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Age Growth Sexual Maturity And Food Of Channel Catfish In Central Lake Oahe 1968 69
Download Age Growth Sexual Maturity And Food Of Channel Catfish In Central Lake Oahe 1968 69 full books in PDF, epub, and Kindle. Read online Age Growth Sexual Maturity And Food Of Channel Catfish In Central Lake Oahe 1968 69 ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Age, Growth, Sexual Maturity, and Food of Channel Catfish in Central Lake Oahe, 1968-69 by : Victor J. Starostka
Download or read book Age, Growth, Sexual Maturity, and Food of Channel Catfish in Central Lake Oahe, 1968-69 written by Victor J. Starostka and published by . This book was released on 1974 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Channel catfish were collected with gill nets, trawl, and trap nets at three localities in Lake Oahe for the study of year-class strength, growth in length and weight, age composition, sexual maturity, and food.
Book Synopsis Technical Papers of the U.S. Fish and Wildlife Service by :
Download or read book Technical Papers of the U.S. Fish and Wildlife Service written by and published by . This book was released on 1974 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Changes in Young-of-the-year Fish Stocks During and After Filling of Lake Oahe, an Upper Missouri River Storage Reservoir, 1966-74 by : Fred C. June
Download or read book Changes in Young-of-the-year Fish Stocks During and After Filling of Lake Oahe, an Upper Missouri River Storage Reservoir, 1966-74 written by Fred C. June and published by . This book was released on 1976 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Toxicity of Three Herbicides (butyl, Isooctyl, and Propylene Glycol Butyl Ether Esters of 2,4-D) to Cutthroat Trout and Lake Trout by : D. F. Woodward
Download or read book Toxicity of Three Herbicides (butyl, Isooctyl, and Propylene Glycol Butyl Ether Esters of 2,4-D) to Cutthroat Trout and Lake Trout written by D. F. Woodward and published by . This book was released on 1978 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two formulations of the herbicide 2,4-D (2,4-dichlorophenoxyacetic acid) - the butyl ester (BE) and the propylene glycol butyl ether ester (PGBEE) -- had 96-h LC50's to cutthroat trout and lake trout ranging from 490 to 1,200 microgram/liter in static tests. A third formulation -- the isooctyl ester (IE) -- was not toxic to cutthroat trout or lake trout at concentrations below 60.000 microgram/liter. The butyl ester (2,4-D BE) was slightly more toxic than 2,4-D PGBEE, and the toxicity of both esters increased as water temperature decreased.
Download or read book Resource Publication written by and published by . This book was released on 1987 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Changes in Distribution of Trout in Great Smoky Mountains National Park, 1900-1977 by : George Alan Kelly
Download or read book Changes in Distribution of Trout in Great Smoky Mountains National Park, 1900-1977 written by George Alan Kelly and published by . This book was released on 1980 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Significant changes have occurred in the distribution of trout in streams of Great Smoky Mountains National Park since 1900. By the mid-1970's the original range of the native brook trout had been reduced by about 70% and the species was relegated to suboptimal habitat in head water streams. Most of the stream sections lost by brook trout became the territory of the introduced rainbow trout, which in 1977 occupied about 80% of the Park waters. After 1950, brown trout introduced in State waters outside the Park established reproducing populations in some 50 miles of stream formerly occupied only by rainbow trout. If current trends continue, the recovery of brook trout in Park water may be difficult, if not impossible, and brown trout may occupy much of the territory now held by rainbow trout.
Book Synopsis Reproduction of Spotted Bass, Micropterus Punctulatus, in Bull Shoals Reservoir, Arkansas by : Louis E. Vogele
Download or read book Reproduction of Spotted Bass, Micropterus Punctulatus, in Bull Shoals Reservoir, Arkansas written by Louis E. Vogele and published by . This book was released on 1975 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Atlantic Salmon (Salmo Salar) by : Florence T. Wright
Download or read book Atlantic Salmon (Salmo Salar) written by Florence T. Wright and published by . This book was released on 1975 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: North American stocks of Atlantic salmon (Salmo salar) have been declining. One measure being employed to reverse that trend is increased hatchery production. As with husbandry of other animals, intensive rearing is usually associated with higher than normal health risks. Research on diseases of Atlantic salmon can help prevent, reduce, or otherwise control mortality due to problem parasites, infections, and other diseases. For planning of research as well as for diagnostic work, health management, and husbandry, published information on diseases of the Atlantic salmon must be readily available. Inasmuch as the literature is widely scattered, the purpose of this work is to compile a bibliography from international sources on the diseases (detection, diagnosis, identification, and control) of Atlantic salmon. Most of the references are arranged alphabetically by author, either have been annotated by the staff of the Eastern Fish Disease Laboratory, or are abstracts by the author.
