Causes of adult mortality in two populations of New Zealand sea lions (Phocarctos hookeri)
The New Zealand sea lion is an endangered species endemic to New Zealand. While causes of death are well described for pups of this species, mortality in adults is poorly characterised. This study investigated causes of death in 136 New Zealand sea lions in two different populations: a major breedin...
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ftpubmed:oai:pubmedcentral.nih.gov:7386770 2023-05-15T13:58:40+02:00 Causes of adult mortality in two populations of New Zealand sea lions (Phocarctos hookeri) Lenting, B. Gartrell, B. Kokosinska, A. Duignan, P.J. Michael, S. Hunter, S. Roe, W.D. 2019-04-10 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7386770/ https://doi.org/10.1016/j.vas.2019.100057 en eng Elsevier http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7386770/ http://dx.doi.org/10.1016/j.vas.2019.100057 © 2019 The Authors http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). CC-BY-NC-ND Vet Anim Sci Article Text 2019 ftpubmed https://doi.org/10.1016/j.vas.2019.100057 2020-08-02T00:36:48Z The New Zealand sea lion is an endangered species endemic to New Zealand. While causes of death are well described for pups of this species, mortality in adults is poorly characterised. This study investigated causes of death in 136 New Zealand sea lions in two different populations: a major breeding site on remote, uninhabited Enderby Island in the sub-Antarctic, and a slowly increasing recolonising population on the inhabited mainland. For animals with at least a partial diagnostic investigation (n = 112), the most frequently diagnosed causes of mortality were infectious disease (41/112; 37%), particularly tuberculosis due to M. pinnipedii (20/112; 18%), and conspecific trauma (27/112; 24%). Anthropogenic trauma was an important cause of death in mainland sea lions (9/33; 26%). Deliberate anthropogenic mortality has previously been identified as the greatest potential threat to population recovery for mainland sea lions, and as human and pinniped populations increase, managing interactions between these species will become increasingly important. Text Antarc* Antarctic Enderby Island PubMed Central (PMC) Antarctic New Zealand Veterinary and Animal Science 7 100057 |
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Article Lenting, B. Gartrell, B. Kokosinska, A. Duignan, P.J. Michael, S. Hunter, S. Roe, W.D. Causes of adult mortality in two populations of New Zealand sea lions (Phocarctos hookeri) |
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The New Zealand sea lion is an endangered species endemic to New Zealand. While causes of death are well described for pups of this species, mortality in adults is poorly characterised. This study investigated causes of death in 136 New Zealand sea lions in two different populations: a major breeding site on remote, uninhabited Enderby Island in the sub-Antarctic, and a slowly increasing recolonising population on the inhabited mainland. For animals with at least a partial diagnostic investigation (n = 112), the most frequently diagnosed causes of mortality were infectious disease (41/112; 37%), particularly tuberculosis due to M. pinnipedii (20/112; 18%), and conspecific trauma (27/112; 24%). Anthropogenic trauma was an important cause of death in mainland sea lions (9/33; 26%). Deliberate anthropogenic mortality has previously been identified as the greatest potential threat to population recovery for mainland sea lions, and as human and pinniped populations increase, managing interactions between these species will become increasingly important. |
format |
Text |
author |
Lenting, B. Gartrell, B. Kokosinska, A. Duignan, P.J. Michael, S. Hunter, S. Roe, W.D. |
author_facet |
Lenting, B. Gartrell, B. Kokosinska, A. Duignan, P.J. Michael, S. Hunter, S. Roe, W.D. |
author_sort |
Lenting, B. |
title |
Causes of adult mortality in two populations of New Zealand sea lions (Phocarctos hookeri) |
title_short |
Causes of adult mortality in two populations of New Zealand sea lions (Phocarctos hookeri) |
title_full |
Causes of adult mortality in two populations of New Zealand sea lions (Phocarctos hookeri) |
title_fullStr |
Causes of adult mortality in two populations of New Zealand sea lions (Phocarctos hookeri) |
title_full_unstemmed |
Causes of adult mortality in two populations of New Zealand sea lions (Phocarctos hookeri) |
title_sort |
causes of adult mortality in two populations of new zealand sea lions (phocarctos hookeri) |
publisher |
Elsevier |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7386770/ https://doi.org/10.1016/j.vas.2019.100057 |
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Antarctic New Zealand |
geographic_facet |
Antarctic New Zealand |
genre |
Antarc* Antarctic Enderby Island |
genre_facet |
Antarc* Antarctic Enderby Island |
op_source |
Vet Anim Sci |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7386770/ http://dx.doi.org/10.1016/j.vas.2019.100057 |
op_rights |
© 2019 The Authors http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
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CC-BY-NC-ND |
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https://doi.org/10.1016/j.vas.2019.100057 |
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Veterinary and Animal Science |
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7 |
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100057 |
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1766267009608187904 |