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The Succession of Generations and Growth of the Caligid Copepods Caligus Elongatus and Lepeophtheirus Salmonis Parasitising Farmed Atlantic Salmon Smolts (Salmo Salar L.)

Published online by Cambridge University Press:  11 May 2009

Oliver Tully
Affiliation:
Shellfish Research Laboratory, Carna, Connemara, Co. Galway, Ireland

Extract

Infestation of cage cultured Atlantic salmon by the external parasitic copepods Caligus elongatus (Nordmann) and Lepeophtheirus salmonis (Kröyer) is a serious cause of loss of production in the commercial sea water culture of this species. The copepods feed on the mucus, skin and blood of their hosts (Kabata, 1974; Brandal et al., 1976) causing irritation and lesions. Loss in production due to infestation by lice occurs directly by the mortality of fish from osmotic shock and indirectly from a probable reduction in growth, from secondary infections such as vibriosis (Wootten et al., 1982) or by increasing vulnerability to ultraviolet radiation damage (McArdle & Bullock, 1987).

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1989

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