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43 KiB
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253 lines
43 KiB
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<document ID-DOI="10.11646/phytotaxa.593.1.1" ID-GBIF-Dataset="ef558f00-24a4-4671-bf56-df3c1d61ecd1" ID-ISSN="1179-3163" ID-Zenodo-Dep="7875089" IM.bibliography_approvedBy="tatiana" IM.illustrations_approvedBy="tatiana" IM.materialsCitations_approvedBy="tatiana" IM.metadata_approvedBy="tatiana" IM.tables_approvedBy="tatiana" IM.taxonomicNames_approvedBy="tatiana" IM.treatments_approvedBy="tatiana" checkinTime="1682061103176" checkinUser="plazi" docAuthor="Jovanovska, Elena, Wilson, Mallory C., Hamilton, Paul B. & Stone, Jeffery" docDate="2023" docId="038487E2FFCD2651BCF1FF0AB96175CC" docLanguage="en" docName="phytotaxa.593.1.1.pdf" docOrigin="Phytotaxa 593 (1)" docSource="http://dx.doi.org/10.11646/phytotaxa.593.1.1" docStyle="DocumentStyle:F08184CE06D8A97EA3E6DE35D99648B0.2:Phytotaxa.2014-.monograph" docStyleId="F08184CE06D8A97EA3E6DE35D99648B0" docStyleName="Phytotaxa.2014-.monograph" docStyleVersion="2" docTitle="Diploneis major Jovanovska & Wilson & Hamilton & Stone 2023, sp. nov." docType="treatment" docVersion="4" lastPageNumber="20" masterDocId="FFBDFF9AFFDE2642BC79FF97B8647004" masterDocTitle="Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas" masterLastPageNumber="102" masterPageNumber="1" pageNumber="20" updateTime="1683016984500" updateUser="tatiana">
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<mods:titleInfo>
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<mods:title>Morphological and molecular characterization of twenty-five new Diploneis species (Bacillariophyta) from Lake Tanganyika and its surrounding areas</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Jovanovska, Elena</mods:namePart>
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<mods:nameIdentifier type="ORCID">0000-0002-3413-3683</mods:nameIdentifier>
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<mods:affiliation>Department of Paleoanthropology, Senckenberg Research Institute and Natural History Museum Frankfurt, Frankfurt, Germany & jovanovska. eci @ gmail. com; https: // orcid. org / 0000 - 0002 - 3413 - 3683</mods:affiliation>
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<mods:nameIdentifier type="email">jovanovska.eci@gmail.com</mods:nameIdentifier>
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<mods:name type="personal">
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Wilson, Mallory C.</mods:namePart>
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<mods:nameIdentifier type="ORCID">0000-0002-2852-125X</mods:nameIdentifier>
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<mods:affiliation>Department of Paleoanthropology, Senckenberg Research Institute and Natural History Museum Frankfurt, Frankfurt, Germany & Indiana State University, Indiana State University, Terre Haute, IN, USA & mwilson 108 @ sycamores. indstate. edu; https: // orcid. org / 0000 - 0002 - 2852 - 125 X</mods:affiliation>
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<mods:nameIdentifier type="email">mwilson108@sycamores.indstate.edu</mods:nameIdentifier>
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Hamilton, Paul B.</mods:namePart>
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<mods:nameIdentifier type="ORCID">0000-0001-6938-6341</mods:nameIdentifier>
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<mods:affiliation>Phycology Section, Research and Collections Division, Canadian Museum of Nature, Ottawa, Canada & phamilton @ nature. ca; https: // orcid. org / 0000 - 0001 - 6938 - 6341</mods:affiliation>
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<mods:nameIdentifier type="email">phamilton@nature.ca</mods:nameIdentifier>
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</mods:name>
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<mods:name type="personal">
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Stone, Jeffery</mods:namePart>
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<mods:nameIdentifier type="ORCID">0000-0002-1313-0643</mods:nameIdentifier>
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<mods:affiliation>Department of Paleoanthropology, Senckenberg Research Institute and Natural History Museum Frankfurt, Frankfurt, Germany & Indiana State University, Indiana State University, Terre Haute, IN, USA & Department of Paleoanthropology, Senckenberg Research Institute and Natural History Museum Frankfurt, Frankfurt, Germany & jeffery. stone @ indstate. edu; https: // orcid. org / 0000 - 0002 - 1313 - 0643 * Corresponding author & Department of Paleoanthropology, Senckenberg Research Institute and Natural History Museum Frankfurt, Frankfurt, Germany</mods:affiliation>
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<mods:nameIdentifier type="email">jeffery.stone@indstate.edu</mods:nameIdentifier>
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<mods:title>Phytotaxa</mods:title>
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<mods:part>
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<mods:date>2023</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2023-04-21</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>593</mods:number>
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</mods:detail>
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<mods:detail type="issue">
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<mods:number>1</mods:number>
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<mods:extent unit="page">
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<mods:start>1</mods:start>
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<mods:end>102</mods:end>
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<mods:location>
