Studies on vertical transmission of Aeromonas salmonicida

In four attempts to effect vertical transmission of Aeromonas salmonicida, the cause of furunculosis, transmission did not occur. Progeny of both naturally infected and artificially infected brood stock of rainbow trout (Salmo gairdneri) and brook trout (Salvelinus fontinalis) did not develop furunculosis during a 10‐12‐month posthatching observation period.