|Appears in Collections:||Psychology Journal Articles|
|Peer Review Status:||Refereed|
|Title:||African elephant age determination from teeth: validation from known individuals|
|Author(s):||Lee, Phyllis C|
Moss, Cynthia J
|Keywords:||elephant age determination|
jaw sex determination
African elephant Behavior
African elephant Ecology
|Citation:||Lee PC, Sayialel S, Lindsay K & Moss CJ (2012) African elephant age determination from teeth: validation from known individuals. African Journal of Ecology, 50 (1), pp. 9-20. https://doi.org/10.1111/j.1365-2028.2011.01286.x|
|Abstract:||We assess tooth-based age criteria for African elephants developed by Laws in relation to known-aged individuals in the Amboseli elephant population. Laws's technique remains a robust and useful mechanism for age determination, although we suggest revisions to the oldest age categories. Blind age assignment to jaws of unknown sex using the Laws criteria resulted in misclassification of M4 and M5; measures overlapped too much to differentiate these teeth by sex. Sexes could be reliably distinguished after age 30 or XIX in tooth category by two measures: mandible thickness and width of the ascending ramus, but individuals of the same known age differed in tooth wear and progression rates. Such variation needs to be incorporated in the error assigned to tooth age categories. Ages at death of found jaws (n = 266) were similar to results of survival analysis from all demographic data (n = 2455), excluding calves whose jaws decompose because of weathering and scavengers. Jaw-based models of age at death need correction for the inability to detect this early mortality, which artificially extends mean longevity by up to 6 years.|
|Rights:||The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author; you can only request a copy if you wish to use this work for your own research or private study.|
|LEE African elephant age determination from teeth validation from known inviduals.pdf||Fulltext - Published Version||327.98 kB||Adobe PDF||Under Permanent Embargo Request a copy|
Note: If any of the files in this item are currently embargoed, you can request a copy directly from the author by clicking the padlock icon above. However, this facility is dependent on the depositor still being contactable at their original email address.
This item is protected by original copyright
Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.
The metadata of the records in the Repository are available under the CC0 public domain dedication: No Rights Reserved https://creativecommons.org/publicdomain/zero/1.0/
If you believe that any material held in STORRE infringes copyright, please contact email@example.com providing details and we will remove the Work from public display in STORRE and investigate your claim.