Sexual Selection: Placentation, Superfetation, and Coercive Copulation
نویسندگان
چکیده
منابع مشابه
Sexual Selection: Placentation, Superfetation, and Coercive Copulation
The evolution of placentas in poeciliid fishes is associated with conception of overlapping litters and male mating strategies becoming more coercive. Sperm competition in ovaries of multiply-inseminated females may favor fertilization of immature eggs during ongoing pregnancies.
متن کاملCoercive sexual strategies.
This study examines the use of coercive sexual strategies by men and the outcomes of these behaviour for women. Using a sample of 541 college undergraduates, data were gathered from men on their use of three types of coercive sexual strategies and from women on their experiences with these same forms of behaviors. For women, there is a positive association between being sexually active, having ...
متن کاملA model of sexual selection and female use of refuge in a coercive mating system.
In many non-monogamous systems, males invest less in progeny than do females. This leaves males with higher potential rates of reproduction, and a likelihood of sexual conflict, including, in some systems, coercive matings. If coercive matings are costly, the best female strategy may be to avoid male interaction. We present a model that demonstrates female movement in response to male harassmen...
متن کاملSexual selection and speciation.
The power of sexual selection to drive changes in mate recognition traits gives it the potential to be a potent force in speciation. Much of the evidence to support this possibility comes from comparative studies that examine differences in the number of species between clades that apparently differ in the intensity of sexual selection. We argue that more detailed studies are needed, examining ...
متن کاملSexual selection
Sexual selection is a concept that has probably been misunderstood and misrepresented more than any other idea in evolutionary biology, confusion that continues to the present day. We are not entirely sure why this is, but sexual politics seems to have played its role, as does a failure to understand what sexual selection is and why it was initially invoked. While in some ways less intuitive th...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Current Biology
سال: 2014
ISSN: 0960-9822
DOI: 10.1016/j.cub.2014.07.039