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<document id="8CE624B9FFDDA96D919E83BBBD67D2CD" ID-DOI="10.5281/zenodo.5399797" ID-ISSN="1638-9387" ID-Zenodo-Dep="5399797" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1630332745144" checkinUser="marcus" docAuthor="Monniot, Françoise &amp; Monniot, Claude" docDate="2006" docId="F11D0437FFB84B08FCDC8083E0C4FAC1" docLanguage="fr" docName="Zoosystema.2006.28.1.113-156.pdf" docOrigin="Zoosystema 28 (1)" docStyle="DocumentStyle:2A9C6F9EA5F90D98170D9E0D9CA29375.4:Zoosystema.2000-2008.journal_article.type1" docStyleId="2A9C6F9EA5F90D98170D9E0D9CA29375" docStyleName="Zoosystema.2000-2008.journal_article.type1" docStyleVersion="4" docTitle="Eudistoma atypicum Monniot &amp; Monniot 2006, n. sp." docType="treatment" docVersion="3" lastPageNumber="136" masterDocId="0D247C4FFFAD4B1FFFC38251E238FFA7" masterDocTitle="Ascidies (Polyclinidae, Pseudodistomidae et Polycitoridae) de l’ouest de l’océan Indien" masterLastPageNumber="156" masterPageNumber="113" pageNumber="134" updateTime="1699231481374" updateUser="plazi" zenodo-license-document="CC0-1.0" zenodo-license-figures="CC0-1.0" zenodo-license-treatments="UNSPECIFIED">
<mods:mods id="E0A9ACD480C2C7916BCEE8575A9387C2" xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo id="30CBD6E2C6FD9B7339B39E73D1B99F87">
<mods:title id="BA810B23625BA2C953EB0310A2E56506">Ascidies (Polyclinidae, Pseudodistomidae et Polycitoridae) de l’ouest de l’océan Indien</mods:title>
</mods:titleInfo>
<mods:name id="D6543B44D786C2A70E4CBD1215C3050A" type="personal">
<mods:role id="4D6FE183FBE0D6BC4828287F02F8913A">
<mods:roleTerm id="2998046CF7990BD034C9F67C018BFF75">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="1B835CC7E4B42D8B32011F46860F664E">Monniot, Françoise</mods:namePart>
</mods:name>
<mods:name id="8993149281B72B0E9D09F094C57C46C0" type="personal">
<mods:role id="D743D721B71658F3B7F41827B9EEEA57">
<mods:roleTerm id="7BB813BCBEC462A2DC6F077E7BBCBC63">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="0C3E6552955C702F6A9FF2E83D930BF2">Monniot, Claude</mods:namePart>
<mods:affiliation id="75B60B2CFCC8C1201D4EFB6D9E8DD3B0">Muséum national d’Histoire naturelle, Département Milieux et Peuplements aquatiques, case postale 51, 57 rue Cuvier, F- 75231 Paris cedex 05 (France) monniot @ mnhn. fr</mods:affiliation>
<mods:nameIdentifier id="3E333F9EC079DFC8AEBCC84BB175FBDA" type="email">monniot@mnhn.fr</mods:nameIdentifier>
</mods:name>
<mods:typeOfResource id="CE4E032C1B729C2103BEF2030CA709E9">text</mods:typeOfResource>
<mods:relatedItem id="6FE7A3A518CA305765082620724458B0" type="host">
<mods:titleInfo id="E661E02587694C5DA8CCD84F249FC2FD">
<mods:title id="42980C01A21E49449106AA63C72D21FE">Zoosystema</mods:title>
</mods:titleInfo>
<mods:part id="DB0FFC0EDD54703F0D1A7255C04C2005">
<mods:date id="1F1ADAC56406146D7FADEA726CAAA764">2006</mods:date>
<mods:detail id="520A3933ADB139EEA3D4A52E1934A472" type="volume">
<mods:number id="1995D3C43F6EA7CD2EF6D35BA4C6E904">28</mods:number>
</mods:detail>
<mods:detail id="31038B451A6B8DC9D716C8BEDEFDBEE6" type="issue">
<mods:number id="80E203B692715A0EF74FF03535F71E16">1</mods:number>
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<mods:extent id="513D33CA4731F654A6B20DF808DD8AD1" unit="page">
<mods:start id="4A9AF12AC3786711B7F04395017156BC">113</mods:start>
<mods:end id="80492EDAD59AB29BC25646BE2B155FB2">156</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:classification id="CCB834530C9C0971071CA10F19FB6E01">journal article</mods:classification>
<mods:identifier id="5EDD8D34E603640DC0189C4E596A0319" type="DOI">10.5281/zenodo.5399797</mods:identifier>
<mods:identifier id="75EAD29F20452DEE2739B3D98453C10F" type="ISSN">1638-9387</mods:identifier>
<mods:identifier id="EED8B89F563920C3506D0147DFA69254" type="Zenodo-Dep">5399797</mods:identifier>
</mods:mods>
<treatment id="F11D0437FFB84B08FCDC8083E0C4FAC1" LSID="urn:lsid:plazi:treatment:F11D0437FFB84B08FCDC8083E0C4FAC1" httpUri="http://treatment.plazi.org/id/F11D0437FFB84B08FCDC8083E0C4FAC1" lastPageId="23" lastPageNumber="136" pageId="21" pageNumber="134">
<subSubSection id="31AEE6AAFFB84B0AFCDC8083E607FD4A" box="[799,1087,722,749]" pageId="21" pageNumber="134" type="nomenclature">
<paragraph id="790BB521FFB84B0AFCDC8083E607FD4A" blockId="21.[799,1087,722,781]" box="[799,1087,722,749]" pageId="21" pageNumber="134">
<heading id="2243024DFFB84B0AFCDC8083E607FD4A" box="[799,1087,722,749]" centered="true" fontSize="11" level="2" pageId="21" pageNumber="134" reason="2">
<taxonomicName id="BEB4CEA2FFB84B0AFCDC8083E1C5FD4A" ID-CoL="3C282" authority="Monniot &amp; Monniot, 2006" authorityName="Monniot &amp; Monniot" authorityYear="2006" box="[799,1021,722,749]" class="Ascidiacea" family="Polycitoridae" genus="Eudistoma" kingdom="Animalia" order="Aplousobranchia" pageId="21" pageNumber="134" phylum="Chordata" rank="species" species="atypicum" status="sp. nov.">
<emphasis id="4BC06933FFB84B0AFCDC8083E1C5FD4A" bold="true" box="[799,1021,722,749]" italics="true" pageId="21" pageNumber="134">Eudistoma atypicum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="50F3D448FFB84B0AFBC68082E607FD4A" box="[1029,1087,723,749]" pageId="21" pageNumber="134" rank="species">n. sp.</taxonomicNameLabel>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="31AEE6AAFFB84B0AFC9C80A3E1C7FCAA" box="[863,1023,754,781]" pageId="21" pageNumber="134" type="description">
<paragraph id="790BB521FFB84B0AFC9C80A3E1C7FCAA" blockId="21.[799,1087,722,781]" box="[863,1023,754,781]" pageId="21" pageNumber="134">
(
<figureCitation id="E18FA9A4FFB84B0AFCA580A3E18DFCAA" box="[870,949,754,781]" captionStart="FIG" captionStartId="22.[137,148,1379,1396]" captionTargetBox="[86,1240,169,1349]" captionTargetId="figure-21@22.[86,1240,169,1349]" captionTargetPageId="22" captionText="FIG. 13. — Eudistoma atypicum n. sp.: A, zoïde; B, thorax; C, D, deux faces de la région stomacale; E, larve. Échelles: 1 mm." figureDoi="http://doi.org/10.5281/zenodo.5399823" httpUri="https://zenodo.org/record/5399823/files/figure.png" pageId="21" pageNumber="134">Figs 13</figureCitation>
;
<figureCitation id="E18FA9A4FFB84B0AFC0480A3E1CFFCAA" box="[967,1015,754,781]" captionStart="FIG" captionStartId="38.[113,124,1657,1674]" captionTargetBox="[131,1189,215,1573]" captionTargetId="figure-22@38.[131,1189,214,1575]" captionTargetPageId="38" captionText="FIG. 26. — A, Cystodytes luteus Monniot F., 1988 (photo CRRF); B, Cystodytes solitus Monniot F., 1988 (photo CRRF); C, Eudistoma atypicum n. sp.; D, Cystodytes violatinctus Monniot F., 1988 (photo P. Laboute)." figureDoi="http://doi.org/10.5281/zenodo.5399849" httpUri="https://zenodo.org/record/5399849/files/figure.png" pageId="21" pageNumber="134">26C</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="31AEE6AAFFB84B0AFD66817DE1F0FC65" pageId="21" pageNumber="134" type="materials_examined">
