211 lines
30 KiB
XML
211 lines
30 KiB
XML
<document id="9B00F64A92A4894F0419050F4E639721" ID-DOI="10.5281/zenodo.187761" ID-GBIF-Dataset="874b1274-0321-4a44-948f-56792c72697e" ID-ISSN="1175-5326" ID-Zenodo-Dep="187761" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1461073462905" checkinUser="plazi" docAuthor="Cedhagen, Tomas, Gooday, Andrew J. & Pawlowski, Jan" docDate="2009" docId="03F387BC4845FF82EEFA4D00389B474B" docLanguage="en" docName="zt02096p022.pdf" docOrigin="Zootaxa 2096" docStyle="DocumentStyle:890A69B780ED73D6DB8551B71C8AC79E.4:Zootaxa.2009-2012.journal_article" docStyleId="890A69B780ED73D6DB8551B71C8AC79E" docStyleName="Zootaxa.2009-2012.journal_article" docStyleVersion="4" docTitle="Leptammina grisea" docType="treatment" docVersion="7" lastPageNumber="15" masterDocId="FFCAFFC44846FF84EE6D4A3D387B4169" masterDocTitle="A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean *" masterLastPageNumber="22" masterPageNumber="9" pageNumber="12" updateTime="1698585430837" updateUser="plazi">
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<mods:titleInfo id="2ECF8BC9ECE7C999026F3166C8FBE6FA">
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<mods:title id="B58E8877194FA5003674B601A95F584A">A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean *</mods:title>
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<mods:name id="F6179E136E65ECDEA17132A477B94EC4" type="personal">
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<mods:namePart id="9C1CCF9C31874B0C8524D7BDFA50F4FA">Cedhagen, Tomas</mods:namePart>
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<mods:roleTerm id="DE3016D31E76875E3B716220076624F4">Author</mods:roleTerm>
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<mods:namePart id="E18C1FC295AF9F26BE7F6100403D402C">Gooday, Andrew J.</mods:namePart>
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<mods:name id="134FDB4B6BA1D35E84FFBB9B4526932F" type="personal">
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<mods:roleTerm id="6372C68B6A3182A6D26D5A7630D978BF">Author</mods:roleTerm>
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<mods:namePart id="AA9B220D3961689C78B54F428DAFEECB">Pawlowski, Jan</mods:namePart>
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<mods:typeOfResource id="8BAC51C9782C92ED64CB33164AF97BBA">text</mods:typeOfResource>
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<mods:title id="132B57467C879BA35F695F709539580A">Zootaxa</mods:title>
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<mods:part id="90EF103587A89728123DE2CC07C71096">
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<mods:date id="6188042FA7B503BF0A59365038FEF3EF">2009</mods:date>
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<mods:number id="80333473E8586BC17A3512AFFC14FCEE">2096</mods:number>
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<mods:identifier id="86D865C8E356DC9A87D29977F77BCED2" type="DOI">10.5281/zenodo.187761</mods:identifier>
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<treatment id="03F387BC4845FF82EEFA4D00389B474B" ID-DOI="http://doi.org/10.5281/zenodo.6217758" ID-GBIF-Taxon="119616917" ID-Zenodo-Dep="6217758" LSID="urn:lsid:plazi:treatment:03F387BC4845FF82EEFA4D00389B474B" httpUri="http://treatment.plazi.org/id/03F387BC4845FF82EEFA4D00389B474B" lastPageId="6" lastPageNumber="15" pageId="3" pageNumber="12">
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<subSubSection id="C34065214845FF87EEFA4D00396B4613" pageId="3" pageNumber="12" type="nomenclature">
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<paragraph id="8BE536AA4845FF87EEFA4D003A45463E" blockId="3.[151,574,1853,1914]" box="[151,574,1853,1879]" pageId="3" pageNumber="12">
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<heading id="D0AD81C64845FF87EEFA4D003A45463E" bold="true" box="[151,574,1853,1879]" fontSize="11" level="1" pageId="3" pageNumber="12" reason="1">
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<emphasis id="B92EEAB84845FF87EEFA4D003A45463E" bold="true" box="[151,574,1853,1879]" pageId="3" pageNumber="12">
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<taxonomicName id="4C5A4D294845FF87EEFA4D0039FB463E" ID-CoL="3THKY" box="[151,384,1853,1879]" class="Monothalamea" family="Saccamminidae" genus="Leptammina" kingdom="Chromista" order="Astrorhizida" pageId="3" pageNumber="12" phylum="Foraminifera" rank="species" species="grisea">
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<emphasis id="B92EEAB84845FF87EEFA4D0039FB463E" bold="true" box="[151,384,1853,1879]" italics="true" pageId="3" pageNumber="12">Leptammina grisea</emphasis>
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</taxonomicName>
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gen. et sp. nov.
