Using parasites as biological tag for Hilsa shad (Tenualosa ilisha) migration in Bangladesh waters

The study was aimed at following the movement of adolescent Tenualosa ilisha from nursery grounds to feeding and spawning or other type movements in Bangladesh waters. To accomplish this, data on metazoan endoparasites were used as biological tags for detection migratory route. A total 2667 host fishes collected eleven sites covering three different ecological habitats Bangladesh. Initial selection parasites executed by using established criteria, primarily basis level infection habitats. role incidental is also discussed. Overall fourteen species under genus endohelminths identified alimentary canal associated organs host, only them had satisfied criteria being tag. These are cestode parasite Ilisha parthenogenetica acanthocephalan Acanthosentis indica hilsai. Higher prevalence these respective trend size class fish demonstrated host‟s anadromous nature reinforced belief that T. a whole, migrates sea rivers via estuaries vice versa.
 J. Zool. 48(2): 243-251, 2020