CYTOGENETIC COMPARISON OF SOME PINNIPEDS (MAMMALIA: EUTHERIA)
Karyotypes of the harbor seal, Phoca vitulina (2N = 32), the bearded seal, Erignathus barbatus (2N = 34), the Weddell seal, Leptonychotes weddelli (2N = 34), the walrus, Odobenus rosmarus (2N = 32), the Steller sea lion, Eumetopias jubata (2N = 36), and the northern fur seal, Callorhinus ursinus (2N...
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Canadian Science Publishing
1967
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crcansciencepubl:10.1139/z67-088 2023-12-17T10:27:55+01:00 CYTOGENETIC COMPARISON OF SOME PINNIPEDS (MAMMALIA: EUTHERIA) Fay, F. H. Rausch, V. R. Feltz, E. T. 1967 http://dx.doi.org/10.1139/z67-088 http://www.nrcresearchpress.com/doi/pdf/10.1139/z67-088 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 45, issue 5, page 773-778 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1967 crcansciencepubl https://doi.org/10.1139/z67-088 2023-11-19T13:39:30Z Karyotypes of the harbor seal, Phoca vitulina (2N = 32), the bearded seal, Erignathus barbatus (2N = 34), the Weddell seal, Leptonychotes weddelli (2N = 34), the walrus, Odobenus rosmarus (2N = 32), the Steller sea lion, Eumetopias jubata (2N = 36), and the northern fur seal, Callorhinus ursinus (2N = 36), are described and compared with those of the ringed seal, Pusa hispida, and California sea lion, Zalophus californianus, reported by other workers. These are discussed with reference to current theories of pinniped phylogeny and systematics. The number and morphology of chromosomes in these eight species, representing each family and subfamily of pinnipeds, were found to be remarkably similar. This is interpreted as evidence of close interrelationship, commensurate with the theory of monophyletic origin. Karyograms of the harbor seal and ringed seal are virtually identical, as are those of the bearded and Weddell seals and those of the Steller and California sea lions. The karyotype of the fur seal is similar to the sea lions', while that of the walrus resembles the phocids' in some ways and the otariids' in others. A need for thorough comparative studies and reappraisal of pinniped systematics at the subfamilial and generic levels is indicated. Article in Journal/Newspaper bearded seal Erignathus barbatus harbor seal Leptonychotes weddelli Odobenus rosmarus Phoca vitulina Pusa hispida ringed seal Weddell Seal Weddell Seals Callorhinus ursinus Northern fur seal walrus* Canadian Science Publishing (via Crossref) Weddell Canadian Journal of Zoology 45 5 773 778 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Fay, F. H. Rausch, V. R. Feltz, E. T. CYTOGENETIC COMPARISON OF SOME PINNIPEDS (MAMMALIA: EUTHERIA) |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Karyotypes of the harbor seal, Phoca vitulina (2N = 32), the bearded seal, Erignathus barbatus (2N = 34), the Weddell seal, Leptonychotes weddelli (2N = 34), the walrus, Odobenus rosmarus (2N = 32), the Steller sea lion, Eumetopias jubata (2N = 36), and the northern fur seal, Callorhinus ursinus (2N = 36), are described and compared with those of the ringed seal, Pusa hispida, and California sea lion, Zalophus californianus, reported by other workers. These are discussed with reference to current theories of pinniped phylogeny and systematics. The number and morphology of chromosomes in these eight species, representing each family and subfamily of pinnipeds, were found to be remarkably similar. This is interpreted as evidence of close interrelationship, commensurate with the theory of monophyletic origin. Karyograms of the harbor seal and ringed seal are virtually identical, as are those of the bearded and Weddell seals and those of the Steller and California sea lions. The karyotype of the fur seal is similar to the sea lions', while that of the walrus resembles the phocids' in some ways and the otariids' in others. A need for thorough comparative studies and reappraisal of pinniped systematics at the subfamilial and generic levels is indicated. |
format |
Article in Journal/Newspaper |
author |
Fay, F. H. Rausch, V. R. Feltz, E. T. |
author_facet |
Fay, F. H. Rausch, V. R. Feltz, E. T. |
author_sort |
Fay, F. H. |
title |
CYTOGENETIC COMPARISON OF SOME PINNIPEDS (MAMMALIA: EUTHERIA) |
title_short |
CYTOGENETIC COMPARISON OF SOME PINNIPEDS (MAMMALIA: EUTHERIA) |
title_full |
CYTOGENETIC COMPARISON OF SOME PINNIPEDS (MAMMALIA: EUTHERIA) |
title_fullStr |
CYTOGENETIC COMPARISON OF SOME PINNIPEDS (MAMMALIA: EUTHERIA) |
title_full_unstemmed |
CYTOGENETIC COMPARISON OF SOME PINNIPEDS (MAMMALIA: EUTHERIA) |
title_sort |
cytogenetic comparison of some pinnipeds (mammalia: eutheria) |
publisher |
Canadian Science Publishing |
publishDate |
1967 |
url |
http://dx.doi.org/10.1139/z67-088 http://www.nrcresearchpress.com/doi/pdf/10.1139/z67-088 |
geographic |
Weddell |
geographic_facet |
Weddell |
genre |
bearded seal Erignathus barbatus harbor seal Leptonychotes weddelli Odobenus rosmarus Phoca vitulina Pusa hispida ringed seal Weddell Seal Weddell Seals Callorhinus ursinus Northern fur seal walrus* |
genre_facet |
bearded seal Erignathus barbatus harbor seal Leptonychotes weddelli Odobenus rosmarus Phoca vitulina Pusa hispida ringed seal Weddell Seal Weddell Seals Callorhinus ursinus Northern fur seal walrus* |
op_source |
Canadian Journal of Zoology volume 45, issue 5, page 773-778 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z67-088 |
container_title |
Canadian Journal of Zoology |
container_volume |
45 |
container_issue |
5 |
container_start_page |
773 |
op_container_end_page |
778 |
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1785579876658446336 |