Abstract
The magnitude of the effect of good genes as a viability benefit accruing to choosy females remains a controversial theoretical and empirical issue. We collected all available data from the literature to estimate the magnitude of good-genes viability effects, while adjusting for sample size. The average correlation coefficient between male traits and offspring survival in 22 studies was 0.122, which differed highly significantly from zero. This implies that male characters chosen by females reveal on average 1.5% of the variance in viability. The studies demonstrated considerable heterogeneity in effect size; some of this heterogeneity could be accounted for by differences among taxa (birds demonstrating stronger effects), and by differences in the degree of mating skew in the species (high skew reflecting stronger effects). Although these results suggest that viability-based sexual selection is widespread across taxa, they indicate that the effect is relatively minor. Finally, there was also an effect of publication year in that the more recent studies reported reduced effects. This may reflect publication biases during paradigm shifts of this debated issue, but it should also be recalled that the studies have only partly estimated the full fitness consequences of mate choice for offspring.
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Selected References
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- Boake C. R. Genetic consequences of mate choice: a quantitative genetic method for testing sexual selection theory. Science. 1985 Mar 1;227(4690):1061–1063. doi: 10.1126/science.227.4690.1061. [DOI] [PubMed] [Google Scholar]
- Gross G. N. Treatment of patients with asthma in the 1990s. Tex Med. 1992 Aug;88(8):58–62. [PubMed] [Google Scholar]
- Hamilton W. D., Zuk M. Heritable true fitness and bright birds: a role for parasites? Science. 1982 Oct 22;218(4570):384–387. doi: 10.1126/science.7123238. [DOI] [PubMed] [Google Scholar]
- Hoikkala A., Aspi J., Suvanto L. Male courtship song frequency as an indicator of male genetic quality in an insect species, Drosophila montana. Proc Biol Sci. 1998 Mar 22;265(1395):503–508. doi: 10.1098/rspb.1998.0323. [DOI] [PMC free article] [PubMed] [Google Scholar]
- MØller Ap, Thornhill R. Male parental care, differential parental investment by females and sexual selection. Anim Behav. 1998 Jun;55(6):1507–1515. doi: 10.1006/anbe.1998.0731. [DOI] [PubMed] [Google Scholar]
- Møller A. P. Male ornament size as a reliable cue to enhanced offspring viability in the barn swallow. Proc Natl Acad Sci U S A. 1994 Jul 19;91(15):6929–6932. doi: 10.1073/pnas.91.15.6929. [DOI] [PMC free article] [PubMed] [Google Scholar]
- doi: 10.1098/rspb.1997.0146. [DOI] [PMC free article] [Google Scholar]
- doi: 10.1098/rspb.1998.0484. [DOI] [PMC free article] [Google Scholar]
- doi: 10.1098/rspb.1998.0574. [DOI] [PMC free article] [Google Scholar]
- Petrie M., Doums C., Moller A. P. The degree of extra-pair paternity increases with genetic variability. Proc Natl Acad Sci U S A. 1998 Aug 4;95(16):9390–9395. doi: 10.1073/pnas.95.16.9390. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Welch A. M., Semlitsch R. D., Gerhardt H. C. Call duration as an indicator of genetic quality in male gray tree frogs. Science. 1998 Jun 19;280(5371):1928–1930. doi: 10.1126/science.280.5371.1928. [DOI] [PubMed] [Google Scholar]
- von Schantz T., Göransson G., Andersson G., Fröberg I., Grahn M., Helgée A., Wittzell H. Female choice selects for a viability-based male trait in pheasants. Nature. 1989 Jan 12;337(6203):166–169. doi: 10.1038/337166a0. [DOI] [PubMed] [Google Scholar]