Generality of the Size-Distance Relation in Models of Optimal Feeding

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Abstract
The size-distance properties expected for a variety of prey-handling functions if pursuit or provisioning time is unrelated to prey size were worked out. The best prey size increases with distance. For given values of profit (measured as energy per unit time), profit changes less with distance, the larger the prey. The range of sizes taken shifts toward larger sizes, as distance increases. If pursuit or provisioning time increases with prey size, the effects can be reversed.