Predator diet and prey behaviour: freshwater snails discriminate among closely related prey in a predator’s diet

Chemical cues are commonly used by prey to assess predation risk. Prey typically respond to predator cues by altering behaviour, but their response may depend on predator diet. There are few data on how predators feeding on prey types spanning a continuous gradient of relatedness affect prey behaviour. Here I present the results of a […]

Responses of cambarid crayfish to predator odor

The responses of individuals of four sympatric species of cambarid crayfish to the introduction of the odor of a common predator, the snapping turtle Chelydra serpentina, were recorded in the laboratory. Adult Orconectes virilis spent significantly more time in a lowered posture and reduced the frequency of nonlocomotory movements following introduction of snapping turtle odor […]