Halecium tubatum Watson 2008
Halecium tubatum Watson, 2008 (Fig. 14 d–g) Material examined. ANT XV/3 : 48-276 , several polyps, on Sc. nana ANT XXI/2 : PS65/278 , several polyps, on Sy. weddelli and sponge; PS65/280 , few polyps, on undetermined anthoathecata. Remarks. Halecium tubatum was considered as species inquirenda by Pe...
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Online Access: | https://doi.org/10.5281/zenodo.5935003 http://treatment.plazi.org/id/03B887B7A444FFD8E983FF77FD469849 |
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ftzenodo:oai:zenodo.org:5935003 2024-09-15T17:44:24+00:00 Halecium tubatum Watson 2008 Soto, Joan J. Peña, Álvaro L. 2019-03-22 https://doi.org/10.5281/zenodo.5935003 http://treatment.plazi.org/id/03B887B7A444FFD8E983FF77FD469849 unknown Zenodo https://doi.org/10.11646/zootaxa.4570.1.1 http://zenodo.org/record/2608527 http://publication.plazi.org/id/FF81FFCFA46EFFF2E914FFEFFFBB9B7E https://sibils.text-analytics.ch/search/collections/plazi/03B887B7A444FFD8E983FF77FD469849 https://www.gbif.org/species/154497207 https://www.checklistbank.org/dataset/27992/taxon/03B887B7A444FFD8E983FF77FD469849.taxon https://doi.org/10.5281/zenodo.2608555 http://zoobank.org/EF369E98-EBD9-4647-B081-65AD1794A27C https://zenodo.org/communities/biosyslit https://doi.org/10.5281/zenodo.5935002 https://doi.org/10.5281/zenodo.5935003 oai:zenodo.org:5935003 http://treatment.plazi.org/id/03B887B7A444FFD8E983FF77FD469849 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica), pp. 1-78 in Zootaxa, 4570(1), 43, (2019-03-22) Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Haleciidae Halecium Halecium tubatum info:eu-repo/semantics/other 2019 ftzenodo https://doi.org/10.5281/zenodo.593500310.11646/zootaxa.4570.1.110.5281/zenodo.260855510.5281/zenodo.5935002 2024-07-26T05:32:20Z Halecium tubatum Watson, 2008 (Fig. 14 d–g) Material examined. ANT XV/3 : 48-276 , several polyps, on Sc. nana ANT XXI/2 : PS65/278 , several polyps, on Sy. weddelli and sponge; PS65/280 , few polyps, on undetermined anthoathecata. Remarks. Halecium tubatum was considered as species inquirenda by Peña Cantero (2014b), who pointed out that the species could correspond to incipient stems of other haleciids such as H. interpolatum . However, the analysis of the cnidome has contributed to a better characterization of the species (see below), proving to be different from other congenerics previously documented in Antarctic waters (cf. Peña Cantero 2014b). The species is considered here as valid, although mature specimens have not been found yet. We consider the two-three basal rings followed by a wavy internode (Fig. 14e), the absence of diaphragm (Fig. 14f), the presence of desmocytes (Fig. 14f), and the greatly recurved hydrotheca (Fig. 14 f–g), coupled with the size of the nematocysts, as unequivocal diagnostic characters of the species. Cnidome composed of microbasic euryteles? [range 17.0–19.5 x 6.0–8.0 µm, mean 18.7±0.6 x 7.2±0.6 µm (n=19)] and microbasic mastigophores [range 8.0–8.5 x 1.5–2.0 µm, mean 8.2±0.2 x 1.6±0.2 µm (n=17)]. Ecology and distribution. Valid records of the species are restricted to the holotype, which was collected off Wilkes Land (East Antarctica) at a depth of 163 m (Watson 2008). Material examined here was found between 119 and 417 m depth. Present finding constitutes the first evidence of the species from both the Weddell Sea and West Antarctica, pointing to a circum-Antarctic distribution. Published as part of Soto, Joan J. & Peña, Álvaro L., 2019, Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica), pp. 1-78 in Zootaxa 4570 (1) on page 43, DOI:10.11646/zootaxa.4570.1.1, http://zenodo.org/record/2608527 Other/Unknown Material Antarc* Antarctic Antarctica East Antarctica Weddell Sea West Antarctica Wilkes Land Zenodo |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Haleciidae Halecium Halecium tubatum |
