Nationwide residues of organochlorines in wings of adult mallards and black ducks, 1972-73
White, D.H.; Heath, R.G.
Pesticides Monitoring Journal 9(4): 175-185
1976
ISSN/ISBN: 0031-6156 PMID: 1264574 Document Number: 101520
Organochlorine residues in wings of adult mallards contained the highest mean levels of DDE, DDT, DDD, dieldrin and PCB's. Mallards and black ducks from the Atlantic Flyway and mallards from the Pacific Flyway contained significantly lower DDE residues than in 1969-70. Black ducks from the Atlantic Flyway contained significantly less dieldrin than in 1969-70, and mallards in the Central and Pacific Flyways contained significantly lower levels of PCB's. As in 1969-70, DDE residues were lowest in the Central Flyway and highest in the Atlantic Flyway. The average PCB level remained unchanged in the Atlantic Flyway but was higher in the Mississippi Flyway than in 1969-70, probably because of the unusually high levels in Alabama samples. All organochlorine residues in black ducks from the Atlantic Flyway significantly correlated. DDE concentrations in mallards from the Atlantic Flyway significantly correlated with those of DDT, DDD and PCB's.