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...
Published in: | Veterinary and Animal Science |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2019
|
Subjects: | |
Online Access: | https://doi.org/10.1016/j.vas.2019.100057 https://doaj.org/article/6ccdabe6d42f48349d9b2e366f5424a0 |
id |
ftdoajarticles:oai:doaj.org/article:6ccdabe6d42f48349d9b2e366f5424a0 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:6ccdabe6d42f48349d9b2e366f5424a0 2023-05-15T14:00:32+02:00 Causes of adult mortality in two populations of New Zealand sea lions (Phocarctos hookeri) B. Lenting B. Gartrell A. Kokosinska P.J. Duignan S. Michael S. Hunter W.D. Roe 2019-06-01T00:00:00Z https://doi.org/10.1016/j.vas.2019.100057 https://doaj.org/article/6ccdabe6d42f48349d9b2e366f5424a0 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S2451943X18302539 https://doaj.org/toc/2451-943X 2451-943X doi:10.1016/j.vas.2019.100057 https://doaj.org/article/6ccdabe6d42f48349d9b2e366f5424a0 Veterinary and Animal Science, Vol 7, Iss , Pp - (2019) Veterinary medicine SF600-1100 article 2019 ftdoajarticles https://doi.org/10.1016/j.vas.2019.100057 2022-12-31T16:02:09Z 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. Keywords: Pinniped, Sea lion, Anthropogenic, Infectious disease, Mortality, Tuberculosis Article in Journal/Newspaper Antarc* Antarctic Enderby Island Directory of Open Access Journals: DOAJ Articles Antarctic New Zealand Veterinary and Animal Science 7 100057 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Veterinary medicine SF600-1100 |
spellingShingle |
Veterinary medicine SF600-1100 B. Lenting B. Gartrell A. Kokosinska P.J. Duignan S. Michael S. Hunter W.D. Roe Causes of adult mortality in two populations of New Zealand sea lions (Phocarctos hookeri) |
topic_facet |
Veterinary medicine SF600-1100 |
description |
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. Keywords: Pinniped, Sea lion, Anthropogenic, Infectious disease, Mortality, Tuberculosis |
format |
Article in Journal/Newspaper |
author |
B. Lenting B. Gartrell A. Kokosinska P.J. Duignan S. Michael S. Hunter W.D. Roe |
author_facet |
B. Lenting B. Gartrell A. Kokosinska P.J. Duignan S. Michael S. Hunter W.D. Roe |
author_sort |
B. Lenting |
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 |
https://doi.org/10.1016/j.vas.2019.100057 https://doaj.org/article/6ccdabe6d42f48349d9b2e366f5424a0 |
geographic |
Antarctic New Zealand |
geographic_facet |
Antarctic New Zealand |
genre |
Antarc* Antarctic Enderby Island |
genre_facet |
Antarc* Antarctic Enderby Island |
op_source |
Veterinary and Animal Science, Vol 7, Iss , Pp - (2019) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2451943X18302539 https://doaj.org/toc/2451-943X 2451-943X doi:10.1016/j.vas.2019.100057 https://doaj.org/article/6ccdabe6d42f48349d9b2e366f5424a0 |
op_doi |
https://doi.org/10.1016/j.vas.2019.100057 |
container_title |
Veterinary and Animal Science |
container_volume |
7 |
container_start_page |
100057 |
_version_ |
1766269705118547968 |