BIO318Y5 Lecture Notes - Lecture 7: Hypothesis, Nuptial Gift, Mozzarella
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Also behaviour and other life history traits: mate choice is typically by females, sexual competitiveness is typically males, risky mating behaviour and mating mistakes is usually by males. Picture of moose trying to mount a statue bison: female biased longevity (independent of risks) Last lecture: strength of selection is really high because we get rapid evolutionary change in species lineages, 2 potential mechanisms of sexual selection. Sexual selection in context of sexual competition: examining adaptation. Taking apart a heart and then observing it to understand its functions. Finding alternatives in getting mates; last time was horn size which was determined by genetic; now we are looking at getting mates through variation in sex differences that is. Sexual selection histogram: higher number of males means less off springs produced per. Theories: darwin: sexual selection is greater on males than females, parental investment theory. What are males competing for: access to females/gametes, inseminating females, operational sex ratio, time-out from mating.