Паразиты рыб Хорезмского прудхоза и меры борьбы с ними

Аннотация

Subjects of research: fish parasites of the Khorezm pond industry. Purpose of work: The Complex study of epizztic condition of spreading of pathogenic organism invasive diseases of valuable and less valuable fish in the oecologcal system of Khorezm pond farming and Working out some measures of combating against it, taking into consideration local oecological conditions. Method of research: full parasitological, field and laboratory methods. The results achieved and their novelty: The complex study of the parasitological state of fish in the Khorezm pond industry has been carried out for the first time and 68 species new for the farming have been revealed. The degree of infection of all the species of fish by parasites was distinguished, there were defined the conformities of change of fish parasite fauna from ecological factors (stream, turbidity, chemical structure of water, season of the year, food structure and fish feeding), the change of qualitative and quantitative structure of carp parasite fauna. Practical value: The results of the study of pathogene value of fish parasites entering the ponds with the plants, prove the necessity of the regular parasitological control of fish at all the stages of its breeding. Degree of embed and economic effectivity: practical recommendations for the preventive measures in the struggle against the pathogenes of the invasional fish deseases are introduced into the fish ponds of the Khorezm region and its economical profit is 3680000 sums (Acts of use in the production on May 6, 2003, and May 3, 2005). Field of application: At the higher educational establishments, at the lectures and laboratory lessand, at the fish industries of the Republic.