Abstract

Herbicides are used for controlling weeds in ponds, reservoirs, and irrigation canals. Paraquat (PQ) causes toxic effects on fish Roach fry and Perch fry, and produce morphologic alterations on salmon. In aquatic contamination, lead (pb) also produced ecologic unbalance. It is accumulated in gills and liver of fish and diminished reduced-glutathion in eritrocites. This work reports results of studies of exposure to PQ and Pb in fish.

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