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<document id="432DC3B2D6433557F8DA303639D3D5B0" ID-DOI="10.1080/00222930600621601" ID-ISSN="1464-5262" ID-Zenodo-Dep="5232431" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1629452529763" checkinUser="felipe" docAuthor="Kott, Patricia" docDate="2006" docId="011D87C1FFE6CD541FCAFD18E3AFFE28" docLanguage="en" docName="JNatHist.40.3-4.169-234.pdf" docOrigin="Journal of Natural History 40 (3 - 4)" docSource="http://dx.doi.org/10.1080/00222930600621601" docStyle="DocumentStyle:5A9EB2ED5589A523F0236C66DE2A6BA8.4:JNatHist.2005-2007.journal_article.1cover" docStyleId="5A9EB2ED5589A523F0236C66DE2A6BA8" docStyleName="JNatHist.2005-2007.journal_article.1cover" docStyleVersion="4" docTitle="Eucoelium orientalis" docType="treatment" docVersion="4" lastPageNumber="190" masterDocId="FD24FFB9FFF3CD421E03FFA7E272FFAC" masterDocTitle="Observations on non-didemnid ascidians from Australian waters (1)" masterLastPageNumber="234" masterPageNumber="169" pageNumber="189" updateTime="1699073750233" updateUser="plazi" zenodo-license-document="CC-BY-4.0" zenodo-license-figures="CC-BY-4.0">
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<mods:title id="3AF4F557DA1688CEC4599164ABC1B892">Observations on non-didemnid ascidians from Australian waters (1)</mods:title>
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<mods:date id="A843A1220E44295B8E105C12415F8020">2006</mods:date>
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<paragraph id="890B36D7FFE6CD571FCAFD18E104FD7B" blockId="21.[138,1116,703,759]" box="[457,886,703,727]" pageId="21" pageNumber="189">
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<taxonomicName id="4EB44D54FFE6CD571FCAFD18E104FD7B" ID-CoL="6GTYH" authority="(Kott, 1990)" baseAuthorityName="Kott" baseAuthorityYear="1990" box="[457,886,703,727]" class="Ascidiacea" family="Polycitoridae" genus="Eucoelium" kingdom="Animalia" order="Aplousobranchia" pageId="21" pageNumber="189" phylum="Chordata" rank="species" species="orientalis">
<emphasis id="BBC0EAC5FFE6CD571FCAFD18E0AAFD7B" bold="true" box="[457,728,703,727]" italics="true" pageId="21" pageNumber="189">Eucoelium orientalis</emphasis>
(Kott, 1990)
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</heading>
</paragraph>
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<subSubSection id="C1AE655CFFE6CD571E89FD78E62EFD5B" box="[138,1116,735,759]" pageId="21" pageNumber="189" type="reference_group">
<paragraph id="890B36D7FFE6CD571E89FD78E62EFD5B" blockId="21.[138,1116,703,759]" box="[138,1116,735,759]" pageId="21" pageNumber="189">
<treatmentCitationGroup id="A9A411F9FFE6CD571E89FD78E62EFD5B" box="[138,1116,735,759]" pageId="21" pageNumber="189">
<treatmentCitation id="081510C6FFE6CD571E89FD78E027FD5B" author="Kott P" box="[138,597,735,759]" page="187" pageId="21" pageNumber="189" year="1990">
<taxonomicName id="4EB44D54FFE6CD571E89FD78E027FD5B" ID-CoL="4L4DZ" authority="Kott 1990 a, p 187" authorityName="Kott" authorityPageNumber="187" authorityYear="1990" box="[138,597,735,759]" class="Ascidiacea" family="Polycitoridae" genus="Polycitorella" kingdom="Animalia" order="Aplousobranchia" pageId="21" pageNumber="189" phylum="Chordata" rank="species" species="orientalis">
<emphasis id="BBC0EAC5FFE6CD571E89FD78E304FD5B" box="[138,374,735,759]" italics="true" pageId="21" pageNumber="189">Polycitorella orientalis</emphasis>
<bibRefCitation id="ED254B26FFE6CD571F7CFD78E07AFD5B" author="Kott P" box="[383,520,735,759]" pageId="21" pageNumber="189" pagination="1 - 266" refId="ref28280" refString="Kott P. 1990 a. The Australian Ascidiacea Pt 2, Aplousobranchia (1). Memoirs of the Queensland Museum 29: 1 - 266." type="journal article" year="1990">Kott 1990a</bibRefCitation>
