Dispersal and dispersion of southern elephant seals in the Kerguelen province, Southern Ocean
International audience 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 popul...
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ftunivnantes:oai:HAL:hal-00649921v1 2023-05-15T14:14:50+02:00 Dispersal and dispersion of southern elephant seals in the Kerguelen province, Southern Ocean Oosthuizen, W. Chris Bester, Marthan N. Tosh, Cheryl A. Guinet, Christophe Besson, Dominique de Bruyn, P.J. Nico Department of Zoology and Entomology Pretoria University of Pretoria South Africa Centre d'Études Biologiques de Chizé (CEBC) Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS) 2011-07-20 https://hal.science/hal-00649921 https://doi.org/10.1017/S0954102011000447 en eng HAL CCSD Cambridge University Press (CUP) info:eu-repo/semantics/altIdentifier/doi/10.1017/S0954102011000447 hal-00649921 https://hal.science/hal-00649921 doi:10.1017/S0954102011000447 ISSN: 0954-1020 EISSN: 1365-2079 Antarctic Science https://hal.science/hal-00649921 Antarctic Science, 2011, 23 (6), pp.567-577. ⟨10.1017/S0954102011000447⟩ gene flow Iles Crozet Iles Kerguelen mark-resighting metapopulation migration Mirounga leonina Marion Island [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2011 ftunivnantes https://doi.org/10.1017/S0954102011000447 2023-02-08T00:36:23Z International audience 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 (n522, on 33 occasions) outnumbered dispersing breeding males (n56, 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 Université de Nantes: HAL-UNIV-NANTES Southern Ocean Kerguelen Indian Antarctic Science 23 6 567 577 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
gene flow Iles Crozet Iles Kerguelen mark-resighting metapopulation migration Mirounga leonina Marion Island [SDE]Environmental Sciences |
spellingShingle |
gene flow Iles Crozet Iles Kerguelen mark-resighting metapopulation migration Mirounga leonina Marion Island [SDE]Environmental Sciences Oosthuizen, W. Chris Bester, Marthan N. Tosh, Cheryl A. Guinet, Christophe Besson, Dominique de Bruyn, P.J. Nico Dispersal and dispersion of southern elephant seals in the Kerguelen province, Southern Ocean |
topic_facet |
gene flow Iles Crozet Iles Kerguelen mark-resighting metapopulation migration Mirounga leonina Marion Island [SDE]Environmental Sciences |
description |
International audience 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 (n522, on 33 occasions) outnumbered dispersing breeding males (n56, 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. |
author2 |
Department of Zoology and Entomology Pretoria University of Pretoria South Africa Centre d'Études Biologiques de Chizé (CEBC) Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Oosthuizen, W. Chris Bester, Marthan N. Tosh, Cheryl A. Guinet, Christophe Besson, Dominique de Bruyn, P.J. Nico |
author_facet |
Oosthuizen, W. Chris Bester, Marthan N. Tosh, Cheryl A. Guinet, Christophe Besson, Dominique de Bruyn, P.J. Nico |
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 |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-00649921 https://doi.org/10.1017/S0954102011000447 |
geographic |
Southern Ocean Kerguelen Indian |
geographic_facet |
Southern Ocean Kerguelen Indian |
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 |
ISSN: 0954-1020 EISSN: 1365-2079 Antarctic Science https://hal.science/hal-00649921 Antarctic Science, 2011, 23 (6), pp.567-577. ⟨10.1017/S0954102011000447⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/S0954102011000447 hal-00649921 https://hal.science/hal-00649921 doi:10.1017/S0954102011000447 |
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_ |
1766287201803436032 |