Predating on

Having found prey, a predator must decide whether to pursue it or keep searching.

Where food is found in patches, such as rare shoals of fish in a nearly empty ocean, the search stage requires the predator to travel for a substantial time, and to expend a significant amount of energy, to locate each food patch.When prey is detected, the predator assesses whether to attack it.This may involve ambush or pursuit predation, sometimes after stalking the prey.However, the concept of predation is broad, defined differently in different contexts, and includes a wide variety of feeding methods; and some relationships that result in the prey's death are not generally called predation.A parasitoid, such as an ichneumon wasp, lays its eggs in or on its host; the eggs hatch into larvae, which eat the host, and it inevitably dies.

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