<paragraph id="790BB521FFB84B0AFD66817DE67EFCF9" blockId="21.[677,1209,811,862]" pageId="21" pageNumber="134">
<materialsCitation id="C9DCBF7CFFB84B0AFD66817DE67EFCF9" collectingDate="1995-11-17" collectionCode="MNHN" collectorName="C. Monniot" country="Mozambique" elevation="10" location="Ibo" pageId="21" pageNumber="134" specimenCode="A3, EUD 256" specimenCount="1" typeStatus="holotype">
<typeStatus id="A60F0B83FFB84B0AFD66817DE137FCE5" box="[677,783,812,835]" pageId="21" pageNumber="134" type="holotype">HOLOTYPE</typeStatus>
. —
<emphasis id="4BC06933FFB84B0AFCFF817CE1FFFCE2" bold="true" box="[828,967,813,837]" pageId="21" pageNumber="134">
<collectingCountry id="01A3F5B1FFB84B0AFCFF817CE1FAFCE2" box="[828,962,813,837]" name="Mozambique" pageId="21" pageNumber="134">Mozambique</collectingCountry>
.
</emphasis>
<location id="7C6BE3FAFFB84B0AFC0C817AE1CBFCE4" LSID="urn:lsid:plazi:treatment:F11D0437FFB84B08FCDC8083E0C4FAC1:7C6BE3FAFFB84B0AFC0C817AE1CBFCE4" box="[975,1011,811,835]" country="Mozambique" name="Ibo" pageId="21" pageNumber="134">Ibo</location>
,
<quantity id="BE4C18C4FFB84B0AFC3D817AE60DFCE4" box="[1022,1077,811,835]" metricMagnitude="1" metricUnit="m" metricValue="1.0" pageId="21" pageNumber="134" unit="m" value="10.0">
<elevation id="F2995212FFB84B0AFC3D817AE60DFCE4" box="[1022,1077,811,835]" metricMagnitude="1" metricUnit="m" metricValue="1.0" pageId="21" pageNumber="134" unit="m" value="10.0">10 m</elevation>
</quantity>
,
<date id="0D0A93E1FFB84B0AFB81817AE68DFCE4" box="[1090,1205,811,835]" pageId="21" pageNumber="134" value="1995-11-17">
<collectingDate id="1D4E6A09FFB84B0AFB81817AE68DFCE4" box="[1090,1205,811,835]" pageId="21" pageNumber="134" value="1995-11-17">17.XI.1995</collectingDate>
</date>
, coll.
<collectorName id="D441D0F7FFB84B0AFD178117E172FCF9" box="[724,842,838,862]" pageId="21" pageNumber="134">C. Monniot</collectorName>
(
<collectionCode id="1FA52DE4FFB84B0AFC9B8117E194FCF9" box="[856,940,838,862]" country="France" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34988" lsid="urn:lsid:biocol.org:col:34988" name="Museum National d'Histoire Naturelle" pageId="21" pageNumber="134">MNHN</collectionCode>
<specimenCode id="29121D5AFFB84B0AFC718117E603FCF9" box="[946,1083,838,862]" collectionCode="MNHN" country="France" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34988" lsid="urn:lsid:biocol.org:col:34988" name="Museum National d'Histoire Naturelle" pageId="21" pageNumber="134">A3 EUD 256</specimenCode>
).
</materialsCitation>
</paragraph>
<paragraph id="790BB521FFB84B0AFD668126E1F0FC65" blockId="21.[677,1209,885,962]" pageId="21" pageNumber="134">
<collectionCode id="1FA52DE4FFB84B0AFD668126E1A7FC2A" box="[677,927,887,911]" pageId="21" pageNumber="134">AUTRE MATÉRIEL EXAMINÉ</collectionCode>
. —
<emphasis id="4BC06933FFB84B0AFC0A8126E669FC28" bold="true" box="[969,1105,887,911]" pageId="21" pageNumber="134">
<collectingCountry id="01A3F5B1FFB84B0AFC0A8126E676FC28" box="[969,1102,887,911]" name="Mozambique" pageId="21" pageNumber="134">Mozambique</collectingCountry>
.
</emphasis>
Ibo,
<quantity id="BE4C18C4FFB84B0AFB418127E68DFC2A" box="[1154,1205,886,910]" metricMagnitude="1" metricUnit="m" metricValue="1.0" pageId="21" pageNumber="134" unit="m" value="10.0">10 m</quantity>
,
<date id="0D0A93E1FFB84B0AFD6681C1E12DFC0F" box="[677,789,912,936]" pageId="21" pageNumber="134" value="1995-11-12">12.XI.1995</date>
et
<date id="0D0A93E1FFB84B0AFCF381C1E19CFC0F" box="[816,932,912,936]" pageId="21" pageNumber="134" value="1995-11-14">14.XI.1995</date>
, coll. C. Monniot, 3 colonies (
<collectionCode id="1FA52DE4FFB84B0AFD6F81FBE138FC65" box="[684,768,938,962]" country="France" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34988" lsid="urn:lsid:biocol.org:col:34988" name="Museum National d'Histoire Naturelle" pageId="21" pageNumber="134">MNHN</collectionCode>
A3 EUD 257-259).
</paragraph>
</subSubSection>
<subSubSection id="31AEE6AAFFB84B08FD66818AE0C4FAC1" lastPageId="23" lastPageNumber="136" pageId="21" pageNumber="134" type="description">
<paragraph id="790BB521FFB84B0AFD66818AE0F7FBAB" blockId="21.[677,1210,986,1036]" pageId="21" pageNumber="134">
ÉTYMOLOGIE. — Du latin
<emphasis id="4BC06933FFB84B0AFC74818AE1FAFC55" box="[951,962,987,1010]" italics="true" pageId="21" pageNumber="134">a</emphasis>
privatif et
<emphasis id="4BC06933FFB84B0AFBF4818AE640FC55" box="[1079,1144,987,1010]" italics="true" pageId="21" pageNumber="134">typicus</emphasis>
: typique.
</paragraph>
<paragraph id="790BB521FFB84B0AFD668661E10DFBEF" blockId="21.[677,1210,1072,1700]" box="[677,821,1072,1098]" pageId="21" pageNumber="134">DESCRIPTION</paragraph>
<paragraph id="790BB521FFB84B0AFD66861EE63DF903" blockId="21.[677,1210,1072,1700]" pageId="21" pageNumber="134">
Plusieurs colonies ont été récoltées en des points divers, qui présentent toutes le même aspect. Elles sont entièrement incrustées de sable, très dures, dressées en lobes irréguliers (
<figureCitation id="E18FA9A4FFB84B0AFC6686FFE63FFB6E" box="[933,1031,1198,1225]" captionStart="FIG" captionStartId="38.[113,124,1657,1674]" captionTargetBox="[131,1189,215,1573]" captionTargetId="figure-22@38.[131,1189,214,1575]" captionTargetPageId="38" captionText="FIG. 26. — A, Cystodytes luteus Monniot F., 1988 (photo CRRF); B, Cystodytes solitus Monniot F., 1988 (photo CRRF); C, Eudistoma atypicum n. sp.; D, Cystodytes violatinctus Monniot F., 1988 (photo P. Laboute)." figureDoi="http://doi.org/10.5281/zenodo.5399849" httpUri="https://zenodo.org/record/5399849/files/figure.png" pageId="21" pageNumber="134">Fig. 26C</figureCitation>
). Une coloration violette apparaît entre les grains de sable, due à la tunique et qui diffuse dans le fixateur. Vivants, les zoïdes sont orangés. Il n’a pas été possible de mettre en évidence un arrangement particulier des zoïdes en systèmes dans les colonies. Les zoïdes les moins contractés atteignent
<quantity id="BE4C18C4FFB84B0AFC55873DE1F7FA20" box="[918,975,1388,1415]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="21" pageNumber="134" unit="cm" value="1.0">1 cm</quantity>
de longueur et leurs abdomens s’entrecroisent (
<figureCitation id="E18FA9A4FFB84B0AFC7387DDE635FA01" box="[944,1037,1420,1446]" captionStart="FIG" captionStartId="22.[137,148,1379,1396]" captionTargetBox="[86,1240,169,1349]" captionTargetId="figure-21@22.[86,1240,169,1349]" captionTargetPageId="22" captionText="FIG. 13. — Eudistoma atypicum n. sp.: A, zoïde; B, thorax; C, D, deux faces de la région stomacale; E, larve. Échelles: 1 mm." figureDoi="http://doi.org/10.5281/zenodo.5399823" httpUri="https://zenodo.org/record/5399823/files/figure.png" pageId="21" pageNumber="134">Fig. 13A</figureCitation>
). La musculature est particulièrement forte aussi bien sur le thorax que sur l’abdomen. La musculature thoracique comprend des fibres circulaires denses entrecroisées avec des fibres longitudinales régulièrement espacées. Les fibres longitudinales se réunissent seulement à la base du thorax qui est nettement rétrécie, pour former de chaque côté de l’abdomen un double ruban qui s’étend jusqu’au coeur.
</paragraph>
<caption id="2DCBE5A9FFBB4B09FF4A8732E69BFAD3" ID-DOI="http://doi.org/10.5281/zenodo.5399823" ID-Zenodo-Dep="5399823" box="[137,1187,1379,1396]" httpUri="https://zenodo.org/record/5399823/files/figure.png" pageId="22" pageNumber="135" startId="22.[137,148,1379,1396]" targetBox="[86,1240,169,1349]" targetPageId="22">
<paragraph id="790BB521FFBB4B09FF4A8732E69BFAD3" blockId="22.[137,1187,1379,1396]" box="[137,1187,1379,1396]" pageId="22" pageNumber="135">
FIG. 13. —
<taxonomicName id="BEB4CEA2FFBB4B09FF278732E3B5FAD3" authority="Monniot &amp; Monniot, 2006" authorityName="Monniot &amp; Monniot" authorityYear="2006" box="[228,397,1379,1396]" class="Ascidiacea" family="Polycitoridae" genus="Eudistoma" kingdom="Animalia" order="Aplousobranchia" pageId="22" pageNumber="135" phylum="Chordata" rank="species" species="atypicum" status="sp. nov.">
<emphasis id="4BC06933FFBB4B09FF278732E3B5FAD3" box="[228,397,1379,1396]" italics="true" pageId="22" pageNumber="135">Eudistoma atypicum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="50F3D448FFBB4B09FE518732E3FAFAD3" box="[402,450,1379,1396]" pageId="22" pageNumber="135" rank="species">n. sp.</taxonomicNameLabel>
:
<emphasis id="4BC06933FFBB4B09FE0E8732E3E2FAD3" bold="true" box="[461,474,1379,1396]" pageId="22" pageNumber="135">A</emphasis>
, zoïde;
<emphasis id="4BC06933FFBB4B09FDDD8732E013FAD3" bold="true" box="[542,555,1379,1396]" pageId="22" pageNumber="135">B</emphasis>
, thorax;
<emphasis id="4BC06933FFBB4B09FDB48732E0BDFAD3" bold="true" box="[631,645,1379,1396]" pageId="22" pageNumber="135">C</emphasis>
,
<emphasis id="4BC06933FFBB4B09FD538732E0A6FAD3" bold="true" box="[656,670,1379,1396]" pageId="22" pageNumber="135">D</emphasis>
, deux faces de la région stomacale;
<emphasis id="4BC06933FFBB4B09FC118732E1E6FAD3" bold="true" box="[978,990,1379,1396]" pageId="22" pageNumber="135">E</emphasis>
, larve. Échelles: 1 mm.
</paragraph>
</caption>
<paragraph id="790BB521FFBB4B09FF4B879DE15EF983" blockId="22.[113,647,1483,1700]" lastBlockId="22.[677,1210,1483,1700]" pageId="22" pageNumber="135">
Les deux siphons à six lobes sont égaux et courts. Les tentacules buccaux en quatre ordres sont au nombre de 40 environ, implantés sur une seule ligne. Le bourrelet péripharyngien est circulaire, séparé de la branchie par un large espace imperforé (
<figureCitation id="E18FA9A4FFBB4B09FF688438E336F923" box="[171,270,1641,1668]" captionStart="FIG" captionStartId="22.[137,148,1379,1396]" captionTargetBox="[86,1240,169,1349]" captionTargetId="figure-21@22.[86,1240,169,1349]" captionTargetPageId="22" captionText="FIG. 13. — Eudistoma atypicum n. sp.: A, zoïde; B, thorax; C, D, deux faces de la région stomacale; E, larve. Échelles: 1 mm." figureDoi="http://doi.org/10.5281/zenodo.5399823" httpUri="https://zenodo.org/record/5399823/files/figure.png" pageId="22" pageNumber="135">Fig. 13B</figureCitation>
). Le thorax est large et la branchie a de 55 à 65 stigmates dans le premier demi-rang relevé dorsalement, et plus de 40 stigmates dans le deuxième rang. Les languettes du raphé sont décalées à gauche.
