| Inbreeding tolerance and fitness costs in wild bottlenose dolphins. | |
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MedLine Citation:
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PMID: 20392729 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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Céline H Frère; Michael Krützen; Anna M Kopps; Patrick Ward; Janet Mann; William B Sherwin |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. Date: 2010-04-14 |
Journal Detail:
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Title: Proceedings. Biological sciences / The Royal Society Volume: 277 ISSN: 1471-2954 ISO Abbreviation: Proc. Biol. Sci. Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-07-28 Completed Date: 2010-12-02 Revised Date: 2011-09-13 |
Medline Journal Info:
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Nlm Unique ID: 101245157 Medline TA: Proc Biol Sci Country: England |
Other Details:
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Languages: eng Pagination: 2667-73 Citation Subset: IM |
Affiliation:
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School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, New South Wales 2052, Australia. c.frere@uq.edu.au |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Age Factors Animals Bottle-Nosed Dolphin / genetics*, physiology Female Genotype Inbreeding* Male Reproduction / physiology Sexual Behavior, Animal* Weaning |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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