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</emphasis>
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</heading>
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</paragraph>
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<paragraph id="8BE536AA4845FF87EEFA4D5D396B4613" blockId="3.[151,574,1853,1914]" box="[151,272,1888,1914]" pageId="3" pageNumber="12">
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(
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<figureCitation id="13612A2F4845FF87EEF24D5D397C4613" box="[159,263,1888,1914]" captionStart-0="FIGURE 1" captionStart-1="FIGURE 2" captionStartId-0="4.[151,244,1922,1943]" captionStartId-1="5.[151,244,1863,1884]" captionTargetBox-0="[175,1407,154,1874]" captionTargetBox-1="[175,1408,151,1848]" captionTargetId-0="figure@4.[165,1422,141,1887]" captionTargetId-1="figure@5.[168,1420,141,1854]" captionTargetPageId-0="4" captionTargetPageId-1="5" captionText-0="FIGURE 1. Leptammina grisea gen. et sp. nov., A – C are fresh, newly collected individuals and D are individuals fixed in formalin. E. Test wall wrinkles, probably artefacts during handling or fixation. F. Longitudinal section of entire individual with agglutinated test, inner organic lining, peduncular sheath, cytoplasm, foreign particles, and vacuoles. All individuals from Stn. 102 # 11 AT. Scale bars: A – D = 1 mm; E – F = 100 µm." captionText-1="FIGURE 2. Leptammina grisea gen. et sp. nov., A + B. SEM photograph of agglutinated outer test wall. C. Aperture with peduncular sheath (stomostyle) projected by the cytoplasm along its longitudinal axis; the transition of the peduncular sheath into the inner organic lining is clearly visible at both sides. D. SEM photograph of a broken part of the cell showing pseudopodia (reticulopodia) embedding stercomata, mineral particles, and diatom frustules. E. Nucleus of the granular type with numerous nucleoli, most of the nuclear interior consists of a vacuole. F. Agglutinated lager, inner organic lining, cell content and vacuole. All individuals from Stn. 102 # 11 AT. Scale bars: A + F = 20 µm; B = 2 µm; C + E = 100 µm; D = 5 µm." httpUri-0="https://zenodo.org/record/187762/files/figure.png" httpUri-1="https://zenodo.org/record/187763/files/figure.png" pageId="3" pageNumber="12">Figs 1–2</figureCitation>
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)
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</paragraph>
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</subSubSection>
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<subSubSection id="C34065214845FF82EEFA4D9039D641B1" lastPageId="6" lastPageNumber="15" pageId="3" pageNumber="12" type="materials_examined">
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<paragraph id="8BE536AA4845FF87EEFA4D903D164687" blockId="3.[151,1436,1965,2030]" pageId="3" pageNumber="12">
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<emphasis id="B92EEAB84845FF87EEFA4D9039EE46AF" box="[151,405,1965,1990]" italics="true" pageId="3" pageNumber="12">Material: Polarstern</emphasis>
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Station 102#11 (Agassiz trawl)
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<specimenCount id="9D5CFD234845FF87ED4C4D903BB246AE" box="[801,969,1965,1991]" pageId="3" pageNumber="12" type="generic">25 specimens</specimenCount>
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; Station 102#13 (Epibenthic sledge)
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<specimenCount id="9D5CFD234845FF87EBE04D90396E4687" pageId="3" pageNumber="12" type="generic">2 specimens</specimenCount>
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; Station 110#8 (Epibenthic sledge)
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<specimenCount id="9D5CFD234845FF87ECD84DE93B464687" box="[693,829,2004,2030]" pageId="3" pageNumber="12" type="generic">1 specimen</specimenCount>
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; Station 133#2 (Epibenthic sledge)
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<specimenCount id="9D5CFD234845FF87EA8D4DE93D124687" box="[1248,1385,2004,2030]" pageId="3" pageNumber="12" type="generic">1 specimen</specimenCount>
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.
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</paragraph>
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<caption id="DF2566224842FF80EEFA4DBF39CD4699" httpUri="https://zenodo.org/record/187762/files/figure.png" pageId="4" pageNumber="13" targetBox="[175,1407,154,1874]" targetPageId="4">
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<paragraph id="8BE536AA4842FF80EEFA4DBF39CD4699" blockId="4.[151,1437,1922,2032]" pageId="4" pageNumber="13">
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<emphasis id="B92EEAB84842FF80EEFA4DBF397046FE" bold="true" box="[151,267,1922,1943]" pageId="4" pageNumber="13">FIGURE 1.</emphasis>
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<taxonomicName id="4C5A4D294842FF80EF7C4DBE39B146F1" box="[273,458,1923,1944]" class="Monothalamea" family="Saccamminidae" genus="Leptammina" kingdom="Chromista" order="Astrorhizida" pageId="4" pageNumber="13" phylum="Foraminifera" rank="species" species="grisea">
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<emphasis id="B92EEAB84842FF80EF7C4DBE39B146F1" box="[273,458,1923,1944]" italics="true" pageId="4" pageNumber="13">Leptammina grisea</emphasis>
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</taxonomicName>
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gen. et sp. nov., A–C are fresh, newly collected individuals and D are individuals fixed in formalin. E. Test wall wrinkles, probably artefacts during handling or fixation. F. Longitudinal section of entire individual with agglutinated test, inner organic lining, peduncular sheath, cytoplasm, foreign particles, and vacuoles. All individuals from Stn. 102#11 AT. Scale bars: A–D = 1 mm; E–F = 100 µm.
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</paragraph>
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</caption>
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<caption id="DF2566224843FF81EEFA4D7A3B3F4698" httpUri="https://zenodo.org/record/187763/files/figure.png" pageId="5" pageNumber="14" targetBox="[175,1408,151,1848]" targetPageId="5">
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<paragraph id="8BE536AA4843FF81EEFA4D7A3B3F4698" blockId="5.[151,1437,1863,2033]" pageId="5" pageNumber="14">
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<emphasis id="B92EEAB84843FF81EEFA4D7A39774635" bold="true" box="[151,268,1863,1884]" pageId="5" pageNumber="14">FIGURE 2.</emphasis>
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<taxonomicName id="4C5A4D294843FF81EF7F4D7539B04634" box="[274,459,1864,1885]" class="Monothalamea" family="Saccamminidae" genus="Leptammina" kingdom="Chromista" order="Astrorhizida" pageId="5" pageNumber="14" phylum="Foraminifera" rank="species" species="grisea">
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<emphasis id="B92EEAB84843FF81EF7F4D7539B04634" box="[274,459,1864,1885]" italics="true" pageId="5" pageNumber="14">Leptammina grisea</emphasis>
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</taxonomicName>
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gen. et sp. nov., A + B. SEM photograph of agglutinated outer test wall. C. Aperture with peduncular sheath (stomostyle) projected by the cytoplasm along its longitudinal axis; the transition of the peduncular sheath into the inner organic lining is clearly visible at both sides. D. SEM photograph of a broken part of the cell showing pseudopodia (reticulopodia) embedding stercomata, mineral particles, and diatom frustules. E. Nucleus of the granular type with numerous nucleoli, most of the nuclear interior consists of a vacuole. F. Agglutinated lager, inner organic lining, cell content and vacuole. All individuals from Stn. 102#11 AT. Scale bars: A+F=20 µm; B=2 µm; C+E=100 µm; D=5 µm.
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</paragraph>
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</caption>
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<paragraph id="8BE536AA4840FF82EEAB4AA539D641B1" blockId="6.[151,1437,152,1570]" pageId="6" pageNumber="15">
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<emphasis id="B92EEAB84840FF82EEAB4AA539CF41D8" box="[198,436,152,177]" italics="true" pageId="6" pageNumber="15">Derivation of name:</emphasis>
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<taxonomicName id="4C5A4D294840FF82EFD64AA53A7A41DB" box="[443,513,152,178]" class="Monothalamea" family="Saccamminidae" genus="Leptammina" kingdom="Chromista" order="Astrorhizida" pageId="6" pageNumber="15" phylum="Foraminifera" rank="species" species="grisea">grisea</taxonomicName>
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is the Medieval Latinization of the French word gris, and means grey. It refers to the colour of the test.
