ANT 1 Lecture Notes - Lecture 12: Ejaculation, Competitive Advantage, Mate Choice
Document Summary
Lecture 12: life history and sexual selection. Mating, gestation, lactation, rearing offspring a) parenting effort: mating effort. Timing of these allocations across the life cycle. Primates have long juvenile period large brains. Adolescent (puberty) transition from somatic to reproductive effort. Parenting effort offspring quality protection provisioning learning social networks etc. Mating effort mate competition mate attraction: copulations etc. Current vs. future offspring e. g. , weaning conflict. May depend on stage of reproductive career. Early have lots of future reproductive potential, move on to next offspring. Late less reproductive potential, make sure this offspring is high-quality. Mother is related to child by 50% Mother is related to other offspring by the same amount. Child is related to itself by 100% Child is only 50% related to full siblings, 25% to half siblings. Both mother and child want to maximize own inclusive fitness. Mother has limited resources resources invested in one child cannot be invested in another: from mother"s point of view:
