Effects of salmon lice on sea trout. A litterature review

Abstract

Thorstad, E.B., Todd, C.D., Bjørn, P.A., Gargan, P.G., Vollset, K.W., Halttunen, E., Kålås, S., Uglem, I., Berg, M. & Finstad, B. 2014. Effects of salmon lice on sea trout. A litterature review. NINA Rapport 1044. 162 s. Salmon lice are external parasites on salmonids in the marine environment. Farmed salmonids also act as hosts for salmon lice; therefore open net cage farms can increase the production of infective larvae in coastal areas. The aim of this report is to review the existing knowledge on the effects of salmon lice on wild sea trout and focuses on reports in the peer-reviewed primary scientific literature. Fro this reason, references to so-called "grey literature" reports has been minimized. The studies reviewed here range from laboratory and field investigations of the effects of salmon lice on individual fish, to analyses of impacts on wild populations.