Captive killer whale ( Orcinus orca ) survival
Abstract Killer whales ( Orcinus orca ) were first placed into captivity in 1961 and are now found in theme parks around the world. Despite successful breeding of captive killer whales since 1985 there is growing concern for their welfare in captivity, which often includes claims of poor survival. W...
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crwiley:10.1111/mms.12225 2023-12-03T10:25:22+01:00 Captive killer whale ( Orcinus orca ) survival Jett, John Ventre, Jeffrey 2015 http://dx.doi.org/10.1111/mms.12225 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmms.12225 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mms.12225 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mms.12225 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Marine Mammal Science volume 31, issue 4, page 1362-1377 ISSN 0824-0469 1748-7692 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2015 crwiley https://doi.org/10.1111/mms.12225 2023-11-09T14:11:52Z Abstract Killer whales ( Orcinus orca ) were first placed into captivity in 1961 and are now found in theme parks around the world. Despite successful breeding of captive killer whales since 1985 there is growing concern for their welfare in captivity, which often includes claims of poor survival. We employed Kaplan‐Meier and Cox Proportional hazards models and annual survival rate analyses on 201 captive killer whales to discern how sex, facility (U.S. vs . foreign), captive‐born vs . wild‐captured, pre‐ vs . post‐1 January 1985, and animal age upon entering captivity affect survival. Overall median survival estimate was 6.1 yr, with no difference between male and female survival. Killer whales in U.S. facilities (12.0 yr) demonstrated a significantly higher median survival than those in foreign facilities (4.4 yr), as did whales entering captivity post‐1 January 1985 (11.8 yr) vs . those entering prior to 1 January 1985 (3.9 yr). Median survival for captive‐born (14.1 yr) was significantly higher than wild‐captured killer whales (5.5 yr), though the two failed to differ among the post‐1 January 1985 cohort. Facility location and pre‐ vs . post‐1 January 1985 were predictors of the hazard rate. Survival of captive killer whale cohorts has generally improved through time, although survival to age milestones are poor when compared to wild killer whales. Article in Journal/Newspaper Killer Whale Orca Orcinus orca Killer whale Wiley Online Library (via Crossref) Meier ENVELOPE(-45.900,-45.900,-60.633,-60.633) Marine Mammal Science 31 4 1362 1377 |
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Wiley Online Library (via Crossref) |
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crwiley |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
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Aquatic Science Ecology, Evolution, Behavior and Systematics Jett, John Ventre, Jeffrey Captive killer whale ( Orcinus orca ) survival |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract Killer whales ( Orcinus orca ) were first placed into captivity in 1961 and are now found in theme parks around the world. Despite successful breeding of captive killer whales since 1985 there is growing concern for their welfare in captivity, which often includes claims of poor survival. We employed Kaplan‐Meier and Cox Proportional hazards models and annual survival rate analyses on 201 captive killer whales to discern how sex, facility (U.S. vs . foreign), captive‐born vs . wild‐captured, pre‐ vs . post‐1 January 1985, and animal age upon entering captivity affect survival. Overall median survival estimate was 6.1 yr, with no difference between male and female survival. Killer whales in U.S. facilities (12.0 yr) demonstrated a significantly higher median survival than those in foreign facilities (4.4 yr), as did whales entering captivity post‐1 January 1985 (11.8 yr) vs . those entering prior to 1 January 1985 (3.9 yr). Median survival for captive‐born (14.1 yr) was significantly higher than wild‐captured killer whales (5.5 yr), though the two failed to differ among the post‐1 January 1985 cohort. Facility location and pre‐ vs . post‐1 January 1985 were predictors of the hazard rate. Survival of captive killer whale cohorts has generally improved through time, although survival to age milestones are poor when compared to wild killer whales. |
format |
Article in Journal/Newspaper |
author |
Jett, John Ventre, Jeffrey |
author_facet |
Jett, John Ventre, Jeffrey |
author_sort |
Jett, John |
title |
Captive killer whale ( Orcinus orca ) survival |
title_short |
Captive killer whale ( Orcinus orca ) survival |
title_full |
Captive killer whale ( Orcinus orca ) survival |
title_fullStr |
Captive killer whale ( Orcinus orca ) survival |
title_full_unstemmed |
Captive killer whale ( Orcinus orca ) survival |
title_sort |
captive killer whale ( orcinus orca ) survival |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1111/mms.12225 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmms.12225 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mms.12225 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mms.12225 |
long_lat |
ENVELOPE(-45.900,-45.900,-60.633,-60.633) |
geographic |
Meier |
geographic_facet |
Meier |
genre |
Killer Whale Orca Orcinus orca Killer whale |
genre_facet |
Killer Whale Orca Orcinus orca Killer whale |
op_source |
Marine Mammal Science volume 31, issue 4, page 1362-1377 ISSN 0824-0469 1748-7692 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/mms.12225 |
container_title |
Marine Mammal Science |
container_volume |
31 |
container_issue |
4 |
container_start_page |
1362 |
op_container_end_page |
1377 |
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1784274205041229824 |