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Publications

Find out more about Species Management Research Program through our publications. Browse the entire list below or by specific topics at the links below.

Filter Total Items: 653

Effect of differential gastric evacuation and multispecies prey items on estimates of daily energy intake in juvenile Chinook salmon

The caloric density of stomach contents in juvenile chinook salmon,Oncorhynchus tshawytscha, was not affected by gastric evacuation, suggesting a constant caloric density of stomach contents during evacuation. Differences in the caloric density of prey consumed did affect caloric density of stomach contents over a 24-h period. Consumption of the amphipodCorophium sp. was associated with reduced ca
Authors
A.S. Kolak, D.W. Rondorf

Histochemistry of leucine aminoaphthylamidase (LAN) in rainbow trout (Salmo gairdneri)

The histochemistry of leucine aminonaphthylamidase (LAN) was studied in frozen tissue sections of rainbow trout both in yearling and adult fish. Age of fish had relatively little effect upon the results. The most intense LAN color production was in epithelial cells of midgut, pyloric ceca, hindgut, and in some segments of kidney tubules. Lower levels of LAN were evident in liver cells of Kupffer,
Authors
Gerald R. Bouck

Dietary Factors and Hepatoma in Rainbow Trout (Salmo gairdneri). I. Aflatoxins in Vegetable Protein Feedstuffs

Aflatoxins (toxic metabolites of the mold Aspergillus flavus) were present in a commercial trout ration causing hepatoma in rainbow trout. Cottonseed meal and solvent extracts of cottonseed meal and of rations containing cottonseed meal and peanut meal were found by chemical assay and confirmed by duckling assay to contain aflatoxins. Diets containing these materials and a purified test diet to wh
Authors
R.O. Sinnhuber, J.H. Wales, J.L. Ayers, R.H. Engebrecht, D.F. Amend

Mycobacterium salmoniphilum sp. nov. from salmonoid fishes

The presence of mycobacteria in salmonoid fishes was first recorded by Earp, Ellis, and Ordal (1) in 1953. Acid-fast bacilli had previously been reported from other cold-blooded animals including fishes of fresh-water and marine origin; recent reviews have been presented by Vogel (2) and Parisot (3). The initiation of an intensive search for bacteria of this group revealed their widespread distrib
Authors
A. J. Ross