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<document id="349467DDF41D742AA9BC4006769209D8" ID-DOI="10.24199/j.mmv.2003.60.18" ID-ISSN="1447-2554" ID-Zenodo-Dep="12207807" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" IM.treatmentCitations_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1718988095639" checkinUser="felipe" docAuthor="Watson, Jeanette W." docDate="2003" docId="039F8846FFDCFF8928FFFDA6FC20FE7B" docLanguage="en" docName="MemMusVictoria.60.2.151-180.pdf" docOrigin="Memoirs of Museum Victoria 60 (2)" docSource="https://museumsvictoria.com.au/collections-research/journals/memoirs-of-museum-victoria/volume-60-issue-2-2003/pages-151-180/" docStyle="DocumentStyle:5B3B5C052A93BFEEE334AD6097A94E45.2:MemMusVictoria.2003-.journal_article.type1" docStyleId="5B3B5C052A93BFEEE334AD6097A94E45" docStyleName="MemMusVictoria.2003-.journal_article.type1" docStyleVersion="2" docTitle="Halecium ovatum Totton 1930" docType="treatment" docVersion="2" lastPageNumber="166" masterDocId="FFA6F03EFFD3FF86287CFFE9FFD0FF9A" masterDocTitle="Deep-water hydroids (Hydrozoa: Leptolida) from Macquarie Island" masterLastPageNumber="180" masterPageNumber="151" pageNumber="166" updateTime="1718989093353" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-4.0">
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<mods:title id="42C5D71DEB9ACA64A5CAFC85E8F3F972">Deep-water hydroids (Hydrozoa: Leptolida) from Macquarie Island</mods:title>
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<treatment id="039F8846FFDCFF8928FFFDA6FC20FE7B" LSID="urn:lsid:plazi:treatment:039F8846FFDCFF8928FFFDA6FC20FE7B" httpUri="http://treatment.plazi.org/id/039F8846FFDCFF8928FFFDA6FC20FE7B" lastPageNumber="166" pageId="15" pageNumber="166">
<subSubSection id="C32C6ADBFFDCFF8928FFFDA6FE56FDFF" box="[131,390,591,613]" pageId="15" pageNumber="166" type="nomenclature">
<paragraph id="8B893950FFDCFF8928FFFDA6FE56FDFF" blockId="15.[131,390,591,613]" box="[131,390,591,613]" pageId="15" pageNumber="166">
<heading id="D0C18E3CFFDCFF8928FFFDA6FE56FDFF" box="[131,390,591,613]" fontSize="9" level="2" pageId="15" pageNumber="166" reason="5">
<taxonomicName id="4C3642D3FFDCFF8928FFFDA6FE56FDFF" ID-CoL="3JB5X" authority="Totton" authorityName="Totton" authorityYear="1930" box="[131,390,591,613]" class="Hydrozoa" family="Haleciidae" genus="Halecium" kingdom="Animalia" order="Leptothecata" pageId="15" pageNumber="166" phylum="Cnidaria" rank="species" species="ovatum">
<emphasis id="B942E542FFDCFF8928FFFDA6FEEEFDFF" bold="true" box="[131,318,591,613]" italics="true" pageId="15" pageNumber="166">Halecium ovatum</emphasis>
Totton
</taxonomicName>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C32C6ADBFFDCFF8928FFFD92FF2AFD0B" box="[131,250,635,657]" pageId="15" pageNumber="166" type="description">
<paragraph id="8B893950FFDCFF8928FFFD92FF2AFD0B" blockId="15.[131,772,635,859]" box="[131,250,635,657]" pageId="15" pageNumber="166">
