Lecture 24 Behavior KRG final [Read-Only]

Lecture 24 Behavior KRG final [Read-Only] - Our Schedule...

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Our Schedule Dr. Kevin Gurney Office: LSA, rm 364 Phone: 965-4556 Email: kevin.gurney@asu.edu Office Hrs: MW: 3-4 pm Evolution: http://www.colbertnation.com/the-colbert-report- videos/250617/september-30-2009/richard-dawkins Carniverous plants: http://www.youtube.com/watch?v=KYGwgzehf6c Seville Orange
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Is Behavior Adaptive? Wildebeest - Serengeti Some Animal Behaviors* h Territoriality (increase food supply, optimize mating) h Hiding/Running/Concealment (reduce predation & competition) h Selecting Habitats (optimize food, reduce predation) h Selecting Mates (increase offspring survival) h Parenting (increase offspring survival) h Defending Territories (reduce predation, optimize mating)
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Behavioral Biology Behaviorists focused on conditioning. Pavlov described a conditioned reflex —food, an unconditioned stimulus (US) was paired with a sound, a conditioned stimulus (CS). The Conditioned Reflex continued
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Behaviorism The experimental approach to behavior greatly influenced animal behavior research, or behaviorism : s Focused on laboratory environments s Used only a few species s Focused on questions of learning and memory Ethology Ethology —study of animal behavior from an evolutionary perspective. Ethologists were interested in instinctive behaviors —genetically determined “ fixed action patterns”* : s Performed without learning s Stereotypic (same way each time) s Cannot be modified by learning (or “overridden”)
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Ethology experimental approaches: 1. Deprivation experiments 2. Genetic experiments: s Alter genome by interbreeding s Compare individuals that differ by only one gene s Knock out or insert specific genes reared with no experiences related to the species-specific behavior – test for releasers ( fixed action patterns that are response to specific stimuli). The “Releaser” in Gull chicks Tinburgen’ s experiment
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A red dot is more important than realistic head shape A red dot is more important than realistic head shape Head color & shape have little impact on the red dot’s stimulation Head color & shape have little impact on the red dot’s stimulation The “Releaser” in Gull chicks: experimental results Use of inbreeding to alter genome Interbreeding was used by Konrad Lorenz to study courtship behavior in ducks. Some species are closely related and
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This note was uploaded on 04/18/2011 for the course BIO 182 taught by Professor Jacobson during the Fall '11 term at ASU.

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Lecture 24 Behavior KRG final [Read-Only] - Our Schedule...

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