Forced honest signals_Discussion 5

Forced honest signals_Discussion 5 - Nestling hunger level...

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Direct material link between signal and some underlying aspect of the signaller’s state or condition Tungara Frog Calls (Ryan, Wilczynski, and colleagues) Small Tungara frogs are incapable of making low frequency calls due to the physics of sound production and sound propagation
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Nestlings begging for food Costs Benefits Energy for call Predation risk Food from parent Nestling hunger level affects….?
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Nestlings begging for food Costs Benefits Energy for call Predation risk Food from parent
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Unformatted text preview: Nestling hunger level affects? Studies show: relatively low cost Fitness value of Cost or Benefit Benefit 1 Benefit 2 2 1 Satiated Hungry, close to starvation e.g., B2* B1* Time spent begging Cricket: how long to sing? Costs Benefits Energy for singing Time for singing Predation risk Attracting female Male condition affects? Fitness value of Cost or Benefit Benefit Cost 1 2 Cost 1 2 1 Good condition Poor condition, 2 e.g., S* S* Time spent singing...
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Forced honest signals_Discussion 5 - Nestling hunger level...

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