Dispersal and dispersion of southern elephant seals in the Kerguelen province, Southern Ocean
Abstract Southern elephant seals Mirounga leonina within the Kerguelen province disperse between Marion Island (MI), Iles Crozet (IC) and Iles Kerguelen (IK) despite the high site fidelity characteristic of this species. From 1987–2002, 199 IC individuals, or 11.63% of the tagged population there, w...
Published in: | Antarctic Science |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
2011
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0954102011000447 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102011000447 |
id |
crcambridgeupr:10.1017/s0954102011000447 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0954102011000447 2024-06-23T07:48:03+00:00 Dispersal and dispersion of southern elephant seals in the Kerguelen province, Southern Ocean Oosthuizen, W. Chris Bester, Marthán N. Tosh, Cheryl A. Guinet, Christophe Besson, Dominique Nico de Bruyn, P.J. 2011 http://dx.doi.org/10.1017/s0954102011000447 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102011000447 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 23, issue 6, page 567-577 ISSN 0954-1020 1365-2079 journal-article 2011 crcambridgeupr https://doi.org/10.1017/s0954102011000447 2024-05-29T08:09:35Z Abstract Southern elephant seals Mirounga leonina within the Kerguelen province disperse between Marion Island (MI), Iles Crozet (IC) and Iles Kerguelen (IK) despite the high site fidelity characteristic of this species. From 1987–2002, 199 IC individuals, or 11.63% of the tagged population there, were resighted at MI. Resights of IC seals at MI peaked during the juvenile moult and seals aged 0–2 represent 66% of all resights made. Equal numbers of male and female seals (all age classes) were dispersing. Dispersing breeding females ( n = 22, on 33 occasions) outnumbered dispersing breeding males ( n = 6, on 16 occasions), after initially emigrating from IC to MI as juvenile seals (natal dispersal). Greater male-mediated gene flow was ultimately attained due to the polygynous mating system and some extremely successful males. Of 132 seals fitted with satellite-relay data loggers at MI, six hauled out at IC and three at IK. Two of the seals which migrated to IC were born at MI; all others were unmarked males likely to be native to IC or IK. Dispersal should ideally be considered when assessing vital rates for southern Indian Ocean elephant seal populations. Article in Journal/Newspaper Antarctic Science Elephant Seal Elephant Seals Marion Island Mirounga leonina Southern Elephant Seals Southern Ocean Cambridge University Press Indian Kerguelen Southern Ocean Antarctic Science 23 6 567 577 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Southern elephant seals Mirounga leonina within the Kerguelen province disperse between Marion Island (MI), Iles Crozet (IC) and Iles Kerguelen (IK) despite the high site fidelity characteristic of this species. From 1987–2002, 199 IC individuals, or 11.63% of the tagged population there, were resighted at MI. Resights of IC seals at MI peaked during the juvenile moult and seals aged 0–2 represent 66% of all resights made. Equal numbers of male and female seals (all age classes) were dispersing. Dispersing breeding females ( n = 22, on 33 occasions) outnumbered dispersing breeding males ( n = 6, on 16 occasions), after initially emigrating from IC to MI as juvenile seals (natal dispersal). Greater male-mediated gene flow was ultimately attained due to the polygynous mating system and some extremely successful males. Of 132 seals fitted with satellite-relay data loggers at MI, six hauled out at IC and three at IK. Two of the seals which migrated to IC were born at MI; all others were unmarked males likely to be native to IC or IK. Dispersal should ideally be considered when assessing vital rates for southern Indian Ocean elephant seal populations. |
format |
Article in Journal/Newspaper |
author |
Oosthuizen, W. Chris Bester, Marthán N. Tosh, Cheryl A. Guinet, Christophe Besson, Dominique Nico de Bruyn, P.J. |
spellingShingle |
Oosthuizen, W. Chris Bester, Marthán N. Tosh, Cheryl A. Guinet, Christophe Besson, Dominique Nico de Bruyn, P.J. Dispersal and dispersion of southern elephant seals in the Kerguelen province, Southern Ocean |
author_facet |
Oosthuizen, W. Chris Bester, Marthán N. Tosh, Cheryl A. Guinet, Christophe Besson, Dominique Nico de Bruyn, P.J. |
author_sort |
Oosthuizen, W. Chris |
title |
Dispersal and dispersion of southern elephant seals in the Kerguelen province, Southern Ocean |
title_short |
Dispersal and dispersion of southern elephant seals in the Kerguelen province, Southern Ocean |
title_full |
Dispersal and dispersion of southern elephant seals in the Kerguelen province, Southern Ocean |
title_fullStr |
Dispersal and dispersion of southern elephant seals in the Kerguelen province, Southern Ocean |
title_full_unstemmed |
Dispersal and dispersion of southern elephant seals in the Kerguelen province, Southern Ocean |
title_sort |
dispersal and dispersion of southern elephant seals in the kerguelen province, southern ocean |
publisher |
Cambridge University Press (CUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1017/s0954102011000447 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102011000447 |
geographic |
Indian Kerguelen Southern Ocean |
geographic_facet |
Indian Kerguelen Southern Ocean |
genre |
Antarctic Science Elephant Seal Elephant Seals Marion Island Mirounga leonina Southern Elephant Seals Southern Ocean |
genre_facet |
Antarctic Science Elephant Seal Elephant Seals Marion Island Mirounga leonina Southern Elephant Seals Southern Ocean |
op_source |
Antarctic Science volume 23, issue 6, page 567-577 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102011000447 |
container_title |
Antarctic Science |
container_volume |
23 |
container_issue |
6 |
container_start_page |
567 |
op_container_end_page |
577 |
_version_ |
1802638453055160320 |