11:216:269 Lecture Notes - Lecture 4: Mate Choice, Bluegill, Necrophilia
27 Sep 2017
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Sexual selection - process that depends on the advantage which certain individuals have over other individuals of the same sex and species in exclusive relation to reproduction (competition between the same sex) Within one sex members of one sex compete with each other for access to the other sex: male-male competition. Human egg: 0. 004 in (20x larger than sperm) Bateman principle - proposed by aj bateman (1948: studied fruit flies. In the intensity of sexual selection, males have a higher variation in reproductive success than females. In a population of 1 species, most males have 0 rs. Intrasexual selection: male-male competition (ex: bighorn sheep, stickleback fish, lions: winner of the fight gets . 2 to mate with male 1: male 1 and female mate and male 1 guards the female, male 2 shows up, and male 1 assumes posture of female allows male. 3: both male and female can measure length different foraging strategy nuptial gift.
