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<document id="668840DB6E9580B12D95DA5364297360" ID-CLB-Dataset="27992" ID-DOI="10.11646/zootaxa.4570.1.1" ID-GBIF-Dataset="66601a1e-ba16-41b2-b182-0fd80e75ccba" ID-ISSN="1175-5326" ID-Zenodo-Dep="2608527" ID-ZooBank="EF369E98-EBD9-4647-B081-65AD1794A27C" IM.bibliography_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1553591750157" checkinUser="plazi" docAuthor="Soto, Joan J. &amp; Peña, Álvaro L." docDate="2019" docId="03B887B7A465FFF9E983FECFFB4A98C4" docLanguage="en" docName="zootaxa.4570.1.1.pdf" docOrigin="Zootaxa 4570 (1)" docStyle="DocumentStyle:5EBBA59367AD13919D70D935FA04F6A3.14:Zootaxa.2013-.monograph" docStyleId="5EBBA59367AD13919D70D935FA04F6A3" docStyleName="Zootaxa.2013-.monograph" docStyleVersion="14" docTitle="Eudendrium antarcticum Stechow 1921" docType="treatment" docVersion="8" lastPageNumber="12" masterDocId="FF81FFCFA46EFFF2E914FFEFFFBB9B7E" masterDocTitle="Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)" masterLastPageNumber="78" masterPageNumber="1" pageNumber="12" updateTime="1698713421926" updateUser="ExternalLinkService">
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<mods:title id="0B0C859861DC794E3BC1DCD9F3C32F18">Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica)</mods:title>
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<mods:namePart id="412CD33873E208CFAE1E9FE184E0E289">Soto, Joan J.</mods:namePart>
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<treatment id="03B887B7A465FFF9E983FECFFB4A98C4" ID-DOI="http://doi.org/10.5281/zenodo.5934883" ID-GBIF-Taxon="154497123" ID-Zenodo-Dep="5934883" LSID="urn:lsid:plazi:treatment:03B887B7A465FFF9E983FECFFB4A98C4" httpUri="http://treatment.plazi.org/id/03B887B7A465FFF9E983FECFFB4A98C4" lastPageNumber="12" pageId="11" pageNumber="12">
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<paragraph id="8BAE36A1A465FFF9E983FECFFD3B9A44" blockId="11.[151,640,288,347]" box="[151,640,288,314]" pageId="11" pageNumber="12">
<heading id="D0E681CDA465FFF9E983FECFFD3B9A44" bold="true" box="[151,640,288,314]" fontSize="11" level="1" pageId="11" pageNumber="12" reason="1">
<taxonomicName id="4C114D22A465FFF9E983FECFFD3B9A44" ID-CoL="3BZH9" authority="Stechow, 1921" authorityName="Stechow" authorityYear="1921" box="[151,640,288,314]" class="Hydrozoa" family="Eudendriidae" genus="Eudendrium" higherTaxonomySource="GBIF" kingdom="Animalia" order="Anthoathecata" pageId="11" pageNumber="12" phylum="Cnidaria" rank="species" species="antarcticum">
<emphasis id="B965EAB3A465FFF9E983FECFFD3B9A44" bold="true" box="[151,640,288,314]" pageId="11" pageNumber="12">
<emphasis id="B965EAB3A465FFF9E983FECFFE719A44" bold="true" box="[151,458,288,314]" italics="true" pageId="11" pageNumber="12">Eudendrium antarcticum</emphasis>
<bibRefCitation id="EF804B50A465FFF9E8C5FECFFD3B9A44" author="Stechow E" box="[465,640,288,314]" pageId="11" pageNumber="12" pagination="223 - 236" refId="ref46954" refString="Stechow E (1921) Uber Hydroiden der Deutschen Tiefsee-Expedition, nebst Bemerkungen uber einige andre Formen. Zoologischer Anzeiger, 53, 223 - 236." type="journal article" year="1921">Stechow, 1921</bibRefCitation>
</emphasis>
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</paragraph>
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<subSubSection id="C30B652AA465FFF9E983FEADFF429A25" box="[151,249,322,347]" pageId="11" pageNumber="12" type="description">
<paragraph id="8BAE36A1A465FFF9E983FEADFF429A25" blockId="11.[151,640,288,347]" box="[151,249,322,347]" pageId="11" pageNumber="12">
(
<figureCitation id="132A2A24A465FFF9E98BFEADFF4B9A25" box="[159,240,322,347]" captionStart="FIGURE 3" captionStartId="12.[151,250,1414,1436]" captionTargetBox="[161,1423,205,1385]" captionTargetId="figure@12.[150,1436,195,1393]" captionTargetPageId="12" captionText="FIGURE 3. af Hydractinia dendritica: ab general view of the colony; c detail of spines; d gastrozooids and dactylozooid (arrow); e gonozooid with gonophores; f dactylozooid (arrow). g Eudendrium antarcticum: female gonophore. h Eudendrium generale: female gonophore. i, k Eudendrium scotti: i gonozooid with male gonophores; k colony. j Eudendrium sp.2: gonozooid with male gonophores." httpUri="https://zenodo.org/record/2608533/files/figure.png" pageId="11" pageNumber="12">
Fig.
