Age estimation for bowhead whales (Balaena mysticetus) using aspartic acid racemisation with enhanced hydrolysis and derivatisation procedures
Accurate determination of the ages of individual whales is key to developing effective conservation strategies for the bowhead whale (Balaena mysticetus). Previous attempts to develop reliable methods of age determination for this species have included using body length and baleen length measurement...
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International Whaling Commission
2017
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ftunivqespace:oai:espace.library.uq.edu.au:UQ:cfb267f 2023-05-15T15:35:57+02:00 Age estimation for bowhead whales (Balaena mysticetus) using aspartic acid racemisation with enhanced hydrolysis and derivatisation procedures Wetzel, D. L. Reynolds, J. E. Mercurio, P. Givens, G. H. Pulster, E. L. George, J. C. 2017-01-01 https://espace.library.uq.edu.au/view/UQ:cfb267f eng eng International Whaling Commission issn:1561-0713 17350 Age Determination Bowhead Whale 1103 Animal Science and Zoology 1104 Aquatic Science 1105 Ecology Evolution Behavior and Systematics Journal Article 2017 ftunivqespace 2020-08-06T18:08:43Z Accurate determination of the ages of individual whales is key to developing effective conservation strategies for the bowhead whale (Balaena mysticetus). Previous attempts to develop reliable methods of age determination for this species have included using body length and baleen length measurements, baleen carbon cycling analysis, assessments of corpora accumulation, and aspartic acid racemisation (AAR; conversion of L to D enantiomers) measurements. Each of these methods has its limitations. The primary objective of this study was to improve the AAR analysis technique for determining age in bowhead whales in order to obtain consistent, reproducible results for D/L ratios for estimated ages. Using a modified AAR method, lenses from 68 bowhead whales were analysed and ages estimated. A comparison of the results to previous ageing by corpora counting or baleen carbon cycling methods for 11 of the whales showed smaller standard errors for the AAR analyses. The modified AAR methods applied in this study increase the precision of D/L measurements and provide improved bowhead whale AAR results. Article in Journal/Newspaper Balaena mysticetus bowhead whale The University of Queensland: UQ eSpace |
institution |
Open Polar |
collection |
The University of Queensland: UQ eSpace |
op_collection_id |
ftunivqespace |
language |
English |
topic |
Age Determination Bowhead Whale 1103 Animal Science and Zoology 1104 Aquatic Science 1105 Ecology Evolution Behavior and Systematics |
spellingShingle |
Age Determination Bowhead Whale 1103 Animal Science and Zoology 1104 Aquatic Science 1105 Ecology Evolution Behavior and Systematics Wetzel, D. L. Reynolds, J. E. Mercurio, P. Givens, G. H. Pulster, E. L. George, J. C. Age estimation for bowhead whales (Balaena mysticetus) using aspartic acid racemisation with enhanced hydrolysis and derivatisation procedures |
topic_facet |
Age Determination Bowhead Whale 1103 Animal Science and Zoology 1104 Aquatic Science 1105 Ecology Evolution Behavior and Systematics |
description |
Accurate determination of the ages of individual whales is key to developing effective conservation strategies for the bowhead whale (Balaena mysticetus). Previous attempts to develop reliable methods of age determination for this species have included using body length and baleen length measurements, baleen carbon cycling analysis, assessments of corpora accumulation, and aspartic acid racemisation (AAR; conversion of L to D enantiomers) measurements. Each of these methods has its limitations. The primary objective of this study was to improve the AAR analysis technique for determining age in bowhead whales in order to obtain consistent, reproducible results for D/L ratios for estimated ages. Using a modified AAR method, lenses from 68 bowhead whales were analysed and ages estimated. A comparison of the results to previous ageing by corpora counting or baleen carbon cycling methods for 11 of the whales showed smaller standard errors for the AAR analyses. The modified AAR methods applied in this study increase the precision of D/L measurements and provide improved bowhead whale AAR results. |
format |
Article in Journal/Newspaper |
author |
Wetzel, D. L. Reynolds, J. E. Mercurio, P. Givens, G. H. Pulster, E. L. George, J. C. |
author_facet |
Wetzel, D. L. Reynolds, J. E. Mercurio, P. Givens, G. H. Pulster, E. L. George, J. C. |
author_sort |
Wetzel, D. L. |
title |
Age estimation for bowhead whales (Balaena mysticetus) using aspartic acid racemisation with enhanced hydrolysis and derivatisation procedures |
title_short |
Age estimation for bowhead whales (Balaena mysticetus) using aspartic acid racemisation with enhanced hydrolysis and derivatisation procedures |
title_full |
Age estimation for bowhead whales (Balaena mysticetus) using aspartic acid racemisation with enhanced hydrolysis and derivatisation procedures |
title_fullStr |
Age estimation for bowhead whales (Balaena mysticetus) using aspartic acid racemisation with enhanced hydrolysis and derivatisation procedures |
title_full_unstemmed |
Age estimation for bowhead whales (Balaena mysticetus) using aspartic acid racemisation with enhanced hydrolysis and derivatisation procedures |
title_sort |
age estimation for bowhead whales (balaena mysticetus) using aspartic acid racemisation with enhanced hydrolysis and derivatisation procedures |
publisher |
International Whaling Commission |
publishDate |
2017 |
url |
https://espace.library.uq.edu.au/view/UQ:cfb267f |
genre |
Balaena mysticetus bowhead whale |
genre_facet |
Balaena mysticetus bowhead whale |
op_relation |
issn:1561-0713 17350 |
_version_ |
1766366296533893120 |