ABSTRACT

The name of the disease 'furunculosis' refers to lesions in the dermis seen as characteristic umbonate ulcers. The organism penetrates into the

accumulation and high concentrations in the sediments (Jacobsen and Berglind, 1988; Samuelsen et al, 1992). As explained elsewhere in this article, residues of the antibacterial agents were also found in the wild fauna in the vicinity of the medicated fish farms, the bacteria in the sediments developed high frequencies of resistance against the drugs (Lunestad, 1992). Additional environmental problems emerged when organic enriched sediments proved to be a refuge in which bacteria pathogenic to fish could survive for at least 18 months (Husevâg, 1994).

Diagnostics