Efeito do chumbo sobre a fertilização artificial e incubação de ovos de jundiá cinza ( Rhamdia quelen)

Abstract

. Aquatic environmental pollution affects the reproductive potential of various species of fish. The present experiment was carried out to evaluate the effect of lead contamination of the water used in artificial fertilization and initial egg incubation of gray jundiá (Rhamdia quelen). Two assays were carried out distributed in randomly experimental designs, composed by six treatments, with four and six replications, for the first and second assays, respectively. The first assay consisted of the contamination of artificial fertilization water with 0.00; 0.01; 0.02; 0.03; 0.04 and 0.05 mg of Pb L-1 and egg incubation in pure water. The second assay consisted of the contamination of artificial fertilization water and egg incubation water with 0.00; 0.15; 0.30; 0.45; 0.60 and 0.75 mg of Pb L-1 “plateau” tendency until 0.25 mg of Pb L-1 verified in levels of lead contamination of water above 0.25 mg of Pb L-1 concentrations levels above 0.25 mg of Pb L-1 fertilization of gray jundiá.