BIOL 1412 Lecture Notes - Lecture 36: Eusociality, Operant Conditioning, Fixed Action Pattern
18 Apr 2016
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Document Summary
Ethologist school: bounded in concept of evolution, experimentation in natural settings, consisted of frisch, tinbergen , and lorenz, they tend to focus on innate and imprinted behaviors. Innate behaviors: behaviors that are inborn, stereotypic, each organism in population has that behavior, associated with fixed action patterns (fap) of retrieval. Egg retrieval in geese (rolling back to nest, happens naturally), dance of male bees. 3 steps of : move toward egg, hook egg with beak, roll egg back to nest invariant in its fixed action pattern within a species. Ballistic (key element for a fixed action pattern); behavior they cannot stop; if you steal an egg, they will still push an imaginary egg back to the nest. Stimulus is the egg noticed by goose outside of the nest. The shape of the egg (arch, oval) is the releaser; only the shape will make them retrieve; prefer bigger eggs. Specific sensitive period during development when it occurs.
