Biology 1001A Lecture Notes - Lecture 16: Hominidae, Inclusive Fitness, Game Theory
6 Dec 2016
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Document Summary
Social behaviour interactions animals have with other members of their species. Level of social interactions varies seasonally (timing of reproduction) Pride one adult male + multiple related females + offspring: cool: females are genetically related with synchronized estrus cycles, benefit for females: Support of others in pride (caring for young, cooperating in foraging) Infanticide: occurs when a new male takes over a pride, reasons: Raising existing cubs takes time (which male doesn"t have) Females cannot protect their young from male. Leaving pride would drastically decrease reproductive success. Advantages and disadvantages of living in a group. E. g. muskoxen form circle around young when attacked by wolves. Australian sawfly caterpillars regurgitate sticky pungent oils to defend against predators. Lion"s prey in groups increases group defences to affect lion hunting success. E. g. white pelicans encircle school of fish. Hyenas can outnumber lions to steal their kills. E. g. royal penguins large colonies: spread of contagious diseases and parasites.