</paragraph>
<paragraph id="790BB521FFBB4B08FD78847BE610FE17" blockId="22.[677,1210,1483,1700]" lastBlockId="23.[677,1210,216,1161]" lastPageId="23" lastPageNumber="136" pageId="22" pageNumber="135">
L’abdomen est allongé (
<figureCitation id="E18FA9A4FFBB4B09FC75847BE620F9E3" box="[950,1048,1578,1604]" captionStart="FIG" captionStartId="22.[137,148,1379,1396]" captionTargetBox="[86,1240,169,1349]" captionTargetId="figure-21@22.[86,1240,169,1349]" captionTargetPageId="22" captionText="FIG. 13. — Eudistoma atypicum n. sp.: A, zoïde; B, thorax; C, D, deux faces de la région stomacale; E, larve. Échelles: 1 mm." figureDoi="http://doi.org/10.5281/zenodo.5399823" httpUri="https://zenodo.org/record/5399823/files/figure.png" pageId="22" pageNumber="135">Fig. 13A</figureCitation>
). L’estomac cylindrique, plus long que large, est nettement marqué de deux ou trois côtes longitudinales (
<figureCitation id="E18FA9A4FFBB4B09FB938438E086F903" captionStart="FIG" captionStartId="22.[137,148,1379,1396]" captionTargetBox="[86,1240,169,1349]" captionTargetId="figure-21@22.[86,1240,169,1349]" captionTargetPageId="22" captionText="FIG. 13. — Eudistoma atypicum n. sp.: A, zoïde; B, thorax; C, D, deux faces de la région stomacale; E, larve. Échelles: 1 mm." figureDoi="http://doi.org/10.5281/zenodo.5399823" httpUri="https://zenodo.org/record/5399823/files/figure.png" pageId="22" pageNumber="135">Fig. 13C, D</figureCitation>
). Il est suivi d’un post-estomac conique puis d’un intestin moyen en courte ampoule. L’intestin postérieur débute par un renflement en anneau formant une sorte de caecum annulaire. L’anus est au milieu du thorax. La glande pylorique (
<figureCitation id="E18FA9A4FFBA4B08FB8C8366E689FEF6" box="[1103,1201,311,337]" captionStart="FIG" captionStartId="22.[137,148,1379,1396]" captionTargetBox="[86,1240,169,1349]" captionTargetId="figure-21@22.[86,1240,169,1349]" captionTargetPageId="22" captionText="FIG. 13. — Eudistoma atypicum n. sp.: A, zoïde; B, thorax; C, D, deux faces de la région stomacale; E, larve. Échelles: 1 mm." figureDoi="http://doi.org/10.5281/zenodo.5399823" httpUri="https://zenodo.org/record/5399823/files/figure.png" pageId="23" pageNumber="136">Fig. 13C</figureCitation>
) est formée de tubules rectilignes parallèles, allongés sur l’intestin postérieur en face de l’estomac et s’étend un peu plus antérieurement.
</paragraph>
<paragraph id="790BB521FFBA4B08FD7883E4E61AFE48" blockId="23.[677,1210,216,1161]" pageId="23" pageNumber="136">
Il existe un ou plusieurs prolongements vasculaires postérieurs à l’abdomen (
<figureCitation id="E18FA9A4FFBA4B08FC778384E62EFE48" box="[948,1046,469,495]" captionStart="FIG" captionStartId="22.[137,148,1379,1396]" captionTargetBox="[86,1240,169,1349]" captionTargetId="figure-21@22.[86,1240,169,1349]" captionTargetPageId="22" captionText="FIG. 13. — Eudistoma atypicum n. sp.: A, zoïde; B, thorax; C, D, deux faces de la région stomacale; E, larve. Échelles: 1 mm." figureDoi="http://doi.org/10.5281/zenodo.5399823" httpUri="https://zenodo.org/record/5399823/files/figure.png" pageId="23" pageNumber="136">Fig. 13A</figureCitation>
).
