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The relationship between two species of fur seals Arctocephalus Tropicalis (Gray) and A. Gazella (Peters) on Marion Island
Dissertation (MSc (Zoology))--University of Pretoria, 1984.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2022
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| _version_ | 1867613449908912128 |
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| access_status_str | Open Access |
| author2 | Skinner, J.D. (John Dawson), 1932- |
| author_browse | Skinner, J.D. (John Dawson), 1932- |
| author_facet | Skinner, J.D. (John Dawson), 1932- |
| collection | Thesis |
| dc_rights_str_mv | © 2021 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc (Zoology))--University of Pretoria, 1984. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/83245 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:36:19.976Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/83245 The relationship between two species of fur seals Arctocephalus Tropicalis (Gray) and A. Gazella (Peters) on Marion Island Skinner, J.D. (John Dawson), 1932- Robinson, T.J. Kerley, Graham Ian Holmes UCTD Relatioships Fur seals Arctocephalus Tropicalis (Gray) A. Gazella (Peters) Marion Island Dissertation (MSc (Zoology))--University of Pretoria, 1984. Subantarctic fur seals Arctocephalus tropicalis and Antarctic fur seals A. gazella are sympatric at the Prince Edward Is lands, and appear to be hybridizing. Adult males of both species and the interspecific hybrids can be distinguished using univariate and multivariate analyses of cranial measurements. The two species differed in the electrophoretic mobility of the serum protein, transferrin. The extent of hybridization appears to be limited with the hybrids representing 0,1% of the total fur seal population (34528 A. tropical is and 300-400 A. gazella). Although the seasonal haul-out patterns and breeding habitat preferences of these two species do differ, these differences do not appear to be sufficient to prevent hybridization. Differences 1n suckling periods and pup growth rates may be acting to limit hybridization through pup mortality of hybrids born to A. gazella females. Zoology and Entomology MSc (Zoology) Unrestricted 2022-01-12T06:00:47Z 2022-01-12T06:00:47Z 19/8/2021 1984 Dissertation * http://hdl.handle.net/2263/83245 en © 2021 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Relatioships Fur seals Arctocephalus Tropicalis (Gray) A. Gazella (Peters) Marion Island The relationship between two species of fur seals Arctocephalus Tropicalis (Gray) and A. Gazella (Peters) on Marion Island |
| title | The relationship between two species of fur seals Arctocephalus Tropicalis (Gray) and A. Gazella (Peters) on Marion Island |
| title_full | The relationship between two species of fur seals Arctocephalus Tropicalis (Gray) and A. Gazella (Peters) on Marion Island |
| title_fullStr | The relationship between two species of fur seals Arctocephalus Tropicalis (Gray) and A. Gazella (Peters) on Marion Island |
| title_full_unstemmed | The relationship between two species of fur seals Arctocephalus Tropicalis (Gray) and A. Gazella (Peters) on Marion Island |
| title_short | The relationship between two species of fur seals Arctocephalus Tropicalis (Gray) and A. Gazella (Peters) on Marion Island |
| title_sort | relationship between two species of fur seals arctocephalus tropicalis gray and a gazella peters on marion island |
| topic | UCTD Relatioships Fur seals Arctocephalus Tropicalis (Gray) A. Gazella (Peters) Marion Island |
| url | http://hdl.handle.net/2263/83245 |