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</paragraph>
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</subSubSection>
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<subSubSection id="C34065214840FF82EEAB4AD8396C401A" pageId="6" pageNumber="15" type="diagnosis">
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<paragraph id="8BE536AA4840FF82EEAB4AD8396C401A" blockId="6.[151,1437,152,1570]" pageId="6" pageNumber="15">
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<emphasis id="B92EEAB84840FF82EEAB4AD839464197" box="[198,317,229,254]" italics="true" pageId="6" pageNumber="15">Diagnosis</emphasis>
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. Approximately spherical species of
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<taxonomicName id="4C5A4D294840FF82EC984AD83BF74196" box="[757,908,229,255]" class="Monothalamea" family="Saccamminidae" genus="Leptammina" kingdom="Chromista" order="Astrorhizida" pageId="6" pageNumber="15" phylum="Foraminifera" rank="genus">Leptammina</taxonomicName>
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, up to
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<quantity id="4CA29B4F4840FF82EDB04AD83C594196" box="[989,1058,229,255]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="6" pageNumber="15" unit="mm" value="2.0">2 mm</quantity>
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diameter, characterized by soft, delicate, finely agglutinated test, grayish or violet-grey in colour and opaque, with dull, non-reflective surface. Single, prominent circular aperture. Cell body dark greenish, with single nucleus. Peduncular sheath well developed.
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</paragraph>
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</subSubSection>
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<subSubSection id="C34065214840FF82EEAB4BBD3AE2408E" pageId="6" pageNumber="15" type="materials_examined">
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<paragraph id="8BE536AA4840FF82EEAB4BBD3AE2408E" blockId="6.[151,1437,152,1570]" pageId="6" pageNumber="15">
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<emphasis id="B92EEAB84840FF82EEAB4BBD3A6E40F0" box="[198,533,384,409]" italics="true" pageId="6" pageNumber="15">
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Deposition of
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<typeStatus id="54E188084840FF82EF1B4BBD39DC40F0" box="[374,423,384,409]" pageId="6" pageNumber="15">type</typeStatus>
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material
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</emphasis>
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: The
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<typeStatus id="54E188084840FF82EC094BBD3AB140F3" box="[612,714,384,410]" pageId="6" pageNumber="15" type="holotype">holotype</typeStatus>
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from Station 102#11 and
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<typeStatus id="54E188084840FF82EA7E4BBD3CF840F3" box="[1043,1155,384,410]" pageId="6" pageNumber="15" type="paratype">paratypes</typeStatus>
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from Stations 102#11, 102#13, 110#8, and 133#2 are deposited in the Forschungsinstitut Senckenberg, Frankfurt am Main,
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<collectingCountry id="F34D763A4840FF82EEFA4BF0397E408E" box="[151,261,461,487]" name="Germany" pageId="6" pageNumber="15">Germany</collectingCountry>
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, under reg. no.
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<collectionCode id="ED4BAE6F4840FF82EFD74BF0398E408E" LSID="urn:lsid:biocol.org:col:34838" box="[442,501,461,487]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34838" name="Forschungsinstitut und Natur-Museum Senckenberg" pageId="6" pageNumber="15">SMF</collectionCode>
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<collectionCode id="ED4BAE6F4840FF82EF914BF03A34408E" box="[508,591,461,487]" pageId="6" pageNumber="15">XXVII</collectionCode>
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7537.
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</paragraph>
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</subSubSection>
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||
<subSubSection id="C34065214840FF82EEAB4BC93DF34585" pageId="6" pageNumber="15" type="description">
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<paragraph id="8BE536AA4840FF82EEAB4BC93C2743EB" blockId="6.[151,1437,152,1570]" pageId="6" pageNumber="15">
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<emphasis id="B92EEAB84840FF82EEAB4BC9392A4364" box="[198,337,500,525]" italics="true" pageId="6" pageNumber="15">Description</emphasis>
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. General morphology. The test is free and a distinctive grey or violet-grey colour. Unfixed specimens are roughly spherical, occasionally more elongate, and often somewhat irregular in shape (
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<figureCitation id="13612A2F4840FF82EB0A482738DA4332" captionStart="FIGURE 1" captionStartId="4.[151,244,1922,1943]" captionTargetBox="[175,1407,154,1874]" captionTargetId="figure@4.[165,1422,141,1887]" captionTargetPageId="4" captionText="FIGURE 1. Leptammina grisea gen. et sp. nov., A – C are fresh, newly collected individuals and D are individuals fixed in formalin. E. Test wall wrinkles, probably artefacts during handling or fixation. F. Longitudinal section of entire individual with agglutinated test, inner organic lining, peduncular sheath, cytoplasm, foreign particles, and vacuoles. All individuals from Stn. 102 # 11 AT. Scale bars: A – D = 1 mm; E – F = 100 µm." httpUri="https://zenodo.org/record/187762/files/figure.png" pageId="6" pageNumber="15">Figs 1</figureCitation>
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A–D). The diameter ranges from 620 to 1360 µm (mean
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<quantity id="4CA29B4F4840FF82ED0D487C3BAB4332" box="[864,976,577,603]" metricMagnitude="-4" metricUnit="m" metricValue="9.1" pageId="6" pageNumber="15" unit="mm" value="0.91">0.91 mm</quantity>
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; median
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<quantity id="4CA29B4F4840FF82EA52487C3CCB4332" box="[1087,1200,577,603]" metricMagnitude="-4" metricUnit="m" metricValue="9.1" pageId="6" pageNumber="15" unit="mm" value="0.91">0.91 mm</quantity>
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; n=24 individuals). There is one round aperture on a short neck and surrounded by a thin raised collar.
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</paragraph>
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||
<paragraph id="8BE536AA4840FF82EEAB48B239254200" blockId="6.[151,1437,152,1570]" pageId="6" pageNumber="15">
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||
<emphasis id="B92EEAB84840FF82EEAB48B2394843C1" box="[198,307,655,680]" italics="true" pageId="6" pageNumber="15">Test wall.</emphasis>
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||
The wall is soft, delicate and easily detached. The surface has a dull, non-reflective appearance. It is smooth when viewed under the light microscope but slightly rough when viewed at higher magnifications (1,000X–5,000X) in the SEM. The wall includes a thin, outer agglutinated layer, up to 30 µm thick, and an inner organic lining, ~3 µm thick (
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<figureCitation id="13612A2F4840FF82EC51493F3AFF4275" box="[572,644,770,796]" captionStart="FIGURE 1" captionStartId="4.[151,244,1922,1943]" captionTargetBox="[175,1407,154,1874]" captionTargetId="figure@4.[165,1422,141,1887]" captionTargetPageId="4" captionText="FIGURE 1. Leptammina grisea gen. et sp. nov., A – C are fresh, newly collected individuals and D are individuals fixed in formalin. E. Test wall wrinkles, probably artefacts during handling or fixation. F. Longitudinal section of entire individual with agglutinated test, inner organic lining, peduncular sheath, cytoplasm, foreign particles, and vacuoles. All individuals from Stn. 102 # 11 AT. Scale bars: A – D = 1 mm; E – F = 100 µm." httpUri="https://zenodo.org/record/187762/files/figure.png" pageId="6" pageNumber="15">Figs 1</figureCitation>
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E–F; 2F). The outer layer is composed of small mineral particles varying in size from ~10 µm maximum dimension to 1 µm or less (
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<figureCitation id="13612A2F4840FF82EDD149143C73422A" box="[956,1032,809,835]" captionStart="FIGURE 2" captionStartId="5.[151,244,1863,1884]" captionTargetBox="[175,1408,151,1848]" captionTargetId="figure@5.[168,1420,141,1854]" captionTargetPageId="5" captionText="FIGURE 2. Leptammina grisea gen. et sp. nov., A + B. SEM photograph of agglutinated outer test wall. C. Aperture with peduncular sheath (stomostyle) projected by the cytoplasm along its longitudinal axis; the transition of the peduncular sheath into the inner organic lining is clearly visible at both sides. D. SEM photograph of a broken part of the cell showing pseudopodia (reticulopodia) embedding stercomata, mineral particles, and diatom frustules. E. Nucleus of the granular type with numerous nucleoli, most of the nuclear interior consists of a vacuole. F. Agglutinated lager, inner organic lining, cell content and vacuole. All individuals from Stn. 102 # 11 AT. Scale bars: A + F = 20 µm; B = 2 µm; C + E = 100 µm; D = 5 µm." httpUri="https://zenodo.org/record/187763/files/figure.png" pageId="6" pageNumber="15">Figs 2</figureCitation>
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A–B). Many of these particles are angular in shape.
