Aspartic acid racemization rate in narwhal (Monodon monoceros) eye lens nuclei estimated by counting of growth layers in tusks

Ages of marine mammals have traditionally been estimated by counting dentinal growth layers in teeth. However, this method is difficult to use on narwhals (Monodon monoceros) because of their special tooth structures. Alternative methods are therefore needed. The aspartic acid racemization (AAR) tec...

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Bibliographic Details
Main Authors: Eva Garde, Susanne Ditlevsen, Steen H. Hansen, Mads Peter Heide-Jørgensen
Format: Article
Language:English
Published: Norwegian Polar Institute 2012-11-01
Series:Polar Research
Subjects:
Online Access:http://www.polarresearch.net/index.php/polar/article/view/15865/pdf_1