Halecium beanii Johnston 1838
Halecium cf. beanii (Johnston, 1838) (fig. 3 D) Thoa beanii Johnston, 1838: 120, pl. 7 figs 1–2. Halecium beanii – Schuchert, 2005: 615, figs 5 –6. Material examined. Stn. T10 , 15.ii.2005: one sterile colony, 5.5 cm high, with polysiphonic stem (NHM 2009.17). Remarks . The examined specimen is prov...
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ftdatacite:10.5281/zenodo.6209984 2023-05-15T13:44:50+02:00 Halecium beanii Johnston 1838 Galea, Horia R. 2010 https://dx.doi.org/10.5281/zenodo.6209984 https://zenodo.org/record/6209984 unknown Zenodo http://publication.plazi.org/id/FFDE5B06FFF34D51FFE01E40F349FFB8 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.5281/zenodo.205235 http://publication.plazi.org/id/FFDE5B06FFF34D51FFE01E40F349FFB8 https://dx.doi.org/10.5281/zenodo.205238 https://dx.doi.org/10.5281/zenodo.205236 https://dx.doi.org/10.5281/zenodo.208193 https://dx.doi.org/10.5281/zenodo.205240 https://dx.doi.org/10.5281/zenodo.6209985 https://zenodo.org/communities/biosyslit Open Access Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 info:eu-repo/semantics/openAccess CC0 Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Haleciidae Halecium Halecium beanii article-journal ScholarlyArticle Taxonomic treatment Text 2010 ftdatacite https://doi.org/10.5281/zenodo.6209984 https://doi.org/10.5281/zenodo.205235 https://doi.org/10.5281/zenodo.205238 https://doi.org/10.5281/zenodo.205236 https://doi.org/10.5281/zenodo.208193 https://doi.org/10.5281/zenodo.205240 https://doi.or 2022-04-01T11:51:53Z Halecium cf. beanii (Johnston, 1838) (fig. 3 D) Thoa beanii Johnston, 1838: 120, pl. 7 figs 1–2. Halecium beanii – Schuchert, 2005: 615, figs 5 –6. Material examined. Stn. T10 , 15.ii.2005: one sterile colony, 5.5 cm high, with polysiphonic stem (NHM 2009.17). Remarks . The examined specimen is provisionally assigned to Johnston’s (1838) species on the account of its polysiphonic, irregularly branched stem. However, additional fertile female specimens are necessary to validate the present identification. Millard (1975) observed both H. beanii and H. halecinum (Linnaeus, 1758) in South Africa, the closest location to Tristan da Cunha. She also warned about the impossibility of proper identification of these species in the absence of female gonothecae. On the other hand, Cornelius (1995a) showed that Linnaeus’ (1758) species always forms regularly pinnate colonies, while the stems of H. beanii are “imperfectly pinnate, shrubby, varied in appearance”, a conclusion partly shared by Schuchert (2005), who showed several exceptions. Although Millard (1975) did not discuss any morphological peculiarities in the female gonothecae of H. beanii from South Africa, Schuchert (2005) showed several important differences (polygonal cross-section, 1. Torrey’s (1902) species has sessile primary hydrothecae, not terminal on branches, as illustrated by Jäderholm (1920). increased number of eggs), rendering it distinct from the European population. Distribution . Cosmopolitan, penetrating well into the Arctic Ocean and the coasts of Patagonia, but not into the Antarctic (Medel & Vervoort 2000). This is the first record of this species for Tristan da Cunha. : Published as part of Galea, Horia R., 2010, Notes on a small collection of thecate hydroids (Cnidaria: Hydrozoa) from Tristan da Cunha, south Atlantic, pp. 1-18 in Zootaxa 2336 on pages 4-5, DOI: 10.5281/zenodo.205235 Text Antarc* Antarctic Arctic Arctic Ocean DataCite Metadata Store (German National Library of Science and Technology) Arctic Antarctic The Antarctic Arctic Ocean Patagonia Tristan ENVELOPE(140.900,140.900,-66.735,-66.735) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Haleciidae Halecium Halecium beanii |
spellingShingle |
Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Haleciidae Halecium Halecium beanii Galea, Horia R. Halecium beanii Johnston 1838 |
topic_facet |
Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Haleciidae Halecium Halecium beanii |
description |
Halecium cf. beanii (Johnston, 1838) (fig. 3 D) Thoa beanii Johnston, 1838: 120, pl. 7 figs 1–2. Halecium beanii – Schuchert, 2005: 615, figs 5 –6. Material examined. Stn. T10 , 15.ii.2005: one sterile colony, 5.5 cm high, with polysiphonic stem (NHM 2009.17). Remarks . The examined specimen is provisionally assigned to Johnston’s (1838) species on the account of its polysiphonic, irregularly branched stem. However, additional fertile female specimens are necessary to validate the present identification. Millard (1975) observed both H. beanii and H. halecinum (Linnaeus, 1758) in South Africa, the closest location to Tristan da Cunha. She also warned about the impossibility of proper identification of these species in the absence of female gonothecae. On the other hand, Cornelius (1995a) showed that Linnaeus’ (1758) species always forms regularly pinnate colonies, while the stems of H. beanii are “imperfectly pinnate, shrubby, varied in appearance”, a conclusion partly shared by Schuchert (2005), who showed several exceptions. Although Millard (1975) did not discuss any morphological peculiarities in the female gonothecae of H. beanii from South Africa, Schuchert (2005) showed several important differences (polygonal cross-section, 1. Torrey’s (1902) species has sessile primary hydrothecae, not terminal on branches, as illustrated by Jäderholm (1920). increased number of eggs), rendering it distinct from the European population. Distribution . Cosmopolitan, penetrating well into the Arctic Ocean and the coasts of Patagonia, but not into the Antarctic (Medel & Vervoort 2000). This is the first record of this species for Tristan da Cunha. : Published as part of Galea, Horia R., 2010, Notes on a small collection of thecate hydroids (Cnidaria: Hydrozoa) from Tristan da Cunha, south Atlantic, pp. 1-18 in Zootaxa 2336 on pages 4-5, DOI: 10.5281/zenodo.205235 |
format |
Text |
author |
Galea, Horia R. |
author_facet |
Galea, Horia R. |
author_sort |
Galea, Horia R. |
title |
Halecium beanii Johnston 1838 |
title_short |
Halecium beanii Johnston 1838 |
title_full |
Halecium beanii Johnston 1838 |
title_fullStr |
Halecium beanii Johnston 1838 |
title_full_unstemmed |
Halecium beanii Johnston 1838 |
title_sort |
halecium beanii johnston 1838 |
publisher |
Zenodo |
publishDate |
2010 |
url |
https://dx.doi.org/10.5281/zenodo.6209984 https://zenodo.org/record/6209984 |
long_lat |
ENVELOPE(140.900,140.900,-66.735,-66.735) |
geographic |
Arctic Antarctic The Antarctic Arctic Ocean Patagonia Tristan |
geographic_facet |
Arctic Antarctic The Antarctic Arctic Ocean Patagonia Tristan |
genre |
Antarc* Antarctic Arctic Arctic Ocean |
genre_facet |
Antarc* Antarctic Arctic Arctic Ocean |
op_relation |
http://publication.plazi.org/id/FFDE5B06FFF34D51FFE01E40F349FFB8 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.5281/zenodo.205235 http://publication.plazi.org/id/FFDE5B06FFF34D51FFE01E40F349FFB8 https://dx.doi.org/10.5281/zenodo.205238 https://dx.doi.org/10.5281/zenodo.205236 https://dx.doi.org/10.5281/zenodo.208193 https://dx.doi.org/10.5281/zenodo.205240 https://dx.doi.org/10.5281/zenodo.6209985 https://zenodo.org/communities/biosyslit |
op_rights |
Open Access Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC0 |
op_doi |
https://doi.org/10.5281/zenodo.6209984 https://doi.org/10.5281/zenodo.205235 https://doi.org/10.5281/zenodo.205238 https://doi.org/10.5281/zenodo.205236 https://doi.org/10.5281/zenodo.208193 https://doi.org/10.5281/zenodo.205240 https://doi.or |
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1766207380719140864 |