Thesis - Open Access
Master of Science (MS)
Effects of dieldrin on penned hen pheasants (Phasianus colchicus) which were the offspring of hens receiving encapsulated dieldrin the previous year were measured. Hens produced by the previous year's control group received 0, 6, 8, or 12 mg of dieldrin per week for 14 weeks. Hens from treated groups received 0 or 6 mg per week. Effects of dieldrin were evaluated by influences upon reproductive success. Mortality occurred in all groups receiving dieldrin, and appeared to be correlated with a reduction in egg production. Dieldrin lowered egg production by reducing food consumption in the 12 mg group and two groups which were offspring of 6 mg birds. °Fertility and hatchability of eggs were significantly lower in groups where the hen had received dieldrin residues via the egg. Limited observations were also made on effects of dieldrin on behavior. Apparently 8 mg hens passed enough dieldrin in eggs to alter their progeny's behavior.
Library of Congress Subject Headings
Ring-necked pheasant -- Reproduction
Ring-necked pheasant --Eggs
Includes bibliographical references (pages 28-29)
Number of Pages
South Dakota State University
Baxter, William Lyman, "Effects of Dieldrin on Reproduction of Penned Hen Pheasants in the Second Generation" (1968). Theses and Dissertations. 13.