lect3_10R - Reproduction 23:47 Socialorganization...

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Reproduction 23:47 Reproductive Strategies Social organization: Exclusion, emigration Dominance, inhibition Mate selection: Sexual dimorphism Female choice-if female chooses to mate with a larger male, this preference drives  evolution Sexual behavior Mating Seasonality Puberty Endocrinology (hormone) Seasonal Breeding Annual Reproductive Cycle Births oriented to wet season when there is plentiful food and water. Mate in dry season and peak of births is in the rainy season, 6 months later mate again,  repeat, etc. With long stretches of no sexual activity Seasonally polyestrous: once a year for a few times they have their menstrual cycle… either pregnant or nursing most of their lives Lactational Amenrorrhea: when a female monkey is nursing she won’t cycle…as she  begins to wean her infant, then she begins to cycle and coincides with the start of next  mating season Ecological Zeitgebers (time-keepers) Rainfall and food availability drive mating season…no attention to light Equitorial part of the world where light doesn’t change much because there are no 
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lect3_10R - Reproduction 23:47 Socialorganization...

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