</paragraph>
<paragraph id="790BB521FFBA4B08FD7883A4E109FD6A" blockId="23.[677,1210,216,1161]" pageId="23" pageNumber="136">Les gonades occupent toute la boucle intestinale derrière l’estomac. L’ovaire est central. Les vésicules testiculaires ont des tailles irrégulières et des formes anguleuses, elles sont parfois lobées. Chaque vésicule émet un fin canal spermatique. Les canaux convergent en un spermiducte commun, au niveau de l’estomac.</paragraph>
<paragraph id="790BB521FFBA4B08FD788082E674FB2F" blockId="23.[677,1210,216,1161]" pageId="23" pageNumber="136">
Les larves sont incubées dans la cavité cloacale, mais une seule à la fois atteint la maturité. Le tronc mesure
<quantity id="BE4C18C4FFBA4B08FCFE8143E1ADFC8A" box="[829,917,786,813]" metricMagnitude="-3" metricUnit="m" metricValue="1.1" pageId="23" pageNumber="136" unit="mm" value="1.1">1,1 mm</quantity>
de long et la queue décrit un demi-tour (
<figureCitation id="E18FA9A4FFBA4B08FC8E8163E18AFCEB" box="[845,946,818,844]" captionStart="FIG" captionStartId="22.[137,148,1379,1396]" captionTargetBox="[86,1240,169,1349]" captionTargetId="figure-21@22.[86,1240,169,1349]" captionTargetPageId="22" captionText="FIG. 13. — Eudistoma atypicum n. sp.: A, zoïde; B, thorax; C, D, deux faces de la région stomacale; E, larve. Échelles: 1 mm." figureDoi="http://doi.org/10.5281/zenodo.5399823" httpUri="https://zenodo.org/record/5399823/files/figure.png" pageId="23" pageNumber="136">Fig. 13E</figureCitation>
). Les papilles adhésives sont très espacées, courtes, alignées. Elles ont une forme en plateau. De très nombreuses vésicules épidermiques en grappes se répartissent de chaque côté dorsalement et ventralement ainsi que dans la partie antérieure de la larve autour des papilles adhésives. Elle n’ont pas la structure habituelle du genre (d’où le nom d’espèce) mais rappellent celle des
<taxonomicName id="BEB4CEA2FFBA4B08FD0C867EE16DFBEE" authorityName="Milne-Edwards" authorityYear="1841" box="[719,853,1071,1097]" class="Ascidiacea" family="Polyclinidae" kingdom="Animalia" order="Aplousobranchia" pageId="23" pageNumber="136" phylum="Chordata" rank="family">Polyclinidae</taxonomicName>
. Ocelle et otolithe sont présents. Les organes internes ne sont pas développés à ce stade, excepté les ébauches des siphons.
</paragraph>
<paragraph id="790BB521FFBA4B08FD6686FFE110FB61" blockId="23.[677,1210,1198,1382]" box="[677,808,1198,1224]" pageId="23" pageNumber="136">REMARQUES</paragraph>
<paragraph id="790BB521FFBA4B08FD66869FE0C4FAC1" blockId="23.[677,1210,1198,1382]" pageId="23" pageNumber="136">
Cette espèce d’
<taxonomicName id="BEB4CEA2FFBA4B08FC87869CE18AFB40" authorityName="Caullery" authorityYear="1909" box="[836,946,1229,1255]" class="Ascidiacea" family="Polycitoridae" genus="Eudistoma" kingdom="Animalia" order="Aplousobranchia" pageId="23" pageNumber="136" phylum="Chordata" rank="genus">
<emphasis id="4BC06933FFBA4B08FC87869CE18AFB40" box="[836,946,1229,1255]" italics="true" pageId="23" pageNumber="136">Eudistoma</emphasis>
</taxonomicName>
se distingue par la structure de ses grosses larves, par la forme symétrique de l’estomac qui présente des côtes longitudinales. La couleur violette de la tunique disparaît dans le fixateur.
</paragraph>
</subSubSection>
</treatment>
</document>
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