© 2006 The Authors.
© 2006 British
Blackwell Publishing Ltd
Female modulation of reproductive rate and its role
in postmating prezygotic isolation in Callosobruchus
C. FRICKE, G. ARNQVIST and N. AMARO
Evolutionary Biology Centre, Department of Ecology and Evolution, Animal Ecology, Uppsala University,
Norbyvägen 18D, SE-752 36 Uppsala, Sweden
1. Mechanisms that come into play after mating but prior to fertilization can prevent
hybrid formation and thus promote reproductive isolation. Recent research indicates
that the evolution of such barriers to gene exchange between incipient forms appears
to be common and is essential for speciation.