BIO152H5 Lecture Notes - Lecture 19: Mate Choice
Document Summary
Mating behavior and mate choice play a key role in determining reproductive success: attracting mates, choosing among potential mates, competition for mates, care of offspring. Conspicuous ornaments: females look physically different than males. Conflict between natural selection and sexual selection. Darwin was the first to explore the implications of sexual selection: depends on the advantage which certain individuals have over other individuals of the same sex and species, in exclusive relation to reproduction. Charles darwin a form of selection where individuals with certain inherited traits are more successful at attracting mates and breeding than other individuals in a population. Sexual selection can result in sexual dimorphism. Monogamous: one male mates with one female (males and females look alike) Polygamous: one individual of one sex mates with several of the other. Polygyny: single male, many females (males larger and showier than females) Polyandry: single female, many males (females larger and more ornamented than males)
