Document Type

Thesis - Open Access

Award Date

1968

Degree Name

Master of Science (MS)

Department

Wildlife Management

Abstract

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

Insecticides --Toxicology
Ring-necked pheasant -- Reproduction
Ring-necked pheasant --Eggs

Description

Includes bibliographical references (pages 28-29)

Format

application/pdf

Number of Pages

36

Publisher

South Dakota State University

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