AGE‐LENGTH RELATIONSHIPS IN HUMPBACK WHALES: A COMPARISON OF STRANDINGS IN THE WESTERN NORTH ATLANTIC WITH COMMERCIAL CATCHES
A bstract Strandings of previously identified individuals, while rare, provide an opportunity to examine age‐length relationships in humpback whales ( Megaptera novacangliae ) from the North Atlantic. Ages and lengths of 23 individuals are presented: 11 females and 12 males, 9 of known age and 14 wi...
Published in: | Marine Mammal Science |
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crwiley:10.1111/j.1748-7692.1999.tb00839.x 2024-09-15T18:11:14+00:00 AGE‐LENGTH RELATIONSHIPS IN HUMPBACK WHALES: A COMPARISON OF STRANDINGS IN THE WESTERN NORTH ATLANTIC WITH COMMERCIAL CATCHES Stevick, Peter T. 1999 http://dx.doi.org/10.1111/j.1748-7692.1999.tb00839.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1748-7692.1999.tb00839.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1748-7692.1999.tb00839.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Marine Mammal Science volume 15, issue 3, page 725-737 ISSN 0824-0469 1748-7692 journal-article 1999 crwiley https://doi.org/10.1111/j.1748-7692.1999.tb00839.x 2024-08-06T04:18:09Z A bstract Strandings of previously identified individuals, while rare, provide an opportunity to examine age‐length relationships in humpback whales ( Megaptera novacangliae ) from the North Atlantic. Ages and lengths of 23 individuals are presented: 11 females and 12 males, 9 of known age and 14 with estimated minimum ages. Lengths ranged from 853 to 1, 430 cm, ages 0.5–17 yr. These individuals were generally smaller and more variable in size at age than reported from commercial catches. Fifteen of the stranded individuals were four years of age or younger, while few of the animals taken by whalers were this young, and these probably represented the larger individuals in these age categories. Thus the data presented herein help to give more definition to the early growth curve for the humpback whale than has previously been available. Growth equations illustrate a difference of about one meter in asymptotic length through age five between stranding and catch data. The close fit of growth models to data from younger and older animals separately and the difficulty of fitting a single growth model to animals of all ages, could indicate that a dynamic or staged growth pattern exists in this species. Article in Journal/Newspaper Humpback Whale North Atlantic Wiley Online Library Marine Mammal Science 15 3 725 737 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
A bstract Strandings of previously identified individuals, while rare, provide an opportunity to examine age‐length relationships in humpback whales ( Megaptera novacangliae ) from the North Atlantic. Ages and lengths of 23 individuals are presented: 11 females and 12 males, 9 of known age and 14 with estimated minimum ages. Lengths ranged from 853 to 1, 430 cm, ages 0.5–17 yr. These individuals were generally smaller and more variable in size at age than reported from commercial catches. Fifteen of the stranded individuals were four years of age or younger, while few of the animals taken by whalers were this young, and these probably represented the larger individuals in these age categories. Thus the data presented herein help to give more definition to the early growth curve for the humpback whale than has previously been available. Growth equations illustrate a difference of about one meter in asymptotic length through age five between stranding and catch data. The close fit of growth models to data from younger and older animals separately and the difficulty of fitting a single growth model to animals of all ages, could indicate that a dynamic or staged growth pattern exists in this species. |
format |
Article in Journal/Newspaper |
author |
Stevick, Peter T. |
spellingShingle |
Stevick, Peter T. AGE‐LENGTH RELATIONSHIPS IN HUMPBACK WHALES: A COMPARISON OF STRANDINGS IN THE WESTERN NORTH ATLANTIC WITH COMMERCIAL CATCHES |
author_facet |
Stevick, Peter T. |
author_sort |
Stevick, Peter T. |
title |
AGE‐LENGTH RELATIONSHIPS IN HUMPBACK WHALES: A COMPARISON OF STRANDINGS IN THE WESTERN NORTH ATLANTIC WITH COMMERCIAL CATCHES |
title_short |
AGE‐LENGTH RELATIONSHIPS IN HUMPBACK WHALES: A COMPARISON OF STRANDINGS IN THE WESTERN NORTH ATLANTIC WITH COMMERCIAL CATCHES |
title_full |
AGE‐LENGTH RELATIONSHIPS IN HUMPBACK WHALES: A COMPARISON OF STRANDINGS IN THE WESTERN NORTH ATLANTIC WITH COMMERCIAL CATCHES |
title_fullStr |
AGE‐LENGTH RELATIONSHIPS IN HUMPBACK WHALES: A COMPARISON OF STRANDINGS IN THE WESTERN NORTH ATLANTIC WITH COMMERCIAL CATCHES |
title_full_unstemmed |
AGE‐LENGTH RELATIONSHIPS IN HUMPBACK WHALES: A COMPARISON OF STRANDINGS IN THE WESTERN NORTH ATLANTIC WITH COMMERCIAL CATCHES |
title_sort |
age‐length relationships in humpback whales: a comparison of strandings in the western north atlantic with commercial catches |
publisher |
Wiley |
publishDate |
1999 |
url |
http://dx.doi.org/10.1111/j.1748-7692.1999.tb00839.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1748-7692.1999.tb00839.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1748-7692.1999.tb00839.x |
genre |
Humpback Whale North Atlantic |
genre_facet |
Humpback Whale North Atlantic |
op_source |
Marine Mammal Science volume 15, issue 3, page 725-737 ISSN 0824-0469 1748-7692 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1748-7692.1999.tb00839.x |
container_title |
Marine Mammal Science |
container_volume |
15 |
container_issue |
3 |
container_start_page |
725 |
op_container_end_page |
737 |
_version_ |
1810448815914745856 |