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<mods:url>http://dx.doi.org/10.11646/phytotaxa.593.1.1</mods:url>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">10.11646/phytotaxa.593.1.1</mods:identifier>
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<mods:identifier type="GBIF-Dataset">ef558f00-24a4-4671-bf56-df3c1d61ecd1</mods:identifier>
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<mods:identifier type="ISSN">1179-3163</mods:identifier>
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<mods:identifier type="Zenodo-Dep">7875089</mods:identifier>
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<treatment ID-DOI="http://doi.org/10.5281/zenodo.7875111" ID-Zenodo-Dep="7875111" LSID="urn:lsid:plazi:treatment:038487E2FFCD2651BCF1FF0AB96175CC" httpUri="http://treatment.plazi.org/id/038487E2FFCD2651BCF1FF0AB96175CC" lastPageNumber="20" pageId="19" pageNumber="20">
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<subSubSection pageId="19" pageNumber="20" type="nomenclature">
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<paragraph blockId="19.[136,817,157,184]" box="[136,817,157,184]" pageId="19" pageNumber="20">
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<heading box="[136,817,157,184]" fontSize="11" level="2" pageId="19" pageNumber="20" reason="5">
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<emphasis box="[136,414,157,184]" italics="true" pageId="19" pageNumber="20">
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<taxonomicName authority="Jovanovska & Wilson & Hamilton & Stone, 2023" authorityName="Jovanovska & Wilson & Hamilton & Stone" authorityYear="2023" box="[136,322,157,184]" class="Bacillariophyceae" family="Naviculaceae" genus="Diploneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="19" pageNumber="20" phylum="Bacillariophyta" rank="species" species="major" status="sp. nov.">
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<emphasis bold="true" box="[136,322,157,184]" italics="true" pageId="19" pageNumber="20">Diploneis major</emphasis>
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</taxonomicName>
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<taxonomicNameLabel box="[329,414,159,184]" pageId="19" pageNumber="20" rank="species">sp. nov.</taxonomicNameLabel>
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</emphasis>
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(LM
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<figureCitation box="[479,607,158,184]" captionStart="FIGURES 61–66" captionStartId="20.[136,243,1660,1682]" captionTargetBox="[151,1433,194,1634]" captionTargetId="figure-23@20.[150,1434,193,1636]" captionTargetPageId="20" captionText="FIGURES 61–66. Diploneis major sp. nov., LM valve views, Lake Tanganyika.All specimens are from the type material, Isanga Bay. Fig. 65. Holotype specimen. Scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.7875127" httpUri="https://zenodo.org/record/7875127/files/figure.png" pageId="19" pageNumber="20">Figs 61–66</figureCitation>
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, SEM
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<figureCitation box="[682,809,158,184]" captionStart="FIGURES 67–72" captionStartId="21.[136,243,1752,1774]" captionTargetBox="[151,1433,194,1726]" captionTargetId="figure-18@21.[150,1434,193,1728]" captionTargetPageId="21" captionText="FIGURES 67–72. Diploneis major sp. nov., SEM external (Figs 67, 68) and internal (Figs 69–72) valve views, Lake Tanganyika. 67–69, 71, 72. Specimens from Isanga Bay. 70. Specimen from Kiganza Bay. 67. View of a whole valve, showing canal structure, striae structure, and inter-areolar fin-like shaped silica ornamentations. 68. Detail mid-valve, showing shallow depression with proximal raphe ends and undistinguishable hyaline area separating the alveoli from the canal; white arrowed cribra structure. 69. Distal raphe ends with deflected terminal fissures. 70. Valve view. 71. Distal raphe endings slightly elevated and distant from the valve apices. 72. Central area with simple and slightly elevated proximal raphe ends; white arrowed thin perforated silica layer covering the alveoli. Scale bars = 10 μm (Figs 67, 70), 5 μm (Figs 68, 69, 71, 72)." figureDoi="http://doi.org/10.5281/zenodo.7875131" httpUri="https://zenodo.org/record/7875131/files/figure.png" pageId="19" pageNumber="20">Figs 67–72</figureCitation>
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)
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</heading>
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</paragraph>
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<paragraph blockId="19.[136,1452,230,1481]" pageId="19" pageNumber="20">
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Valves are weakly asymmetric, broadly elliptic to rhombic-elliptic becoming elliptic-circular with smaller cell size (
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<figureCitation box="[144,274,266,292]" captionStart-0="FIGURES 61–66" captionStart-1="FIGURES 67–72" captionStartId-0="20.[136,243,1660,1682]" captionStartId-1="21.[136,243,1752,1774]" captionTargetBox-0="[151,1433,194,1634]" captionTargetBox-1="[151,1433,194,1726]" captionTargetId-0="figure-23@20.[150,1434,193,1636]" captionTargetId-1="figure-18@21.[150,1434,193,1728]" captionTargetPageId-0="20" captionTargetPageId-1="21" captionText-0="FIGURES 61–66. Diploneis major sp. nov., LM valve views, Lake Tanganyika.All specimens are from the type material, Isanga Bay. Fig. 65. Holotype specimen. Scale bar = 10 μm." captionText-1="FIGURES 67–72. Diploneis major sp. nov., SEM external (Figs 67, 68) and internal (Figs 69–72) valve views, Lake Tanganyika. 67–69, 71, 72. Specimens from Isanga Bay. 70. Specimen from Kiganza Bay. 67. View of a whole valve, showing canal structure, striae structure, and inter-areolar fin-like shaped silica ornamentations. 68. Detail mid-valve, showing shallow depression with proximal raphe ends and undistinguishable hyaline area separating the alveoli from the canal; white arrowed cribra structure. 69. Distal raphe ends with deflected terminal fissures. 70. Valve view. 71. Distal raphe endings slightly elevated and distant from the valve apices. 72. Central area with simple and slightly elevated proximal raphe ends; white arrowed thin perforated silica layer covering the alveoli. Scale bars = 10 μm (Figs 67, 70), 5 μm (Figs 68, 69, 71, 72)." figureDoi-0="http://doi.org/10.5281/zenodo.7875127" figureDoi-1="http://doi.org/10.5281/zenodo.7875131" httpUri-0="https://zenodo.org/record/7875127/files/figure.png" httpUri-1="https://zenodo.org/record/7875131/files/figure.png" pageId="19" pageNumber="20">Figs 61–67</figureCitation>
