The effect of sea lice Lepeophtheirus salmonis on juvenile pink salmon Oncorhynchus gorbuscha swimming endurance
Mages, P.A.; Dill, L.M.
Canadian Journal of Fisheries and Aquatic Sciences 67(12): 2045-2051
ISSN/ISBN: 0706-652X DOI: 10.1139/f10-121
The swimming endurance of naturally and experimentally infected juvenile pink salmon ( Oncorhynchus gorbuscha) was measured to determine the effects of sea lice (Lepeophtheirus salmonis). Salmon naturally infected with adult male and preadult stage lice did not appear to have a reduced swim performance, but when experimentally infected with adult female lice, juvenile salmon showed a reduced ability to swim compared with uninfected control fish, and this effect increased with lice load. A reduced swimming endurance is not only likely to influence predation risk for salmon, but may have other ecological implications, such as slower seaward migration.