Prey types - PowerPoint PPT Presentation

FORAGING

FORAGING. Diet Selection Models. ASK THE FOLLOWING QUESTION:. 1. WHAT FOOD ITEMS SHOULD A FORAGER EAT?. Imagine a predator seeking prey:. Finds either prey type. Eat?? Move on??. Currency: Maximize rate of energy intake. The RULES!!!. 1. We can measure some standard currency.

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10~Chapter 10

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Optimal Diet Choice

Optimal Diet Choice. Contingency Model Hypothesis: Fitness Increases with Increase Individual’s Long-Term Average Rate of Energy Gain Two Prey Types: Specialize or Generalize? Extend to &gt; 2 Prey Types. Contingency Model. Parameters: Encounter Rates  I ; I = 1, 2

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172 views • 10 slides

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