Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Oocyte Atresia and Reproductive Success in Fathead Minnows ('Pimephales promelas') Exposed to Acidified Hardwater Environments.
Author McCormick, J. H. ; Stokes, G. N. ; Hermanutz, R. O. ;
CORP Author Environmental Research Lab.-Duluth, MN.
Publisher 1989
Year Published 1989
Report Number EPA/600/J-89/016;
Stock Number PB89-236301
Additional Subjects Reproduction(Biology) ; Minnows ; Acidification ; pH ; Exposure ; Histology ; Ovary ; Environmental surveys ; Reprints ; Pimephales promelas ; Water pollution effects(Animals) ; Atresia ; Oocytes
Library Call Number Additional Info Location Last
NTIS  PB89-236301 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 12/18/1989
Collation 10p
The ovarian histology of fathead minnows (Pimephales promelas) chronically exposed to three levels of environmental pH was examined for evidence of reproductive impairment. Exposures occurred in three experimental running water channels receiving Mississippi River water. One of these channels was not acidified and two were dosed with H2SO4. The fish exhibited ovarian histological changes and depression of reproductive success which were directly associated with the level of environmental stress experienced. The association between these three factors was most consistent and pronounced if the fish were sampled near the end of the spawning season.