Effect of inbreeding and heritability of sperm competition success in the bulb mite Rhizoglyphus robini

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Type
Article: article from journal or magazin.
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Publications
Institution
Title
Effect of inbreeding and heritability of sperm competition success in the bulb mite Rhizoglyphus robini
Journal
Heredity
Author(s)
Konior  M., Keller  L., Radwan  J.
ISSN
0018-067X
Publication state
Published
Issued date
06/2005
Peer-reviewed
Oui
Volume
94
Number
6
Pages
577-81
Notes
Journal Article Research Support, Non-U.S. Gov't --- Old month value: Jun
Abstract
Sperm competition is a potent evolutionary force shaping the reproductive biology of most animal species. Here, we estimated the heritability of sperm competition success in the promiscuous bulb mite Rhizoglyphus robini. Sperm competition success was measured with the sterile male technique as the proportion of eggs fertilised by the second of three males mated with a single female. Sperm competition success responded significantly to selection. The heritability estimated from the response to five generations of selection was 0.13. We also estimated the effect of inbreeding on sperm competition success. Males produced by sib-mating (F=0.25) had a significantly lower sperm competition success than outbred males. The estimated coefficient of inbreeding depression was 0.53. Such high inbreeding depression together with moderately low heritability is consistent with the view that sperm competitive ability is under strong directional selection and strongly influences the reproductive success of males.
Keywords
Acaridae/*genetics/physiology Animals Female *Inbreeding Male Selection (Genetics) Sexual Behavior, Animal Spermatozoa/*physiology Variation (Genetics)
Pubmed
Web of science
Open Access
Yes
Create date
24/01/2008 18:40
Last modification date
20/08/2019 13:45
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