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). Valve length is 30–62.5 μm and valve width is 21.5–37 μm. The axial area is narrow, linear to lanceolate, expanding into the longitudinally elongate and weakly asymmetric central area (
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<figureCitation box="[1082,1173,302,328]" captionStart="FIGURES 61–66" captionStartId="20.[136,243,1660,1682]" captionTargetBox="[151,1433,194,1634]" captionTargetId="figure-23@20.[150,1434,193,1636]" captionTargetPageId="20" captionText="FIGURES 61–66. Diploneis major sp. nov., LM valve views, Lake Tanganyika.All specimens are from the type material, Isanga Bay. Fig. 65. Holotype specimen. Scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.7875127" httpUri="https://zenodo.org/record/7875127/files/figure.png" pageId="19" pageNumber="20">Figs 61</figureCitation>
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,
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<figureCitation box="[1190,1221,302,328]" captionStart="FIGURES 67–72" captionStartId="21.[136,243,1752,1774]" captionTargetBox="[151,1433,194,1726]" captionTargetId="figure-18@21.[150,1434,193,1728]" captionTargetPageId="21" captionText="FIGURES 67–72. Diploneis major sp. nov., SEM external (Figs 67, 68) and internal (Figs 69–72) valve views, Lake Tanganyika. 67–69, 71, 72. Specimens from Isanga Bay. 70. Specimen from Kiganza Bay. 67. View of a whole valve, showing canal structure, striae structure, and inter-areolar fin-like shaped silica ornamentations. 68. Detail mid-valve, showing shallow depression with proximal raphe ends and undistinguishable hyaline area separating the alveoli from the canal; white arrowed cribra structure. 69. Distal raphe ends with deflected terminal fissures. 70. Valve view. 71. Distal raphe endings slightly elevated and distant from the valve apices. 72. Central area with simple and slightly elevated proximal raphe ends; white arrowed thin perforated silica layer covering the alveoli. Scale bars = 10 μm (Figs 67, 70), 5 μm (Figs 68, 69, 71, 72)." figureDoi="http://doi.org/10.5281/zenodo.7875131" httpUri="https://zenodo.org/record/7875131/files/figure.png" pageId="19" pageNumber="20">68</figureCitation>
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), 3.7–6.5 μm wide. Externally, the longitudinal canal is broad, lanceolate to linear, slightly expanded in the middle of the valve with three to four rows of cribrate (8–12 poroids) areolae narrowing into two to one at the valve apices (
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<figureCitation box="[1171,1300,374,400]" captionStart="FIGURES 67–72" captionStartId="21.[136,243,1752,1774]" captionTargetBox="[151,1433,194,1726]" captionTargetId="figure-18@21.[150,1434,193,1728]" captionTargetPageId="21" captionText="FIGURES 67–72. Diploneis major sp. nov., SEM external (Figs 67, 68) and internal (Figs 69–72) valve views, Lake Tanganyika. 67–69, 71, 72. Specimens from Isanga Bay. 70. Specimen from Kiganza Bay. 67. View of a whole valve, showing canal structure, striae structure, and inter-areolar fin-like shaped silica ornamentations. 68. Detail mid-valve, showing shallow depression with proximal raphe ends and undistinguishable hyaline area separating the alveoli from the canal; white arrowed cribra structure. 69. Distal raphe ends with deflected terminal fissures. 70. Valve view. 71. Distal raphe endings slightly elevated and distant from the valve apices. 72. Central area with simple and slightly elevated proximal raphe ends; white arrowed thin perforated silica layer covering the alveoli. Scale bars = 10 μm (Figs 67, 70), 5 μm (Figs 68, 69, 71, 72)." figureDoi="http://doi.org/10.5281/zenodo.7875131" httpUri="https://zenodo.org/record/7875131/files/figure.png" pageId="19" pageNumber="20">Figs 67, 68</figureCitation>
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). Internally, a thick non-porous slightly raised silica plate encloses the longitudinal canal (
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<figureCitation box="[988,1072,410,436]" captionStart="FIGURES 67–72" captionStartId="21.[136,243,1752,1774]" captionTargetBox="[151,1433,194,1726]" captionTargetId="figure-18@21.[150,1434,193,1728]" captionTargetPageId="21" captionText="FIGURES 67–72. Diploneis major sp. nov., SEM external (Figs 67, 68) and internal (Figs 69–72) valve views, Lake Tanganyika. 67–69, 71, 72. Specimens from Isanga Bay. 70. Specimen from Kiganza Bay. 67. View of a whole valve, showing canal structure, striae structure, and inter-areolar fin-like shaped silica ornamentations. 68. Detail mid-valve, showing shallow depression with proximal raphe ends and undistinguishable hyaline area separating the alveoli from the canal; white arrowed cribra structure. 69. Distal raphe ends with deflected terminal fissures. 70. Valve view. 71. Distal raphe endings slightly elevated and distant from the valve apices. 72. Central area with simple and slightly elevated proximal raphe ends; white arrowed thin perforated silica layer covering the alveoli. Scale bars = 10 μm (Figs 67, 70), 5 μm (Figs 68, 69, 71, 72)." figureDoi="http://doi.org/10.5281/zenodo.7875131" httpUri="https://zenodo.org/record/7875131/files/figure.png" pageId="19" pageNumber="20">Fig. 70</figureCitation>
