Record Display for the EPA National Library Catalog

RECORD NUMBER: 12 OF 32

Main Title Gallbladder Color and Relative Fullness as a Field Technique for Estimating Time Since Last Feeding in Brook Trout.
Author McCormick, J. H. ; Podoliak, H. A. ;
CORP Author Environmental Research Lab.-Duluth, MN. ;Tunison Lab. of Fish Nutrition, Cortland, NY.
Year Published 1984
Report Number EPA/600/J-84/201;
Stock Number PB85-156990
Additional Subjects Gallbladder ; Trout ; Feeding(Supplying) ; Sampling ; Color ; Darkness ; Estimating ; Food consumption ; Food supply ; Reprints ; Salvelinus fontinalis ; Brook trout
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB85-156990 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 5p
Abstract
Brook trout (Salvelinus fontinalis) fingerlings were held for up to 13 days without food. Gallbladders sampled from these fish at successive times after their last meal showed filling and darkening in color directly related to time since last feeding. It is suggested that these changes may be useful in estimating the feeding state of fish in the field.