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Lecture 11 mating
problems of mating
Term | Definition |
---|---|
significant costs of sex | courting, energy, sacrifice 1/2 genes, deseases |
sex benefits | adds variability to alleles |
female parental investment: mammals | gestation, lactation, most of rearing |
differential sex investment | females choosier about mates (require greater benefits to mate) |
females more productive resourse | males more competitive (costs of competition are compensated by greater benefits) |
female more productive exceptions | morman crickets: male provides spermatiform->females more competitive; sea horses gestate in male pouch: females more colorful |
necrophilia | mating disorder |
Mate preference dimensions | physical, psychological, social (riches, status) |
Mate preferences as EPMs | perceiving fertility, resource potential |
mate opportunies don't always fit | preferences |
pickiness | selected against |
mating EPMs | interactive and sensitive to context |
reproduction | central driver of evolutions |