Skip to main content
U.S. flag

An official website of the United States government

Publications

These publications showcase the significant science conducted in our Science Centers.

Filter Total Items: 16740

Single-feeding response of chinook salmon fry to potential feed intake modifiers Single-feeding response of chinook salmon fry to potential feed intake modifiers

A study was conducted to determine the effects of various potential feed intake modifiers on initial feed consumption by spring chinook salmon (Oncorhynchus tshawytscha). Feed intake was immediately and significantly influenced when glycine, trimethylamine, or betaine was added to experimental diets. Results support the notion that glycine enhances feed intake, whereas trimethylamine and...
Authors
S. G. Hughes

Shark viruses Shark viruses

No abstract available at this time
Authors
P. E. McAllister

Morphometric differentiation of American shad and white sucker eggs from riverine samples Morphometric differentiation of American shad and white sucker eggs from riverine samples

We developed a statistical method to distinguish the large demersal eggs of American shad from those of white sucker in riverine samples using egg morphometric analysis. Eggs were first screened by total diameter in deionized water according to ranges reported in the published literature. Differences in relative yolk diameter between the two species were then determined statistically...
Authors
R. M. Ross, R. M. Bennett

Paper plant effluent revisited-southern Lake Champlain, Vermont and New York Paper plant effluent revisited-southern Lake Champlain, Vermont and New York

We used geologic and geochemical techniques to document the change with time of the distribution and concentration of contaminated bottom sediments in southern Lake Champlain near an International Paper Company plant. Our work, initiated in 1972, was expanded on behalf of Vermont citizens in a class-action suit against the International Paper Company. To update our 1972-1973 results, we...
Authors
R.S. Haupt, D. W. Folger

A procedure for partitioning bulk sediments into distinct grain-size fractions for geochemical analysis A procedure for partitioning bulk sediments into distinct grain-size fractions for geochemical analysis

A method to separate sediments into discrete size fractions for geochemical analysis has been tested. The procedures were chosen to minimize the destruction or formation of aggregates and involved gentle sieving and settling of wet samples. Freeze-drying and sonication pretreatments, known to influence aggregates, were used for comparison. Freeze-drying was found to increase the silt...
Authors
A. Barbanti, Michael H. Bothner
Was this page helpful?