The use of chemosterilants to lower the frequency of skin fungal infection amongst precocious male 1+ Atlantic salmon parr, Salmo salar L.

Precocious male 1+ Atlantic salmon parr were treated with methallibure and cyproterone acetate during the later stages of spermatogenesis. These drugs prevented hyperplastic changes in the epidermis and lowered the prevalence of fungal infection. They did not alter the mucohistochemical staining pattern or the superficial mucous cell concentration of the skin.