Download or read book Some Effects of DDT on the Guppy and the Brown Trout written by Susan Frances King and published by . This book was released on 1962 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Editor's note: This paper was prepared under the direction of Assistant Professor Kathryn M. Eschenberg, Mount Holyoke College and was accepted by the Faculty in partial fulfillment of the requirements for the degree of Bachelor of Arts with Honor, 1961. Despite certain limitations, described below, the paper (somewhat condensed from the original) has been accepted for publication because (1) it is an unusual and excellent study by an undergraduate, and (2) so little information is available on the subject treated. Biometricians may criticize the paper from the standpoint of small numbers and need for replication. One reviewer says: "One of the most interesting observations related to the apparent increase in resistance following exposure to effectively sublethal levels. Part of the increase, but likely only part, was due to the previous selective killing of weaker individuals. Good experimental procedure would require that this test be repeated, with parallel series of previously unexposed fish....There is need for a replicated study of numbers of young born to guppies held in DDT, especially because the numbers are so small." It is the Editor's hope that the limitations of the paper may stimulate further work in this important area.
Download or read book Special Scientific Report written by and published by . This book was released on 1962 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Acute Toxicity of Chemicals to Fish and Aquatic Invertebrates written by W. Waynon Johnson and published by . This book was released on 1980 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Winter Water Temperatures and an Annotated List of Fishes written by Robert L. Edwards and published by . This book was released on 1961 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cruise no. 126 of the Albatross III was planned and conducted to gather information about the distribution of fishes across the Continental Shelf from Nantucket Shoals to Cape Hatteras during the late winter period when water temperatures generally are at their minimum. The shelf here has a general hydrographic similarity from north to south, well described by Bigelow (1933), that makes it a particularly worthwhile area in which to study the relation of fish distribution to water temperature, depth, and other factors of the environment. Since the fish of this portion of the shelf support several different, relatively important food and industrial fisheries, as well as an intensive marine sport fishery. Cruise no. 126 served to provide data valuable to several research programs.
Download or read book Resource Publication written by and published by . This book was released on 1980 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Pathology of Fishes written by William E. Ribelin and published by Univ of Wisconsin Press. This book was released on 1975 with total page 1012 pages. Available in PDF, EPUB and Kindle. Book excerpt: Specific diseases. Lesions of organic systems. Chemical and physical agents of disease. Nutritional diseases. Neoplasia.
Download or read book Toxicity Of Pesticides To Fish written by Murty and published by CRC Press. This book was released on 2018-05-04 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present work is the first major attempt at reviewing comprehensively all the available information about the environmental fate and behaviour of the xenobiotic chemicals.
Download or read book Manual of Acute Toxicity written by Foster Lee Mayer and published by . This book was released on 1986 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: All toxicity data developed by the Columbia National Fisheries Research Laboratory since 1965 was evaluated for quality, and a database established for 4,901 tests with 410 chemicals (mainly pesticides) and 66 species of aquatic animals. Insects were the most sensitive group, followed by crustaceans, fishes, and amphibians. Rainbow trout was found to be highly sensitive.
Download or read book Special Scientific Report wildlife written by U.S. Fish and Wildlife Service and published by . This book was released on 1968 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Special Scientific Report wildlife written by and published by . This book was released on 1949 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Organochlorine Pesticides in the Environment written by Lucille F. Stickel and published by . This book was released on 1969 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each year for nearly 20 years, thousands of pounds of persistent organochlorine pesticides have been applied to outdoor areas in many countries. These compounds may last for a very long time in the environment, and be carried by wind, water, and animals to places far distant from where they are used. As a result, most living organisms now contain organochlorine residues. This paper constitutes a selective review of the literature concerning the occurrence, distribution, and effects of organochlorines in the environment.
Download or read book Pesticides Man and Biosphere written by O. P. Shukla and published by APH Publishing. This book was released on 1999-12 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Quality Criteria Data Book Effects of chemicals on aquatic life selected data from the literature through 1968 by Batelle s Columbus Laboratories written by and published by . This book was released on 1970 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Chronic Effects of DDT on Cutthroat Trout written by Donald T. Allison and published by . This book was released on 1964 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Effects on cutthroat trout (Salmo clarki lewisi) of periodic exposure to different levels of DDT in bath and in food were determined over a 20-month period involving one spawning cycle. High dosages produced a marked increase in mortality, probably by reducing the resistance to nonspecific stressors; survivors fish in high-dosage lots were significantly larger than those in control and low-DDT lots. Intermediate and low dosages of DDT generally did not measurably affect mortality, growth, or reproductive potential, indicating that a threshold level exists around 0.1 p.p.m. monthly in contact form and around 0.3 mg. DDT per kg. of fish weekly in the diet for the toxic effects of DDT.
Download or read book Technical Papers of the Bureau of Sport Fisheries and Wildlife written by United States. Bureau of Sport Fisheries and Wildlife and published by . This book was released on 1969 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Papers written by United States. Bureau of Sport Fisheries and Wildlife and published by . This book was released on 1969 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Papers of the Bureau of Sport Fisheries and Wildlife written by and published by . This book was released on 1968 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
