Inbreeding tolerance and fitness costs in wild bottlenose dolphins

Frere, Céline H., Krutzen, Michael, Kopps, Anna M., Ward, Patrick, Mann, Janet and Sherwin, William B. (2010) Inbreeding tolerance and fitness costs in wild bottlenose dolphins. Proceedings of The Royal Society B-Biological Sciences, 277 1694: 2667-2673. doi:10.1098/rspb.2010.0039

Author Frere, Céline H.
Krutzen, Michael
Kopps, Anna M.
Ward, Patrick
Mann, Janet
Sherwin, William B.
Title Inbreeding tolerance and fitness costs in wild bottlenose dolphins
Journal name Proceedings of The Royal Society B-Biological Sciences   Check publisher's open access policy
ISSN 0950-1193
Publication date 2010-09
Sub-type Article (original research)
DOI 10.1098/rspb.2010.0039
Volume 277
Issue 1694
Start page 2667
End page 2673
Total pages 7
Place of publication United Kingdom
Publisher The Royal Society Publishing
Collection year 2011
Language eng
Subject C1
970106 Expanding Knowledge in the Biological Sciences
060207 Population Ecology
Abstract In wild populations, inbreeding tolerance is expected to evolve where the cost of avoidance exceeds that of tolerance. We show that in a wild population of bottlenose dolphins found in East Shark Bay, Western Australia, levels of inbreeding are higher than expected by chance alone, and demonstrate that inbreeding is deleterious to female fitness in two independent ways. We found that inbred females, and females with inbred calves, have reduced fitness (lower calving success). We further show that one of the costs of inbreeding is extended weaning age, and that females' earlier calves are more likely to be inbred. While the exact causes of inbreeding remain obscure, our results indicate that one factor is female age, and thus experience. Any inbreeding avoidance mechanisms such as female evasion of kin, or male dispersal, do not seem to be completely effective in this population, which supports the view that inbreeding avoidance does not always evolve wherever inbreeding incurs a cost. © 2010 The Royal Society.
Keyword Inbreeding
Inbreeding depression
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
School of Biological Sciences Publications
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Created: Sun, 08 Aug 2010, 00:01:20 EST