Tracking and data-logging devices attached to elephant seals do not affect individual mass gain or survival
Copyright © 2008 Elsevier B.V. All rights reserved. Understanding the cryptic lives of wide-ranging wild animals such as seals can be challenging, but with the advent of miniaturised telemetry and data-logging devices this is now possible and relatively straightforward. However, because marine anima...
Published in: | Journal of Experimental Marine Biology and Ecology |
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Online Access: | http://hdl.handle.net/2440/48221 https://doi.org/10.1016/j.jembe.2008.03.012 |
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ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/48221 2023-05-15T16:05:21+02:00 Tracking and data-logging devices attached to elephant seals do not affect individual mass gain or survival McMahon, C. Field, I. Bradshaw, C. White, G. Hindell, M. 2008 http://hdl.handle.net/2440/48221 https://doi.org/10.1016/j.jembe.2008.03.012 en eng Elsevier Science BV Journal of Experimental Marine Biology and Ecology, 2008; 360(2):71-77 0022-0981 1879-1697 http://hdl.handle.net/2440/48221 doi:10.1016/j.jembe.2008.03.012 Bradshaw, C. [0000-0002-5328-7741] Journal article 2008 ftunivadelaidedl https://doi.org/10.1016/j.jembe.2008.03.012 2023-02-06T07:19:14Z Copyright © 2008 Elsevier B.V. All rights reserved. Understanding the cryptic lives of wide-ranging wild animals such as seals can be challenging, but with the advent of miniaturised telemetry and data-logging devices this is now possible and relatively straightforward. However, because marine animals have streamline bodies to reduce drag in their aquatic habitats, attaching external devices to their back or head may affect swimming performance, prey capture efficiency and ultimately, fitness. Given this, and allied welfare concerns, we assessed the short- and long-term consequences of external devices attached to southern elephant seal juveniles and adults under varying environmental conditions. We also assessed the effects of multiple deployments on individuals. There was no evidence for short-term differences in at-sea mass gain (measured as mass on arrival from a foraging trip) or long-term survival rate. The number of times that a seal carried a tracking device (ranging from 1 to 8 times) did not affect mass or estimated survival. Further, there were no tracking device effects in years of contrasting environmental conditions measured as ENSO anomalies. Consequently, we conclude that the current tracking devices available to researchers are valuable conservation tools that do not adversely affect the performance of a large marine mammal in terms of mass gain or survival probability over short (seasonal) or long (years) temporal scales. © 2008 Elsevier B.V. All rights reserved. Clive R. McMahon, Iain C. Field, Corey J.A. Bradshaw, Gary C. White and Mark A. Hindell http://www.elsevier.com/wps/find/journaldescription.cws_home/523011/description#description Article in Journal/Newspaper Elephant Seal Elephant Seals Southern Elephant Seal The University of Adelaide: Digital Library Bradshaw ENVELOPE(163.867,163.867,-71.467,-71.467) Corey ENVELOPE(-145.133,-145.133,-76.667,-76.667) McMahon ENVELOPE(65.148,65.148,-70.835,-70.835) Journal of Experimental Marine Biology and Ecology 360 2 71 77 |
institution |
Open Polar |
collection |
The University of Adelaide: Digital Library |
op_collection_id |
ftunivadelaidedl |
language |
English |
description |
Copyright © 2008 Elsevier B.V. All rights reserved. Understanding the cryptic lives of wide-ranging wild animals such as seals can be challenging, but with the advent of miniaturised telemetry and data-logging devices this is now possible and relatively straightforward. However, because marine animals have streamline bodies to reduce drag in their aquatic habitats, attaching external devices to their back or head may affect swimming performance, prey capture efficiency and ultimately, fitness. Given this, and allied welfare concerns, we assessed the short- and long-term consequences of external devices attached to southern elephant seal juveniles and adults under varying environmental conditions. We also assessed the effects of multiple deployments on individuals. There was no evidence for short-term differences in at-sea mass gain (measured as mass on arrival from a foraging trip) or long-term survival rate. The number of times that a seal carried a tracking device (ranging from 1 to 8 times) did not affect mass or estimated survival. Further, there were no tracking device effects in years of contrasting environmental conditions measured as ENSO anomalies. Consequently, we conclude that the current tracking devices available to researchers are valuable conservation tools that do not adversely affect the performance of a large marine mammal in terms of mass gain or survival probability over short (seasonal) or long (years) temporal scales. © 2008 Elsevier B.V. All rights reserved. Clive R. McMahon, Iain C. Field, Corey J.A. Bradshaw, Gary C. White and Mark A. Hindell http://www.elsevier.com/wps/find/journaldescription.cws_home/523011/description#description |
format |
Article in Journal/Newspaper |
author |
McMahon, C. Field, I. Bradshaw, C. White, G. Hindell, M. |
spellingShingle |
McMahon, C. Field, I. Bradshaw, C. White, G. Hindell, M. Tracking and data-logging devices attached to elephant seals do not affect individual mass gain or survival |
author_facet |
McMahon, C. Field, I. Bradshaw, C. White, G. Hindell, M. |
author_sort |
McMahon, C. |
title |
Tracking and data-logging devices attached to elephant seals do not affect individual mass gain or survival |
title_short |
Tracking and data-logging devices attached to elephant seals do not affect individual mass gain or survival |
title_full |
Tracking and data-logging devices attached to elephant seals do not affect individual mass gain or survival |
title_fullStr |
Tracking and data-logging devices attached to elephant seals do not affect individual mass gain or survival |
title_full_unstemmed |
Tracking and data-logging devices attached to elephant seals do not affect individual mass gain or survival |
title_sort |
tracking and data-logging devices attached to elephant seals do not affect individual mass gain or survival |
publisher |
Elsevier Science BV |
publishDate |
2008 |
url |
http://hdl.handle.net/2440/48221 https://doi.org/10.1016/j.jembe.2008.03.012 |
long_lat |
ENVELOPE(163.867,163.867,-71.467,-71.467) ENVELOPE(-145.133,-145.133,-76.667,-76.667) ENVELOPE(65.148,65.148,-70.835,-70.835) |
geographic |
Bradshaw Corey McMahon |
geographic_facet |
Bradshaw Corey McMahon |
genre |
Elephant Seal Elephant Seals Southern Elephant Seal |
genre_facet |
Elephant Seal Elephant Seals Southern Elephant Seal |
op_relation |
Journal of Experimental Marine Biology and Ecology, 2008; 360(2):71-77 0022-0981 1879-1697 http://hdl.handle.net/2440/48221 doi:10.1016/j.jembe.2008.03.012 Bradshaw, C. [0000-0002-5328-7741] |
op_doi |
https://doi.org/10.1016/j.jembe.2008.03.012 |
container_title |
Journal of Experimental Marine Biology and Ecology |
container_volume |
360 |
container_issue |
2 |
container_start_page |
71 |
op_container_end_page |
77 |
_version_ |
1766401252163321856 |