<quantity id="4CE99B44A465FFF9E9C0FEACFF4B9A25" box="[212,240,323,347]" metricMagnitude="-3" metricUnit="kg" metricValue="3.0" pageId="11" pageNumber="12" unit="g" value="3.0">3g</quantity>
</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="C30B652AA465FFF9E983FE6AFE499974" pageId="11" pageNumber="12" type="materials_examined">
<paragraph id="8BAE36A1A465FFF9E983FE6AFE499974" blockId="11.[151,1437,389,954]" pageId="11" pageNumber="12">
<emphasis id="B965EAB3A465FFF9E983FE6AFE399AE0" bold="true" box="[151,386,389,414]" pageId="11" pageNumber="12">Material examined.</emphasis>
<emphasis id="B965EAB3A465FFF9E89EFE69FE459AE0" box="[394,510,390,414]" italics="true" pageId="11" pageNumber="12">ANT XV/3</emphasis>
:
<emphasis id="B965EAB3A465FFF9EB1BFE6AFDEB9AE0" bold="true" box="[527,592,389,414]" pageId="11" pageNumber="12">48-31</emphasis>
, one colony, c.
<quantity id="4CE99B44A465FFF9EA13FE6AFCE39AE3" box="[775,856,389,414]" metricMagnitude="-2" metricUnit="m" metricValue="1.5" pageId="11" pageNumber="12" unit="mm" value="15.0">15 mm</quantity>
high, on
<taxonomicName id="4C114D22A465FFF9EAD2FE69FBDE9AE3" authorityName="Pena Cantero &amp; Vervoort" authorityYear="1996" box="[966,1125,390,413]" class="Hydrozoa" family="Kirchenpaueriidae" genus="Oswaldella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Leptothecata" pageId="11" pageNumber="12" phylum="Cnidaria" rank="species" species="terranovae">
<emphasis id="B965EAB3A465FFF9EAD2FE69FBDE9AE3" box="[966,1125,390,413]" italics="true" pageId="11" pageNumber="12">O. terranovae</emphasis>
</taxonomicName>
and
<emphasis id="B965EAB3A465FFF9ED8AFE6AFAB79AE0" box="[1182,1292,389,414]" italics="true" pageId="11" pageNumber="12">Tubularia</emphasis>
sp.1;
<emphasis id="B965EAB3A465FFF9EC40FE6AFA2E9AE0" bold="true" box="[1364,1429,389,414]" pageId="11" pageNumber="12">48-77</emphasis>
, one colony, c.
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high, with female gonophores;
<emphasis id="B965EAB3A465FFF9EBECFE46FCFC9ABC" bold="true" box="[760,839,425,450]" pageId="11" pageNumber="12">48-197</emphasis>
, one colony, c.
