Parasitic diseases and estimation of loss due to infestation of parasites in Indian major carp culture ponds in Bangladesh

Abstract

The research work was conducted to determine the parasitic diseases and loss due to infestation of parasites in three Indian major carp (Labeo rohita, Catla catla and Cirrhinus mrigala) from three districts of Bangladesh namely Mymensingh, Sylhet and Rajshahi during the period from July 2012 to June 2013. A total of nine ectoparasite species and three endoparasite species were identified from the examined carp fish. The highest prevalence of infection (94.54%) was recorded in the host of L. rohita in winter and lowest (72.68%) in C. catla in summer. The highest abundance and mean density also in L. rohita was 14.38 and 12.64, respectively. But the lowest abundance and mean density was 14.38 and 12.64, respectively in C. catla. In the present study, the total economic loss was found BDT 35,552.50 ha-1 yr-1 due to parasitic diseases. However, overall loss due to parasitic diseases was found 11% for mortality, 11% for chemicals cost and 65% for reduction of growth of carps in the study areas.