Jun 26, 2009

How does breeding system variation modulate sexual antagonism?

Biology Letters
Stéphanie BedhommeNils Anthes

Abstract

The study of sexually antagonistic (SA) traits remains largely limited to dioecious (separate sex), mobile animals. However, the occurrence of sexual conflict is restricted neither by breeding system (the mode of sexual reproduction, e.g. dioecy or hermaphroditism) nor by sessility. Here, we synthesize how variation in breeding system can affect the evolution and expression of intra- and inter-locus sexual conflicts in plants and animals. We predict that, in hermaphrodites, SA traits will (i) display lower levels of polymorphism; (ii) respond more quickly to selection; and (iii) involve unique forms of interlocus conflict over sex allocation, mating roles and selfing rates. Explicit modelling and empirical tests in a broader range of breeding systems are necessary to obtain a general understanding of the evolution of SA traits.

Mentioned in this Paper

Reproduction
Sex Chromosomes
Sexual Reproduction
Disorders of Sex Development
Gene Expression
Hermaphroditism
Breeding
Intersexuality
Locus
Genetic Polymorphism

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