Relative population sizes and trends, and hybridization of fur seals Arctocephalus tropicalis and A. gazella at the Prince Edward Islands, Southern Ocean
Fur seals were counted at the Prince Edward Islands during the 1981/1982 austral summer. Classified counts, adjusted for pup undercounting and mortality, pregnancy rate and seasonal haul-out patterns, of Arctocephalus tropicalis and A. gazella are presented. These populations have entered a phase of...
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ftjafricanj:oai:ojs.ajol.info:article/153032 2023-05-15T18:03:26+02:00 Relative population sizes and trends, and hybridization of fur seals Arctocephalus tropicalis and A. gazella at the Prince Edward Islands, Southern Ocean Kerley, G.I.H. 2017-03-14 application/pdf http://www.ajol.info/index.php/az/article/view/153032 eng eng NISC (Pty) Ltd http://www.ajol.info/index.php/az/article/view/153032/142624 http://www.ajol.info/index.php/az/article/view/153032 The copyright belongs to the Zoological Society of Southern Africa. African Zoology; Vol 18, No 4 (1983); 388-392 2224-073X 1562-7020 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 2017 ftjafricanj 2017-03-19T01:02:06Z Fur seals were counted at the Prince Edward Islands during the 1981/1982 austral summer. Classified counts, adjusted for pup undercounting and mortality, pregnancy rate and seasonal haul-out patterns, of Arctocephalus tropicalis and A. gazella are presented. These populations have entered a phase of rapid growth, as indicated by higher rates of population growth than previously found. The possible role of A. gazella immigration is unknown. There has been an increase in the number of breeding localities used by both species. At present the extent of hybridization between these two species appears limited, possibly by behavioural, ecological and genetic processes. Article in Journal/Newspaper Prince Edward Islands Southern Ocean AJOL - African Journals Online Austral Southern Ocean |
institution |
Open Polar |
collection |
AJOL - African Journals Online |
op_collection_id |
ftjafricanj |
language |
English |
description |
Fur seals were counted at the Prince Edward Islands during the 1981/1982 austral summer. Classified counts, adjusted for pup undercounting and mortality, pregnancy rate and seasonal haul-out patterns, of Arctocephalus tropicalis and A. gazella are presented. These populations have entered a phase of rapid growth, as indicated by higher rates of population growth than previously found. The possible role of A. gazella immigration is unknown. There has been an increase in the number of breeding localities used by both species. At present the extent of hybridization between these two species appears limited, possibly by behavioural, ecological and genetic processes. |
format |
Article in Journal/Newspaper |
author |
Kerley, G.I.H. |
spellingShingle |
Kerley, G.I.H. Relative population sizes and trends, and hybridization of fur seals Arctocephalus tropicalis and A. gazella at the Prince Edward Islands, Southern Ocean |
author_facet |
Kerley, G.I.H. |
author_sort |
Kerley, G.I.H. |
title |
Relative population sizes and trends, and hybridization of fur seals Arctocephalus tropicalis and A. gazella at the Prince Edward Islands, Southern Ocean |
title_short |
Relative population sizes and trends, and hybridization of fur seals Arctocephalus tropicalis and A. gazella at the Prince Edward Islands, Southern Ocean |
title_full |
Relative population sizes and trends, and hybridization of fur seals Arctocephalus tropicalis and A. gazella at the Prince Edward Islands, Southern Ocean |
title_fullStr |
Relative population sizes and trends, and hybridization of fur seals Arctocephalus tropicalis and A. gazella at the Prince Edward Islands, Southern Ocean |
title_full_unstemmed |
Relative population sizes and trends, and hybridization of fur seals Arctocephalus tropicalis and A. gazella at the Prince Edward Islands, Southern Ocean |
title_sort |
relative population sizes and trends, and hybridization of fur seals arctocephalus tropicalis and a. gazella at the prince edward islands, southern ocean |
publisher |
NISC (Pty) Ltd |
publishDate |
2017 |
url |
http://www.ajol.info/index.php/az/article/view/153032 |
geographic |
Austral Southern Ocean |
geographic_facet |
Austral Southern Ocean |
genre |
Prince Edward Islands Southern Ocean |
genre_facet |
Prince Edward Islands Southern Ocean |
op_source |
African Zoology; Vol 18, No 4 (1983); 388-392 2224-073X 1562-7020 |
op_relation |
http://www.ajol.info/index.php/az/article/view/153032/142624 http://www.ajol.info/index.php/az/article/view/153032 |
op_rights |
The copyright belongs to the Zoological Society of Southern Africa. |
_version_ |
1766174286766145536 |