Susceptibility of brook charr, Salvelinus fontinalis to the pathogenic haemoflagellate, Cryptobia salmositica, and the inheritance of innate resistance by progenies of resistant fish.

Abstract excerpt

Eighty-seven of 175 laboratory raised F1 generation brook charr (Salvelinus fontinalis) were resistant to experimental Cryptobia salmositica infection. Susceptibility to the pathogen was not related to age nor to route of infection. Plasma of resistant charr lysed the parasite under in vitro conditions while those of susceptible fish did not. Sperm from 4 susceptible and 4 resistant male charr, from 8 F1...

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