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Publications

Below is a list of available WFRC peer reviewed and published science.

Filter Total Items: 2562

Effects of selenium dietary enhancement on hatchery-reared coho salmon, Oncorhynchus kisutch (Walbaum), when compared with wild coho: hepatic enzymes and seawater adaptation evaluated. Effects of selenium dietary enhancement on hatchery-reared coho salmon, Oncorhynchus kisutch (Walbaum), when compared with wild coho: hepatic enzymes and seawater adaptation evaluated.

Hatchery-reared coho salmon, Oncorhynchus kisutch (Walbaum), were fed elevated levels of selenium (as Na2SeO3) to raise eviscerated body burdens to the level measured in wild counterparts. The goal was to find a dietary concentration that would achieve the desired effect without causing damage to growth and normal development. To measure some indices of health, the detoxifying enzymes...
Authors
S.P. Felton, M.L. Landolt, R. Grace, A.N. Palmisano

First record predation on white sturgeon eggs by sympatric fishes First record predation on white sturgeon eggs by sympatric fishes

We report the occurrence of white sturgeon Acipenser transmontanus eggs in guts of four species of fish from the Columbia River. Three of the species—northern squawfish Ptychocheilus oregonensis, largescale sucker Catostomus macrocheilus, and prickly sentpin Cottus asper—are native to the river and one, common carp Cvprinus carpio, is exotic.
Authors
Allen I. Miller, L.G. Beckman

Immune and endocrine responses of adult spring Chinook salmon during freshwater migration and sexual maturation Immune and endocrine responses of adult spring Chinook salmon during freshwater migration and sexual maturation

The immune –endocrine responses in spring chinook salmon (Oncorhynchus tshawytscha) were examined during their freshwater migration and final maturation. In 1990, migrating fish had high plasma cortisol titres (means 200 ng ml−1) and generated relatively few antibody-producing cells (APC) from peripheral blood leukocytes (PBL) (100 –200 per culture). After three weeks acclimation in...
Authors
A.G. Maule, R. M. Schrock, C. Slater, M.S. Fitzpatrick, C. B. Schreck

Criteria for reducing predation by northern squawfish near juvenile salmonid bypass outfalls at Columbia River dams Criteria for reducing predation by northern squawfish near juvenile salmonid bypass outfalls at Columbia River dams

Predation by northern squawfish (Ptychocheilus oregonensis) has been documented to be significant on emigrating juvenile salmonids near juvenile bypass outfalls at hydroelectric dams on the Columbia River. Criteria for siting juvenile fish bypass outfalls to reduce predation were developed using locational data from radio-tagged northern squawfish in The Dalles Dam trailrace, Columbia...
Authors
Rip S. Shively, Thomas P. Poe, Mindi B. Sheer, Peters
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