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). Externally, the raphe is filiform, curved with proximal fissures positioned within shallow teardrop depressions; the fine terminal fissures are bent to the same side of the valve and terminate on the valve face at the mantle (
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<figureCitation box="[963,1095,482,508]" captionStart="FIGURES 67–72" captionStartId="21.[136,243,1752,1774]" captionTargetBox="[151,1433,194,1726]" captionTargetId="figure-18@21.[150,1434,193,1728]" captionTargetPageId="21" captionText="FIGURES 67–72. Diploneis major sp. nov., SEM external (Figs 67, 68) and internal (Figs 69–72) valve views, Lake Tanganyika. 67–69, 71, 72. Specimens from Isanga Bay. 70. Specimen from Kiganza Bay. 67. View of a whole valve, showing canal structure, striae structure, and inter-areolar fin-like shaped silica ornamentations. 68. Detail mid-valve, showing shallow depression with proximal raphe ends and undistinguishable hyaline area separating the alveoli from the canal; white arrowed cribra structure. 69. Distal raphe ends with deflected terminal fissures. 70. Valve view. 71. Distal raphe endings slightly elevated and distant from the valve apices. 72. Central area with simple and slightly elevated proximal raphe ends; white arrowed thin perforated silica layer covering the alveoli. Scale bars = 10 μm (Figs 67, 70), 5 μm (Figs 68, 69, 71, 72)." figureDoi="http://doi.org/10.5281/zenodo.7875131" httpUri="https://zenodo.org/record/7875131/files/figure.png" pageId="19" pageNumber="20">Figs 67–69</figureCitation>
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). Internally, the raphe is curved with simple proximal and distal ends that are slightly elevated in a deep depression formed by the longitudinal canal (
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<figureCitation box="[144,276,554,580]" captionStart="FIGURES 67–72" captionStartId="21.[136,243,1752,1774]" captionTargetBox="[151,1433,194,1726]" captionTargetId="figure-18@21.[150,1434,193,1728]" captionTargetPageId="21" captionText="FIGURES 67–72. Diploneis major sp. nov., SEM external (Figs 67, 68) and internal (Figs 69–72) valve views, Lake Tanganyika. 67–69, 71, 72. Specimens from Isanga Bay. 70. Specimen from Kiganza Bay. 67. View of a whole valve, showing canal structure, striae structure, and inter-areolar fin-like shaped silica ornamentations. 68. Detail mid-valve, showing shallow depression with proximal raphe ends and undistinguishable hyaline area separating the alveoli from the canal; white arrowed cribra structure. 69. Distal raphe ends with deflected terminal fissures. 70. Valve view. 71. Distal raphe endings slightly elevated and distant from the valve apices. 72. Central area with simple and slightly elevated proximal raphe ends; white arrowed thin perforated silica layer covering the alveoli. Scale bars = 10 μm (Figs 67, 70), 5 μm (Figs 68, 69, 71, 72)." figureDoi="http://doi.org/10.5281/zenodo.7875131" httpUri="https://zenodo.org/record/7875131/files/figure.png" pageId="19" pageNumber="20">Figs 70–72</figureCitation>
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). The striae are parallel at mid-valve becoming radiate towards the valve apices,
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10 μm. Striae are uniseriate throughout (
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<figureCitation box="[391,476,590,616]" captionStart="FIGURES 67–72" captionStartId="21.[136,243,1752,1774]" captionTargetBox="[151,1433,194,1726]" captionTargetId="figure-18@21.[150,1434,193,1728]" captionTargetPageId="21" captionText="FIGURES 67–72. Diploneis major sp. nov., SEM external (Figs 67, 68) and internal (Figs 69–72) valve views, Lake Tanganyika. 67–69, 71, 72. Specimens from Isanga Bay. 70. Specimen from Kiganza Bay. 67. View of a whole valve, showing canal structure, striae structure, and inter-areolar fin-like shaped silica ornamentations. 68. Detail mid-valve, showing shallow depression with proximal raphe ends and undistinguishable hyaline area separating the alveoli from the canal; white arrowed cribra structure. 69. Distal raphe ends with deflected terminal fissures. 70. Valve view. 71. Distal raphe endings slightly elevated and distant from the valve apices. 72. Central area with simple and slightly elevated proximal raphe ends; white arrowed thin perforated silica layer covering the alveoli. Scale bars = 10 μm (Figs 67, 70), 5 μm (Figs 68, 69, 71, 72)." figureDoi="http://doi.org/10.5281/zenodo.7875131" httpUri="https://zenodo.org/record/7875131/files/figure.png" pageId="19" pageNumber="20">Fig. 67</figureCitation>
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). The striae are composed of small complex round to rectangular areolae covered with cribra (>40 poroids),
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<quantity box="[380,466,626,652]" metricMagnitude="-1" metricUnit="m" metricValue="2.413" metricValueMax="2.54" metricValueMin="2.286" pageId="19" pageNumber="20" unit="in" value="9.5" valueMax="10.0" valueMin="9.0">9–10 in</quantity>
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10 μm (
