Influence of 10% Chlorfenapyr SC on the Reproduction of Mallard Duck

The effect of 10% chlorfenapyr SC on the reproduction of Mallard duck was tested. The test was composed of the control group, 0.5 mg/kg, 1.0 mg/kg and 2.0 mg/kg treated group. The results showed that the first date of laying egg was delay with the increase of treated concentration. There was no effect of chlorfenapyr on the eggshell thickness, fertility and hatchability. The results also showed that the 14-day old survivor rates of hatchlings in the control group, 0.5 mg/kg, 1.0 mg/kg and 2.0 mg/kg treated group were 31.6%, 29.2%, 16.7% and 17.0%, respectively.