<figureCitation id="130D25D5FFDCFF8928FFFD92FF2AFD0B" box="[131,250,635,657]" captionStart="Figures 15" captionStartId="14.[820,888,1760,1780]" captionTargetBox="[823,1455,875,1734]" captionTargetId="figure-622@14.[817,1460,861,1738]" captionTargetPageId="14" captionText="Figures 15AE. AC, Halecium tenellum, stn 120. A, single stem from colony. B, linear series of hydrophores. C, hydrophores and hydrothecae with outrolled rims. DE. Halecium ovatum, stn 120. D, linear series of hydrophores. E, secondary hydrophore given off below primary. Scale bar: A, 1 mm; B, 0.25 mm; C, 0.1 mm; D, E, 0.5 mm." figureDoi="http://doi.org/10.5281/zenodo.12207843" httpUri="https://zenodo.org/record/12207843/files/figure.png" pageId="15" pageNumber="166">Fig. 15D, E</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="C32C6ADBFFDCFF8928E2FD76FE85FC87" pageId="15" pageNumber="166" type="reference_group">
<paragraph id="8B893950FFDCFF8928E2FD76FE85FC87" blockId="15.[131,772,635,859]" pageId="15" pageNumber="166">
<treatmentCitationGroup id="AB261E7EFFDCFF8928E2FD76FE85FC87" pageId="15" pageNumber="166">
<treatmentCitation id="0A971F41FFDCFF8928E2FD76FE37FD29" author="Totton, A. K." box="[158,487,671,691]" page="143" pageId="15" pageNumber="166" year="1930">
<taxonomicName id="4C3642D3FFDCFF8928E2FD76FE37FD29" ID-CoL="3JB5X" authority="Totton, 1930: 143" authorityName="Totton" authorityPageNumber="143" authorityYear="1930" box="[158,487,671,691]" class="Hydrozoa" family="Haleciidae" genus="Halecium" kingdom="Animalia" order="Leptothecata" pageId="15" pageNumber="166" phylum="Cnidaria" rank="species" species="ovatum">
<emphasis id="B942E542FFDCFF8928E2FD76FEEEFD29" box="[158,318,671,691]" italics="true" pageId="15" pageNumber="166">Halecium ovatum</emphasis>
<bibRefCitation id="EFA744A1FFDCFF89293FFD76FE37FD29" author="Totton, A. K." box="[323,487,671,691]" pageId="15" pageNumber="166" pagination="131 - 252" refId="ref28963" refString="Totton, A. K. 1930. Coelenterata. Part V. - Hydroida. British Antarctic (&quot; Terra Nova &quot;) Expedition, 1910, Natural History Report, Zoology 5: 131 - 252." type="journal article" year="1930">Totton, 1930: 143</bibRefCitation>
</taxonomicName>
</treatmentCitation>
, fig. 3.—
<treatmentCitation id="0A971F41FFDCFF892A44FD76FD2FFD29" author="Vervoort, W." box="[568,767,671,691]" page="339" pageId="15" pageNumber="166" year="1972">
<bibRefCitation id="EFA744A1FFDCFF892A44FD76FD2FFD29" author="Vervoort, W." box="[568,767,671,691]" pageId="15" pageNumber="166" pagination="337 - 357" refId="ref29339" refString="Vervoort, W. 1972 b. Hydroids from submarine cliffs near Arthur Harbour, Palmer Archipelago, Antarctica. Zoologische Mededelingen, Leiden 47: 337 - 357." type="journal article" year="1972">Vervoort, 1972b: 339</bibRefCitation>
</treatmentCitation>
, fig. 1.—
<treatmentCitation id="0A971F41FFDCFF8928ACFD50FE63FD57" author="Stepanjants, S. D." box="[208,435,697,717]" page="103" pageId="15" pageNumber="166" year="1979">
<bibRefCitation id="EFA744A1FFDCFF8928ACFD50FE63FD57" author="Stepanjants, S. D." box="[208,435,697,717]" pageId="15" pageNumber="166" pagination="1 - 99" refId="ref28695" refString="Stepanjants, S. D. 1979. Gidroidy vod antarktiki i subantarktiki. Rezul'taty biologicheskikh issledovanii sovetskikh antarkticheskikh ekspeditsii, 6. Issledovaniya Fauny Morei 22: 1 - 99 (in Russian)." type="journal article" year="1979">Stepanjants, 1979: 103</bibRefCitation>
</treatmentCitation>
, pl. 20 figs 1ag.—
<treatmentCitation id="0A971F41FFDCFF892A06FD50FF0AFD72" author="Pena Cantero, A. L." page="48" pageId="15" pageNumber="166" year="1991">
