Application of a novel method for age estimation of a baleen whale and a porpoise
Abstract Eyeballs from 121 fin whales ( Balaenoptera physalus ) and 83 harbor porpoises ( Phocoena phocoena ) were used for age estimation using the aspartic acid racemization (AAR) technique. The racemization rate ( k A sp ) for fin whales was established from 15 fetuses (age 0) and 15 adult whales...
Published in: | Molecular Biology and Evolution |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2012
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/j.1748-7692.2012.00588.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1748-7692.2012.00588.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1748-7692.2012.00588.x |
id |
crwiley:10.1111/j.1748-7692.2012.00588.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/j.1748-7692.2012.00588.x 2023-12-03T10:19:59+01:00 Application of a novel method for age estimation of a baleen whale and a porpoise Nielsen, Nynne H. Garde, Eva Heide‐Jørgensen, Mads Peter Lockyer, Christina H. Ditlevsen, Susanne Òlafsdóttir, Droplaug Hansen, Steen H. 2012 http://dx.doi.org/10.1111/j.1748-7692.2012.00588.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1748-7692.2012.00588.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1748-7692.2012.00588.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Marine Mammal Science volume 29, issue 2 ISSN 0824-0469 1748-7692 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2012 crwiley https://doi.org/10.1111/j.1748-7692.2012.00588.x 2023-11-09T13:26:54Z Abstract Eyeballs from 121 fin whales ( Balaenoptera physalus ) and 83 harbor porpoises ( Phocoena phocoena ) were used for age estimation using the aspartic acid racemization (AAR) technique. The racemization rate ( k A sp ) for fin whales was established from 15 fetuses (age 0) and 15 adult whales where age was estimated by reading growth layer groups (GLGs) in the earplugs. The ( k A sp ) for harbor porpoises was derived from 15 porpoises (two calves and 13 > 1 yr old) age‐estimated by counting GLGs in the teeth and two calves classified to age based on length. The ( k A sp ) values were estimated by regression of GLGs against D/L ratios. For the fin whales an ( k A sp ) of 1.15 × 10 −3 /yr (SE ± 0.00005) and a D/L ratio at birth [(D/L) 0 ] of 0.028 (SE ± 0.0012) were estimated, which is in agreement with rates for other mysticeti. For the harbor porpoises a ( k A sp ) of 3.10 × 10 −3 /yr (SE ± 0.0004) and a (D/L) 0 value of 0.023 (SE ± 0.0018) were estimated, which is considerably higher than found for other cetaceans. Correlation between chosen age estimates from AAR and GLG counts indicated that AAR might be an alternative method for estimating age in marine mammals. Article in Journal/Newspaper Balaenoptera physalus baleen whale Phocoena phocoena Wiley Online Library (via Crossref) Molecular Biology and Evolution 23 7 1455 1455 |
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 Nielsen, Nynne H. Garde, Eva Heide‐Jørgensen, Mads Peter Lockyer, Christina H. Ditlevsen, Susanne Òlafsdóttir, Droplaug Hansen, Steen H. Application of a novel method for age estimation of a baleen whale and a porpoise |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract Eyeballs from 121 fin whales ( Balaenoptera physalus ) and 83 harbor porpoises ( Phocoena phocoena ) were used for age estimation using the aspartic acid racemization (AAR) technique. The racemization rate ( k A sp ) for fin whales was established from 15 fetuses (age 0) and 15 adult whales where age was estimated by reading growth layer groups (GLGs) in the earplugs. The ( k A sp ) for harbor porpoises was derived from 15 porpoises (two calves and 13 > 1 yr old) age‐estimated by counting GLGs in the teeth and two calves classified to age based on length. The ( k A sp ) values were estimated by regression of GLGs against D/L ratios. For the fin whales an ( k A sp ) of 1.15 × 10 −3 /yr (SE ± 0.00005) and a D/L ratio at birth [(D/L) 0 ] of 0.028 (SE ± 0.0012) were estimated, which is in agreement with rates for other mysticeti. For the harbor porpoises a ( k A sp ) of 3.10 × 10 −3 /yr (SE ± 0.0004) and a (D/L) 0 value of 0.023 (SE ± 0.0018) were estimated, which is considerably higher than found for other cetaceans. Correlation between chosen age estimates from AAR and GLG counts indicated that AAR might be an alternative method for estimating age in marine mammals. |
format |
Article in Journal/Newspaper |
author |
Nielsen, Nynne H. Garde, Eva Heide‐Jørgensen, Mads Peter Lockyer, Christina H. Ditlevsen, Susanne Òlafsdóttir, Droplaug Hansen, Steen H. |
author_facet |
Nielsen, Nynne H. Garde, Eva Heide‐Jørgensen, Mads Peter Lockyer, Christina H. Ditlevsen, Susanne Òlafsdóttir, Droplaug Hansen, Steen H. |
author_sort |
Nielsen, Nynne H. |
title |
Application of a novel method for age estimation of a baleen whale and a porpoise |
title_short |
Application of a novel method for age estimation of a baleen whale and a porpoise |
title_full |
Application of a novel method for age estimation of a baleen whale and a porpoise |
title_fullStr |
Application of a novel method for age estimation of a baleen whale and a porpoise |
title_full_unstemmed |
Application of a novel method for age estimation of a baleen whale and a porpoise |
title_sort |
application of a novel method for age estimation of a baleen whale and a porpoise |
publisher |
Wiley |
publishDate |
2012 |
url |
http://dx.doi.org/10.1111/j.1748-7692.2012.00588.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1748-7692.2012.00588.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1748-7692.2012.00588.x |
genre |
Balaenoptera physalus baleen whale Phocoena phocoena |
genre_facet |
Balaenoptera physalus baleen whale Phocoena phocoena |
op_source |
Marine Mammal Science volume 29, issue 2 ISSN 0824-0469 1748-7692 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1748-7692.2012.00588.x |
container_title |
Molecular Biology and Evolution |
container_volume |
23 |
container_issue |
7 |
container_start_page |
1455 |
op_container_end_page |
1455 |
_version_ |
1784267386060275712 |