Pelage polymorphism in Pacific harbor seals
Regional variation in the percentages of harbor seals, Phoca vitulina, in light- and dark-phase pelages has been reported recently. Distributions of color phases among sex classes and age-classes and within family groups were examined during two pupping seasons on Tugidak Island and one season on Ot...
Published in: | Canadian Journal of Zoology |
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Language: | English |
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Canadian Science Publishing
1981
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Online Access: | http://dx.doi.org/10.1139/z81-173 http://www.nrcresearchpress.com/doi/pdf/10.1139/z81-173 |
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crcansciencepubl:10.1139/z81-173 2023-12-17T10:48:43+01:00 Pelage polymorphism in Pacific harbor seals Kelly, Brendan P. 1981 http://dx.doi.org/10.1139/z81-173 http://www.nrcresearchpress.com/doi/pdf/10.1139/z81-173 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 59, issue 7, page 1212-1219 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1981 crcansciencepubl https://doi.org/10.1139/z81-173 2023-11-19T13:38:59Z Regional variation in the percentages of harbor seals, Phoca vitulina, in light- and dark-phase pelages has been reported recently. Distributions of color phases among sex classes and age-classes and within family groups were examined during two pupping seasons on Tugidak Island and one season on Otter Island, Alaska. The ratio of light phase to dark phase in 880 pups with light mothers showed a good fit with expected values predicted by the hypothesis that the pelage dimorphism is controlled by a pair of autosomal alleles with light phase dominant over dark. A sample of 229 pups with dark mothers did not fit the hypothesis well. Color phase ratios did not differ between sexes or size classes but varied consistently with age-class. Differential selection against seals with light-phase pelage seems to be highest in the youngest age-classes at both localities. Article in Journal/Newspaper Phoca vitulina Alaska Canadian Science Publishing (via Crossref) Pacific Canadian Journal of Zoology 59 7 1212 1219 |
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 Kelly, Brendan P. Pelage polymorphism in Pacific harbor seals |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Regional variation in the percentages of harbor seals, Phoca vitulina, in light- and dark-phase pelages has been reported recently. Distributions of color phases among sex classes and age-classes and within family groups were examined during two pupping seasons on Tugidak Island and one season on Otter Island, Alaska. The ratio of light phase to dark phase in 880 pups with light mothers showed a good fit with expected values predicted by the hypothesis that the pelage dimorphism is controlled by a pair of autosomal alleles with light phase dominant over dark. A sample of 229 pups with dark mothers did not fit the hypothesis well. Color phase ratios did not differ between sexes or size classes but varied consistently with age-class. Differential selection against seals with light-phase pelage seems to be highest in the youngest age-classes at both localities. |
format |
Article in Journal/Newspaper |
author |
Kelly, Brendan P. |
author_facet |
Kelly, Brendan P. |
author_sort |
Kelly, Brendan P. |
title |
Pelage polymorphism in Pacific harbor seals |
title_short |
Pelage polymorphism in Pacific harbor seals |
title_full |
Pelage polymorphism in Pacific harbor seals |
title_fullStr |
Pelage polymorphism in Pacific harbor seals |
title_full_unstemmed |
Pelage polymorphism in Pacific harbor seals |
title_sort |
pelage polymorphism in pacific harbor seals |
publisher |
Canadian Science Publishing |
publishDate |
1981 |
url |
http://dx.doi.org/10.1139/z81-173 http://www.nrcresearchpress.com/doi/pdf/10.1139/z81-173 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Phoca vitulina Alaska |
genre_facet |
Phoca vitulina Alaska |
op_source |
Canadian Journal of Zoology volume 59, issue 7, page 1212-1219 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z81-173 |
container_title |
Canadian Journal of Zoology |
container_volume |
59 |
container_issue |
7 |
container_start_page |
1212 |
op_container_end_page |
1219 |
_version_ |
1785572964777852928 |