Lecture Sept 25 - Reproductive Fitness Survival and...

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Reproductive Fitness Survival and Reproduction Locomotion, Feeding, Mating, Communication Flight, Walking Movement, Copulation, Defecation
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Behaviors often involve tradeoffs When should I eat? When should I mate? How much time should I spend finding a mate? Did I leave the oven on? How much time should I spend eating? When is Manny coming back? How can anyone like A- rod? Does Petraeus think we’re dumb?
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Comparative Method Common in sociology, politics, anthropology, ecology and other sciences Alternative scientific method to experimental or statistical approaches
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Comparative Method in Biological Sciences Comparisons across taxa Powerful tools to apply where experiments are not feasible (eg. Evolution or ecology questions) Usually require theoretical framework to test hypothesis – fit of expectation to observation (or vice versa?) eg. Behavioral Optimization
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Energy Gain Time spent feeding at patch Time spent searching for patch 100 Optimization models (strategy stability) 25 g (T)
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Reproductive Fitness Survival and Reproduction Locomotion, Feeding, Mating, Communication Flight, Walking Movement, Copulation, Defecation
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Ecological and Evolutionary Theory Explains behavior in the context of an organisms reproductive effort (i.e. fitness) Allows us to identify optimization strategies for how animals maximize fitness
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Action Specific Energy (ASE)
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ASE Sign Stimulus (SS)
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SS ASE Innate Release Mechanisms (IRM)
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A Fixed Action Pattern
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Action specific energy: energy buildups and drives behavior Sign stimulus: pre- programmed environmental event will trigger specific response Innate releasing mechanism :
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This note was uploaded on 05/19/2008 for the course PLSOILIN 126 taught by Professor Cooley during the Fall '07 term at UMass (Amherst).

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Lecture Sept 25 - Reproductive Fitness Survival and...

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