Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Toxaphene effects on reproduction, growth, and mortality of brook trout /
Author Mayer, F. L. ; Mehrle, Jr., Paul M. ; Dwyer., William P.
Other Authors
Author Title of a Work
Mehrle, Paul M.
Dwyer, William P.
CORP Author Fish and Wildlife Service, Columbia, Mo. Fish-Pesticide Research Lab.;Environmental Research Lab., Duluth, Minn.
Publisher Available from National Technical Information Service,
Year Published 1975
Report Number EPA/600/3-75/013; EPA-ROAP-16AAK
Stock Number PB-249 303
Subjects Fishes--Effect of water pollution on. ; Trout--Diseases and pests. ; Insecticides--Toxicology. ; Toxaphene.
Additional Subjects Insecticides ; Pesticides ; Trout ; Fishes ; Toxicology ; Reproduction(Biology) ; Collagens ; Growth ; Mortality ; Exposure ; Terpenes ; Chlorine aliphatic compounds ; Aquatic animals ; Water pollution ; Toxaphene ; Salvelinus fontinalis ; Salmonidae ; Water pollution effects(Animals)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB-249 303 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation viii, 42 pages : illustrations ; 28 cm.
Yearling brook trout (Salvelinus fontinalis) were continuously exposed to toxaphene (0, 39, 68, 139, 288, and 502 ng/l) in a flow-through diluter system. Day length and water temperature were altered monthly to correspond to natural conditions. Adult growth was reduced in the 288 and 502 ng/l toxaphene exposures, and the added stress of spawning activities caused extensive mortalities in these concentrations. The numbers of eggs spawned and percent viability were inversely related to increasing toxaphene concentrations. All groups of fry exposed to toxaphene had reduced rates of growth and survival. Biochemical investigations on fry backbones demonstrated that bone collagen may be a sensitive indicator of normal and abnormal growth and development prior to being observed in the whole fish. Toxaphene was accumulated by brook trout 5,000 to 76,000 times that in the water and the more chlorinated isomers of toxaphene were preferentially stored.
Prepared for U.S. Environmental Protection Agency, Office of Research and Development, Environmental Research Laboratory, Duluth, Minnesota under Contract no. EPA-IAG-0153 (D). Includes bibliographical references (pages 36-41). Microfiche.