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.
journal_name
Heredity (Edinb)journal_title
Heredityauthors
Konior M,Keller L,Radwan Jdoi
10.1038/sj.hdy.6800649keywords:
subject
Has Abstractpub_date
2005-06-01 00:00:00pages
577-81issue
6eissn
0018-067Xissn
1365-2540pii
6800649journal_volume
94pub_type
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