159 lines
16 KiB
XML
159 lines
16 KiB
XML
<document ID-DOI="10.11646/phytotaxa.587.1.3" ID-GBIF-Dataset="6fb6e258-5441-4d9f-9e52-d4cbc7aca685" ID-ISSN="1179-3163" ID-Zenodo-Dep="7710676" checkinTime="1678344228828" checkinUser="plazi" docAuthor="Neplyukhina, Alisa & Chudaev, Dmitry" docDate="2023" docId="03ACBB04FFABFFE692F4FA529203D053" docLanguage="en" docName="phytotaxa.587.1.3.pdf" docOrigin="Phytotaxa 587 (1)" docSource="http://dx.doi.org/10.11646/phytotaxa.587.1.3" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.4:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="4" docTitle="Meridion humerosum Neplyukhina & Chudaev 2023, sp. nov." docType="treatment" docVersion="2" lastPageNumber="27" masterDocId="FF95C37CFFAEFFE0927CFFA49072D23B" masterDocTitle="Two new species of the diatom genus Meridion (Bacillariophyta, Tabellariaceae) from Aleutian Islands" masterLastPageNumber="30" masterPageNumber="21" pageNumber="26" updateTime="1678344938419" updateUser="ExternalLinkService" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>Two new species of the diatom genus Meridion (Bacillariophyta, Tabellariaceae) from Aleutian Islands</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Neplyukhina, Alisa</mods:namePart>
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<mods:nameIdentifier type="ORCID">0000-0001-7730-3905</mods:nameIdentifier>
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<mods:affiliation>A. N. Severtsov Institute of Ecology and Evolution of Russian Academy of Sciences, Leninsky prospect 33, Moscow, 119071, Russia Faculty of Biology, M. V. Lomonosov Moscow State University, Leninskie Gory 1, building 12, Moscow, 119234, Russia & alisa @ sev-in. ru; https: // orcid. org / 0000 - 0001 - 7730 - 3905</mods:affiliation>
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<mods:nameIdentifier type="email">alisa@sev-in.ru</mods:nameIdentifier>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Chudaev, Dmitry</mods:namePart>
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<mods:nameIdentifier type="ORCID">0000-0002-8407-6832</mods:nameIdentifier>
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<mods:affiliation>chudaev @ list. ru; https: // orcid. org / 0000 - 0002 - 8407 - 6832</mods:affiliation>
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<mods:nameIdentifier type="email">chudaev@list.ru</mods:nameIdentifier>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>Phytotaxa</mods:title>
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</mods:titleInfo>
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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>2023-03-09</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>587</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:detail>
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<mods:extent unit="page">
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<mods:start>21</mods:start>
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<mods:end>30</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.11646/phytotaxa.587.1.3</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">10.11646/phytotaxa.587.1.3</mods:identifier>
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<mods:identifier type="GBIF-Dataset">6fb6e258-5441-4d9f-9e52-d4cbc7aca685</mods:identifier>
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<mods:identifier type="ISSN">1179-3163</mods:identifier>
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<mods:identifier type="Zenodo-Dep">7710676</mods:identifier>
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</mods:mods>
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<treatment ID-DOI="http://doi.org/10.5281/zenodo.7710688" ID-Zenodo-Dep="7710688" LSID="urn:lsid:plazi:treatment:03ACBB04FFABFFE692F4FA529203D053" httpUri="http://treatment.plazi.org/id/03ACBB04FFABFFE692F4FA529203D053" lastPageId="6" lastPageNumber="27" pageId="5" pageNumber="26">
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<subSubSection box="[136,768,1526,1553]" pageId="5" pageNumber="26" type="nomenclature">
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<paragraph blockId="5.[136,768,1526,1553]" box="[136,768,1526,1553]" pageId="5" pageNumber="26">
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<heading box="[136,768,1526,1553]" fontSize="11" level="2" pageId="5" pageNumber="26" reason="3">
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<taxonomicName authority="Neplyukhina & Chudaev" authorityName="Neplyukhina & Chudaev" authorityYear="2023" box="[136,676,1526,1553]" class="Bacillariophyceae" family="Fragilariaceae" genus="Meridion" higherTaxonomySource="GBIF" kingdom="Chromista" order="Fragilariales" pageId="5" pageNumber="26" phylum="Bacillariophyta" rank="species" species="humerosum" status="sp. nov.">
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<emphasis bold="true" box="[136,388,1526,1553]" italics="true" pageId="5" pageNumber="26">Meridion humerosum</emphasis>
