Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Spatio-Temporal Patterns of Foraging Success for Fishes in an Illinois Stream.
Author Angermeier, P. L. ;
CORP Author Illinois Univ. at Urbana-Champaign. Dept. of Ecology, Ethology and Evolution.;Corvallis Environmental Research Lab., OR.
Year Published 1985
Report Number EPA-R-810745; EPA/600/J-85/357;
Stock Number PB86-175528
Additional Subjects Feeding stuffs ; Fresh water fishes ; Streams ; Diets ; Invertebrates ; Stomach ; Detritus ; Substrates ; Food habits ; Animal behavior ; Seasonal variations ; Gravel ; Sands ; Availability ; Competition ; Illinois ; tables(Data) ; Graphs(Charts) ; Reprints ; Predator prey relationships ; Habitats
Library Call Number Additional Info Location Last
NTIS  PB86-175528 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 20p
Stomach contents of 10 fish species were examined to evaluate several scales of spatiotemporal variation foraging success within an Illinois stream. Most species fed primarily on aquatic or terrestrial invertebrates, but one species specialized on fine detritus. Fish are a wide variety of invertebrate taxa, and diet overlap based on prey taxa was extensive among fish species and age classes. Foraging success, measured by number and size of prey eaten, varied among seasons, years, substrate composition and amounts of woody debris. However, no factor influenced foraging success of all species, and no 2 species responded identically to all factors. Fish generally fed most successfully in June, and least successfully in Oct. Some fish ate more or larger prey in a study area with gravel-cobble substrates than in a silt-sand area, and many ate more or larger prey in sites with woody debris than in sites from which debris was removed.