<bibRefCitation id="EFA744A1FFDCFF892A06FD50FF0AFD72" author="Pena Cantero, A. L." pageId="15" pageNumber="166" refId="ref27016" refString="Pena Cantero, A. L. 1991. Hydrozoa Calyptoblastea del area del Arco de Escocia (Antarctica) recogidos durante la campana ' Antaritida 8611 '. Tesis de Licenenciatura, Univerisity of Valencia. 233 pp." type="book" year="1991">Peña Cantero, 1991: 48</bibRefCitation>
</treatmentCitation>
, pl. 2 figs g, h.—Blanco, 1994: 156.—
<treatmentCitation id="0A971F41FFDCFF892A24FD3DFE5DFC99" author="Pena Cantero, A. L. &amp; Garcia Carrascosa, A. M." page="12" pageId="15" pageNumber="166" year="1995">
<bibRefCitation id="EFA744A1FFDCFF892A24FD3DFE5DFC99" author="Pena Cantero, A. L. &amp; Garcia Carrascosa, A. M." pageId="15" pageNumber="166" pagination="1 - 147" refId="ref27056" refString="Pena Cantero, A. L., and Garcia Carrascosa, A. M. 1995. Hidrozoos bentonicos de la campana Antartida 8611. Instituto Espanol de Oceanografia. Publicaciones Especiales 19: 1 - 147." type="journal article" year="1995">Peña Cantero and García Carrascosa, 1995: 12</bibRefCitation>
</treatmentCitation>
, figs 2G, H.—
<treatmentCitation id="0A971F41FFDCFF892A64FD06FE81FC87" author="Pena Cantero, A. L. &amp; Garcia Carrascosa, A. M." page="212" pageId="15" pageNumber="166" year="1999">
<bibRefCitation id="EFA744A1FFDCFF892A64FD06FE81FC87" author="Pena Cantero, A. L. &amp; Garcia Carrascosa, A. M." pageId="15" pageNumber="166" pagination="209 - 218" refId="ref27095" refString="Pena Cantero, A. L., and Garcia Carrascosa, A. M. 1999. Biogeographical distribution of the benthic thecate hydroids collected during the Spanish ' Antartida 8611 ' expedition and comparison between Antarctic and Magellan benthic hydroid faunas. Scientia Marina 63: 209 - 218." type="journal article" year="1999">Peña Cantero and García Carrascosa, 1999: 212</bibRefCitation>
</treatmentCitation>
.
</treatmentCitationGroup>
</paragraph>
</subSubSection>
<subSubSection id="C32C6ADBFFDCFF8928FFFCC5FC20FE7B" pageId="15" pageNumber="166" type="materials_examined">
<paragraph id="8B893950FFDCFF8928FFFCC5FD1BFCC0" blockId="15.[131,772,635,859]" pageId="15" pageNumber="166">
<emphasis id="B942E542FFDCFF8928FFFCC5FEE7FCDA" box="[131,311,812,832]" italics="true" pageId="15" pageNumber="166">Material examined.</emphasis>
Stn 120,
<collectionCode id="ED27A195FFDCFF8929ECFCC5FE62FCDA" box="[400,434,812,832]" country="Germany" name="Teylers Museum, Paleontologische" pageId="15" pageNumber="166">TM</collectionCode>
K2780,
<collectionCode id="ED27A195FFDCFF892A78FCC5FDE9FCDA" box="[516,569,812,832]" country="Australia" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34978" lsid="urn:lsid:biocol.org:col:34978" name="Museum Victoria" pageId="15" pageNumber="166" type="Museum">NMV</collectionCode>
F91321, sparse infertile colonies on
<taxonomicName id="4C3642D3FFDCFF892969FCAEFE69FCC1" authorityName="Watson and Vervoort" authorityYear="2001" box="[277,441,839,859]" class="Hydrozoa" family="Haleciidae" genus="Halecium" kingdom="Animalia" order="Leptothecata" pageId="15" pageNumber="166" phylum="Cnidaria" rank="species" species="ralphae">
<emphasis id="B942E542FFDCFF892969FCAEFE69FCC1" box="[277,441,839,859]" italics="true" pageId="15" pageNumber="166">Halecium ralphae</emphasis>
</taxonomicName>
, specimen alcohol-preserved.