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<figureCitation box="[564,649,626,652]" captionStart="FIGURES 67–72" captionStartId="21.[136,243,1752,1774]" captionTargetBox="[151,1433,194,1726]" captionTargetId="figure-18@21.[150,1434,193,1728]" captionTargetPageId="21" captionText="FIGURES 67–72. Diploneis major sp. nov., SEM external (Figs 67, 68) and internal (Figs 69–72) valve views, Lake Tanganyika. 67–69, 71, 72. Specimens from Isanga Bay. 70. Specimen from Kiganza Bay. 67. View of a whole valve, showing canal structure, striae structure, and inter-areolar fin-like shaped silica ornamentations. 68. Detail mid-valve, showing shallow depression with proximal raphe ends and undistinguishable hyaline area separating the alveoli from the canal; white arrowed cribra structure. 69. Distal raphe ends with deflected terminal fissures. 70. Valve view. 71. Distal raphe endings slightly elevated and distant from the valve apices. 72. Central area with simple and slightly elevated proximal raphe ends; white arrowed thin perforated silica layer covering the alveoli. Scale bars = 10 μm (Figs 67, 70), 5 μm (Figs 68, 69, 71, 72)." figureDoi="http://doi.org/10.5281/zenodo.7875131" httpUri="https://zenodo.org/record/7875131/files/figure.png" pageId="19" pageNumber="20">Fig. 68</figureCitation>
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). The cribra has a volae-like shape that could be a real structure or the result of corrosion (white arrow in
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<figureCitation box="[539,624,662,688]" captionStart="FIGURES 67–72" captionStartId="21.[136,243,1752,1774]" captionTargetBox="[151,1433,194,1726]" captionTargetId="figure-18@21.[150,1434,193,1728]" captionTargetPageId="21" captionText="FIGURES 67–72. Diploneis major sp. nov., SEM external (Figs 67, 68) and internal (Figs 69–72) valve views, Lake Tanganyika. 67–69, 71, 72. Specimens from Isanga Bay. 70. Specimen from Kiganza Bay. 67. View of a whole valve, showing canal structure, striae structure, and inter-areolar fin-like shaped silica ornamentations. 68. Detail mid-valve, showing shallow depression with proximal raphe ends and undistinguishable hyaline area separating the alveoli from the canal; white arrowed cribra structure. 69. Distal raphe ends with deflected terminal fissures. 70. Valve view. 71. Distal raphe endings slightly elevated and distant from the valve apices. 72. Central area with simple and slightly elevated proximal raphe ends; white arrowed thin perforated silica layer covering the alveoli. Scale bars = 10 μm (Figs 67, 70), 5 μm (Figs 68, 69, 71, 72)." figureDoi="http://doi.org/10.5281/zenodo.7875131" httpUri="https://zenodo.org/record/7875131/files/figure.png" pageId="19" pageNumber="20">Fig. 68</figureCitation>
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). Each areola opens into deep pits and it is divided by narrow thickened bars that bear small crested fin-like ridge silica ornamentations (
|
||
<figureCitation box="[851,935,698,724]" captionStart="FIGURES 67–72" captionStartId="21.[136,243,1752,1774]" captionTargetBox="[151,1433,194,1726]" captionTargetId="figure-18@21.[150,1434,193,1728]" captionTargetPageId="21" captionText="FIGURES 67–72. Diploneis major sp. nov., SEM external (Figs 67, 68) and internal (Figs 69–72) valve views, Lake Tanganyika. 67–69, 71, 72. Specimens from Isanga Bay. 70. Specimen from Kiganza Bay. 67. View of a whole valve, showing canal structure, striae structure, and inter-areolar fin-like shaped silica ornamentations. 68. Detail mid-valve, showing shallow depression with proximal raphe ends and undistinguishable hyaline area separating the alveoli from the canal; white arrowed cribra structure. 69. Distal raphe ends with deflected terminal fissures. 70. Valve view. 71. Distal raphe endings slightly elevated and distant from the valve apices. 72. Central area with simple and slightly elevated proximal raphe ends; white arrowed thin perforated silica layer covering the alveoli. Scale bars = 10 μm (Figs 67, 70), 5 μm (Figs 68, 69, 71, 72)." figureDoi="http://doi.org/10.5281/zenodo.7875131" httpUri="https://zenodo.org/record/7875131/files/figure.png" pageId="19" pageNumber="20">Fig. 67</figureCitation>
|
||
). The crested fin-shaped silica ornamentations are serrated into ca. 3–5 notched edges (
|
||
<figureCitation box="[601,687,734,760]" captionStart="FIGURES 67–72" captionStartId="21.[136,243,1752,1774]" captionTargetBox="[151,1433,194,1726]" captionTargetId="figure-18@21.[150,1434,193,1728]" captionTargetPageId="21" captionText="FIGURES 67–72. Diploneis major sp. nov., SEM external (Figs 67, 68) and internal (Figs 69–72) valve views, Lake Tanganyika. 67–69, 71, 72. Specimens from Isanga Bay. 70. Specimen from Kiganza Bay. 67. View of a whole valve, showing canal structure, striae structure, and inter-areolar fin-like shaped silica ornamentations. 68. Detail mid-valve, showing shallow depression with proximal raphe ends and undistinguishable hyaline area separating the alveoli from the canal; white arrowed cribra structure. 69. Distal raphe ends with deflected terminal fissures. 70. Valve view. 71. Distal raphe endings slightly elevated and distant from the valve apices. 72. Central area with simple and slightly elevated proximal raphe ends; white arrowed thin perforated silica layer covering the alveoli. Scale bars = 10 μm (Figs 67, 70), 5 μm (Figs 68, 69, 71, 72)." figureDoi="http://doi.org/10.5281/zenodo.7875131" httpUri="https://zenodo.org/record/7875131/files/figure.png" pageId="19" pageNumber="20">Fig. 68</figureCitation>
|
||
). The areolae increase in size towards the valve margins (
|
||
<figureCitation box="[1352,1439,734,760]" captionStart="FIGURES 67–72" captionStartId="21.[136,243,1752,1774]" captionTargetBox="[151,1433,194,1726]" captionTargetId="figure-18@21.[150,1434,193,1728]" captionTargetPageId="21" captionText="FIGURES 67–72. Diploneis major sp. nov., SEM external (Figs 67, 68) and internal (Figs 69–72) valve views, Lake Tanganyika. 67–69, 71, 72. Specimens from Isanga Bay. 70. Specimen from Kiganza Bay. 67. View of a whole valve, showing canal structure, striae structure, and inter-areolar fin-like shaped silica ornamentations. 68. Detail mid-valve, showing shallow depression with proximal raphe ends and undistinguishable hyaline area separating the alveoli from the canal; white arrowed cribra structure. 69. Distal raphe ends with deflected terminal fissures. 70. Valve view. 71. Distal raphe endings slightly elevated and distant from the valve apices. 72. Central area with simple and slightly elevated proximal raphe ends; white arrowed thin perforated silica layer covering the alveoli. Scale bars = 10 μm (Figs 67, 70), 5 μm (Figs 68, 69, 71, 72)." figureDoi="http://doi.org/10.5281/zenodo.7875131" httpUri="https://zenodo.org/record/7875131/files/figure.png" pageId="19" pageNumber="20">Fig. 67</figureCitation>
