|
||
</taxonomicName>
|
||
(in
|
||
<bibRefCitation id="EFB04B30AB62730BFCDEFF10FC67FDB8" author="Liu, B. & Williams, D. M. & Liu, Q. Y. & Yang, X. X." box="[787,1019,158,185]" pageId="5" pageNumber="118" pagination="49 - 65" refId="ref5998" refString="Liu, B., Williams, D. M., Liu, Q. Y. & Yang, X. X. (2019 a) Three species of Ulnaria (Bacillariophyceae) from China, with reference to the valve central area and apices. Diatom Research 34 (1): 49 - 65. https: // doi. org / 10.1080 / 0269249 X. 2019.1577761" type="journal article" year="2019">
|
||
Liu
|
||
<emphasis id="B955EAD3AB62730BFC8EFF11FCEBFDB9" box="[835,887,158,184]" italics="true" pageId="5" pageNumber="118">et al</emphasis>
|
||
. 2019a: 54
|
||
</bibRefCitation>
|
||
) and some species of
|
||
<taxonomicName id="4C214D42AB62730BFB32FF10FA3BFDB8" authority="Bory" authorityName="Bory" box="[1279,1447,158,185]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="5" pageNumber="118" phylum="Ochrophyta" rank="genus">
|
||
<emphasis id="B955EAD3AB62730BFB32FF10FAF8FDB9" box="[1279,1380,158,184]" italics="true" pageId="5" pageNumber="118">Navicula</emphasis>
|
||
Bory
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C214D42AB62730BFF45FF4CFED7FDDD" authority="Hassall" authorityName="Hassall" box="[136,331,194,220]" class="Insecta" family="Menoponidae" genus="Nitzschia" kingdom="Animalia" order="Psocodea" pageId="5" pageNumber="118" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B955EAD3AB62730BFF45FF4CFF6CFDDD" box="[136,240,194,220]" italics="true" pageId="5" pageNumber="118">Nitzschia</emphasis>
|
||
Hassall
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C214D42AB62730BFE98FF4CFD13FDDD" authority="Mereschkowsky" authorityName="Mereschkowsky" box="[341,655,194,220]" class="Bacillariophyceae" family="Sellaphoraceae" genus="Sellaphora" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="5" pageNumber="118" phylum="Bacillariophyta" rank="genus">
|
||
<emphasis id="B955EAD3AB62730BFE98FF4CFE4CFDDD" box="[341,464,194,220]" italics="true" pageId="5" pageNumber="118">Sellaphora</emphasis>
|
||
Mereschkowsky
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C214D42AB62730BFD55FF4CFC32FDDD" authority="Smith. Such" authorityName="Smith. Such" box="[664,942,194,220]" class="Bacillariophyceae" family="Bacillariaceae" genus="Tryblionella" higherTaxonomySource="GBIF" kingdom="Chromista" order="Bacillariales" pageId="5" pageNumber="118" phylum="Bacillariophyta" rank="genus">
|
||
<emphasis id="B955EAD3AB62730BFD55FF4CFCBDFDDD" box="[664,801,194,220]" italics="true" pageId="5" pageNumber="118">Tryblionella</emphasis>
|
||
Smith. Such
|
||
</taxonomicName>
|
||
an assemblage suggests alkaline and meso- to eutrophic conditions. The following environmental parameters were measured in the field. Conductivity was 494 ± 0.9 μS∙
|
||
<superScript id="7C549B89AB62730BFF66FE84FF41FC19" attach="right" box="[171,221,266,292]" fontSize="6" pageId="5" pageNumber="118">cm-1</superScript>
|
||
, pH was 8.4 ± 0.1 and water temperature was 27.8 ± 0.3 °C.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |