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165 lines
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<document id="9EE2038BF360A17731DC2BF74ACA0F65" ID-DOI="10.5852/ejt.2024.929.2479" ID-ISSN="2118-9773" ID-Zenodo-Dep="10876286" ID-ZooBank="832192E7-A85A-4971-BA2F-D7420D299E8D" IM.bibliography_approvedBy="guilherme" IM.illustrations_approvedBy="guilherme" IM.materialsCitations_approvedBy="guilherme" IM.metadata_approvedBy="felipe" IM.tables_approvedBy="guilherme" IM.taxonomicNames_approvedBy="guilherme" IM.treatmentCitations_approvedBy="guilherme" IM.treatments_approvedBy="guilherme" checkinTime="1711447741012" checkinUser="plazi" docAuthor="Olesen, Jørgen & Grygier, Mark J." docDate="2024" docId="6515E6230A241E1139A36647FD969654" docLanguage="en" docName="EJT.2024.929.1-90.pdf" docOrigin="European Journal of Taxonomy 929 (1)" docSource="https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2479/11077" docStyle="DocumentStyle:EF2B578F1D15862ADE45B0C07C620911.14:EJT.2018-.journal_article.type1" docStyleId="EF2B578F1D15862ADE45B0C07C620911" docStyleName="EJT.2018-.journal_article.type1" docStyleVersion="14" docTitle="Hansenocaris Type B" docType="treatment" docVersion="2" lastPageNumber="21" masterDocId="992C9E5B0A371E053B09674EFFA99256" masterDocTitle="Taxonomic diversity of marine planktonic ‘ y-larvae’ (Crustacea: Facetotecta) from a coral reef hotspot locality (Japan, Okinawa), with a key to y-nauplii" masterLastPageNumber="90" masterPageNumber="1" pageNumber="20" updateTime="1711636408381" updateUser="guilherme" zenodo-license-document="CC-BY-4.0" zenodo-license-figures="CC-BY-4.0" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="7E346B3D0D54E26919A74D40F6870479">Taxonomic diversity of marine planktonic ‘ y-larvae’ (Crustacea: Facetotecta) from a coral reef hotspot locality (Japan, Okinawa), with a key to y-nauplii</mods:title>
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<mods:roleTerm id="72E55EB60847F11C158A9532F5DD1D62">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="8868E6B93CB017262FB4F384FEBD56EC">Olesen, Jørgen</mods:namePart>
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<mods:affiliation id="3744D1E3376A577ADC42CB7B837F934A">Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, DK- 2100 Copenhagen Ø, Denmark.</mods:affiliation>
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<mods:nameIdentifier id="CE1523C8BECE60C62D225DB06CC91749" type="email">jolesen@snm.ku.dk&jolesen@snm.ku.dk&thecostracans@gmail.com</mods:nameIdentifier>
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<mods:namePart id="4A8C3968A3457124788B6D3D79BF0C38">Grygier, Mark J.</mods:namePart>
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<mods:affiliation id="1164D204D2935159186C0A503637481E">National Museum of Marine Biology & Aquarium, 2, Houwan Rd., Checheng, Pingtung 944401, Taiwan.</mods:affiliation>
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<mods:nameIdentifier id="3BA21556FDDB02D240A235E6EA466DED" type="email">thecostracans@gmail.com&jolesen@snm.ku.dk&thecostracans@gmail.com</mods:nameIdentifier>
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<mods:title id="694F96272A0C9B433E981EC485E73C22">European Journal of Taxonomy</mods:title>
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<mods:date id="8BFC761B8ECBE3108FE50684E924F2CB">2024</mods:date>
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<mods:number id="7D3228E3659F9264182FB18D479D34E5">2024-03-25</mods:number>
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<mods:identifier id="38FB47783B963B7262ADBAC8E6EE4869" type="DOI">10.5852/ejt.2024.929.2479</mods:identifier>
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<treatment id="6515E6230A241E1139A36647FD969654" LSID="urn:lsid:plazi:treatment:6515E6230A241E1139A36647FD969654" httpUri="http://treatment.plazi.org/id/6515E6230A241E1139A36647FD969654" lastPageId="20" lastPageNumber="21" pageId="19" pageNumber="20">
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<subSubSection id="A5A604BE0A241E1639A36647FC209375" box="[682,905,265,291]" pageId="19" pageNumber="20" type="nomenclature">
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<paragraph id="ED0357350A241E1639A36647FC209375" blockId="19.[682,905,265,327]" box="[682,905,265,291]" pageId="19" pageNumber="20">
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<taxonomicName id="2ABC2CB60A241E1639A36647FC209375" box="[682,905,265,291]" class="Maxillopoda" family="Hansenocarididae" genus="Hansenocaris" kingdom="Animalia" pageId="19" pageNumber="20" phylum="Arthropoda" rank="species" species="Type B">
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Y-nauplius
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<emphasis id="DFC88B270A241E1638386647FC209375" bold="true" box="[817,905,265,291]" pageId="19" pageNumber="20">
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<typeStatus id="3207E9970A241E1638386647FCC79375" box="[817,878,265,291]" pageId="19" pageNumber="20">Type</typeStatus>
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B
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</emphasis>
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</taxonomicName>
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</paragraph>
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</subSubSection>
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<subSubSection id="A5A604BE0A241E1639C16662FCC29311" box="[712,875,300,327]" pageId="19" pageNumber="20" type="description">
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<paragraph id="ED0357350A241E1639C16662FCC29311" blockId="19.[682,905,265,327]" box="[712,875,300,327]" pageId="19" pageNumber="20">
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<figureCitation id="75874BB00A241E1639C16662FCBA9310" box="[712,787,300,326]" captionStart="Fig" captionStartId="5.[189,232,1737,1763]" captionTargetBox="[189,1399,266,1703]" captionTargetId="figure-128@5.[189,1399,265,1703]" captionTargetPageId="5" captionText="Fig. 2. Y-naupliar (Facetotecta) diversity at Sesoko Island (Okinawa, Japan). A. Schematic life cycle of y-larvae (modified from Itô 1991; Glenner et al. 2008). B. Overview of 34 morphospecies of lecithotrophic last-stage y-nauplii obtained by laboratory rearing of earlier-stage nauplii collected in the plankton; three of them represent formally described species while 31 remain undescribed. C. Nine types of planktotrophic y-larvae, of which only Type A* is treated in detail in this paper. All photos in B and C are to the same scale. Figure also used in Olesen (2004). Examples of live video of most of the y-naupliar morphospecies can be seen at https://youtu.be/er0mYLswV-c and are also deposited at Figshare.com: https://doi.org/10.6084/m9.figshare.24953568.v1." figureDoi="http://doi.org/10.5281/zenodo.10876295" httpUri="https://zenodo.org/record/10876295/files/figure.png" pageId="19" pageNumber="20">Figs 2</figureCitation>
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,
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<figureCitation id="75874BB00A241E1638166663FCC29311" box="[799,875,301,327]" captionStart="Fig" captionStartId="19.[189,232,1892,1918]" captionTargetBox="[189,1399,584,1865]" captionTargetId="figure-111@19.[189,1399,584,1865]" captionTargetPageId="19" captionText="Fig. 7. Last-stage nauplii of two different morphospecies of y-larvae (Facetotecta) from Sesoko Island (Okinawa, Japan). A–G. Type D* (“Big brown”). H–M. Type B. Shown either in life (A–B, H–J) or as slide-mounted exuviae (C–G, K–M). Abbreviations: A1 = first antenna; A2 = second antenna; Md = mandible." figureDoi="http://doi.org/10.5281/zenodo.10876310" httpUri="https://zenodo.org/record/10876310/files/figure.png" pageId="19" pageNumber="20">7H–M</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="A5A604BE0A241E163BB46620FCE593DE" box="[189,844,365,392]" pageId="19" pageNumber="20" type="reference_group">
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<paragraph id="ED0357350A241E163BB46620FCE593DE" blockId="19.[189,844,365,392]" box="[189,844,365,392]" pageId="19" pageNumber="20">
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<typeStatus id="3207E9970A241E163BB46620FF5E93DE" box="[189,247,366,392]" pageId="19" pageNumber="20">Type</typeStatus>
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B –
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<treatmentCitation id="6C1D71240A241E163A266620FDBF93DE" author="Dreyer et al." box="[303,534,366,392]" pageId="19" pageNumber="20" year="2023">
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<bibRefCitation id="892D2AC40A241E163A266620FDBF93DE" author="Dreyer N. & Palero F. & Grygier M. J. & Chan B. K. K. & Olesen J." box="[303,534,366,392]" pageId="19" pageNumber="20" pagination="107780" refId="ref35132" refString="Dreyer N., Palero F., Grygier M. J., Chan B. K. K. & Olesen J. 2023 a. Single-specimen systematics resolves the phylogeny and diversity conundrum of enigmatic crustacean y-larvae. Molecular Phylogenetics and Evolution 184: e 107780. https: // doi. org / 10.1016 / j. ympev. 2023.107780" type="journal article" year="2023">
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Dreyer
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<emphasis id="DFC88B270A241E163A816620FE6A93DE" box="[392,451,366,392]" italics="true" pageId="19" pageNumber="20">et al.</emphasis>
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2023a
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</bibRefCitation>
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</treatmentCitation>
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: figs 2, 5a, c, tables s1–s2.
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</paragraph>
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</subSubSection>
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<subSubSection id="A5A604BE0A241E163BB466E1FC79904D" pageId="19" pageNumber="20" type="materials_examined">
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<paragraph id="ED0357350A241E163BB466E1FE03939F" blockId="19.[189,426,431,457]" box="[189,426,431,457]" pageId="19" pageNumber="20">
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<heading id="B64BE0590A241E163BB466E1FE03939F" bold="true" box="[189,426,431,457]" fontSize="11" level="3" pageId="19" pageNumber="20" reason="3">
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<emphasis id="DFC88B270A241E163BB466E1FE03939F" bold="true" box="[189,426,431,457]" pageId="19" pageNumber="20">Material examined</emphasis>
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</heading>
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</paragraph>
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<paragraph id="ED0357350A241E163BB46690FC79904D" blockId="19.[189,1398,475,539]" pageId="19" pageNumber="20">
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<materialsCitation id="5DD45D680A241E163BB46690FACC93AE" box="[189,1381,475,504]" collectorName="Sesoko I." country="Japan" county="Sesoko" latitude="26.635944" location="Sesoko I." longLatPrecision="1" longitude="127.86533" pageId="19" pageNumber="20" specimenCount="1" specimenCount-larva="1" stateProvince="Okinawa">
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<collectingCountry id="95AB17A50A241E163BB46690FEBF93AE" box="[189,278,478,504]" name="Japan" pageId="19" pageNumber="20">JAPAN</collectingCountry>
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–
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<emphasis id="DFC88B270A241E163A386693FBC793AE" bold="true" box="[305,1134,475,504]" pageId="19" pageNumber="20">
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<collectingRegion id="2F7899D70A241E163A386693FE0C93A1" box="[305,421,477,503]" country="Japan" name="Okinawa" pageId="19" pageNumber="20">Okinawa</collectingRegion>
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,
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<location id="E86301EE0A241E163AB86693FD8893AE" LSID="urn:lsid:plazi:treatment:6515E6230A241E1139A36647FD969654:E86301EE0A241E163AB86693FD8893AE" box="[433,545,477,504]" country="Japan" county="Sesoko" latitude="26.635944" longLatPrecision="1" longitude="127.86533" name="Sesoko I." pageId="19" pageNumber="20" stateProvince="Okinawa">Sesoko I.</location>
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, laboratory pier,
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<geoCoordinate id="888831F20A241E1639F06695FC0E93AE" box="[761,935,475,504]" degrees="26" direction="north" minutes="38" orientation="latitude" pageId="19" pageNumber="20" precision="1" seconds="09.4" value="26.635944">26°38ʹ09.4ʺ N</geoCoordinate>
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,
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<geoCoordinate id="888831F20A241E1638BD6695FBC793AE" box="[948,1134,475,504]" degrees="127" direction="east" minutes="51" orientation="longitude" pageId="19" pageNumber="20" precision="1" seconds="55.2" value="127.86533">127°51ʹ55.2ʺ E</geoCoordinate>
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</emphasis>
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•
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<specimenCount id="FBBA9CBC0A241E163F8F6690FB7F93AE" box="[1158,1238,478,504]" count="1" pageId="19" pageNumber="20" type="larva">1 LSN</specimenCount>
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; 1991–2005
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</materialsCitation>
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•
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<materialsCitation id="5DD45D680A241E163BB4654FFC79904D" box="[189,976,513,539]" pageId="19" pageNumber="20" specimenCount="3" specimenCount-larva="3">
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<specimenCount id="FBBA9CBC0A241E163BB4654FFEA4904D" box="[189,269,513,539]" count="3" pageId="19" pageNumber="20" type="larva">3 LSN</specimenCount>
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, 1 of which molted to cyprid; 2018–2019 (
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<tableCitation id="A03E628E0A241E16380B654FFC16904D" box="[770,959,513,539]" captionStart="Table 1" captionStartId="8.[187,256,1680,1706]" captionTargetPageId="7" captionText="Table 1 (page 8). Lecithotrophic y-naupliar morphospecies (‘Types’) successfully reared during fieldwork at Sesoko Island (Okinawa) in 2018 and 2019, based on 5137 sampled lecithotrophic nauplii, with sporadic data added from earlier sampling in 1991–2005. The y-naupliar morphospecies are listed in descending order of abundance in 2018 and 2019 (column 4). Developmental time to cyprid and mean body length of last-stage nauplii (LSN) are shown, along with calculated rearing success to LSN or cyprid, degree of overlap in occurrence in both years, and correlation between morphospecies abundance and size (see Fig. 20). The data are extracted from the more comprehensive supplementary Table S1. Asterisks (e.g., Types A*, D*, E*) are added to the designations of morphospecies that exhibited molecular variation among specimens in Dreyer et al. (2023a) and might therefore represent more than one biological species." pageId="19" pageNumber="20">Tables 1 and S1</tableCitation>
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).
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</materialsCitation>
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</paragraph>
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</subSubSection>
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<caption id="B9C307BD0A241E163BB4602AFED395BE" ID-DOI="http://doi.org/10.5281/zenodo.10876310" ID-Zenodo-Dep="10876310" httpUri="https://zenodo.org/record/10876310/files/figure.png" pageId="19" pageNumber="20" startId="19.[189,232,1892,1918]" targetBox="[189,1399,584,1865]" targetPageId="19">
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<paragraph id="ED0357350A241E163BB4602AFED395BE" blockId="19.[189,1399,1892,2024]" pageId="19" pageNumber="20">
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<emphasis id="DFC88B270A241E163BB4602AFEA29528" bold="true" box="[189,267,1892,1918]" pageId="19" pageNumber="20">Fig. 7.</emphasis>
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Last-stage nauplii of two different morphospecies of y-larvae (
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<taxonomicName id="2ABC2CB60A241E1638FE602AFB289528" authorityName="Grygier" authorityYear="1985" box="[1015,1153,1892,1918]" class="Malacostraca" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="19" pageNumber="15" phylum="Arthropoda" rank="subClass" subClass="Facetotecta">Facetotecta</taxonomicName>
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) from Sesoko Island (Okinawa, Japan).
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<emphasis id="DFC88B270A241E163AAA60C9FE7795F7" bold="true" box="[419,478,1927,1953]" pageId="19" pageNumber="20">A–G</emphasis>
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. Type D* (“Big brown”).
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<emphasis id="DFC88B270A241E16382160C9FCC095F7" bold="true" box="[808,873,1927,1953]" pageId="19" pageNumber="20">H–M</emphasis>
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. Type B. Shown either in life (A–B, H–J) or as slide-mounted exuviae (C–G, K–M). Abbreviations: A1 = first antenna; A2 = second antenna; Md = mandible.
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</paragraph>
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</caption>
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<subSubSection id="A5A604BE0A231E113BB46646FE4491CC" pageId="20" pageNumber="21" type="description">
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<paragraph id="ED0357350A231E113BB46646FEE79374" blockId="20.[189,334,264,290]" box="[189,334,264,290]" pageId="20" pageNumber="21">
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<heading id="B64BE0590A231E113BB46646FEE79374" bold="true" box="[189,334,264,290]" fontSize="11" level="3" pageId="20" pageNumber="21" reason="3">
|
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|
<emphasis id="DFC88B270A231E113BB46646FEE79374" bold="true" box="[189,334,264,290]" pageId="20" pageNumber="21">Description</emphasis>
|
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</heading>
|
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</paragraph>
|
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<paragraph id="ED0357350A231E113BB46679FBC0903D" blockId="20.[189,1401,311,619]" pageId="20" pageNumber="21">
|
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|
|
LAST-STAGE
|
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|
<taxonomicName id="2ABC2CB60A231E113A446679FDBC9307" authority="(LSN)" baseAuthorityName="LSN" box="[333,533,311,337]" class="Malacostraca" family="Alpheidae" genus="Nauplius" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="20" pageNumber="21" phylum="Arthropoda" rank="genus">NAUPLIUS (LSN)</taxonomicName>
|
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|
. Lecithotrophic. Body ovate in dorso-ventral view; about twice as long as wide; lateral margins tapering gradually towards caudal end with no discontinuity at posterior end of cephalic shield. Dorsum evenly curved in lateral view, with trunk axis downturned 50–55° relative to cephalic axis. Length 250–265 µm (without dorso-caudal spine), 275 µm in lateral view following body curvature; greatest width 160 µm and greatest dorso-ventral thickness 70–75 µm. Labrum weakly elevated, sub-quadrangular, approximately as long as wide; surface not divided into facets by cuticular ridges; pore pattern not examined in detail. Caudal end narrowly truncate, terminating in short (12 µm), triangular dorso-caudal spine positioned unusually far anteriorly on dorsal side and pair of longer (20 µm), narrow, sharply pointed, slightly upcurved and diverging furcal spines.
|
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|
|
</paragraph>
|
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|
|
<paragraph id="ED0357350A231E113BB465C5FD7690BD" blockId="20.[186,1399,650,747]" pageId="20" pageNumber="21">CYPRID VIEWED THROUGH CUTICLE OF LSN. Body practically unpigmented, although naupliar appendages weakly brownish. Gut-like tube packed with orange-brown yolk granules. Telson small, wider than long, significantly shorter than half of thorax length.</paragraph>
|
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|
|
<paragraph id="ED0357350A231E113BB46444FDBC9172" blockId="20.[189,533,778,805]" box="[189,533,778,805]" pageId="20" pageNumber="21">
|
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|
|
<heading id="B64BE0590A231E113BB46444FDBC9172" bold="true" box="[189,533,778,805]" fontSize="11" level="3" pageId="20" pageNumber="21" reason="3">
|
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|
|
<emphasis id="DFC88B270A231E113BB46444FDBC9172" bold="true" box="[189,533,778,805]" pageId="20" pageNumber="21">Identification and variation</emphasis>
|
|||
|
|
</heading>
|
|||
|
|
</paragraph>
|
|||
|
|
<paragraph id="ED0357350A231E113BB46477FE4491CC" blockId="20.[189,1401,825,922]" pageId="20" pageNumber="21">Easily recognizable by its unusually forward-positioned dorso-caudal spine, evenly curved (in lateral view) body and broadly triangular ventral trunk region. No distinct variation was apparent among the few examined specimens.</paragraph>
|
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|
|
</subSubSection>
|
|||
|
|
<subSubSection id="A5A604BE0A231E113BB464F7FD969654" box="[189,575,953,1027]" pageId="20" pageNumber="21" type="distribution">
|
|||
|
|
<paragraph id="ED0357350A231E113BB464F7FEFF9185" blockId="20.[189,342,953,979]" box="[189,342,953,979]" pageId="20" pageNumber="21">
|
|||
|
|
<heading id="B64BE0590A231E113BB464F7FEFF9185" bold="true" box="[189,342,953,979]" fontSize="11" level="3" pageId="20" pageNumber="21" reason="3">
|
|||
|
|
<emphasis id="DFC88B270A231E113BB464F7FEFF9185" bold="true" box="[189,342,953,979]" pageId="20" pageNumber="21">Distribution</emphasis>
|
|||
|
|
</heading>
|
|||
|
|
</paragraph>
|
|||
|
|
<paragraph id="ED0357350A231E113BB464A7FD969654" blockId="20.[189,575,1000,1027]" box="[189,575,1000,1027]" pageId="20" pageNumber="21">
|
|||
|
|
<collectingCountry id="95AB17A50A231E113BB464A7FEA99655" box="[189,256,1001,1027]" name="Japan" pageId="20" pageNumber="21">Japan</collectingCountry>
|
|||
|
|
(Sesoko Island,
|
|||
|
|
<collectingRegion id="2F7899D70A231E113ACA64A6FD9B9654" box="[451,562,1000,1026]" country="Japan" name="Okinawa" pageId="20" pageNumber="21">Okinawa</collectingRegion>
|
|||
|
|
).
|
|||
|
|
</paragraph>
|
|||
|
|
</subSubSection>
|
|||
|
|
</treatment>
|
|||
|
|
</document>
|