<quantity id="4CE99B44A465FFF9EAE9FE46FBF69ABF" box="[1021,1101,425,450]" metricMagnitude="-2" metricUnit="m" metricValue="5.0" pageId="11" pageNumber="12" unit="mm" value="50.0">50 mm</quantity>
high;
<emphasis id="B965EAB3A465FFF9ED83FE46FB5C9ABC" bold="true" box="[1175,1255,425,450]" pageId="11" pageNumber="12">48-276</emphasis>
, one colony,
<quantity id="4CE99B44A465FFF9EC94FE46FF789A9B" metricMagnitude="-2" metricUnit="m" metricValue="2.0" pageId="11" pageNumber="12" unit="mm" value="20.0">20 mm</quantity>
high, on
<taxonomicName id="4C114D22A465FFF9E825FE21FE1C9A98" baseAuthorityName="Jaderholm" baseAuthorityYear="1904" box="[305,423,461,486]" class="Hydrozoa" family="Lafoeidae" genus="Billardia" higherTaxonomySource="GBIF" kingdom="Animalia" order="Leptothecata" pageId="11" pageNumber="12" phylum="Cnidaria" rank="species" species="subrufa">
<emphasis id="B965EAB3A465FFF9E825FE21FE1C9A98" box="[305,423,461,486]" italics="true" pageId="11" pageNumber="12">B. subrufa</emphasis>
</taxonomicName>
;
<emphasis id="B965EAB3A465FFF9E8ACFE21FD849A98" box="[440,575,462,486]" italics="true" pageId="11" pageNumber="12">ANT XVII/3</emphasis>
:
<emphasis id="B965EAB3A465FFF9EB5BFE22FD209A98" bold="true" box="[591,667,461,486]" pageId="11" pageNumber="12">111-19</emphasis>
, one colony, c.
<quantity id="4CE99B44A465FFF9EA47FE21FC2D9A9B" box="[851,918,462,486]" metricMagnitude="-3" metricUnit="m" metricValue="4.0" pageId="11" pageNumber="12" unit="mm" value="4.0">4 mm</quantity>
high, on
<taxonomicName id="4C114D22A465FFF9ED10FE21FB029A98" authorityName="Ritchie" authorityYear="1907" box="[1028,1209,461,486]" class="Hydrozoa" family="Haleciidae" genus="Halecium" higherTaxonomySource="GBIF" kingdom="Animalia" order="Leptothecata" pageId="11" pageNumber="12" phylum="Cnidaria" rank="species" species="interpolatum">
<emphasis id="B965EAB3A465FFF9ED10FE21FB029A98" box="[1028,1209,461,486]" italics="true" pageId="11" pageNumber="12">H. interpolatum</emphasis>
</taxonomicName>
;
<emphasis id="B965EAB3A465FFF9EDDDFE21FAFC9A98" box="[1225,1351,462,486]" italics="true" pageId="11" pageNumber="12">ANT XXI/2</emphasis>
:
<emphasis id="B965EAB3A465FFF9EC43FE22FF7A9974" bold="true" pageId="11" pageNumber="12">PS65/ 292</emphasis>
, one colony, c.
<quantity id="4CE99B44A465FFF9E865FE1DFE099977" box="[369,434,498,521]" metricMagnitude="-3" metricUnit="m" metricValue="7.0" pageId="11" pageNumber="12" unit="mm" value="7.0">7 mm</quantity>
high.
