Tests Of Variations Of The Abernathy Salmon Diet 1970
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| Author | : Laurie G. Fowler |
| Publisher | : |
| Total Pages | : 18 |
| Release | : 1972 |
| Genre | : Chinook salmon |
| ISBN | : |
The 1970 fall chinook salmon feeding trials indicated that dry pelleted diets were equal to moist pelleted diets with similar formulations. A superior diet was produced by reducing the ratio of dried whey product and wheat germ meal to 1:1 and eliminating cottonseed meal. This formulation feed at a 45-percent protein level was more efficient than other protein levels fed. Growth was not reduced when the soybean oil supplement was lowered from 6 to 2 percent of the diet. Two corn distillers' products that were substituted as partial replacements for dried whey product did not enhance fish growth. Storage of the Abernathy dry pellet at room temperature did not alter the nutritional adequacy of the diet.
| Author | : |
| Publisher | : |
| Total Pages | : 398 |
| Release | : 1972 |
| Genre | : Fish-culture |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 260 |
| Release | : 1974 |
| Genre | : Fish culture |
| ISBN | : |
| Author | : Fred C. June |
| Publisher | : |
| Total Pages | : 32 |
| Release | : 1976 |
| Genre | : Fish populations |
| ISBN | : |
Abundance increased and was highest in the lower third of the reservoir while it was filling, whereas it decreased and was generally highest in the upper two-thirds of the reservoir after it was filled. Abundance of species produced in littoral areas was greater wwhile the reservoir was filling -- particularly in years when spring water levels covered vegetation, fluctuated little, and were maintained through May or longer -- than after the reservoir was filled.
| Author | : United States. Bureau of Sport Fisheries and Wildlife |
| Publisher | : |
| Total Pages | : 758 |
| Release | : 1966 |
| Genre | : Fish culture |
| ISBN | : |
| Author | : Herman O. Sanders |
| Publisher | : |
| Total Pages | : 24 |
| Release | : 1972 |
| Genre | : Aquatic animals |
| ISBN | : |
Acute and long-term (20-day) toxicities of 40 insecticides to four species of freshwater malacostracan crustaceans (the scud, crayfish, glass shrimp, and aquatic sowbug) were determined in static and intermittent-flow bioassays. An extremely wide range in toxicity was found with scuds generally being the most sensitive, followed in descending order by glass shrimp, sowbugs, and crayfish.
| Author | : Gary A. Wedemeyer |
| Publisher | : |
| Total Pages | : 24 |
| Release | : 1977 |
| Genre | : Fishes |
| ISBN | : |
Clinical methods are presented for biological monitoring of hatchery and native fish populations to assess the effects of environmental stress on fish health. The choice of methods is based on the experience of the authors and the judgment of colleagues at fishery laboratories of the U.S. Fish and Wildlife Service. Detailed analysis methods, together with guidelines for sample collection and for the intrepretation of results, are given for tests on blood (cell counts, chloride, cholesterol, clotting time, cortisol, glucose, hematocrit, hemoglobin, lactic acid, methemoglobin, osmolality, and total protein); water (ammonia and nitrate content); and liver and muscle (glycogen content).
| Author | : Donald E. Bennett |
| Publisher | : |
| Total Pages | : 32 |
| Release | : 1977 |
| Genre | : Fishes |
| ISBN | : |
Data on certain aspects of the life history of the redtail surfperch were collected along the central coast of Oregon, from April 1967 through April 1969. Annulus formation occured during February through June, usually earlier in young than in older fish. Mating occurred from late December to early January, and the young were born from July through September. The number of embryos per female ranged from 1 to 39 (mean 13.3) and increased linearly with the length and weight of the females. Food of the fish from the surf zone included crustaceans (by far the most important group in both frequency of occurrence and total volume) and (in order of decreasing importance) fishes, mollusks, and polychaetes. Parasites of the redtail surfperch were immature nematodes (Anisakinae) ; the digenetic trematode Genitocotyle acirra; the monogenetic trematode, Diclidophora sp.; and the copepods, Caligus sp., Clavella sp., and Argulus catostomi.
| Author | : Louis E. Vogele |
| Publisher | : |
| Total Pages | : 28 |
| Release | : 1975 |
| Genre | : Bull Shoals Lake (Ark. and Mo.) |
| ISBN | : |
Spotted bass, Micropterus punctulatus, were studied in Bull Shoals Reservoir during 1966-71 to determine some of the environmental requirements for successful spawning and to estimate the reproductive potential of the species.
| Author | : Charles M. Heartwell |
| Publisher | : |
| Total Pages | : 44 |
| Release | : 1975 |
| Genre | : Channel catfish |
| ISBN | : |
Partial antibody characterization indicates that specific channel catfish immunoglobulins are macroglobulins with characteristics like those of most fish immunoglobulins and similar to those of human immunoglobulin-M.
