Pup growth and maternal attendance patterns in Subantarctic fur seals
Samples of pups from the expanding populations of Subantarctic fur seals (Arctocephalus tropicalis) at Marion and Gough islands were weighed at specific ages between birth and weaning in the period 1993-2000. Growth was estimated and compared between years, sexes, sites of different density, and pop...
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ftjafricanj:oai:ojs.ajol.info:article/155408 2023-05-15T17:10:17+02:00 Pup growth and maternal attendance patterns in Subantarctic fur seals Kirkman, S.P. Bester, M.N. Hofmeyr, G.J.G. Pistorius, P.A. Makhado, A.B. 2017-05-02 application/pdf https://www.ajol.info/index.php/az/article/view/155408 eng eng NISC (Pty) Ltd https://www.ajol.info/index.php/az/article/view/155408/145032 https://www.ajol.info/index.php/az/article/view/155408 The copyright belongs to the Zoological Society of Southern Africa. African Zoology; Vol 37, No 1 (2002); 13–19 2224-073X 1562-7020 Subantarctic fur seal Marion Island Gough Island pup growth maternal attendance behaviour info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 2017 ftjafricanj 2017-05-06T23:57:24Z Samples of pups from the expanding populations of Subantarctic fur seals (Arctocephalus tropicalis) at Marion and Gough islands were weighed at specific ages between birth and weaning in the period 1993-2000. Growth was estimated and compared between years, sexes, sites of different density, and populations. Pups of comparable age were consistently heavier at Marion Island than at Gough Island, probably reflecting relative prey resource abundance. No changes in pup growth rates were apparent over the study period, nor was there any evidence that growth was affected by ENSO events. Measures of pup growth at Marion Island were complemented by measures of maternal attendance behaviour during three summer and winter seasons. More years of data are required to determine patterns between attendance, growth, resource conditions and population abundance trends.Key words: Subantarctic fur seal, Marion Island, Gough Island, pup growth, maternal attendance behaviour. Article in Journal/Newspaper Marion Island AJOL - African Journals Online Gough ENVELOPE(159.367,159.367,-81.633,-81.633) |
institution |
Open Polar |
collection |
AJOL - African Journals Online |
op_collection_id |
ftjafricanj |
language |
English |
topic |
Subantarctic fur seal Marion Island Gough Island pup growth maternal attendance behaviour |
spellingShingle |
Subantarctic fur seal Marion Island Gough Island pup growth maternal attendance behaviour Kirkman, S.P. Bester, M.N. Hofmeyr, G.J.G. Pistorius, P.A. Makhado, A.B. Pup growth and maternal attendance patterns in Subantarctic fur seals |
topic_facet |
Subantarctic fur seal Marion Island Gough Island pup growth maternal attendance behaviour |
description |
Samples of pups from the expanding populations of Subantarctic fur seals (Arctocephalus tropicalis) at Marion and Gough islands were weighed at specific ages between birth and weaning in the period 1993-2000. Growth was estimated and compared between years, sexes, sites of different density, and populations. Pups of comparable age were consistently heavier at Marion Island than at Gough Island, probably reflecting relative prey resource abundance. No changes in pup growth rates were apparent over the study period, nor was there any evidence that growth was affected by ENSO events. Measures of pup growth at Marion Island were complemented by measures of maternal attendance behaviour during three summer and winter seasons. More years of data are required to determine patterns between attendance, growth, resource conditions and population abundance trends.Key words: Subantarctic fur seal, Marion Island, Gough Island, pup growth, maternal attendance behaviour. |
format |
Article in Journal/Newspaper |
author |
Kirkman, S.P. Bester, M.N. Hofmeyr, G.J.G. Pistorius, P.A. Makhado, A.B. |
author_facet |
Kirkman, S.P. Bester, M.N. Hofmeyr, G.J.G. Pistorius, P.A. Makhado, A.B. |
author_sort |
Kirkman, S.P. |
title |
Pup growth and maternal attendance patterns in Subantarctic fur seals |
title_short |
Pup growth and maternal attendance patterns in Subantarctic fur seals |
title_full |
Pup growth and maternal attendance patterns in Subantarctic fur seals |
title_fullStr |
Pup growth and maternal attendance patterns in Subantarctic fur seals |
title_full_unstemmed |
Pup growth and maternal attendance patterns in Subantarctic fur seals |
title_sort |
pup growth and maternal attendance patterns in subantarctic fur seals |
publisher |
NISC (Pty) Ltd |
publishDate |
2017 |
url |
https://www.ajol.info/index.php/az/article/view/155408 |
long_lat |
ENVELOPE(159.367,159.367,-81.633,-81.633) |
geographic |
Gough |
geographic_facet |
Gough |
genre |
Marion Island |
genre_facet |
Marion Island |
op_source |
African Zoology; Vol 37, No 1 (2002); 13–19 2224-073X 1562-7020 |
op_relation |
https://www.ajol.info/index.php/az/article/view/155408/145032 https://www.ajol.info/index.php/az/article/view/155408 |
op_rights |
The copyright belongs to the Zoological Society of Southern Africa. |
_version_ |
1766066874375733248 |