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Distribution of Helminth parasites in different Organs and their seasonal rate of infestation in three Freshwater Fishes of Goalpara, Assam, India

Author Affiliations

  • 1Department of Zoology, Gauhati University, Guuwahati-14, Assam, INDIA
  • 2Department of Zoology, Gauhati University, Guuwahati-14, Assam, INDIA

Res. J. Animal, Veterinary and Fishery Sci., Volume 2, Issue (9), Pages 13-17, September,24 (2014)


The present study was conducted to identify and determine the organal distribution along with prevalence and intensity of infestation brought about by the helminth parasites in Anabas testudineus (Bloch), Colisa fasciata (Bloch and Schneider) and Trichogaster lalius (Hamilton) from three wetlands of Goalpara district, Assam during a period of Feb 2012 to March 2013. A total of 14 helminth parasites (7 trematodes, 6 nematodes and 1 acanthocephala) were detected from different digestive organs with the highest rate of infestation from intestine (74.4%, 59.5% and 45.6% viz. in A.testudineus, C.fasciata and T.lalius). The study reveals that helminthes show seasonality in prevalence, mean intensity and abundance of infestation. Irrespective of host the prevalence was maximum (63.9%, 65.9% and 66.5% in three host fishes) during pre-monsoon and minimum (43.7%, 52.4% and 44.4%) during monsoon while the intensity of infection was highest during monsoon. Density of infection or abundance was minimum during retreating monsoon while the value is approximately equal for entire three host species during rest of the seasons.


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