The physiological effects of salmon lice infection on post-smolt of Atlantic salmon

摘要: The physiological effects of salmon lice infections on post-smolt Atlantic were examined by experimentally infecting hatchery reared post-smolts with infective copepodids. Even at high infection intensities, ranging from 30–250 per fish, early chalimus stages did not have severe, the fish. There was a sudden increase in fish mortality after appearance preadult I stages. Infected then suffering due to lesions and osmoregulatory failure. Plasma chloride level increased significantly total protein, albumin haematocrit decreased infected compared uninfected All became moribund before adult appeared. Infection intensities above 30 larvae thus appear cause death soon reach their pre-adult stage.