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Neplyukhina & Chudaev
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</taxonomicName>
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<emphasis box="[683,768,1527,1552]" italics="true" pageId="5" pageNumber="26">
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<taxonomicNameLabel box="[683,768,1527,1552]" pageId="5" pageNumber="26" rank="species">sp. nov.</taxonomicNameLabel>
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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 lastPageId="6" lastPageNumber="27" pageId="5" pageNumber="26" type="description">
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<paragraph blockId="5.[136,1452,1598,2092]" pageId="5" pageNumber="26">
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<emphasis bold="true" box="[136,312,1598,1624]" pageId="5" pageNumber="26">Description:—</emphasis>
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LM (
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<figureCitation box="[371,506,1598,1624]" captionStart="FIGURES 4–41" captionStartId="3.[136,243,1927,1949]" captionTargetBox="[151,1435,190,1891]" captionTargetId="figure-17@3.[151,1435,190,1903]" captionTargetPageId="3" captionText="FIGURES 4–41. 4–29. Meridion tenuipes sp. nov., LM, type material, slide MW-D 1099s1, Fig. 6 represents the holotype. 30–41. Meridion humerosum sp. nov., LM, type material, slide MW-D 1099s1, Fig. 32 represents the holotype. 4–20, 31–41. Valve views. 21–30. Girdle views. Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.7710680" httpUri="https://zenodo.org/record/7710680/files/figure.png" pageId="5" pageNumber="26">Figs 30–41</figureCitation>
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): Frustules in girdle view narrowly cuneate with distinctly stepped headpole (only paired cells observed, which may be results of preceding cell division, as well as colony fragments). Valves heteropolar, narrowly wedge-shaped, length 19.0–43.5 µm, width 5.4–7.1 µm (n=18). Headpole capitate to rostrate, clearly set off the rest of valve by distinct shoulders. Footpole protracted, capitate. Sternum very thin, filiform. Striae parallel, irregularly spaced due to presence of transapical ribs devoid of ornamentation. Striae density 15.9–22.0 in 10 µm. Areolae not discernible in LM. Transapical ribs from both sides of sternum mainly fused in centre, forming complex ribs, going transversely or obliquely from mantle to mantle. Ribs present through whole valve length. Rib density
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<quantity box="[136,249,1850,1877]" metricMagnitude="-1" metricUnit="m" metricValue="1.0413999999999999" metricValueMax="1.2953999999999999" metricValueMin="0.7874000000000001" pageId="5" pageNumber="26" unit="in" value="4.1" valueMax="5.1" valueMin="3.1">3.1–5.1 in</quantity>
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10 µm. One rimoportula remoted from headpole, located beneath the “neck” of capitate headpole, adjacent to sternum.
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</paragraph>
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<paragraph blockId="5.[136,1452,1598,2092]" pageId="5" pageNumber="26">
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SEM, external valve surface (
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<figureCitation box="[513,643,1922,1949]" captionStart="FIGURES 49–52" captionStartId="5.[136,243,1422,1444]" captionTargetBox="[151,1435,533,1396]" captionTargetId="figure-148@5.[151,1435,533,1397]" captionTargetPageId="5" captionText="FIGURES 49–52. Meridion humerosum sp. nov., SEM, type material. 49–51. External valve surface. 50. Headpole of the valve depicted in Fig. 49. 52. Internal valve surface and part of valvocopula. Scale bars = 5 µm (49, 51, 52), 1 µm (50)." figureDoi="http://doi.org/10.5281/zenodo.7710686" httpUri="https://zenodo.org/record/7710686/files/figure.png" pageId="5" pageNumber="26">Figs 49–51</figureCitation>
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): Valve face flat. Striae composed of circular areolae, occluded externally. Areolae density
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<quantity box="[326,428,1958,1985]" metricMagnitude="0" metricUnit="m" metricValue="1.4350999999999998" metricValueMax="1.5493999999999999" metricValueMin="1.3208000000000002" pageId="5" pageNumber="26" unit="in" value="56.5" valueMax="61.0" valueMin="52.0">52–61 in</quantity>
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10 µm. Areola occlusions in very shallow depressions. Apical pore fields, composed of smaller unoccluded pores present at headpole mantle, and probably at footpole mantle too, but the latter is not fully clear from taken micrographs. Rimoportula opening slit-like, transapically oriented, adjacent to sternum, terminates a stria, displaced proximally from headpole. Spines completely absent.
