Accession Number : ADA323309

Title :   Evaluation of Facilities for Collection, Bypass, and Transportation of Outmigrating Chinook Salmon.

Descriptive Note : Annual rept.

Corporate Author : IDAHO UNIV MOSCOW DEPT OF FISH AND WILDLIFE RESOURCES

Personal Author(s) : Schreck, Carl B. ; Kaattarl, Stephen ; Davis, Lawrence E. ; Pearson, Carolyn E. ; Wood, Patty A.

PDF Url : ADA323309

Report Date : OCT 1993

Pagination or Media Count : 65

Abstract : Chinook salmon smolts held at low densities (0.06 - 0.08 lbs/gal) in raceways with large (>200 mm) steelhead smolts at the little Goose facility had plasma cortisol levels similar to chinook held without large steelhead. The presence of steelhead did not appear to be stressful to juvenile chinook. Juvenile chinook passing through the downstream section of the fish size and debris separator at the little Goose facility were more stressed than fish exiting the upstream section. Smolts exiting the downstream section had higher plasma cortisol and lower plasma chloride concentrations. No differences between the two groups were found in body size, condition factor, gill histology, gill Na+/K+ ATPase, or incidence and severity of bacterial kidney disease.

Descriptors :   *DEBRIS, *BACTERIAL DISEASES, *FISHES, *BLOOD PLASMA, *FISH GILLS, SIZES(DIMENSIONS), LOW LEVEL, CHLORIDES, CONCENTRATION(COMPOSITION), LEVEL(QUANTITY), LOW DENSITY, HISTOLOGY, SEPARATORS, CORTISOL, KIDNEY DISEASES.

Subject Categories : Biochemistry
      Medicine and Medical Research
      Microbiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE