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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
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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.
Supplementary Notes Pub. in North American Jnl. of Fisheries Management 4, p566-568 1984. Prepared in cooperation with Tunison Lab. of Fish Nutrition, Courtland, NY.
NTIS Title Notes Journal article.
Title Annotations Reprint: Gallbladder Color and Relative Fullness as a Field Technique for Estimating Time Since Last Feeding in Brook Trout.
PUB Date Free Form 1984
Category Codes 6C; 57Z; 98F
NTIS Prices PC A02/MF A01
Primary Description 600/03
Document Type NT
Cataloging Source NTIS/MT
Control Number 510721550
Origin NTIS
Type CAT