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</paragraph>
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<paragraph blockId="6.[136,1452,158,617]" pageId="6" pageNumber="27">
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SEM, internal valve surface (
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<figureCitation box="[521,606,158,185]" captionStart="FIGURES 49–52" captionStartId="5.[136,243,1422,1444]" captionTargetBox="[151,1435,533,1396]" captionTargetId="figure-148@5.[151,1435,533,1397]" captionTargetPageId="5" captionText="FIGURES 49–52. Meridion humerosum sp. nov., SEM, type material. 49–51. External valve surface. 50. Headpole of the valve depicted in Fig. 49. 52. Internal valve surface and part of valvocopula. Scale bars = 5 µm (49, 51, 52), 1 µm (50)." figureDoi="http://doi.org/10.5281/zenodo.7710686" httpUri="https://zenodo.org/record/7710686/files/figure.png" pageId="6" pageNumber="27">Fig. 52</figureCitation>
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): Striae composed of circular pinhole-like unoccluded areolae. Transapical ribs present through the whole valve length, ribs elevated above internal valve surface. Rimoportula slit transapically oriented, positioned between distinct lips.
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</paragraph>
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<paragraph blockId="6.[136,1452,158,617]" pageId="6" pageNumber="27">
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SEM, cingulum structure (
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<figureCitation box="[488,573,266,293]" captionStart="FIGURES 49–52" captionStartId="5.[136,243,1422,1444]" captionTargetBox="[151,1435,533,1396]" captionTargetId="figure-148@5.[151,1435,533,1397]" captionTargetPageId="5" captionText="FIGURES 49–52. Meridion humerosum sp. nov., SEM, type material. 49–51. External valve surface. 50. Headpole of the valve depicted in Fig. 49. 52. Internal valve surface and part of valvocopula. Scale bars = 5 µm (49, 51, 52), 1 µm (50)." figureDoi="http://doi.org/10.5281/zenodo.7710686" httpUri="https://zenodo.org/record/7710686/files/figure.png" pageId="6" pageNumber="27">Fig. 52</figureCitation>
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): Only a fragment of valvocopula was observed from internal surface. It bears one row of evenly spaced perforations together with one fragmented perforation row. No evidence of presence of septum at the headpole.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="6" pageNumber="27" type="materials_examined">
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<paragraph blockId="6.[136,1452,158,617]" pageId="6" pageNumber="27">
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<emphasis bold="true" box="[189,257,374,400]" pageId="6" pageNumber="27">Type:</emphasis>
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—
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<materialsCitation collectingDate="2018-06-06" collectionCode="LE" collectorName="A. B. Savinetsky" country="United States of America" county="Aleutian Islands" latitude="53.834248" location="Pyramid Creek Road" longLatPrecision="1" longitude="-166.55309" municipality="Unalaska Island" pageId="6" pageNumber="27" specimenCode="A0002282" specimenCount="1" stateProvince="Alaska" typeStatus="holotype">
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<collectingCountry box="[287,345,374,400]" name="United States of America" pageId="6" pageNumber="27">USA</collectingCountry>
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.
