An escape theory model for directionally moving prey and an experimental test in juvenile Chinook salmon.

ABSTRACT: Prey evaluate risk and make decisions based on the balance between the costs of predation and those of engaging in antipredator behaviour. Economic escape theory has been valuable in understanding the responses of stationary prey under predation risk; however, current models are not applicable for directionally moving prey. Here we present an extension of existing escape theory that predicts how much predation risk is perceived by directionally moving prey. Perceived risk is measured by the extent antipredator behaviour causes a change in travel speed (the distance to a destination divided by the total time to reach that destination). Cryptic or cautious antipredator behaviour slows travel speed, while prey may also speed up to reduce predator-prey overlap. Next, we applied the sensitizati

SUBMITTER: Sabal MC 

PROVIDER: S-EPMC7497163 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature