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Movements of southern elephant seals (Mirounga leonina) from Davis Base, Antarctica: combining population genetics and tracking data. Polar Biol 2022. [DOI: 10.1007/s00300-022-03058-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
AbstractMarine animals such as the southern elephant seal (Mirounga leonina) rely on a productive marine environment and are vulnerable to oceanic changes that can affect their reproduction and survival rates. Davis Base, Antarctica, acts as a moulting site for southern elephant seals that forage in Prydz Bay, but the mitochondrial haplotype diversity and natal source populations of these seals have not been characterized. In this study, we combined genetic and animal tracking data on these moulting seals to identify levels of mitochondrial haplotype diversity, natal source population, and movement behaviours during foraging and haul-out periods. Using partial sequences of the mitochondrial control region, we identified two major breeding mitochondrial lineages of seals at Davis Base. We found that the majority of the seals originated from breeding stocks within the South Atlantic Ocean and South Indian Ocean. One seal was grouped with the Macquarie Island breeding stock (South Pacific Ocean). The Macquarie Island population, unlike the other two stocks, is decreasing in size. Tracking data revealed long-distance foraging activity of the Macquarie Island seal around Crozet Islands. We speculate that changes to the Antarctic marine environment can result in a shift in foraging and movement strategies, which subsequently affects seal population growth rates.
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Dispersion of a southern elephant seal Mirounga leonina to Possession Island, Namibia. Polar Biol 2022. [DOI: 10.1007/s00300-022-03032-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Elephant seals (Mirounga leonina) at Potter Peninsula, King George Island, Antarctica: genetic variation of the breeding colony and gene flow with other colonies. Polar Biol 2022. [DOI: 10.1007/s00300-021-02996-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jones CW, Risi MM, Bester MN. Local extinction imminent for southern elephant seals Mirounga leonina at their northernmost breeding site, Gough Island—South Atlantic Ocean. Polar Biol 2020. [DOI: 10.1007/s00300-020-02679-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Far away from home: presence of fur seal (Arctocephalus sp.) in the equatorial Atlantic Ocean. Polar Biol 2019. [DOI: 10.1007/s00300-019-02461-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Moon KL, Chown SL, Fraser CI. Reconsidering connectivity in the sub-Antarctic. Biol Rev Camb Philos Soc 2017; 92:2164-2181. [DOI: 10.1111/brv.12327] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 02/09/2017] [Accepted: 02/15/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Katherine L. Moon
- School of Biological Sciences; Monash University; Clayton 3800 Australia
- Fenner School of Environment and Society; Australian National University; Acton 2601 Australia
| | - Steven L. Chown
- School of Biological Sciences; Monash University; Clayton 3800 Australia
| | - Ceridwen I. Fraser
- Fenner School of Environment and Society; Australian National University; Acton 2601 Australia
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Corrigan LJ, Fabiani A, Chauke LF, McMahon CR, Bruyn M, Bester MN, Bastos A, Campagna C, Muelbert MMC, Hoelzel AR. Population differentiation in the context of Holocene climate change for a migratory marine species, the southern elephant seal. J Evol Biol 2016; 29:1667-79. [PMID: 27012933 DOI: 10.1111/jeb.12870] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Revised: 03/03/2016] [Accepted: 03/22/2016] [Indexed: 11/30/2022]
Affiliation(s)
- L. J. Corrigan
- School of Biological and Biomedical Sciences Durham University Durham UK
| | - A. Fabiani
- School of Biological and Biomedical Sciences Durham University Durham UK
- Dipartimento di Biologia Università degli Studi di Roma Tor Vergata Roma Italy
- Elephant Seal Research Group Sea Lion Island Falkland Islands
| | - L. F. Chauke
- School of Biological and Biomedical Sciences Durham University Durham UK
- Department of Zoology and Entomology Mammal Research Institute University of Pretoria Pretoria South Africa
| | - C. R. McMahon
- Sydney Institute of Marine Science Mosman NSW Australia
| | - M. Bruyn
- School of Biological and Biomedical Sciences Durham University Durham UK
| | - M. N. Bester
- Department of Zoology and Entomology Mammal Research Institute University of Pretoria Pretoria South Africa
| | - A. Bastos
- Department of Zoology and Entomology Mammal Research Institute University of Pretoria Pretoria South Africa
| | - C. Campagna
- Marine Program Wildlife Conservation Soc Buenos Aires Argentina
| | - M. M. C. Muelbert
- Instituto de Oceanografia Universidade Federal do Rio Grande Rio Grande Brasil
| | - A. R. Hoelzel
- School of Biological and Biomedical Sciences Durham University Durham UK
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