Natural history of the American lobster...

Abstract

Svr,vEsrrn, J. R. 1972. Effect of thermal stress on predator avoidance in sockeye salmon. J. Fish. Res. Bd. Canada 29: 601-603. Under laboratory conditions, predation rates of yearling coho salmon (Oncorhynchus kisutch) on sockeye salmon fry (Oncorhynchus nerka) increased with increasing acclimation temperature. Elevated temperature doses significantly decreased survival of sockeye salmon fry. The results suggest that under natural conditions, sudden increases in water temperature could alter predator-prey interactions of some fish by increasing predation mortalities. Svr,vnsrrn, J. R. 1972. Effect of thermal stress on predator avoidance in sockeye salmon. J. Fish. Res. Bd. Canada 29: 601-603. Au laboratoire, le taux de pr6dation des saumons coho (Oncorhynchus kisutch) d'un an sur des alevins de saumons sockeye (Oncorhynchus nerka) atgmenle avec la temp6rature d'acclimatation. L'exposition d des temp6ratures 61ev6es diminue sensiblement le taux de survie des alevins de saumons sockeye. Ces rdsultats donnent d entendre que dans la nature, des 6l6vations subites de temp6rature peuvent affecter la relation prddateur-proie de certains poissons par un accroissement de la mortalit6 due d Ia pr6dation.