11:216:115 Lecture Notes - Burying Beetle, California Mouse, Mate Choice

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Female: a female"s success is limited by access to resources, the female boosts reproductive success by getting male parental. In birds: females invest more than 50% of body weight for a clutch of eggs. A female can get all sperm she needs to fertilize all her eggs from one male. Male has sole access to 2 female in a breeding season. Serial monogamy: 1 male and 1 female in a breeding season, but they choose different mates after that. Pair bond: 2 individuals living in close association with each other in a breeding season: long term relationship. Biparental care: monogamy is extremely rare in mammals (including primates, lifetime monogamy: rare. Across animal kingdom: less than 3% of all mammal species are monogamous. Non-existent in large conspicuous diurnal species e. g. humans, gorillas, elephants. Monogamy is much more common in small diurnal speces: easy to cheat : extra pair copulation e. g. old field mouse (permyseus polionotus, live in underground burrows.

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