ANTH 140 Lecture Notes - Lecture 2: Scramble Competition, Orangutan, Sperm Competition
11 Dec 2017
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Document Summary
Ecological pressures: female distribution and sociality , male mating strategies, female counter strategies , social system. Mating systems are products of male and female strategies to maximize inclusive. Male response: join f, share and defend exclusive territory > monogamy one male one female. Males invest , mate guard, paternity certainly, defend food, cuckhold other males. Female defend food, convince male that offspring are his. Infant care and carrying by male is common: defend core areas used by several females> dispersed polygyny one male multiple females. Male constant vigilance, long calls, intimidation when dominant. Transient male mate sometimes coercively when possible. Female high quality core area, protect by dominant male, rest transient males. Orangutan two male morphs: join other males to raise one females offspring> polyandry one female multiple males. Male generally not acceptable be high ranking within group reproductive skew, invest in offspring, share female with kin.