</paragraph>
<paragraph id="8B893950FFDCFF8928FFFC98FE3DFC66" blockId="15.[131,771,881,1609]" pageId="15" pageNumber="166">
<emphasis id="B942E542FFDCFF8928FFFC98FED2FC1D" box="[131,258,881,903]" italics="true" pageId="15" pageNumber="166">Description.</emphasis>
Colony minute, stolonal; stolons tubular, walls crumpled, thin. Primary hydrophore seated on a short apophysis of the stolon, a transverse to weakly oblique node at base; hydrophore relatively long, cylindrical, smooth, gradually expanding to hydrotheca.
</paragraph>
<paragraph id="8B893950FFDCFF8928DFFBEAFD31FB7D" blockId="15.[131,771,881,1609]" pageId="15" pageNumber="166">Secondary and tertiary hydrophores arising in a series without basal node from diaphragm of preceding hydrotheca; successive hydrophores progressively shorter. Branching of hydrophore at right angles from below a hydrotheca common, secondary hydrophores shorter, with 2 or 3 partial basal constrictions. Hydrotheca shallow, expanding smoothly from well marked diaphragm to wide margin with strongly recurved and outrolled rim, a clear ring of desmocytes above diaphragm.</paragraph>
<paragraph id="8B893950FFDCFF8928DFFB07FE12FABB" blockId="15.[131,771,881,1609]" pageId="15" pageNumber="166">Perisarc of hydrorhiza very thin, that of hydrophores thicker, rim of hydrotheca thin.</paragraph>
<paragraph id="8B893950FFDCFF8928DFFAC0FEB9FAA5" blockId="15.[131,771,881,1609]" box="[163,361,1321,1343]" pageId="15" pageNumber="166">
<emphasis id="B942E542FFDCFF8928DFFAC0FF3FFAA5" box="[163,239,1321,1343]" italics="true" pageId="15" pageNumber="166">Colour.</emphasis>
Colourless.
</paragraph>
<paragraph id="8B893950FFDCFF8928E2FAACFE85FAC3" blockId="15.[131,771,881,1609]" box="[158,341,1349,1369]" pageId="15" pageNumber="166">
<emphasis id="B942E542FFDCFF8928E2FAACFEF1FAC3" box="[158,289,1349,1369]" italics="true" pageId="15" pageNumber="166">Measurements</emphasis>
(µm)
</paragraph>
<paragraph id="8B893950FFDCFF8928FFFA89FD2BFA5E" blockId="15.[131,771,881,1609]" pageId="15" pageNumber="166">Hydrorhiza width of stolon 80104 Hydrophore length of primary, proximal node to diaphragm 120496</paragraph>
<paragraph id="8B893950FFDCFF8928E2FA23FD2CFA44" blockId="15.[131,771,881,1609]" box="[158,764,1482,1502]" pageId="15" pageNumber="166">width, primary proximal node 5962</paragraph>
<paragraph id="8B893950FFDCFF8928E2FA0CFD2BFA63" blockId="15.[131,771,881,1609]" box="[158,763,1509,1529]" pageId="15" pageNumber="166">length of succeeding hydrophores 142316</paragraph>
<paragraph id="8B893950FFDCFF8928E2F9E9FD2BF98E" blockId="15.[131,771,881,1609]" box="[158,763,1536,1556]" pageId="15" pageNumber="166">diameter at diaphragm 120136</paragraph>
<paragraph id="8B893950FFDCFF8928E2F9F3FD2BF9B4" blockId="15.[131,771,881,1609]" box="[158,763,1562,1582]" pageId="15" pageNumber="166">depth, margin to diaphragm 3244</paragraph>
<paragraph id="8B893950FFDCFF8928E2F9DCFD2BF9D3" blockId="15.[131,771,881,1609]" box="[158,763,1589,1609]" pageId="15" pageNumber="166">diameter, marginal rim 176208</paragraph>
<paragraph id="8B893950FFDCFF8928FFF9B6FE5CF909" blockId="15.[131,771,1631,1683]" pageId="15" pageNumber="166">
<emphasis id="B942E542FFDCFF8928FFF9B6FED6F9EF" box="[131,262,1631,1653]" italics="true" pageId="15" pageNumber="166">Distribution.</emphasis>
Antarctic (
