BLG 144 Chapter Notes - Chapter 51: Kin Selection, Mate Choice, Inclusive Fitness
27 Dec 2017
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Beha(cid:448)ioural e(cid:272)olog(cid:455) ai(cid:373)s to u(cid:374)dersta(cid:374)d ho(cid:449) a(cid:374)d (cid:449)h(cid:455) a(cid:374)d a(cid:374)i(cid:373)al"s (cid:271)eha(cid:448)iour is adapted to the e(cid:374)(cid:448)iro(cid:374)(cid:373)e(cid:374)t i(cid:374) (cid:449)hi(cid:272)h it lives. Who you mate with, what you eat are all behaviour and all have direct fitness consequences. Heritable variation with competition for survival and reproduction. Natural selection can only work on genetic differences, so for behaviour to evolve. There must be, or must have been, behavioural alternatives in the population. Difference must be, or must have been, heritable. Some behavioural alternatives must confer greater reproductive success than others. Proximate causation casual and developmental answers are proximate because they explain how a given individual comes to behave in a particular way during its lifetime. It takes a pro to really know how something works (way to remember) Ultimate causation answers that related to an adaptive advantage or evolution are called ultimate because they explain why the individual evolved the behaviour. The proximate and ultimate levels of causation are complementary and overlapping.