</paragraph>
</subSubSection>
<subSubSection id="C30B652AA465FFF9E9D3FDFAFDA29878" pageId="11" pageNumber="12" type="discussion">
<paragraph id="8BAE36A1A465FFF9E9D3FDFAFDA29878" blockId="11.[151,1437,389,954]" pageId="11" pageNumber="12">
<emphasis id="B965EAB3A465FFF9E9D3FDFAFE809950" bold="true" box="[199,315,533,558]" pageId="11" pageNumber="12">Remarks.</emphasis>
Non-reproductive material was attributed based on the cnidome, consisting of microbasic euryteles of only one size category [range 7.08.0 x 1.52.5 µm, mean 7.8±0.3 x 2.3±0.3 µm (n=23)], in agreement with previous material examined by
<bibRefCitation id="EF804B50A465FFF9E8EAFDB1FC809908" author="Pena Cantero, A. L. &amp; Gili, J. M." box="[510,827,605,630]" pageId="11" pageNumber="12" pagination="764 - 771" refId="ref44997" refString="Pena Cantero, A. L. &amp; Gili, J. M. (2006) Benthic hydroids (Cnidaria, Hydrozoa) from off Bouvet Island (Antarctic Ocean). Polar Biology, 29, 764 - 771. https: // doi. org / 10.1007 / s 00300 - 006 - 0113 - x" type="journal article" year="2006">Peña Cantero &amp; Gili (2006)</bibRefCitation>
and
<bibRefCitation id="EF804B50A465FFF9EA67FDB1FB519908" author="Pena Cantero, A. L. &amp; Vervoort, W." box="[883,1258,606,630]" pageId="11" pageNumber="12" pagination="83 - 92" refId="ref46085" refString="Pena Cantero, A. L. &amp; Vervoort, W. (2009) Benthic hydroids (Cnidaria: Hydrozoa) from the Bransfield Strait area (Antarctica) collected by Brazilian expeditions, with the description of a new species. Polar Biology, 32, 83 - 92. https: // doi. org / 10.1007 / s 00300 - 008 - 0506 - 0" type="journal article" year="2009">Peña Cantero &amp; Vervoort (2009)</bibRefCitation>
. In the material examined here, unlike previous reports of the species (e.g.
<bibRefCitation id="EF804B50A465FFF9EA50FD6DFBBE99E4" author="Puce, S. &amp; Cerrano, C. &amp; Bavestrello, G." box="[836,1029,641,666]" pageId="11" pageNumber="12" pagination="366 - 373" refId="ref46220" refString="Puce, S., Cerrano, C. &amp; Bavestrello, G. (2002) Eudendrium (Cnidaria, Anthomedusae) from the Antarctic Ocean with description of two new species. Polar Biology, 25, 366 - 373. https: // doi. org / 10.1007 / s 00300 - 001 - 0353 - 8" type="journal article" year="2002">
Puce
<emphasis id="B965EAB3A465FFF9EA90FD6DFC7B99E4" box="[900,960,641,666]" italics="true" pageId="11" pageNumber="12">et al.</emphasis>
2002
</bibRefCitation>
), the female gonophores originated from partially atrophied hydranths with a reduced number of tentacles (
<figureCitation id="132A2A24A465FFF9EACDFD4AFB9499C0" box="[985,1071,677,702]" captionStart="FIGURE 3" captionStartId="12.[151,250,1414,1436]" captionTargetBox="[161,1423,205,1385]" captionTargetId="figure@12.[150,1436,195,1393]" captionTargetPageId="12" captionText="FIGURE 3. af Hydractinia dendritica: ab general view of the colony; c detail of spines; d gastrozooids and dactylozooid (arrow); e gonozooid with gonophores; f dactylozooid (arrow). g Eudendrium antarcticum: female gonophore. h Eudendrium generale: female gonophore. i, k Eudendrium scotti: i gonozooid with male gonophores; k colony. j Eudendrium sp.2: gonozooid with male gonophores." httpUri="https://zenodo.org/record/2608533/files/figure.png" pageId="11" pageNumber="12">
Fig.
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), probably due to the complete maturation of the gonozooid, as known to occur in other species of the genus, a process known as reproductive exhaustion (see
<bibRefCitation id="EF804B50A465FFF9E85FFD02FDB69878" author="Schuchert, P." box="[331,525,749,774]" pageId="11" pageNumber="12" pagination="677 - 757" refId="ref46646" refString="Schuchert, P. (2008 b) The European athecate hydroids and their medusae (Hydrozoa, Cnidaria): Filifera part 4. Revue Suisse De Zoologie, 115, 677 - 757. https: // doi. org / 10.5962 / bhl. part. 80453" type="journal article" year="2008">Schuchert 2008b</bibRefCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="C30B652AA465FFF9E9D3FCFEFB4A98C4" pageId="11" pageNumber="12" type="biology_ecology">
<paragraph id="8BAE36A1A465FFF9E9D3FCFEFB4A98C4" blockId="11.[151,1437,389,954]" pageId="11" pageNumber="12">
<emphasis id="B965EAB3A465FFF9E9D3FCFEFE4C9854" bold="true" box="[199,503,785,810]" pageId="11" pageNumber="12">Ecology and distribution.</emphasis>
In Antarctic waters, the species is known from depths between 240 (
<bibRefCitation id="EF804B50A465FFF9EC17FCFDFEE29830" author="Pena Cantero, A. L. &amp; Vervoort, W." pageId="11" pageNumber="12" pagination="83 - 92" refId="ref46085" refString="Pena Cantero, A. L. &amp; Vervoort, W. (2009) Benthic hydroids (Cnidaria: Hydrozoa) from the Bransfield Strait area (Antarctica) collected by Brazilian expeditions, with the description of a new species. Polar Biology, 32, 83 - 92. https: // doi. org / 10.1007 / s 00300 - 008 - 0506 - 0" type="journal article" year="2009">Peña Cantero &amp; Vervoort 2009</bibRefCitation>
) and
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(
<bibRefCitation id="EF804B50A465FFF9E8E5FCD9FC9A9830" author="Pena Cantero, A. L. &amp; Gili, J. M." box="[497,801,821,846]" pageId="11" pageNumber="12" pagination="764 - 771" refId="ref44997" refString="Pena Cantero, A. L. &amp; Gili, J. M. (2006) Benthic hydroids (Cnidaria, Hydrozoa) from off Bouvet Island (Antarctic Ocean). Polar Biology, 29, 764 - 771. https: // doi. org / 10.1007 / s 00300 - 006 - 0113 - x" type="journal article" year="2006">Peña Cantero &amp; Gili 2006</bibRefCitation>
); material examined collected at depths between 64 and
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, considerably extending its bathymetric range. Species previously reported from off
<collectingCountry id="F3067631A465FFF9EDB0FCB6FA83980C" box="[1188,1336,857,882]" name="South Africa" pageId="11" pageNumber="12">South Africa</collectingCountry>
, Bouvet, the Bransfield Strait area and doubtfully from Peter I
<collectingCountry id="F3067631A465FFF9EA11FC92FCF298E8" box="[773,841,893,918]" name="Iceland" pageId="11" pageNumber="12">Island</collectingCountry>
[cf.
<bibRefCitation id="EF804B50A465FFF9EA97FC91FB4098E8" author="Pena Cantero, A. L. &amp; Vervoort, W." box="[899,1275,894,918]" pageId="11" pageNumber="12" pagination="83 - 92" refId="ref46085" refString="Pena Cantero, A. L. &amp; Vervoort, W. (2009) Benthic hydroids (Cnidaria: Hydrozoa) from the Bransfield Strait area (Antarctica) collected by Brazilian expeditions, with the description of a new species. Polar Biology, 32, 83 - 92. https: // doi. org / 10.1007 / s 00300 - 008 - 0506 - 0" type="journal article" year="2009">Peña Cantero &amp; Vervoort (2009)</bibRefCitation>
and literature therein]. Present contribution constitutes the first evidence of
<taxonomicName id="4C114D22A465FFF9EA5EFC4DFC5498C7" authorityName="Stechow" authorityYear="1921" box="[842,1007,930,953]" class="Hydrozoa" family="Eudendriidae" genus="Eudendrium" higherTaxonomySource="GBIF" kingdom="Animalia" order="Anthoathecata" pageId="11" pageNumber="12" phylum="Cnidaria" rank="species" species="antarcticum">
<emphasis id="B965EAB3A465FFF9EA5EFC4DFC5498C7" box="[842,1007,930,953]" italics="true" pageId="11" pageNumber="12">E. antarcticum</emphasis>
</taxonomicName>
from the Weddell Sea.
</paragraph>
</subSubSection>
</treatment>
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