Technical Papers of the Bureau of Sport Fisheries and Wildlife
Author :
Publisher :
Page : 640 pages
File Size : 28,59 MB
Release : 1971
Category : Fish culture
ISBN :
Technical Papers of the U.S. Fish and Wildlife Service
Author :
Publisher :
Page : 206 pages
File Size : 16,20 MB
Release : 1980
Category : Fish culture
ISBN :
Book Description
Changes in Young-of-the-year Fish Stocks During and After Filling of Lake Oahe, an Upper Missouri River Storage Reservoir, 1966-74
Author : Fred C. June
Publisher :
Page : 32 pages
File Size : 17,23 MB
Release : 1976
Category : Fish populations
ISBN :
Book Description
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.
Technical Papers of the Bureau of Sport Fisheries and Wildlife
Author : United States. Bureau of Sport Fisheries and Wildlife
Publisher :
Page : 758 pages
File Size : 17,47 MB
Release : 1966
Category : Fish culture
ISBN :
Book Description
Toxicity of Some Insecticides to Four Species of Malacostracan Crustaceans
Author : Herman O. Sanders
Publisher :
Page : 24 pages
File Size : 49,7 MB
Release : 1972
Category : Aquatic animals
ISBN :
Book Description
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.
Ecology of Larval Fishes in Lake Oahe, South Dakota
Author : William Roland Nelson
Publisher :
Page : 24 pages
File Size : 40,21 MB
Release : 1980
Category : Fishes
ISBN :
Book Description
The time and location of spawning, food and larvae, and habitats used as nursery areas by young-of-the-year fishes were studied from 1972 to 1975 in South Dakota waters of Lake Oahe, a main stem Missouri River reservoir. Sampling locations were in the tributary rivres -- the Grand Moreau, and Cheyenne -- and their embayments. Year-class strength of river-spawning species was strongly correlated with river flow rates during the spawning season. Success of reservoir-spawning species was primarily dependent on above-average water levels, which inundated terrestrial vegetation to provide a substrate for egg deposition and cover for larvae. Preserving adequate streamflow and enhancing reservoir shoreline areas by managing water levels, seeding vegetation, and eliminating grazing alongshore would probably ensure adequate reproduction of most areas.
Clinical Methods for the Assessment of the Effects of Environmental Stress on Fish Health
Author : Gary A. Wedemeyer
Publisher :
Page : 24 pages
File Size : 41,56 MB
Release : 1977
Category : Fishes
ISBN :
Book Description
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).
Biology of the Redtail Surfperch (Amphistichus Rhodoterus) from the Central Oregon Coast
Author : Donald E. Bennett
Publisher :
Page : 32 pages
File Size : 43,99 MB
Release : 1977
Category : Fishes
ISBN :
Book Description
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.
Reproduction of Spotted Bass, Micropterus Punctulatus, in Bull Shoals Reservoir, Arkansas
Author : Louis E. Vogele
Publisher :
Page : 28 pages
File Size : 24,11 MB
Release : 1975
Category : Bull Shoals Lake (Ark. and Mo.)
ISBN :
Book Description
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.
Immune Response and Antibody Characterization of the Channel Catfish (Ictalurus Punctatus) to a Naturally Pathogenic Bacterium and Virus
Author : Charles M. Heartwell
Publisher :
Page : 44 pages
File Size : 43,52 MB
Release : 1975
Category : Channel catfish
ISBN :
Book Description
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.
