Age estimation for young bowhead whales (Balaena mysticetus) using annual baleen growth increments
We compiled age estimates and baleen plate δ 13 C data from 86 bowhead whales ( Balaena mysticetus L., 1758). We used previous whale age estimates based on aspartic acid racemization (AAR) and corpora counts to extend the use of δ 13 C data for age determination from cycle counting to a modified exp...
Published in: | Canadian Journal of Zoology |
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Language: | English |
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Canadian Science Publishing
2008
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Online Access: | http://dx.doi.org/10.1139/z08-028 http://www.nrcresearchpress.com/doi/full-xml/10.1139/Z08-028 http://www.nrcresearchpress.com/doi/pdf/10.1139/Z08-028 |
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crcansciencepubl:10.1139/z08-028 2024-09-15T17:57:10+00:00 Age estimation for young bowhead whales (Balaena mysticetus) using annual baleen growth increments Lubetkin, S. C. Zeh, J. E. Rosa, C. George, J. C. 2008 http://dx.doi.org/10.1139/z08-028 http://www.nrcresearchpress.com/doi/full-xml/10.1139/Z08-028 http://www.nrcresearchpress.com/doi/pdf/10.1139/Z08-028 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 86, issue 6, page 525-538 ISSN 0008-4301 1480-3283 journal-article 2008 crcansciencepubl https://doi.org/10.1139/z08-028 2024-08-08T04:13:41Z We compiled age estimates and baleen plate δ 13 C data from 86 bowhead whales ( Balaena mysticetus L., 1758). We used previous whale age estimates based on aspartic acid racemization (AAR) and corpora counts to extend the use of δ 13 C data for age determination from cycle counting to a modified exponential model using annual baleen growth increments. Our approach used the growth increment data from individual whales in a nonlinear mixed effects model to assess both population-level and whale-specific growth parameters. Although age estimates from baleen-based models become less precise as the whales age, and baleen growth and length near steady state, the growth increment model shows promise in estimating ages of bowhead whales 10–13.5 m long with baleen lengths <250 cm, where other techniques are less precise or the data are scarce. Ages estimated using the growth increment data from such whales ranged from 6.4 to 19.8 years. Article in Journal/Newspaper Balaena mysticetus Canadian Science Publishing Canadian Journal of Zoology 86 6 525 538 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
We compiled age estimates and baleen plate δ 13 C data from 86 bowhead whales ( Balaena mysticetus L., 1758). We used previous whale age estimates based on aspartic acid racemization (AAR) and corpora counts to extend the use of δ 13 C data for age determination from cycle counting to a modified exponential model using annual baleen growth increments. Our approach used the growth increment data from individual whales in a nonlinear mixed effects model to assess both population-level and whale-specific growth parameters. Although age estimates from baleen-based models become less precise as the whales age, and baleen growth and length near steady state, the growth increment model shows promise in estimating ages of bowhead whales 10–13.5 m long with baleen lengths <250 cm, where other techniques are less precise or the data are scarce. Ages estimated using the growth increment data from such whales ranged from 6.4 to 19.8 years. |
format |
Article in Journal/Newspaper |
author |
Lubetkin, S. C. Zeh, J. E. Rosa, C. George, J. C. |
spellingShingle |
Lubetkin, S. C. Zeh, J. E. Rosa, C. George, J. C. Age estimation for young bowhead whales (Balaena mysticetus) using annual baleen growth increments |
author_facet |
Lubetkin, S. C. Zeh, J. E. Rosa, C. George, J. C. |
author_sort |
Lubetkin, S. C. |
title |
Age estimation for young bowhead whales (Balaena mysticetus) using annual baleen growth increments |
title_short |
Age estimation for young bowhead whales (Balaena mysticetus) using annual baleen growth increments |
title_full |
Age estimation for young bowhead whales (Balaena mysticetus) using annual baleen growth increments |
title_fullStr |
Age estimation for young bowhead whales (Balaena mysticetus) using annual baleen growth increments |
title_full_unstemmed |
Age estimation for young bowhead whales (Balaena mysticetus) using annual baleen growth increments |
title_sort |
age estimation for young bowhead whales (balaena mysticetus) using annual baleen growth increments |
publisher |
Canadian Science Publishing |
publishDate |
2008 |
url |
http://dx.doi.org/10.1139/z08-028 http://www.nrcresearchpress.com/doi/full-xml/10.1139/Z08-028 http://www.nrcresearchpress.com/doi/pdf/10.1139/Z08-028 |
genre |
Balaena mysticetus |
genre_facet |
Balaena mysticetus |
op_source |
Canadian Journal of Zoology volume 86, issue 6, page 525-538 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z08-028 |
container_title |
Canadian Journal of Zoology |
container_volume |
86 |
container_issue |
6 |
container_start_page |
525 |
op_container_end_page |
538 |
_version_ |
1810433343810961408 |