Download or read book Sport Fishery Abstracts written by and published by . This book was released on 1975 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An annotated bibliography of the rare fishes of the Upper Missouri River System by : Timothy W. Joseph
Download or read book An annotated bibliography of the rare fishes of the Upper Missouri River System written by Timothy W. Joseph and published by . This book was released on 1977 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Research Publication Series of the U.S. Fish and Wildlife Service, 1889-1985 by :
Download or read book Selected Research Publication Series of the U.S. Fish and Wildlife Service, 1889-1985 written by and published by . This book was released on 1987 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: A bibliography comprising annotated citations of 2037 scientific and technical publications from ten series issued by the U.S. Fish and Wildlife Service. Includes a six-page introduction containing a history of the Service and a description of the research and development series.
Book Synopsis Reducing Predation Mortality at the Tracy Fish Test Facility by : Kurt D. Fausch
Download or read book Reducing Predation Mortality at the Tracy Fish Test Facility written by Kurt D. Fausch and published by . This book was released on 2000 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reproduction of Smallmouth Bass, Micropterus Dolomieui, in Bull Shoals Lake, Arkansas by : Louis E. Vogele
Download or read book Reproduction of Smallmouth Bass, Micropterus Dolomieui, in Bull Shoals Lake, Arkansas written by Louis E. Vogele and published by . This book was released on 1981 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Smallmouth bass were studied in Bull Shoals Lake to determine the nesting requirements and reproductive capabilities of the species in a reservoir. Underwater observations were conducted weekly in five study areas during the spawning seasons of 1969-76. Length of spawning season was affected by the rate of water temperature rise during the nesting period. Active nests were found at ambient temperatures of 13.3-22.5 degrees Centigrade. Nest were generally on gently sloping rock and gravel bottoms, beside permanent objects such as rocks or sunken logs, and at densities of less than one per 100 m of shoreline.
Book Synopsis Abate - Effects of the Organophosphate Insecticide on Bluegills and Invertebrates in Ponds by : Herman O. Sanders
Download or read book Abate - Effects of the Organophosphate Insecticide on Bluegills and Invertebrates in Ponds written by Herman O. Sanders and published by . This book was released on 1981 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Application of the organophosphate insecticide Abate three times (at about monthly intervals) to duplicate 0.04 ha earthen ponds at 18 g/ha (4 micrograms/liter) -- the recommended application rate -- and 180 g/ha (40 micrograms/liter) caused no mortality on blugills. In ponds treated with 18 g/ha fewer bluegill fry were produced than in control ponds, brain acetylcholinesterase (AChE) activity was not affected, and accelerated growth of both fry and adults appeared to result from heavy feeding on dead or moribund Diptera larvae that resulted from the first two applications of Abate. The routine use of Abate at the recommended rate should have little adverse effect on fishery resources.
Book Synopsis Chlorinated Hydrocarbons as a Factor in the Reproduction and Survival of Lake Trout (Salvelinus Namaycush) in Lake Michigan by :
Download or read book Chlorinated Hydrocarbons as a Factor in the Reproduction and Survival of Lake Trout (Salvelinus Namaycush) in Lake Michigan written by and published by . This book was released on 1981 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecology of Larval Fishes in Lake Oahe, South Dakota by : William Roland Nelson
Download or read book Ecology of Larval Fishes in Lake Oahe, South Dakota written by William Roland Nelson and published by . This book was released on 1980 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Verification of a Model for Predicting the Effect of Inconstant Temperature on Embryonic Development of Lake Whitefish (Coregonus Clupeaformis) by : William H. Berlin
Download or read book Verification of a Model for Predicting the Effect of Inconstant Temperature on Embryonic Development of Lake Whitefish (Coregonus Clupeaformis) written by William H. Berlin and published by . This book was released on 1977 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eggs stripped from lake whitefish spawning in Lake Michigan were incubated in the laboratory at temperatures similar to those on whitefish spawning grounds in Lake Michigan during December-April. Observed times from fertilization to attachment of each of 21 developmental stages were used to test a model that predicts the rate of development at daily fluctuating temperatures; the model relates rate of development for any given stage j, expressed as the reciprocal of time (Rj), to temperature (T). The generalized equation for a developmental stage is Rj = abt ct[squared]. The model was used to predict the effects of small temperature increases (caused by a hypothetical waste-heat discharge) on the rate of development and time of hatching of lake whitefish eggs.