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<collectingRegion box="[357,439,374,400]" country="United States of America" name="Alaska" pageId="6" pageNumber="27">Alaska</collectingRegion>
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:
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<collectingCounty box="[451,639,374,400]" pageId="6" pageNumber="27">Aleutian Islands</collectingCounty>
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,
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<collectingMunicipality box="[653,838,374,400]" pageId="6" pageNumber="27">Unalaska Island</collectingMunicipality>
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, puddle near
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<location LSID="urn:lsid:plazi:treatment:03ACBB04FFABFFE692F4FA529203D053:8EDA5CC9FFA8FFE69199FED294AAD3AB" box="[997,1240,374,400]" country="United States of America" county="Aleutian Islands" latitude="53.834248" longLatPrecision="1" longitude="-166.55309" municipality="Unalaska Island" name="Pyramid Creek Road" pageId="6" pageNumber="27" stateProvince="Alaska">
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<location LSID="urn:lsid:plazi:treatment:03ACBB04FFABFFE692F4FA529203D053:8EDA5CC9FFA8FFE69199FED294E2D3AB" box="[997,1168,374,400]" country="United States of America" county="Aleutian Islands" latitude="53.834248" longLatPrecision="1" longitude="-166.55309" municipality="Unalaska Island" name="Pyramid Creek" pageId="6" pageNumber="27" stateProvince="Alaska">Pyramid Creek</location>
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Road
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</location>
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, bottom sediment,
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<geoCoordinate box="[136,294,410,437]" degrees="53" direction="north" minutes="50" orientation="latitude" pageId="6" pageNumber="27" precision="1" seconds="03.3" value="53.834248">53°50’03.3”N</geoCoordinate>
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<geoCoordinate box="[302,480,410,436]" degrees="166" direction="west" minutes="33" orientation="longitude" pageId="6" pageNumber="27" precision="1" seconds="11.1" value="-166.55309">166°33’11.1”W</geoCoordinate>
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,
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<emphasis box="[492,667,410,437]" italics="true" pageId="6" pageNumber="27">
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<collectorName box="[492,667,410,437]" pageId="6" pageNumber="27">A.B. Savinetsky</collectorName>
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</emphasis>
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,
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<emphasis box="[682,836,410,436]" italics="true" pageId="6" pageNumber="27">
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<date box="[682,836,410,436]" pageId="6" pageNumber="27" value="2018-06-06">
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<collectingDate box="[682,836,410,436]" pageId="6" pageNumber="27" value="2018-06-06">06 June 2018</collectingDate>
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</date>
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</emphasis>
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(
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<typeStatus box="[852,962,410,436]" pageId="6" pageNumber="27">Holotype</typeStatus>
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: MW-D! slide # 1099s1 =
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<figureCitation box="[1267,1349,410,436]" captionStart="FIGURES 4–41" captionStartId="3.[136,243,1927,1949]" captionTargetBox="[151,1435,190,1891]" captionTargetId="figure-17@3.[151,1435,190,1903]" captionTargetPageId="3" captionText="FIGURES 4–41. 4–29. Meridion tenuipes sp. nov., LM, type material, slide MW-D 1099s1, Fig. 6 represents the holotype. 30–41. Meridion humerosum sp. nov., LM, type material, slide MW-D 1099s1, Fig. 32 represents the holotype. 4–20, 31–41. Valve views. 21–30. Girdle views. Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.7710680" httpUri="https://zenodo.org/record/7710680/files/figure.png" pageId="6" pageNumber="27">Fig. 32</figureCitation>
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, isotype:
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<collectionCode box="[136,170,447,473]" country="Brazil" name="Servico de Microbiologia e Imunologia" pageId="6" pageNumber="27">LE</collectionCode>
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<specimenCode box="[176,299,446,472]" collectionCode="LE" country="Brazil" name="Servico de Microbiologia e Imunologia" pageId="6" pageNumber="27">A0002282</specimenCode>
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)
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</materialsCitation>
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.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="6" pageNumber="27" type="etymology">
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<paragraph blockId="6.[136,1452,158,617]" pageId="6" pageNumber="27">
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<emphasis bold="true" box="[189,328,482,508]" pageId="6" pageNumber="27">Etymology:</emphasis>
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—The specific epithet reflects that valves of the species always have distinct shoulders beneath the headpole (lat.
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<emphasis box="[295,391,518,544]" italics="true" pageId="6" pageNumber="27">humerus</emphasis>
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—shoulder).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="6" pageNumber="27" type="distribution">
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<paragraph blockId="6.[136,1452,158,617]" pageId="6" pageNumber="27">
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<emphasis bold="true" box="[189,520,554,580]" pageId="6" pageNumber="27">Distribution and ecology:—</emphasis>
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Species so far found only in the
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<typeStatus box="[882,930,555,581]" pageId="6" pageNumber="27">type</typeStatus>
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locality with relative abundance less than 1%. For associated taxa see
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<taxonomicName authorityName="Neplyukhina & Chudaev" authorityYear="2023" box="[400,531,591,616]" class="Bacillariophyceae" family="Fragilariaceae" genus="Meridion" higherTaxonomySource="GBIF" kingdom="Chromista" order="Fragilariales" pageId="6" pageNumber="27" phylum="Bacillariophyta" rank="species" species="tenuipes">
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<emphasis box="[400,531,591,616]" italics="true" pageId="6" pageNumber="27">M. tenuipes</emphasis>
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</taxonomicName>
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section.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |