From the forests to teeth: visual crossdating to refine age estimates in marine mammals
Estimation of the age of individuals is a fundamental parameter for understanding the biology of individuals and ecology of populations. Incremental growth deposits in tooth dentine or cementum, known as growth layer groups (GLGs), have been used to estimate the age of toothed marine mammals (odonto...
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Online Access: | https://eprints.utas.edu.au/24758/ https://doi.org/10.1111/mms.12392 |
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ftunivtasmania:oai:eprints.utas.edu.au:24758 2023-05-15T18:26:46+02:00 From the forests to teeth: visual crossdating to refine age estimates in marine mammals Hamilton, VS Evans, K Hindell, M 2017 https://eprints.utas.edu.au/24758/ https://doi.org/10.1111/mms.12392 unknown Soc Marine Mammalogy Hamilton, VS orcid:0000-0002-4397-6711 , Evans, K and Hindell, M orcid:0000-0002-7823-7185 2017 , 'From the forests to teeth: visual crossdating to refine age estimates in marine mammals' , Marine Mammal Science, vol. 33, no. 3 , pp. 880-888 , doi:10.1111/mms.12392 <http://dx.doi.org/10.1111/mms.12392>. growth layer group (GLG) accessory layer sperm whale crossdating Article PeerReviewed 2017 ftunivtasmania https://doi.org/10.1111/mms.12392 2021-09-06T22:17:36Z Estimation of the age of individuals is a fundamental parameter for understanding the biology of individuals and ecology of populations. Incremental growth deposits in tooth dentine or cementum, known as growth layer groups (GLGs), have been used to estimate the age of toothed marine mammals (odontocetes, pinnipeds) since the 1950s (Scheffer and Myrick 1980). In most species, it is assumed that GLGs are deposited annually (Hohn 2009). Validation of this assumption has only been possible in a small number of marine mammal species (e.g., Bowen et al. 1983, Myrick et al. 1984, Hohn et al. 1989, Lockyer 1993, Oosthuizen 1997), due to impracticalities in obtaining validated ages (Evans et al. 2002, Hohn 2009). For species in which validation of age is not possible, absolute age or the accuracy of age estimates cannot be confirmed (Campana 2001). Further, the precision of estimates (i.e., the closeness of repeat counts from an individual tooth) may not necessarily reflect the best estimate of age and, at present, an objective method to assist with identification of GLGs for age estimation purposes has not been established (Evans et al. 2002, Campana and Stewart 2014). Article in Journal/Newspaper Sperm whale University of Tasmania: UTas ePrints Lockyer ENVELOPE(-57.599,-57.599,-64.447,-64.447) Marine Mammal Science 33 3 880 888 |
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Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
unknown |
topic |
growth layer group (GLG) accessory layer sperm whale crossdating |
spellingShingle |
growth layer group (GLG) accessory layer sperm whale crossdating Hamilton, VS Evans, K Hindell, M From the forests to teeth: visual crossdating to refine age estimates in marine mammals |
topic_facet |
growth layer group (GLG) accessory layer sperm whale crossdating |
description |
Estimation of the age of individuals is a fundamental parameter for understanding the biology of individuals and ecology of populations. Incremental growth deposits in tooth dentine or cementum, known as growth layer groups (GLGs), have been used to estimate the age of toothed marine mammals (odontocetes, pinnipeds) since the 1950s (Scheffer and Myrick 1980). In most species, it is assumed that GLGs are deposited annually (Hohn 2009). Validation of this assumption has only been possible in a small number of marine mammal species (e.g., Bowen et al. 1983, Myrick et al. 1984, Hohn et al. 1989, Lockyer 1993, Oosthuizen 1997), due to impracticalities in obtaining validated ages (Evans et al. 2002, Hohn 2009). For species in which validation of age is not possible, absolute age or the accuracy of age estimates cannot be confirmed (Campana 2001). Further, the precision of estimates (i.e., the closeness of repeat counts from an individual tooth) may not necessarily reflect the best estimate of age and, at present, an objective method to assist with identification of GLGs for age estimation purposes has not been established (Evans et al. 2002, Campana and Stewart 2014). |
format |
Article in Journal/Newspaper |
author |
Hamilton, VS Evans, K Hindell, M |
author_facet |
Hamilton, VS Evans, K Hindell, M |
author_sort |
Hamilton, VS |
title |
From the forests to teeth: visual crossdating to refine age estimates in marine mammals |
title_short |
From the forests to teeth: visual crossdating to refine age estimates in marine mammals |
title_full |
From the forests to teeth: visual crossdating to refine age estimates in marine mammals |
title_fullStr |
From the forests to teeth: visual crossdating to refine age estimates in marine mammals |
title_full_unstemmed |
From the forests to teeth: visual crossdating to refine age estimates in marine mammals |
title_sort |
from the forests to teeth: visual crossdating to refine age estimates in marine mammals |
publisher |
Soc Marine Mammalogy |
publishDate |
2017 |
url |
https://eprints.utas.edu.au/24758/ https://doi.org/10.1111/mms.12392 |
long_lat |
ENVELOPE(-57.599,-57.599,-64.447,-64.447) |
geographic |
Lockyer |
geographic_facet |
Lockyer |
genre |
Sperm whale |
genre_facet |
Sperm whale |
op_relation |
Hamilton, VS orcid:0000-0002-4397-6711 , Evans, K and Hindell, M orcid:0000-0002-7823-7185 2017 , 'From the forests to teeth: visual crossdating to refine age estimates in marine mammals' , Marine Mammal Science, vol. 33, no. 3 , pp. 880-888 , doi:10.1111/mms.12392 <http://dx.doi.org/10.1111/mms.12392>. |
op_doi |
https://doi.org/10.1111/mms.12392 |
container_title |
Marine Mammal Science |
container_volume |
33 |
container_issue |
3 |
container_start_page |
880 |
op_container_end_page |
888 |
_version_ |
1766208733133668352 |