Occurrence of Protozoan Parasites of Channa Punctatus in Bangladesh

Abstract

Three species of myxozoa (Henneguya chaudhuryi, Henneguya bengalensis and Myxobolus sp.) and 3 species of ciliophora (Trichodina pediculus, Epistylis lwoffi and Apisoma piscicolum) and two actinosporean stages of myxoza were identified. Some 51.72% of total host fishes which were found infected with at least one of the above mentioned parasites with average load of 95.93±41.53 per infected host. High percentage (98.05) of C. punctatus possessed myxozoan infection and 1.95 had chiliophoran infection. The highest prevalence of parasitic infection was observed in host sample collected from Faridpur district and lowest (33.33%) in fish sample collected from Mymensingh. The association of parasitic infection of H. bengalensis and Myxobolus sp. with study areas was found statistically significant (p=0.024 and 0.049, respectively). Protozoan parasites were most abundant in gills of hosts. Shannon Diversity Index indicated that host fishes were not infested by more parasites and the parasite community was poorly diverged in all study sites. However, Simpson’s Diversity showed that, parasites community was moderately diverged in host fishes collected from Mymensingh district and in rest of the areas parasite community was poorly diverged.
 Asiat. Soc. Bangladesh, Sci. 46(1): 13-25, June 2020

Deciphering the impact of endoparasitic infection on immune response and gut microbial composition of Channa punctata

“…In Southeast Asian countries, spotted snakehead ( Channa punctata ) is a well-known indigenous farmed fish species with several health benefits. With high demand, the pressure for intensification and further expansion of culture systems has created many problems, including the limited availability of natural resources, increased environmental pollution, and losses due to disease outbreaks ( Rakibuzzaman et al., 2011 ; Kabita et al., 2020 ). Parasitic infections, mainly endoparasites, are major issues in C. punctata , causing growth retardation and low productivity in fish farming.…”