<bibRefCitation id="EFA744A1FFDCFF892901F9B6FDEAF9EF" author="Stepanjants, S. D." box="[381,570,1631,1653]" pageId="15" pageNumber="166" pagination="1 - 99" refId="ref28695" refString="Stepanjants, S. D. 1979. Gidroidy vod antarktiki i subantarktiki. Rezul'taty biologicheskikh issledovanii sovetskikh antarkticheskikh ekspeditsii, 6. Issledovaniya Fauny Morei 22: 1 - 99 (in Russian)." type="journal article" year="1979">Stepanjants, 1979</bibRefCitation>
;
<bibRefCitation id="EFA744A1FFDCFF892A34F9B6FE51F909" author="Pena Cantero, A. L. &amp; Garcia Carrascosa, A. M." pageId="15" pageNumber="166" pagination="209 - 218" refId="ref27095" refString="Pena Cantero, A. L., and Garcia Carrascosa, A. M. 1999. Biogeographical distribution of the benthic thecate hydroids collected during the Spanish ' Antartida 8611 ' expedition and comparison between Antarctic and Magellan benthic hydroid faunas. Scientia Marina 63: 209 - 218." type="journal article" year="1999">Peña Cantero and García Carrascosa, 1999</bibRefCitation>
).
</paragraph>
<paragraph id="8B893950FFDCFF8928FFF940FE3BF8F5" blockId="15.[131,771,1705,1903]" pageId="15" pageNumber="166">
<emphasis id="B942E542FFDCFF8928FFF940FF33F925" box="[131,227,1705,1727]" italics="true" pageId="15" pageNumber="166">Remarks.</emphasis>
The species is similar to
<taxonomicName id="4C3642D3FFDCFF8929A2F940FD4DF925" authorityName="Hincks" authorityYear="1861" box="[478,669,1705,1727]" class="Hydrozoa" family="Haleciidae" genus="Halecium" kingdom="Animalia" order="Leptothecata" pageId="15" pageNumber="166" phylum="Cnidaria" rank="species" species="tenellum">
<emphasis id="B942E542FFDCFF8929A2F940FD4DF925" box="[478,669,1705,1727]" italics="true" pageId="15" pageNumber="166">Halecium tenellum</emphasis>
</taxonomicName>
for which it was originally mistaken in samples from Stn. 120. In size and habit of colony the present specimens most resemble
<taxonomicName id="4C3642D3FFDCFF892ADDF90AFEB6F88D" authority="Totton, 1930" authorityName="Totton" authorityYear="1930" class="Hydrozoa" family="Haleciidae" genus="Halecium" kingdom="Animalia" order="Leptothecata" pageId="15" pageNumber="166" phylum="Cnidaria" rank="species" species="ovatum">
<emphasis id="B942E542FFDCFF892ADDF90AFF1DF88D" italics="true" pageId="15" pageNumber="166">Halecium ovatum</emphasis>
<bibRefCitation id="EFA744A1FFDCFF8928A0F8E8FEB6F88D" author="Totton, A. K." box="[220,358,1793,1815]" pageId="15" pageNumber="166" pagination="131 - 252" refId="ref28963" refString="Totton, A. K. 1930. Coelenterata. Part V. - Hydroida. British Antarctic (&quot; Terra Nova &quot;) Expedition, 1910, Natural History Report, Zoology 5: 131 - 252." type="journal article" year="1930">Totton, 1930</bibRefCitation>
</taxonomicName>
redescribed and figured by
<bibRefCitation id="EFA744A1FFDCFF892AD6F8E8FF07F8AE" author="Vervoort, W." pageId="15" pageNumber="166" pagination="337 - 357" refId="ref29339" refString="Vervoort, W. 1972 b. Hydroids from submarine cliffs near Arthur Harbour, Palmer Archipelago, Antarctica. Zoologische Mededelingen, Leiden 47: 337 - 357." type="journal article" year="1972">Vervoort (1972b)</bibRefCitation>
. Although the hydrotheca is narrower and shallower than that of
<taxonomicName id="4C3642D3FFDCFF892969F8D2FE56F8CB" authorityName="Totton" authorityYear="1930" box="[277,390,1851,1873]" class="Hydrozoa" family="Haleciidae" genus="Halecium" kingdom="Animalia" order="Leptothecata" pageId="15" pageNumber="166" phylum="Cnidaria" rank="species" species="ovatum">
<emphasis id="B942E542FFDCFF892969F8D2FE56F8CB" box="[277,390,1851,1873]" italics="true" pageId="15" pageNumber="166">H. ovatum</emphasis>
</taxonomicName>
, in the absence of gonosome the material is assigned to that species.
