DEVELOPMENT AND APPLICATION OF A MASS‐ESTIMATION METHOD FOR WEDDELL SEALS
Abstract Traditional methods of acquiring mass data limit the ability to collect large samples from across populations of some pinnipeds, or to sample without great disturbance to the animals. In order to collect substantial samples of mass data from the Weddell seal ( Leptonychotes weddellii ) popu...
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crwiley:10.1111/j.1748-7692.2006.00039.x 2023-12-03T10:12:16+01:00 DEVELOPMENT AND APPLICATION OF A MASS‐ESTIMATION METHOD FOR WEDDELL SEALS Ireland, Darren Garrott, Robert A. Rotella, Jay Banfield, Jeff 2006 http://dx.doi.org/10.1111/j.1748-7692.2006.00039.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1748-7692.2006.00039.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1748-7692.2006.00039.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Marine Mammal Science volume 22, issue 2, page 361-378 ISSN 0824-0469 1748-7692 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2006 crwiley https://doi.org/10.1111/j.1748-7692.2006.00039.x 2023-11-09T14:20:10Z Abstract Traditional methods of acquiring mass data limit the ability to collect large samples from across populations of some pinnipeds, or to sample without great disturbance to the animals. In order to collect substantial samples of mass data from the Weddell seal ( Leptonychotes weddellii ) population in Erebus Bay, Antarctica, we developed the equipment and methods for estimating the mass of Weddell seals using digital photographs. Resulting regression models predict the mass of adult female seals to within ±13.8% of estimated mass, and ±25.9% of estimated mass for pups. We show the protocols developed are repeatable and efficient enough to be applied to a large number of animals in a relatively short period of time and may be useful for studies of other marine mammals. We caution that prediction intervals exist around mass estimates and must be accounted for when estimates are applied to biological questions. In a limited application of the method, differences in mass transfer between experienced and inexperienced maternal females and their pups were detected when prediction error variance around mass estimates was explicitly included. Similar mass‐estimation methods may therefore be useful in consideration of biological questions requiring large samples of mass previously unattainable. Article in Journal/Newspaper Antarc* Antarctica Weddell Seal Weddell Seals Wiley Online Library (via Crossref) Weddell Erebus Bay ENVELOPE(166.517,166.517,-77.733,-77.733) Marine Mammal Science 22 2 361 378 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Ireland, Darren Garrott, Robert A. Rotella, Jay Banfield, Jeff DEVELOPMENT AND APPLICATION OF A MASS‐ESTIMATION METHOD FOR WEDDELL SEALS |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract Traditional methods of acquiring mass data limit the ability to collect large samples from across populations of some pinnipeds, or to sample without great disturbance to the animals. In order to collect substantial samples of mass data from the Weddell seal ( Leptonychotes weddellii ) population in Erebus Bay, Antarctica, we developed the equipment and methods for estimating the mass of Weddell seals using digital photographs. Resulting regression models predict the mass of adult female seals to within ±13.8% of estimated mass, and ±25.9% of estimated mass for pups. We show the protocols developed are repeatable and efficient enough to be applied to a large number of animals in a relatively short period of time and may be useful for studies of other marine mammals. We caution that prediction intervals exist around mass estimates and must be accounted for when estimates are applied to biological questions. In a limited application of the method, differences in mass transfer between experienced and inexperienced maternal females and their pups were detected when prediction error variance around mass estimates was explicitly included. Similar mass‐estimation methods may therefore be useful in consideration of biological questions requiring large samples of mass previously unattainable. |
format |
Article in Journal/Newspaper |
author |
Ireland, Darren Garrott, Robert A. Rotella, Jay Banfield, Jeff |
author_facet |
Ireland, Darren Garrott, Robert A. Rotella, Jay Banfield, Jeff |
author_sort |
Ireland, Darren |
title |
DEVELOPMENT AND APPLICATION OF A MASS‐ESTIMATION METHOD FOR WEDDELL SEALS |
title_short |
DEVELOPMENT AND APPLICATION OF A MASS‐ESTIMATION METHOD FOR WEDDELL SEALS |
title_full |
DEVELOPMENT AND APPLICATION OF A MASS‐ESTIMATION METHOD FOR WEDDELL SEALS |
title_fullStr |
DEVELOPMENT AND APPLICATION OF A MASS‐ESTIMATION METHOD FOR WEDDELL SEALS |
title_full_unstemmed |
DEVELOPMENT AND APPLICATION OF A MASS‐ESTIMATION METHOD FOR WEDDELL SEALS |
title_sort |
development and application of a mass‐estimation method for weddell seals |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1111/j.1748-7692.2006.00039.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1748-7692.2006.00039.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1748-7692.2006.00039.x |
long_lat |
ENVELOPE(166.517,166.517,-77.733,-77.733) |
geographic |
Weddell Erebus Bay |
geographic_facet |
Weddell Erebus Bay |
genre |
Antarc* Antarctica Weddell Seal Weddell Seals |
genre_facet |
Antarc* Antarctica Weddell Seal Weddell Seals |
op_source |
Marine Mammal Science volume 22, issue 2, page 361-378 ISSN 0824-0469 1748-7692 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1748-7692.2006.00039.x |
container_title |
Marine Mammal Science |
container_volume |
22 |
container_issue |
2 |
container_start_page |
361 |
op_container_end_page |
378 |
_version_ |
1784258813730226176 |