01:119:101 Lecture Notes - Lecture 24: Greylag Goose, Fixed Action Pattern, Proximate And Ultimate Causation
12 Jul 2015
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Document Summary
Why does the behavior have a higher relative fitness than some other behavior: evolutionary i. Addressing ultimate causation: example - bluegill sunfish breeds in spring, proximate cause i. ii. Water is getting warm and food is abundant. Cost ex: leave offspring vulnerable to predators: nature vs. nurture, all behavior has genetic basis. Innate(instinct) generally programmed: behavior modified by environment. Learned behavior is behavior that has been modified in response to environment experience: behavior is a product of interaction between genetic capacity and environment influences, motor program behavior. Is a behavior that depends on coordinated sequences of muscle actions. This sequence is triggered by a sign stimulus also known as releaser. Once this motor program starts it is carried through to completion even if circumstances change and make the behavior inappropriate. Very little flexibility and very little learning: ex: european graylag goose. Figure 52-2 egg-rolling behavior, egg removed from nest and goose reaches out with neck and pulls egg back.
