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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

2010


ISSN/ISBN: 0706-652X
DOI: 10.1139/f10-121
Accession: 037477225

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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.

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