title: Behavior of mallard ducklings from parents fed 3 ppm DDE.
abstract: Mallard ducks fed a diet containing 3 ppm DDE (equal to about 0.6 ppm in a natural succulent diet) laid eggs that contained an average of 5.8 ppm DDE; ducklings that hatched from these eggs differed from controls in behavioral tests designed to measure responses to a maternal call and to a frightening stimulus. In response to the maternal call, ducklings from parents fed DDE were hyper-responsive; compared to controls, a greater percentage approached the call and a greater percentage of those that approached remained near the call for the remainder of the test. In a test of avoidance behavior, ducklings whose parents were fed DDE traveled shorter distances from the firghtening stimulus than did controls.
mesh_terms: D000818:Animals; D000831:Animals, Newborn / Q000502:physiology*; D001362:Avoidance Learning / Q000187:drug effects; D001522:Behavior, Animal / Q000187:drug effects*; D003633:Dichlorodiphenyl Dichloroethylene / Q000494:pharmacology*; D004032:Diet; D004372:Ducks / Q000502:physiology*; D005260:Female; D008297:Male; D008431:Maternal-Fetal Exchange; D011247:Pregnancy
chemical_list: D003633:Dichlorodiphenyl Dichloroethylene