translate English to French: Life-cycle exposure of fathead minnows ( Pimephales promelas ) to an ethinylestradiol concentration below 1 ng/L reduces egg fertilization success and demasculinizes males.
« Life-cycle exposure of fathead minnows ( Pimephales promelas ) to an ethinylestradiol concentration below 1 ng/L reduces egg fertilization success and demasculinizes males ».