Studies on the trypanosome infection in some freshwater fishes of Arenberg ponds, Flemish Belgium
1998
Ahmad, M.S. (Government Coll., Lahore (Pakistan). Dept. of Zoology) | Ollevier, F.
Seven different species of freshwater fishes were sampled twice a month during 14 months (February 1990 to March 1991) from a freshwater body at Arenberg Ponds (Heverlee, Belgium). Fishes were examined for trypanosome infection. All fishes, from a sample of 1268 fishes, belonged to three families. Anguilla anguilla (Anguillidae) was the most infected (95.7%) fish, while more than 50% fishes families Cyprinidae and Percidae were infected with trypanosome infection. The mean intensity of the infection was, very high in A. anguilla (47.9 x 10 raise to the power is 4 tryps/ml of blood) and in other fishes it was 14.6 x 10 raise to the power is 4 tryps/ml of their blood. The abundance of infection was higher only in those fish species that had high prevalence or intensity of infection. A positive correlation was observed between parasite intensity and length of the fish but it was not significant for all fish species.
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