, p 187
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and synonymy; not
<taxonomicName id="4EB44D54FFE6CD571D44FD47E62AFD5B" ID-CoL="4L4DZ" authority=": Kott 2003" authorityName="Kott" authorityYear="2003" box="[839,1112,735,759]" class="Ascidiacea" family="Polycitoridae" genus="Polycitorella" kingdom="Animalia" order="Aplousobranchia" pageId="21" pageNumber="189" phylum="Chordata" rank="species" species="orientalis">
<emphasis id="BBC0EAC5FFE6CD571D44FD47E1B9FD5B" box="[839,971,735,759]" italics="true" pageId="21" pageNumber="189">E. orientalis</emphasis>
:
<bibRefCitation id="ED254B26FFE6CD571DD8FD78E62AFD5B" author="Kott P" box="[987,1112,735,759]" pageId="21" pageNumber="189" pagination="1611 - 1653" refId="ref28482" refString="Kott P. 2003. New syntheses and new species in the Australian Ascidiacea. Journal of Natural History 37: 1611 - 1653." type="journal article" year="2003">Kott 2003</bibRefCitation>
</taxonomicName>
.
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</paragraph>
</subSubSection>
<subSubSection id="C1AE655CFFE6CD571E89FC88E38EFC1B" pageId="21" pageNumber="189" type="distribution">
<paragraph id="890B36D7FFE6CD571E89FC88E379FCEB" blockId="21.[138,267,815,839]" box="[138,267,815,839]" pageId="21" pageNumber="189">
<emphasis id="BBC0EAC5FFE6CD571E89FC88E379FCEB" box="[138,267,815,839]" italics="true" pageId="21" pageNumber="189">Distribution</emphasis>
</paragraph>
<paragraph id="890B36D7FFE6CD571E89FCF8E38EFC1B" blockId="21.[138,1185,863,951]" pageId="21" pageNumber="189">
Previously recorded (see
<bibRefCitation id="ED254B26FFE6CD571FCCFCF8E017FCDB" author="Kott P" box="[463,613,863,887]" pageId="21" pageNumber="189" pagination="1 - 266" refId="ref28280" refString="Kott P. 1990 a. The Australian Ascidiacea Pt 2, Aplousobranchia (1). Memoirs of the Queensland Museum 29: 1 - 266." type="journal article" year="1990">Kott 1990a</bibRefCitation>
):
<collectingRegion id="4B70F835FFE6CD571C87FCF8E12DFCDB" box="[644,863,863,887]" country="Australia" name="Western Australia" pageId="21" pageNumber="189">Western Australia</collectingRegion>
(
<collectorName id="24415301FFE6CD571D79FCF8E677FCDB" box="[890,1029,863,887]" pageId="21" pageNumber="189">Rottnest I.</collectorName>
,
<collectorName id="24415301FFE6CD571A1DFCF8E28BFC3B" pageId="21" pageNumber="189">Houtmans Abrolhos</collectorName>
);
<collectingRegion id="4B70F835FFE6CD571F10FCD8E3EFFC3B" box="[275,413,895,919]" country="Australia" name="Queensland" pageId="21" pageNumber="189">Queensland</collectingRegion>
(
<collectorName id="24415301FFE6CD571FB1FCD8E038FC3B" box="[434,586,895,919]" pageId="21" pageNumber="189">Swain Reefs</collectorName>
,
<collectorName id="24415301FFE6CD571C5FFCD8E0B5FC3B" box="[604,711,895,919]" pageId="21" pageNumber="189">Heron I.</collectorName>
,
<collectorName id="24415301FFE6CD571CD8FCD8E125FC3B" box="[731,855,895,919]" pageId="21" pageNumber="189">Coral Sea</collectorName>
). New records:
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<collectingRegion id="4B70F835FFE6CD571A1CFCD8E29DFC1B" pageId="21" pageNumber="189">Tasmanian Canyons</collectingRegion>
(
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,
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<elevation id="0299D1E4FFE6CD571FA1FC38E39DFC1B" box="[418,495,927,951]" metricMagnitude="2" metricUnit="m" metricValue="1.68" pageId="21" pageNumber="189" unit="m" value="168.0">168 m</elevation>
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).
