3.11- animal behavior

3.11- animal behavior - Economics of Behavior Behavior is a...

Info iconThis preview shows pages 1–12. Sign up to view the full content.

View Full Document Right Arrow Icon
Economics of Behavior Behavior is a trade off between costs and benefits Costs Feeding – foraging/hunting Attracting mates- visual-plumage acoustic- song olfactory- pheremonomnes Danger – predation/injury Defense- displays- pushups growing- horns fighting-energy/injury Raising young- egg/embryo feeding young
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Economics of Behavior Benefits Behavior is a trade off between costs and benefits Survival Health- strength no injury Nurtients/energy in reproductive success Raising healthy young
Background image of page 2
Economics of Behavior Behavior is a trade off between costs and benefits Are behaviors optimal in the economic sense? Working hypothesis: Behavior is adaptive = Reproductive Success Cost Benefit Optimal behavior: - benefits most outweigh the costs 1 1 0 .5 .5 Each point on the line rep. a behavior
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Economics of Behavior Cost Benefit 1 1 0 .5 .5 What is the optimal behavior? Subtract costs from benefits a b c A benefits 0.7- costs 0.3 = 0.4
Background image of page 4
Cost Benefit Analysis The example of mobbing in Gulls Benefit minimizes the loss of young Cost risk of injury, energy output, risk of leaving young There are cautious and there are daring mobbers risky = starting and leading the mob Cautious = small disruption What is the optimal way to be?
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Cost Benefit Analysis The example of mobbing in Gulls Units of Fitness 10 10 0 5 5 Is it better to be cautious or risky? Distance btw mobber and predator risky cautious
Background image of page 6
Cost Benefit Analysis The example of mobbing in Gulls Units of Fitness 10 10 0 5 5 Is it better to be cautious or risky? Distance btw mobber and predator risky cautious (Put in a U shape for cost) benefit Difference between benefit and cost line is B- Cmax Optimal mobbing distance = 4m
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Economics of Behavior Behavior is a trade off between costs and benefits Some complications: The trait level that maximizes net fitness can vary -cost and benefits are not the same for all individuals -??
Background image of page 8
Short-term optimality Long-term optimality Economics of Behavior Behavior is a trade off between costs and benefits Some complications: Focus on immediate solution to problem in absense of other considerations Solutions that maximize LRS, combining all relevant decisions and strenths -interactive effect of numerous short term decicions across overall lifetime, lifetime
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Cost Benefit Analysis The example of mobbing in Gulls How does the optimal mobbing distance vary with behavior of group members? 1. Suppose an ancestral trait to be daring 2.We have a mutation, a cautious phenotype 3.Benefits of cautious will outweigh costs bc everyone else is doing the mobbing, cautious genes will be selected for
Background image of page 10
Cost Benefit Analysis The example of mobbing in Gulls How does the optimal mobbing distance vary with behavior of group members? 4. Cautious gulls
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 12
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 40

3.11- animal behavior - Economics of Behavior Behavior is a...

This preview shows document pages 1 - 12. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online