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Observations of pathological changes on the skin (furunculosis) of salmon and sea trout spawners caught in Polish rivers and cultivated In ponds were continued in 2009. In comparison to the prevalence of this disease in 2007-2008, pathological changes were noted among fish from fewer rivers, while the percentage of fish infected with disease was significantly lower. Ichthyopathological tests were...
Furunculosis appears from time to time in salmonids in different rivers. It was noted in sea tout from the Dunajec River in 1923 and 1924. In 2007 and 2008, it was noted in sea trout and salmon from Pomeranian rivers, where from 80 to 2,400 sea trout spawners were caught. The degree of infection ranged widely from 0.00% in the Łeba to 74.7% in the Słupia and Rega rivers. In 2007, of the 1,381 sea...
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