The willing cuckold: optimal paternity allocation, infanticide and male reproductive strategies in mammals
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منابع مشابه
Sexual conflict. The evolution of infanticide by males in mammalian societies.
Male mammals often kill conspecific offspring. The benefits of such infanticide to males, and its costs to females, probably vary across mammalian social and mating systems. We used comparative analyses to show that infanticide primarily evolves in social mammals in which reproduction is monopolized by a minority of males. It has not promoted social counterstrategies such as female gregariousne...
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During mating events, numerous mammals and birds produce loud and acoustically distinct vocalisations, usually referred to as ‘copulation calls’. In some species, males are the main producers (e.g. little brown bats, Myotis lucifugus, Barclay & Thomas 1979), but generally they are given by females, sometimes accompanied by their male partner (e.g. elephant seals, Mirounga angustirostris, Cox & ...
متن کاملInfanticide and reproductive restraint in a polygynous social mammal.
Alpha male chacma baboons experience uncontested access to individual estrus females. Consequently, alpha male paternity certainty is high and underpins significant levels of infanticide by immigrant males that, in turn, has selected for male defense of infants. There is also, however, a high probability that alpha males will be absent during the period when their own offspring are vulnerable, ...
متن کاملInfant mortality following male takeovers in wild geladas.
Since Sugiyama's [1965] first observations of infanticide, empirical evidence from a multitude of primate species has supported the sexual selection hypothesis-the idea that males enhance their reproductive success by killing nonrelated, unweaned infants to hasten the mothers' return to fertility. Like other primates that live in social groups where paternity certainty is high, the social struc...
متن کاملInfant Mortality Risk and Paternity Certainty Are Associated with Postnatal Maternal Behavior toward Adult Male Mountain Gorillas (Gorilla beringei beringei)
Sexually selected infanticide is an important source of infant mortality in many mammalian species. In species with long-term male-female associations, females may benefit from male protection against infanticidal outsiders. We tested whether mountain gorilla (Gorilla beringei beringei) mothers in single and multi-male groups monitored by the Dian Fossey Gorilla Fund's Karisoke Research Center ...
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تاریخ انتشار 2009