</paragraph>
<paragraph id="8B893950FFDCFF892B55FF09FC20FE7B" blockId="15.[809,1449,224,481]" pageId="15" pageNumber="166">
The stolons of
<taxonomicName id="4C3642D3FFDCFF892BBDFF09FBE7FF6C" authorityName="Hincks" authorityYear="1861" box="[961,1079,224,246]" class="Hydrozoa" family="Haleciidae" genus="Halecium" kingdom="Animalia" order="Leptothecata" pageId="15" pageNumber="166" phylum="Cnidaria" rank="species" species="tenellum">
<emphasis id="B942E542FFDCFF892BBDFF09FBE7FF6C" box="[961,1079,224,246]" italics="true" pageId="15" pageNumber="166">H. tenellum</emphasis>
</taxonomicName>
and
<taxonomicName id="4C3642D3FFDCFF892C15FF09FB02FF6C" authorityName="Totton" authorityYear="1930" box="[1129,1234,224,246]" class="Hydrozoa" family="Haleciidae" genus="Halecium" kingdom="Animalia" order="Leptothecata" pageId="15" pageNumber="166" phylum="Cnidaria" rank="species" species="ovatum">
<emphasis id="B942E542FFDCFF892C15FF09FB02FF6C" box="[1129,1234,224,246]" italics="true" pageId="15" pageNumber="166">H. ovatum</emphasis>
</taxonomicName>
entwine on the same substrate and although difficult to differentiate, the two species can be distinguished by the strictly stolonal habit of
<taxonomicName id="4C3642D3FFDCFF892D45FEF2FA72FEAB" authorityName="Totton" authorityYear="1930" box="[1337,1442,283,305]" class="Hydrozoa" family="Haleciidae" genus="Halecium" kingdom="Animalia" order="Leptothecata" pageId="15" pageNumber="166" phylum="Cnidaria" rank="species" species="ovatum">
<emphasis id="B942E542FFDCFF892D45FEF2FA72FEAB" box="[1337,1442,283,305]" italics="true" pageId="15" pageNumber="166">H. ovatum</emphasis>
</taxonomicName>
, its broader, undulating and thinner-walled hydrorhizal stolons, branching of the subsidiary hydrophores from below the primary hydrophore, the greater overall cauline dimensions, the less strongly flared and outrolled rim and the ratio of diameter of hydrothecal rim to width of diaphragm (in
<taxonomicName id="4C3642D3FFDCFF892C82FE47FAB7FE5E" authorityName="Totton" authorityYear="1930" box="[1278,1383,430,452]" class="Hydrozoa" family="Haleciidae" genus="Halecium" kingdom="Animalia" order="Leptothecata" pageId="15" pageNumber="166" phylum="Cnidaria" rank="species" species="ovatum">
<emphasis id="B942E542FFDCFF892C82FE47FAB7FE5E" box="[1278,1383,430,452]" italics="true" pageId="15" pageNumber="166">H. ovatum</emphasis>
</taxonomicName>
1.5:1, in
<taxonomicName id="4C3642D3FFDCFF892B3FFE22FC6AFE7B" authorityName="Hincks" authorityYear="1861" box="[835,954,459,481]" class="Hydrozoa" family="Haleciidae" genus="Halecium" kingdom="Animalia" order="Leptothecata" pageId="15" pageNumber="166" phylum="Cnidaria" rank="species" species="tenellum">
<emphasis id="B942E542FFDCFF892B3FFE22FC6AFE7B" box="[835,954,459,481]" italics="true" pageId="15" pageNumber="166">H. tenellum</emphasis>
</taxonomicName>
2:1).
</paragraph>
</subSubSection>
</treatment>
</document>