spellingShingle |
Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Haleciidae Halecium Halecium tubatum Soto, Joan J. Peña, Álvaro L. Halecium tubatum Watson 2008 |
topic_facet |
Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Haleciidae Halecium Halecium tubatum |
description |
Halecium tubatum Watson, 2008 (Fig. 14 d–g) Material examined. ANT XV/3 : 48-276 , several polyps, on Sc. nana ANT XXI/2 : PS65/278 , several polyps, on Sy. weddelli and sponge; PS65/280 , few polyps, on undetermined anthoathecata. Remarks. Halecium tubatum was considered as species inquirenda by Peña Cantero (2014b), who pointed out that the species could correspond to incipient stems of other haleciids such as H. interpolatum . However, the analysis of the cnidome has contributed to a better characterization of the species (see below), proving to be different from other congenerics previously documented in Antarctic waters (cf. Peña Cantero 2014b). The species is considered here as valid, although mature specimens have not been found yet. We consider the two-three basal rings followed by a wavy internode (Fig. 14e), the absence of diaphragm (Fig. 14f), the presence of desmocytes (Fig. 14f), and the greatly recurved hydrotheca (Fig. 14 f–g), coupled with the size of the nematocysts, as unequivocal diagnostic characters of the species. Cnidome composed of microbasic euryteles? [range 17.0–19.5 x 6.0–8.0 µm, mean 18.7±0.6 x 7.2±0.6 µm (n=19)] and microbasic mastigophores [range 8.0–8.5 x 1.5–2.0 µm, mean 8.2±0.2 x 1.6±0.2 µm (n=17)]. Ecology and distribution. Valid records of the species are restricted to the holotype, which was collected off Wilkes Land (East Antarctica) at a depth of 163 m (Watson 2008). Material examined here was found between 119 and 417 m depth. Present finding constitutes the first evidence of the species from both the Weddell Sea and West Antarctica, pointing to a circum-Antarctic distribution. Published as part of Soto, Joan J. & Peña, Álvaro L., 2019, Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica), pp. 1-78 in Zootaxa 4570 (1) on page 43, DOI:10.11646/zootaxa.4570.1.1, http://zenodo.org/record/2608527 |
format |
Other/Unknown Material |
author |
Soto, Joan J. Peña, Álvaro L. |
author_facet |
Soto, Joan J. Peña, Álvaro L. |
author_sort |
Soto, Joan J. |
title |
Halecium tubatum Watson 2008 |
title_short |
Halecium tubatum Watson 2008 |
title_full |
Halecium tubatum Watson 2008 |
title_fullStr |
Halecium tubatum Watson 2008 |
title_full_unstemmed |
Halecium tubatum Watson 2008 |
title_sort |
halecium tubatum watson 2008 |
publisher |
Zenodo |
publishDate |
2019 |
url |
https://doi.org/10.5281/zenodo.5935003 http://treatment.plazi.org/id/03B887B7A444FFD8E983FF77FD469849 |
genre |
Antarc* Antarctic Antarctica East Antarctica Weddell Sea West Antarctica Wilkes Land |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Weddell Sea West Antarctica Wilkes Land |
op_source |
Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica), pp. 1-78 in Zootaxa, 4570(1), 43, (2019-03-22) |
op_relation |
https://doi.org/10.11646/zootaxa.4570.1.1 http://zenodo.org/record/2608527 http://publication.plazi.org/id/FF81FFCFA46EFFF2E914FFEFFFBB9B7E https://sibils.text-analytics.ch/search/collections/plazi/03B887B7A444FFD8E983FF77FD469849 https://www.gbif.org/species/154497207 https://www.checklistbank.org/dataset/27992/taxon/03B887B7A444FFD8E983FF77FD469849.taxon https://doi.org/10.5281/zenodo.2608555 http://zoobank.org/EF369E98-EBD9-4647-B081-65AD1794A27C https://zenodo.org/communities/biosyslit https://doi.org/10.5281/zenodo.5935002 https://doi.org/10.5281/zenodo.5935003 oai:zenodo.org:5935003 http://treatment.plazi.org/id/03B887B7A444FFD8E983FF77FD469849 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.593500310.11646/zootaxa.4570.1.110.5281/zenodo.260855510.5281/zenodo.5935002 |
_version_ |
1810491954955288576 |