SEXUAL SELECTION BY CRYPTIC FEMALE CHOICE ON MALE SEMINAL PRODUCTS - A NEW BRIDGE BETWEEN SEXUAL SELECTION AND REPRODUCTIVE PHYSIOLOGY

Selection clearly focuses on differences in reproduction, but studies of reproductive physiology generally have been carried out in a near v acuum of modern evolutionary theory. This lack of contact between the two fields may be about to change. New ideas indicate that sexual sele ction by cryptic female choice has affected the evolution of products in male semen that influence female reproductive behavior and physiolo gy.