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</paragraph>
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<subSubSection id="C1AE655CFFE6CD571E89FC48E32FFB7A" pageId="21" pageNumber="189" type="description">
<paragraph id="890B36D7FFE6CD571E89FC48E371FBAB" blockId="21.[138,259,1007,1031]" box="[138,259,1007,1031]" pageId="21" pageNumber="189">
<emphasis id="BBC0EAC5FFE6CD571E89FC48E371FBAB" box="[138,259,1007,1031]" italics="true" pageId="21" pageNumber="189">Description</emphasis>
</paragraph>
<paragraph id="890B36D7FFE6CD571E89FBB8E32FFB7A" blockId="21.[138,1185,1055,1238]" pageId="21" pageNumber="189">
Colonies are dome-shaped to stalked, with a single layer of moderately crowded spicules in the surface over an aspiculate layer of variable thickness. Spicules also are present internally in varying concentrations. Spicules are to
<quantity id="4E4C9B32FFE6CD571C6AFBF9E0A2FBDA" box="[617,720,1118,1142]" metricMagnitude="-5" metricUnit="m" metricValue="5.0" pageId="21" pageNumber="189" unit="mm" value="0.05">0.05 mm</quantity>
diameter with 513 stout conical rays in optical section. Large zooids open around the upper domed surface and converge toward the centre of the base of the colony. They are in a vegetative state, the abdomina breaking up into replicates.
</paragraph>
</subSubSection>
<subSubSection id="C1AE655CFFE6CD541E89FAA9E3AFFE28" lastPageId="22" lastPageNumber="190" pageId="21" pageNumber="189" type="discussion">
<paragraph id="890B36D7FFE6CD571E89FAA9E29BFA8A" blockId="21.[138,233,1294,1318]" box="[138,233,1294,1318]" pageId="21" pageNumber="189">
<emphasis id="BBC0EAC5FFE6CD571E89FAA9E29BFA8A" box="[138,233,1294,1318]" italics="true" pageId="21" pageNumber="189">Remarks</emphasis>
</paragraph>
<paragraph id="890B36D7FFE6CD571E89FA99E1C6F939" blockId="21.[138,1185,1342,1685]" pageId="21" pageNumber="189">
<taxonomicName id="4EB44D54FFE6CD571E89FA99E288FAFA" authorityName="Savigny" authorityYear="1816" box="[138,250,1342,1366]" class="Ascidiacea" family="Polycitoridae" genus="Eucoelium" kingdom="Animalia" order="Aplousobranchia" pageId="21" pageNumber="189" phylum="Chordata" rank="genus">
<emphasis id="BBC0EAC5FFE6CD571E89FA99E288FAFA" box="[138,250,1342,1366]" italics="true" pageId="21" pageNumber="189">Eucoelium</emphasis>
</taxonomicName>
is known, from only eight species, from
<collectingCountry id="F1A37647FFE6CD571CD1FA99E164FAFA" box="[722,790,1342,1366]" name="Japan" pageId="21" pageNumber="189">Japan</collectingCountry>
, the Gulf of Suez and the western Indian Ocean,
<collectingCountry id="F1A37647FFE6CD571F43FAF9E391FADA" box="[320,483,1374,1398]" name="New Zealand" pageId="21" pageNumber="189">New Zealand</collectingCountry>
, and tropical and temperate waters around the Australian continent (where three species are known). The present species has been recorded from the Great Barrier Reef and the Coral Sea, but the present record implies a wider range into temperate waters. All the known species of
