Studies on ecophysiology of fish parasites: Effect of trypanosome infection on the serum cholesterol levels of fishes

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Abstract
Serum cholesterol levels of six species of fresh water fishes were lowered due to trypanosome infection. The percentage of infection in the different species of hosts ranged from 3.27% in Clarias batrachus to 16.66% in Wallago attu. Loss in serum cholesterol level was highest (42.39%) in the spiny eel Mastocembelus armatus and lowest in the carp Cirrhina mrigala (4.56%). Thus hypocholesterolemia was evidently caused in the fishes by trypanosomes.