Episootology, Treatment and Prevention of Lerneosis of Fish

Abstract

The article describes epizootology, diagnosis of lerneosis of fish that are fed in artificial reservoirs, clinical signs observed in them, as well as an analysis of scientific sources on methods of treatment and prevention. With lerneosis of fish, cases of blood clots, deep wounds, raising and loss of scales are observed on the body of fish, which leads, first of all, to loss of marketability, growth lag behind development, decreased immunity in Pisces, leading to the fact that it becomes susceptible to various infectious diseases. Lerns in the body of fish penetrate through the gills into the internal organs, causing damage to the liver and intestines, which also leads to the development of hepatitis B of the liver. During pathological studies, blood clots in the liver and intestines and necrosis of the intestinal mucosa were observed in fish with lerneosis. Fish affected by lernaea are carriers of the disease the following year, and the larval stage of lernaea is the source of the disease. Infection of fish with Lernea in fish ponds is generally much higher in improperly constructed, undrained, unsanitary ponds in winter, where their numbers can reach dozens per body of each fish.