Acid water and aluminium exposure: gill lesions and aluminium accumulation in farmed brown trout, Salmo trutta L.

摘要: . Brown trout, Salmo trittta L., from two fish farms, situated within acid-susceptible areas in Sweden, were studied with respect to aluminium accumulation and gill pathology. The total concentrations, after liming of the water both between 200 300μg/1 at sampling. trout a third farm non-acidified area (total concentration 35μg/1 included as control. concentrations gills farmed brown acidified approximately 20μg/g 90μg/g wet weight respectively compared 2μg/g control gills. Light- electron microscopic examination disclosed major types lesions characterized by chloride cell hyperplasia secondary lamellar epithelium enlargement intercellular spaces epithelium. difference speciation may explain pathology areas. together relatively low is considered reflect long-term exposure effect.