<taxonomicName id="4EB44D54FFE6CD571CB6FA19E157FA7A" authorityName="Savigny" authorityYear="1816" box="[693,805,1470,1494]" class="Ascidiacea" family="Polycitoridae" genus="Eucoelium" kingdom="Animalia" order="Aplousobranchia" pageId="21" pageNumber="189" phylum="Chordata" rank="genus">
<emphasis id="BBC0EAC5FFE6CD571CB6FA19E157FA7A" box="[693,805,1470,1494]" italics="true" pageId="21" pageNumber="189">Eucoelium</emphasis>
</taxonomicName>
are very variable, but can be distinguished by their spicules, those of the present species being to
<quantity id="4E4C9B32FFE6CD571D96FA79E189FA5A" box="[917,1019,1502,1526]" metricMagnitude="-5" metricUnit="m" metricValue="5.0" pageId="21" pageNumber="189" unit="mm" value="0.05">0.05 mm</quantity>
diameter with 515 rays.
<taxonomicName id="4EB44D54FFE6CD571F0DFA5AE0B1F9B9" authority="(Michaelsen, 1924)" baseAuthorityName="Michaelsen" baseAuthorityYear="1924" box="[270,707,1533,1557]" class="Ascidiacea" family="Polycitoridae" genus="Eucoelium" kingdom="Animalia" order="Aplousobranchia" pageId="21" pageNumber="189" phylum="Chordata" rank="species" species="mariae">
<emphasis id="BBC0EAC5FFE6CD571F0DFA5AE3A1F9B9" box="[270,467,1533,1557]" italics="true" pageId="21" pageNumber="189">Eucoelium mariae</emphasis>
(
<bibRefCitation id="ED254B26FFE6CD571FE6FA5AE0C9F9B9" author="Michaelsen W" box="[485,699,1533,1557]" pageId="21" pageNumber="189" pagination="263 - 434" refId="ref29008" refString="Michaelsen W. 1924. Ascidiae Krikobranchiae von Neuseeland, den Chatham und den Auckland Inseln. Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening i Kobenhavn 77: 263 - 434." type="journal article" year="1924">Michaelsen, 1924</bibRefCitation>
)
</taxonomicName>
from
<collectingCountry id="F1A37647FFE6CD571D13FA5AE1DCF9B9" box="[784,942,1533,1557]" name="New Zealand" pageId="21" pageNumber="189">New Zealand</collectingCountry>
has smaller spicules than the present species and the principally temperate
<taxonomicName id="4EB44D54FFE6CD571D20F9B9E61DF999" authority="Monniot, 1988" authorityName="Monniot" authorityYear="1988" box="[803,1135,1565,1589]" class="Ascidiacea" family="Polycitoridae" genus="Eucoelium" kingdom="Animalia" order="Aplousobranchia" pageId="21" pageNumber="189" phylum="Chordata" rank="species" species="coronaria">
<emphasis id="BBC0EAC5FFE6CD571D20F9B9E1DCF999" box="[803,942,1565,1589]" italics="true" pageId="21" pageNumber="189">E. coronaria</emphasis>
<bibRefCitation id="ED254B26FFE6CD571DB9F9BAE61DF999" author="Monniot F" box="[954,1135,1565,1589]" pageId="21" pageNumber="189" pagination="197 - 235" refId="ref29364" refString="Monniot F. 1988. Ascidies de Nouvelle Caledonie V. Polycitoridae du lagon. Bulletin du Museum National d'Histoire Naturelle, Paris, Serie 4 10 A: 197 - 235." type="journal article" year="1988">Monniot, 1988</bibRefCitation>
</taxonomicName>
has larger spicules and its zooids are arranged in conspicuous circular systems.
