Article
Density-dependent selection on horn phenotype in Soay sheep.
Philosophical transactions of the Royal Society of London. Series B, Biological sciences - 29 Jul 1997
Clutton-Brock T H, Wilson K, Stevenson I R
Abstract excerpt
In the naturally regulated population of Soay sheep (Ovis aries L.) on Hirta (St Kilda), 12% of males and 24% of females have scurred horns. This trait reduces the competitive ability of males in the mating season but is associated with higher overwinter survival rates in both sexes (Moorcroft et al. 1996). In this paper, we show that scurred females also show higher conception rates and weaning rates than...
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