Negative genetic correlation between male sexual attractiveness and survival
Brooks, Robert (2000) Negative genetic correlation between male sexual attractiveness and survival. Nature, 406 (6791). pp. 67-70.
|PDF (Published Version) - Repository staff only - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader|
View at Publisher Website: http://dx.doi.org/10.1038/35017552
[Extract] Indirect selection of female mating preferences may result from a genetic association between male attractiveness and offspring fitness1, 2. The offspring of attractive males may have enhanced growth3, 4, 5, fecundity3, 4, viability5, 6, 7, 8 or attractiveness4, 9, 10, 11. However, the extent to which attractive males bear genes that reduce other fitness components has remained unexplored. Here I show that sexual attractiveness in male guppies (Poecilia reticulata) is heritable and genetically correlated with ornamentation. Like ornamentation12, 13, 14, attractiveness may be substantially Y-linked. The benefit of mating with attractive males, and thus having attractive sons, is opposed by strong negative genetic correlation between attractiveness and both offspring survival and the number of sons maturing. Such correlations suggest either antagonistic pleiotropy between attractiveness and survival or linkage disequilibrium between attractive and deleterious alleles. The presence of many colour pattern genes on or near the non-recombining section of the Y chromosome may facilitate the accumulation of deleterious mutations by genetic hitch-hiking15, 16. These findings show that genes enhancing sexual attractiveness may be associated with pleiotropic costs or heavy mutational loads.
|Item Type:||Article (Refereed Research - C1)|
|FoR Codes:||06 BIOLOGICAL SCIENCES > 0699 Other Biological Sciences > 069999 Biological Sciences not elsewhere classified @ 100%|
|SEO Codes:||97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 100%|
|Deposited On:||13 Dec 2010 10:08|
|Last Modified:||12 Feb 2011 20:38|
Last 12 Months: 0
Repository Staff Only: item control page