|
||
). Internally, the alveoli open via a single elongated opening covered with a thin silica perforated layer (white arrow in
|
||
<figureCitation box="[136,219,806,832]" captionStart="FIGURES 67–72" captionStartId="21.[136,243,1752,1774]" captionTargetBox="[151,1433,194,1726]" captionTargetId="figure-18@21.[150,1434,193,1728]" captionTargetPageId="21" captionText="FIGURES 67–72. Diploneis major sp. nov., SEM external (Figs 67, 68) and internal (Figs 69–72) valve views, Lake Tanganyika. 67–69, 71, 72. Specimens from Isanga Bay. 70. Specimen from Kiganza Bay. 67. View of a whole valve, showing canal structure, striae structure, and inter-areolar fin-like shaped silica ornamentations. 68. Detail mid-valve, showing shallow depression with proximal raphe ends and undistinguishable hyaline area separating the alveoli from the canal; white arrowed cribra structure. 69. Distal raphe ends with deflected terminal fissures. 70. Valve view. 71. Distal raphe endings slightly elevated and distant from the valve apices. 72. Central area with simple and slightly elevated proximal raphe ends; white arrowed thin perforated silica layer covering the alveoli. Scale bars = 10 μm (Figs 67, 70), 5 μm (Figs 68, 69, 71, 72)." figureDoi="http://doi.org/10.5281/zenodo.7875131" httpUri="https://zenodo.org/record/7875131/files/figure.png" pageId="19" pageNumber="20">Fig. 72</figureCitation>
|
||
).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="19" pageNumber="20" type="materials_examined">
|
||
<paragraph blockId="19.[136,1452,230,1481]" pageId="19" pageNumber="20">
|
||
<emphasis bold="true" box="[189,286,842,868]" pageId="19" pageNumber="20">Type:—</emphasis>
|
||
<materialsCitation collectingDate="2021-10-08" collectionCode="BM" collectorName="A. Jordan" country="Zambia" elevation="768" latitude="-8.652972" location="Lake Tanganyika" longLatPrecision="1" longitude="31.192999" municipality="Isanga Bay" pageId="19" pageNumber="20" specimenCode="BM 108983" specimenCount="1" typeStatus="holotype">
|
||
<collectingCountry box="[285,586,842,868]" name="Zambia" pageId="19" pageNumber="20">REPUBLIC OF ZAMBIA</collectingCountry>
|
||
,
|
||
<location LSID="urn:lsid:plazi:treatment:038487E2FFCD2651BCF1FF0AB96175CC:8EF2602FFFCD2651BE2EFCDDBB787360" box="[599,796,842,868]" country="Zambia" latitude="-8.652972" longLatPrecision="1" longitude="31.192999" municipality="Isanga Bay" name="Lake Tanganyika" pageId="19" pageNumber="20">Lake Tanganyika</location>
|
||
,
|
||
<collectingMunicipality box="[809,936,842,868]" pageId="19" pageNumber="20">Isanga Bay</collectingMunicipality>
|
||
, at
|
||
<quantity box="[978,1050,842,868]" metricMagnitude="2" metricUnit="m" metricValue="7.68" pageId="19" pageNumber="20" unit="m" value="768.0">
|
||
<elevation box="[978,1050,842,868]" metricMagnitude="2" metricUnit="m" metricValue="7.68" pageId="19" pageNumber="20" unit="m" value="768.0">768 m</elevation>
|
||
</quantity>
|
||
elevation; rock scrape,
|
||
<quantity box="[1322,1381,842,868]" metricMagnitude="1" metricUnit="m" metricValue="2.0" pageId="19" pageNumber="20" unit="m" value="20.0">
|
||
<elevation box="[1322,1381,842,868]" metricMagnitude="1" metricUnit="m" metricValue="2.0" pageId="19" pageNumber="20" unit="m" value="20.0">20 m</elevation>
|
||
</quantity>
|
||
water depth, collected
|
||
<collectionCode box="[321,413,878,904]" pageId="19" pageNumber="20">SCUBA</collectionCode>
|
||
diving,
|
||
<geoCoordinate box="[505,653,878,904]" degrees="8" direction="south" minutes="39" orientation="latitude" pageId="19" pageNumber="20" precision="1" seconds="10.7" value="-8.652972">8°39’10.7” S</geoCoordinate>
|
||
<geoCoordinate box="[659,823,878,904]" degrees="31" direction="east" minutes="11" orientation="longitude" pageId="19" pageNumber="20" precision="1" seconds="34.8" value="31.192999">31°11’34.8” E</geoCoordinate>
|
||
,
|
||
<emphasis box="[835,1147,877,904]" italics="true" pageId="19" pageNumber="20">
|
||
<collectorName box="[835,947,878,904]" pageId="19" pageNumber="20">A. Jordan</collectorName>
|
||
,
|
||
<date box="[959,973,878,904]" pageId="19" pageNumber="20" value="2021-10-08">
|
||
<collectingDate box="[959,973,878,904]" pageId="19" pageNumber="20" value="2021-10-08">8</collectingDate>
|
||
</date>
|
||
<superScript attach="left" box="[973,986,877,891]" fontSize="6" pageId="19" pageNumber="20">th</superScript>
|
||
October 2021
|
||
</emphasis>
|
||
(
|
||
<typeStatus box="[1162,1262,878,904]" pageId="19" pageNumber="20">holotype</typeStatus>
|
||
designated here, circled specimen
|
||
<specimenCode box="[331,472,914,940]" collectionCode="BM" country="United Kingdom" name="Bristol Museum" pageId="19" pageNumber="20">BM 108983</specimenCode>
|
||
! =
|
||
<figureCitation box="[504,585,914,941]" captionStart="FIGURES 61–66" captionStartId="20.[136,243,1660,1682]" captionTargetBox="[151,1433,194,1634]" captionTargetId="figure-23@20.[150,1434,193,1636]" captionTargetPageId="20" captionText="FIGURES 61–66. Diploneis major sp. nov., LM valve views, Lake Tanganyika.All specimens are from the type material, Isanga Bay. Fig. 65. Holotype specimen. Scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.7875127" httpUri="https://zenodo.org/record/7875127/files/figure.png" pageId="19" pageNumber="20">Fig. 65</figureCitation>
|
||
,
|
||
</materialsCitation>
|
||
<materialsCitation collectingDate="2021-10-08" collectionCode="SCUBA" collectorName="A. Jordan" country="Zambia" elevation="768" latitude="-8.652972" location="Lake Tanganyika" longLatPrecision="1" longitude="31.192999" municipality="Isanga Bay" pageId="19" pageNumber="20" specimenCode="ANSP-GC17212" specimenCount="1" typeStatus="isotype">
|
||
isotypes
|
||
<specimenCode box="[694,892,914,940]" collectionCode="ANSP-GC" pageId="19" pageNumber="20">ANSP-GC17212</specimenCode>
|
||
!, CANA-129329!). Type material CANA-129329. Registration: http://phycobank.org/103714
|
||
</materialsCitation>
|
||
</paragraph>
|
||
<paragraph blockId="19.[136,1452,230,1481]" box="[189,1197,985,1012]" pageId="19" pageNumber="20">
|
||
<emphasis bold="true" box="[189,615,985,1012]" pageId="19" pageNumber="20">Pictures of the isolated specimen:—</emphasis>
|
||
LM micrograph on 1000× magnification (
|
||
<figureCitation box="[1085,1184,986,1012]" captionStart="FIGURES 2–11" captionStartId="8.[136,243,1955,1977]" captionTargetBox="[203,1382,194,1930]" captionTargetId="figure-23@8.[201,1383,193,1932]" captionTargetPageId="8" captionText="FIGURES 2–11. Diploneis salzburgeri sp. nov., LM valve views, Lake Tanganyika. 2, 3, 5, 6, 9. Specimens from southern parts of Lake Tanganyika, Kalambo Falls Lodge. 4. Specimen from Kalya Bay. 7. Specimen from Ndole Bay. 8. Specimen from Jakobsen Beach, near Kigoma. 10, 11. Specimens from Buhingu Island. Fig. 7. Holotype specimen. Scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.7875095" httpUri="https://zenodo.org/record/7875095/files/figure.png" pageId="19" pageNumber="20">Fig. S2d</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph blockId="19.[136,1452,230,1481]" box="[189,1097,1021,1048]" pageId="19" pageNumber="20">
|
||
<emphasis bold="true" box="[189,399,1021,1048]" pageId="19" pageNumber="20">Sequence data:—</emphasis>
|
||
Plastid gene
|
||
<emphasis box="[542,579,1022,1048]" italics="true" pageId="19" pageNumber="20">rbc</emphasis>
|
||
L sequence (GenBank accession:
|
||
<collectionCode box="[956,998,1022,1048]" pageId="19" pageNumber="20">OQ</collectionCode>
|
||
660283).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection box="[189,1042,1058,1084]" pageId="19" pageNumber="20" type="etymology">
|
||
<paragraph blockId="19.[136,1452,230,1481]" box="[189,1042,1058,1084]" pageId="19" pageNumber="20">
|
||
<emphasis bold="true" box="[189,356,1058,1084]" pageId="19" pageNumber="20">Etymology:—</emphasis>
|
||
The specific epithet ‘
|
||
<taxonomicName authorityName="Jovanovska & Wilson & Hamilton & Stone" authorityYear="2023" box="[593,660,1059,1084]" class="Bacillariophyceae" family="Naviculaceae" genus="Diploneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="19" pageNumber="20" phylum="Bacillariophyta" rank="species" species="major">
|
||
<emphasis box="[593,660,1059,1084]" italics="true" pageId="19" pageNumber="20">major</emphasis>
|
||
</taxonomicName>
|
||
’ is refers to the species great size.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="19" pageNumber="20" type="biology_ecology">
|
||
<paragraph blockId="19.[136,1452,230,1481]" pageId="19" pageNumber="20">
|
||
<emphasis bold="true" box="[189,523,1093,1120]" pageId="19" pageNumber="20">Ecology and distribution:—</emphasis>
|
||
This species has only been observed on the Tanzanian and Zambian coasts of Lake Tanganyika. It is a rather rare and not very frequent species in the alkaline, moderately mineral waters, occurring mainly in the southern sub-basin on sand at
|
||
<quantity box="[631,752,1166,1193]" metricMagnitude="1" metricUnit="m" metricValue="2.55" metricValueMax="3.6" metricValueMin="1.5" pageId="19" pageNumber="20" unit="m" value="25.5" valueMax="36.0" valueMin="15.0">15 to 36 m</quantity>
|
||
water depth and on sand craters formed by cichlids and rarely on mud at more than
|
||
<quantity box="[376,434,1202,1228]" metricMagnitude="1" metricUnit="m" metricValue="3.0" pageId="19" pageNumber="20" unit="m" value="30.0">30 m</quantity>
|
||
depth. We found it particularly in Isanga Bay, Chituta Bay, Mutondwe Island, and at Cape Nangu in Kasaba Bay (
|
||
<figureCitation box="[393,497,1238,1264]" captionStart="FIGURE 1" captionStartId="3.[136,229,1594,1616]" captionTargetBox="[171,1421,879,1532]" captionTargetId="figure-263@3.[151,1436,844,1567]" captionTargetPageId="3" captionText="FIGURE 1. Maps ofAfrica with major drainage systems. a) Map of Africa indicating the general location of the East African Rift (framed in bold grey lines). b) Map of East African Rift with sample (purple circles) and type (green circles) localities for all twenty-five new Diploneis species. c) Bathymetric map of the three sub-basins of Lake Tanganyika with close-up of sampling sites in the lake. d) Key sampling sites in the northern Kigoma sub-basin of Lake Tanganyika. e) Key sampling sites in the central Kundwe sub-basin of Lake Tanganyika. f) Key sampling sites in the southern Kipili sub-basin of Lake Tanganyika. Location details for each species are given in the descriptions." figureDoi="http://doi.org/10.5281/zenodo.7875093" httpUri="https://zenodo.org/record/7875093/files/figure.png" pageId="19" pageNumber="20">Fig. 1c, f</figureCitation>
|
||
). Fewer individuals were also found in the central sub-basin in Kalya Bay and Mahale National Park (
|
||
<figureCitation box="[303,409,1274,1300]" captionStart="FIGURE 1" captionStartId="3.[136,229,1594,1616]" captionTargetBox="[171,1421,879,1532]" captionTargetId="figure-263@3.[151,1436,844,1567]" captionTargetPageId="3" captionText="FIGURE 1. Maps ofAfrica with major drainage systems. a) Map of Africa indicating the general location of the East African Rift (framed in bold grey lines). b) Map of East African Rift with sample (purple circles) and type (green circles) localities for all twenty-five new Diploneis species. c) Bathymetric map of the three sub-basins of Lake Tanganyika with close-up of sampling sites in the lake. d) Key sampling sites in the northern Kigoma sub-basin of Lake Tanganyika. e) Key sampling sites in the central Kundwe sub-basin of Lake Tanganyika. f) Key sampling sites in the southern Kipili sub-basin of Lake Tanganyika. Location details for each species are given in the descriptions." figureDoi="http://doi.org/10.5281/zenodo.7875093" httpUri="https://zenodo.org/record/7875093/files/figure.png" pageId="19" pageNumber="20">Fig. 1c, e</figureCitation>