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</paragraph>
|
||
<paragraph id="8BE536AA4840FF82EEAB494A3DF34585" blockId="6.[151,1437,152,1570]" pageId="6" pageNumber="15">
|
||
<emphasis id="B92EEAB84840FF82EEAB494A394142F9" box="[198,314,887,912]" italics="true" pageId="6" pageNumber="15">Cell body</emphasis>
|
||
. In fresh, newly collected individuals, the cell body is a dark green or brownish green and entirely fills the test (
|
||
<figureCitation id="13612A2F4840FF82EFFE49A039AE42DE" box="[403,469,925,951]" captionStart="FIGURE 1" captionStartId="4.[151,244,1922,1943]" captionTargetBox="[175,1407,154,1874]" captionTargetId="figure@4.[165,1422,141,1887]" captionTargetPageId="4" captionText="FIGURE 1. Leptammina grisea gen. et sp. nov., A – C are fresh, newly collected individuals and D are individuals fixed in formalin. E. Test wall wrinkles, probably artefacts during handling or fixation. F. Longitudinal section of entire individual with agglutinated test, inner organic lining, peduncular sheath, cytoplasm, foreign particles, and vacuoles. All individuals from Stn. 102 # 11 AT. Scale bars: A – D = 1 mm; E – F = 100 µm." httpUri="https://zenodo.org/record/187762/files/figure.png" pageId="6" pageNumber="15">Fig. 1</figureCitation>
|
||
E–F). A distinct peduncular sheath (stomostyle) is located immediately inside the aperture and may extend into the apertural neck and cover the rim of the aperture (
|
||
<figureCitation id="13612A2F4840FF82EADE49F93D7B42B7" box="[1203,1280,964,990]" captionStart="FIGURE 2" captionStartId="5.[151,244,1863,1884]" captionTargetBox="[175,1408,151,1848]" captionTargetId="figure@5.[168,1420,141,1854]" captionTargetPageId="5" captionText="FIGURE 2. Leptammina grisea gen. et sp. nov., A + B. SEM photograph of agglutinated outer test wall. C. Aperture with peduncular sheath (stomostyle) projected by the cytoplasm along its longitudinal axis; the transition of the peduncular sheath into the inner organic lining is clearly visible at both sides. D. SEM photograph of a broken part of the cell showing pseudopodia (reticulopodia) embedding stercomata, mineral particles, and diatom frustules. E. Nucleus of the granular type with numerous nucleoli, most of the nuclear interior consists of a vacuole. F. Agglutinated lager, inner organic lining, cell content and vacuole. All individuals from Stn. 102 # 11 AT. Scale bars: A + F = 20 µm; B = 2 µm; C + E = 100 µm; D = 5 µm." httpUri="https://zenodo.org/record/187763/files/figure.png" pageId="6" pageNumber="15">Fig. 2</figureCitation>
|
||
C). It is also continuous with the inner organic lining of the test wall. Light microscopic sections reveal one large nucleus, up to 240 µm diameter, of the granular
|
||
<typeStatus id="54E188084840FF82EC1C4E2C3ADF4542" box="[625,676,1041,1067]" pageId="6" pageNumber="15">type</typeStatus>
|
||
with numerous nucleoli, located within an exonuclear vacuole. The center of the nucleus is occupied by a vacuole, up to 200 µm wide (
|
||
<figureCitation id="13612A2F4840FF82EA674E053C28453B" box="[1034,1107,1080,1106]" captionStart="FIGURE 2" captionStartId="5.[151,244,1863,1884]" captionTargetBox="[175,1408,151,1848]" captionTargetId="figure@5.[168,1420,141,1854]" captionTargetPageId="5" captionText="FIGURE 2. Leptammina grisea gen. et sp. nov., A + B. SEM photograph of agglutinated outer test wall. C. Aperture with peduncular sheath (stomostyle) projected by the cytoplasm along its longitudinal axis; the transition of the peduncular sheath into the inner organic lining is clearly visible at both sides. D. SEM photograph of a broken part of the cell showing pseudopodia (reticulopodia) embedding stercomata, mineral particles, and diatom frustules. E. Nucleus of the granular type with numerous nucleoli, most of the nuclear interior consists of a vacuole. F. Agglutinated lager, inner organic lining, cell content and vacuole. All individuals from Stn. 102 # 11 AT. Scale bars: A + F = 20 µm; B = 2 µm; C + E = 100 µm; D = 5 µm." httpUri="https://zenodo.org/record/187763/files/figure.png" pageId="6" pageNumber="15">Fig. 2</figureCitation>
|
||
F). Large vacuoles are also visible within the cytoplasm of sectioned individuals. Pseudopodia were not observed, although a thin string of cytoplasm projects along the central axis of the peduncular sheath (
|
||
<figureCitation id="13612A2F4840FF82ED814EB83C4C45F6" box="[1004,1079,1157,1183]" captionStart="FIGURE 2" captionStartId="5.[151,244,1863,1884]" captionTargetBox="[175,1408,151,1848]" captionTargetId="figure@5.[168,1420,141,1854]" captionTargetPageId="5" captionText="FIGURE 2. Leptammina grisea gen. et sp. nov., A + B. SEM photograph of agglutinated outer test wall. C. Aperture with peduncular sheath (stomostyle) projected by the cytoplasm along its longitudinal axis; the transition of the peduncular sheath into the inner organic lining is clearly visible at both sides. D. SEM photograph of a broken part of the cell showing pseudopodia (reticulopodia) embedding stercomata, mineral particles, and diatom frustules. E. Nucleus of the granular type with numerous nucleoli, most of the nuclear interior consists of a vacuole. F. Agglutinated lager, inner organic lining, cell content and vacuole. All individuals from Stn. 102 # 11 AT. Scale bars: A + F = 20 µm; B = 2 µm; C + E = 100 µm; D = 5 µm." httpUri="https://zenodo.org/record/187763/files/figure.png" pageId="6" pageNumber="15">Fig. 2</figureCitation>
|
||
C). However, in critical-point dried individuals studied by SEM, the cell body consists of a dense network of fine pseudopodia (reticulopodia) that incorporate stercomata, mineral particles, diatoms, and other foreign particles (
|
||
<figureCitation id="13612A2F4840FF82EB714EEF3D184585" box="[1308,1379,1234,1260]" captionStart="FIGURE 2" captionStartId="5.[151,244,1863,1884]" captionTargetBox="[175,1408,151,1848]" captionTargetId="figure@5.[168,1420,141,1854]" captionTargetPageId="5" captionText="FIGURE 2. Leptammina grisea gen. et sp. nov., A + B. SEM photograph of agglutinated outer test wall. C. Aperture with peduncular sheath (stomostyle) projected by the cytoplasm along its longitudinal axis; the transition of the peduncular sheath into the inner organic lining is clearly visible at both sides. D. SEM photograph of a broken part of the cell showing pseudopodia (reticulopodia) embedding stercomata, mineral particles, and diatom frustules. E. Nucleus of the granular type with numerous nucleoli, most of the nuclear interior consists of a vacuole. F. Agglutinated lager, inner organic lining, cell content and vacuole. All individuals from Stn. 102 # 11 AT. Scale bars: A + F = 20 µm; B = 2 µm; C + E = 100 µm; D = 5 µm." httpUri="https://zenodo.org/record/187763/files/figure.png" pageId="6" pageNumber="15">Fig. 2</figureCitation>
|
||
D).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C34065214840FF82EEAB4EC43D6244BD" pageId="6" pageNumber="15" type="discussion">
|
||
<paragraph id="8BE536AA4840FF82EEAB4EC43D6244BD" blockId="6.[151,1437,152,1570]" pageId="6" pageNumber="15">
|
||
<emphasis id="B92EEAB84840FF82EEAB4EC43956447B" box="[198,301,1273,1298]" italics="true" pageId="6" pageNumber="15">Remarks</emphasis>
|
||
:
|
||
<taxonomicName id="4C5A4D294840FF82EF514EC43A64447B" box="[316,543,1273,1298]" class="Monothalamea" family="Saccamminidae" genus="Leptammina" kingdom="Chromista" order="Astrorhizida" pageId="6" pageNumber="15" phylum="Foraminifera" rank="species" species="grisea">
|
||
<emphasis id="B92EEAB84840FF82EF514EC43A64447B" box="[316,543,1273,1298]" italics="true" pageId="6" pageNumber="15">Leptammina grisea</emphasis>
|
||
</taxonomicName>
|
||
gen. et sp. nov. closely resembles
|
||
<taxonomicName id="4C5A4D294840FF82EDDE4EC43CFF447B" box="[947,1156,1273,1298]" class="Monothalamea" family="Saccamminidae" genus="Saccammina" kingdom="Chromista" order="Astrorhizida" pageId="6" pageNumber="15" phylum="Foraminifera" rank="species" species="alba">
|
||
<emphasis id="B92EEAB84840FF82EDDE4EC43CFF447B" box="[947,1156,1273,1298]" italics="true" pageId="6" pageNumber="15">Saccammina alba</emphasis>
|
||
</taxonomicName>
|
||
in the general form and construction of the test. The main differences are that the test is larger (620 to 1360 µm compared to a maximum size of 400 µm in
|
||
<taxonomicName id="4C5A4D294840FF82EF9E4F7A3A3E4409" box="[499,581,1351,1376]" class="Monothalamea" family="Saccamminidae" genus="Saccammina" kingdom="Chromista" order="Astrorhizida" pageId="6" pageNumber="15" phylum="Foraminifera" rank="species" species="alba">
|
||
<emphasis id="B92EEAB84840FF82EF9E4F7A3A3E4409" box="[499,581,1351,1376]" italics="true" pageId="6" pageNumber="15">S. alba</emphasis>
|
||
</taxonomicName>
|
||
), the test wall is thicker, and the surface is greyish rather than white. It should also be noted that
|
||
<taxonomicName id="4C5A4D294840FF82EFA44F503A6744EF" box="[457,540,1389,1414]" class="Monothalamea" family="Saccamminidae" genus="Saccammina" kingdom="Chromista" order="Astrorhizida" pageId="6" pageNumber="15" phylum="Foraminifera" rank="species" species="alba">
|
||
<emphasis id="B92EEAB84840FF82EFA44F503A6744EF" box="[457,540,1389,1414]" italics="true" pageId="6" pageNumber="15">S. alba</emphasis>
|
||
</taxonomicName>
|
||
was described from an intertidal setting whereas the new species occurs at bathyal and abyssal depths.
|
||
<taxonomicName id="4C5A4D294840FF82EFB34FA93ABA44C4" box="[478,705,1428,1453]" class="Monothalamea" family="Saccamminidae" genus="Leptammina" kingdom="Chromista" order="Astrorhizida" pageId="6" pageNumber="15" phylum="Foraminifera" rank="species" species="grisea">
|
||
<emphasis id="B92EEAB84840FF82EFB34FA93ABA44C4" box="[478,705,1428,1453]" italics="true" pageId="6" pageNumber="15">Leptammina grisea</emphasis>
|
||
</taxonomicName>
|
||
gen. et sp. nov. differs from
|
||
<taxonomicName id="4C5A4D294840FF82EA7C4FA93CA544C4" box="[1041,1246,1428,1453]" class="Monothalamea" family="Saccamminidae" genus="Pilulina" kingdom="Chromista" order="Astrorhizida" pageId="6" pageNumber="15" phylum="Foraminifera" rank="species" species="argentea">
|
||
<emphasis id="B92EEAB84840FF82EA7C4FA93CA544C4" box="[1041,1246,1428,1453]" italics="true" pageId="6" pageNumber="15">Pilulina argentea</emphasis>
|
||
</taxonomicName>
|
||
in having a dull grey rather than reflective, silvery surface. See also “Remarks” under
|
||
<taxonomicName id="4C5A4D294840FF82EDA64F863C1944BD" box="[971,1122,1467,1492]" class="Monothalamea" family="Saccamminidae" genus="Leptammina" kingdom="Chromista" order="Astrorhizida" pageId="6" pageNumber="15" phylum="Foraminifera" rank="species" species="flavofusca">
|
||
<emphasis id="B92EEAB84840FF82EDA64F863C1944BD" box="[971,1122,1467,1492]" italics="true" pageId="6" pageNumber="15">L. flavofusca</emphasis>
|
||
</taxonomicName>
|
||
gen. et sp. nov.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C34065214840FF82EEAB4FDC389B474B" pageId="6" pageNumber="15" type="distribution">
|
||
<paragraph id="8BE536AA4840FF82EEAB4FDC389B474B" blockId="6.[151,1437,152,1570]" pageId="6" pageNumber="15">
|
||
<emphasis id="B92EEAB84840FF82EEAB4FDC391B4493" box="[198,352,1505,1530]" italics="true" pageId="6" pageNumber="15">Distribution:</emphasis>
|
||
Weddell Sea, central part at 4795, 4822, and
|
||
<quantity id="4CA29B4F4840FF82EDE34FDC3B924492" box="[910,1001,1505,1531]" metricMagnitude="3" metricUnit="m" metricValue="4.698" pageId="6" pageNumber="15" unit="m" value="4698.0">4698 m</quantity>
|
||
depth, northwestern part at
|
||
<quantity id="4CA29B4F4840FF82EB2D4FDC3DE74492" box="[1344,1436,1505,1531]" metricMagnitude="3" metricUnit="m" metricValue="1.58" pageId="6" pageNumber="15" unit="m" value="1580.0">1580 m</quantity>
|
||
depth.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |