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Constraints on Sexual Selection
- Wade, Michael J.
- Science 2012 v.338 no.6108 pp. 749-750
- Antilocapra americana, females, males, mortality, progeny, reproductive fitness, sexual selection, viability
- Ever since Darwin (1) identified female choice of mates as a mechanism of sexual selection, it has been a challenge for evolutionary biologists to quantitatively integrate sexual selection, acting on reproductive fitness at the time of mating, with natural selection, acting on viability at other times in the life cycle. On page 802 of this issue, Byers and Dunn (2) report an important step toward this goal. They show how female choice of mates and offspring mortality together affect the strength of selection acting on male pronghorns, Antilocapra americana .