Sexual Selection: Male-Male Competition
نویسنده
چکیده
Aggression. Offensive action, particularly in regard to defending resources. Aggression in defending females and other resources should be favored by selection when there are fewer resources than competitors and when an individual can boost fitness by forcibly removing another individual. Intersexual Selection. Sexual selection due to interactions between the sexes. Mate choice by males or females is intersexual selection. Intrasexual Selection. Sexual selection due to interactions within one sex. Male-male competition for access to mates is the major form of intrasexual selection. In some cases females may also compete for mates, especially in sex-role reversed species. Polygyny. Mating systems characterized by high variance in male reproductive success; a few males mate with many females, and many males mate with few or no females. SpermCompetition. Competition between the ejaculates of different males to fertilize the ova of a particular female.
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