title: HEMATOLOGICAL PARAMETERS OF EUROPEAN PERCH (Perca fluviatilis Linnaeus, 1758) ASSOCIATED WITH PARASITIC INVASIONS
abstract: European perch (Perca fluviatilis Linnaeus, 1758) is widespread in water basins and has a commercial value. However, in the natural environment, fish are often infected with invasive diseases, which exclude its processing for food purposes. Being in the body of fish, parasites produce toxic substances that affect various organs of fish. Widespread in the Volga Delta pathogenic species, Eustrongylides excisus, in large quantities occurs in perch in larval state in the abdominal cavity of the body
journal: Sel skokhozyaistvennaya Biologiya