Helminth parasites of freshwater fish represent important ecological and epidemiological components of aquatic ecosystems. This study examined abundance, intensity and prevalence of helminth parasites in the freshwater fish Channa punctatus (Bloch, 1793) from riverine localities of Deoria and Sultanpur districts of Uttar Pradesh, India. Based upon monthly host examination records and parasite counts per taxon. Standard indices were calculated following established definitions and nonparametric tests were applied to evaluate spatial variation. Pooled prevalence was comparable across sites and statistical analysis indicated no significant differences in overall infection levels. Community composition was similar with the same taxon rank order recorded in both localities. Abundance andmean intensity comparisons across matched months did not reveal site specific differences while variance to mean ratios supported aggregation of parasites in hosts. Findings suggested that helminth transmission dynamics were broadly consistent across both sites. The study emphasized the need for paired temporal sampling and robust statistical approaches in comparative parasitology and provided a baseline for fisheries health management in northern India.
Kumar et al. (Tue,) studied this question.