<taxonomicName id="4EB44D54FFE6CD571A32F99AE305F9D9" authority=": Kott 2003" authorityName="Kott" authorityYear="2003" class="Ascidiacea" family="Polycitoridae" genus="Eucoelium" kingdom="Animalia" order="Aplousobranchia" pageId="21" pageNumber="189" phylum="Chordata" rank="species" species="orientalis">
<emphasis id="BBC0EAC5FFE6CD571A32F99AE299F9D9" italics="true" pageId="21" pageNumber="189">Eucoelium orientalis</emphasis>
:
<bibRefCitation id="ED254B26FFE6CD571EFFF9FAE305F9D9" author="Kott P" box="[252,375,1629,1653]" pageId="21" pageNumber="189" pagination="1611 - 1653" refId="ref28482" refString="Kott P. 2003. New syntheses and new species in the Australian Ascidiacea. Journal of Natural History 37: 1611 - 1653." type="journal article" year="2003">Kott 2003</bibRefCitation>
</taxonomicName>
has large (to
<quantity id="4E4C9B32FFE6CD571C1EF9FAE0F1F9D9" box="[541,643,1629,1653]" metricMagnitude="-5" metricUnit="m" metricValue="9.0" pageId="21" pageNumber="189" unit="mm" value="0.09">0.09 mm</quantity>
diameter) globular spicules as well as smaller stellate ones and appears not to be a synonym of the present species.
</paragraph>
<paragraph id="890B36D7FFE5CD541E9BFF2EE2AFFEAE" blockId="22.[125,1173,137,388]" pageId="22" pageNumber="190">
This genus and another polycitorid genus,
<taxonomicName id="4EB44D54FFE5CD541C84FF2EE08AFF0D" authorityName="Drasche" authorityYear="1884" box="[647,760,137,161]" class="Ascidiacea" family="Polycitoridae" genus="Cystodytes" kingdom="Animalia" order="Aplousobranchia" pageId="22" pageNumber="190" phylum="Chordata" rank="genus">
<emphasis id="BBC0EAC5FFE5CD541C84FF2EE08AFF0D" box="[647,760,137,161]" italics="true" pageId="22" pageNumber="190">Cystodytes</emphasis>
</taxonomicName>
, are the only aplousobranch genera outside the
<taxonomicName id="4EB44D54FFE5CD541F00FF0EE3E0FF6D" authorityName="Giard" authorityYear="1872" box="[259,402,169,193]" class="Ascidiacea" family="Didemnidae" kingdom="Animalia" order="Aplousobranchia" pageId="22" pageNumber="190" phylum="Chordata" rank="family">Didemnidae</taxonomicName>
with the capacity to create calcareous spicules in the test. Although the spicules are very similar to those of the
<taxonomicName id="4EB44D54FFE5CD541C75FF6EE17BFF4D" authorityName="Giard" authorityYear="1872" box="[630,777,201,225]" class="Ascidiacea" family="Didemnidae" kingdom="Animalia" order="Aplousobranchia" pageId="22" pageNumber="190" phylum="Chordata" rank="family">Didemnidae</taxonomicName>
, a phylogenetic relationship is not implied.
</paragraph>
<paragraph id="890B36D7FFE5CD541E9BFEACE3AFFE28" blockId="22.[125,1173,137,388]" pageId="22" pageNumber="190">Like other species taken from the Tasmanian Canyons, the new record of the present species from so much further south than it was previously known provides further evidence that the Australian continent may constitutes a route for gene flow of shallow-water tropical species into temperate waters.</paragraph>
</subSubSection>
</treatment>
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