On the prevalence and intensity of Nybelinia sp. metacestodes in two clupeid fishes along the Ratnagiri region, west coast of India

P. Rattan, S.N. Dwivedi


The metacestode stages of tentaculariid tapeworms infest the foregut of teleosts. Two clupeids off Ratnagiri (Maharashtra State) viz. Ilisha megaloptera (Swainson) and Opisthopterus tardoore (Cuvier) were found to harbour a large number of metacestodes of Nybelinia sp. and their cysts. Both the prevalence and intensity of infection were found to be the lowest in winter, unlike in previous records. Possible reasons for the differential intensity in the two clupeids have also been discussed


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