|
||
). In both sub-basins, the species is mostly found together with
|
||
<emphasis box="[1100,1280,1274,1300]" italics="true" pageId="19" pageNumber="20">
|
||
<taxonomicName authority="Jovanovska & Wilson & Hamilton & Stone, 2023" authorityName="Jovanovska & Wilson & Hamilton & Stone" authorityYear="2023" box="[1100,1191,1274,1300]" class="Bacillariophyceae" family="Naviculaceae" genus="Diploneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="19" pageNumber="20" phylum="Bacillariophyta" rank="species" species="fossa" status="sp. nov.">D. fossa</taxonomicName>
|
||
<taxonomicNameLabel box="[1196,1280,1275,1300]" pageId="19" pageNumber="20" rank="species">sp. nov.</taxonomicNameLabel>
|
||
</emphasis>
|
||
,
|
||
<emphasis italics="true" pageId="19" pageNumber="20">
|
||
<taxonomicName authority="Jovanovska & Wilson & Hamilton & Stone, 2023" authorityName="Jovanovska & Wilson & Hamilton & Stone" authorityYear="2023" box="[1292,1452,1274,1300]" class="Bacillariophyceae" family="Naviculaceae" genus="Diploneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="19" pageNumber="20" phylum="Bacillariophyta" rank="species" species="salzburgeri" status="sp. nov.">D. salzburgeri</taxonomicName>
|
||
<taxonomicNameLabel box="[136,221,1311,1336]" pageId="19" pageNumber="20" rank="species">sp. nov.</taxonomicNameLabel>
|
||
</emphasis>
|
||
,
|
||
<emphasis box="[234,438,1310,1336]" italics="true" pageId="19" pageNumber="20">
|
||
<taxonomicName authority="Jovanovska & Wilson & Hamilton & Stone, 2023" authorityName="Jovanovska & Wilson & Hamilton & Stone" authorityYear="2023" box="[234,347,1310,1336]" class="Bacillariophyceae" family="Naviculaceae" genus="Diploneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="19" pageNumber="20" phylum="Bacillariophyta" rank="species" species="tumida" status="sp. nov.">D. tumida</taxonomicName>
|
||
<taxonomicNameLabel box="[353,438,1311,1336]" pageId="19" pageNumber="20" rank="species">sp. nov.</taxonomicNameLabel>
|
||
</emphasis>
|
||
,
|
||
<emphasis box="[452,676,1311,1336]" italics="true" pageId="19" pageNumber="20">
|
||
<taxonomicName authority="Jovanovska & Wilson & Hamilton & Stone, 2023" authorityName="Jovanovska & Wilson & Hamilton & Stone" authorityYear="2023" box="[452,584,1311,1336]" class="Bacillariophyceae" family="Naviculaceae" genus="Diploneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="19" pageNumber="20" phylum="Bacillariophyta" rank="species" species="gigantea" status="sp. nov.">D. gigantea</taxonomicName>
|
||
<taxonomicNameLabel box="[591,676,1311,1336]" pageId="19" pageNumber="20" rank="species">sp. nov.</taxonomicNameLabel>
|
||
</emphasis>
|
||
, and
|
||
<emphasis box="[736,965,1310,1336]" italics="true" pageId="19" pageNumber="20">
|
||
<taxonomicName authority="Jovanovska & Wilson & Hamilton & Stone, 2023" authorityName="Jovanovska & Wilson & Hamilton & Stone" authorityYear="2023" box="[736,874,1310,1336]" class="Bacillariophyceae" family="Naviculaceae" genus="Diploneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="19" pageNumber="20" phylum="Bacillariophyta" rank="species" species="serrulata" status="sp. nov.">D. serrulata</taxonomicName>
|
||
<taxonomicNameLabel box="[880,965,1311,1336]" pageId="19" pageNumber="20" rank="species">sp. nov.</taxonomicNameLabel>
|
||
</emphasis>
|
||
</paragraph>
|
||
<paragraph blockId="19.[136,1452,230,1481]" pageId="19" pageNumber="20">
|
||
<emphasis bold="true" box="[189,558,1345,1372]" pageId="19" pageNumber="20">Main differential characters:—</emphasis>
|
||
Valve shape, external fin-like ornamentations across the valve, fin-like formations within areolae, cribra with volae-like shape, and highly recessed areolae over the longitudinal canals.
|
||
</paragraph>
|
||
<paragraph blockId="19.[136,1452,230,1481]" pageId="19" pageNumber="20">
|
||
<emphasis bold="true" box="[189,407,1417,1443]" pageId="19" pageNumber="20">Similar species:—</emphasis>
|
||
<emphasis box="[408,753,1418,1444]" italics="true" pageId="19" pageNumber="20">
|
||
<taxonomicName authority="Jovanovska & Wilson & Hamilton & Stone, 2023" authorityName="Jovanovska & Wilson & Hamilton & Stone" authorityYear="2023" box="[408,654,1418,1444]" class="Bacillariophyceae" family="Naviculaceae" genus="Diploneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="19" pageNumber="20" phylum="Bacillariophyta" rank="species" species="salzburgeri" status="sp. nov.">Diploneis salzburgeri</taxonomicName>
|
||
<taxonomicNameLabel box="[664,753,1419,1444]" pageId="19" pageNumber="20" rank="species">sp. nov.</taxonomicNameLabel>
|
||
</emphasis>
|
||
and
|
||
<taxonomicName authority="Kulikovskiy & Lange-Bertalot (2015: 89)" authorityName="Kulikovskiy & Lange-Bertalot" authorityPageNumber="89" authorityYear="2015" class="Bacillariophyceae" family="Naviculaceae" genus="Diploneis" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="19" pageNumber="20" phylum="Bacillariophyta" rank="species" species="baicaloparma">
|
||
<emphasis box="[814,1090,1418,1444]" italics="true" pageId="19" pageNumber="20">Diploneis baicaloparma</emphasis>
|
||
<bibRefCitation author="Kulikovskiy, M. S. & Lange-Bertalot, H. & Kuznetsova, I. V." pageId="19" pageNumber="20" pagination="1" refId="ref38891" refString="Kulikovskiy, M. S., Lange-Bertalot, H. & Kuznetsova, I. V. (2015) Lake Baikal: hotspot of endemic diatoms II. Iconographia Diatomologica 26: [1] - 656." type="journal article" year="2015">Kulikovskiy & Lange-Bertalot (2015: 89)</bibRefCitation>
|
||
</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |