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Some Effects Of Ddt On The Guppy And The Brown Trout
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Book Synopsis Some Effects of DDT on the Guppy and the Brown Trout by : Susan Frances King
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.
Book Synopsis Some Effects of Ddt on the Guppy and the Brown Trout (Classic Reprint) by : Susan Frances King
Download or read book Some Effects of Ddt on the Guppy and the Brown Trout (Classic Reprint) written by Susan Frances King and published by Forgotten Books. This book was released on 2016-08-01 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Some Effects of Ddt on the Guppy and the Brown Trout Limited observations on growth and repro duction indicated that exposure to ddt did not prevent reproduction in guppies in the first 30 days of chronic exposure, but many of the guppies born in ddt were dead or died within several hours. The survival rate was lower for those born in ddt than for those born in untreated water. The data, however, were not sufficient to make definite conclusions. Observations in the literature indicate that after the first litter, insecticides will inhibit reproduction. The cause of the death of guppies in aquaria kept under con trolled conditions needs to be ascertained before the effects of one dosage of ddt on reproduction can be determined.developed in the fish first exposed to 010 and 0056 ppm ddt. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Book Synopsis Some Effects of DDT on the Guppy, Lebistes Reticuiatus, and Brown Trout, Salmo Trutta by : Susan F. King
Download or read book Some Effects of DDT on the Guppy, Lebistes Reticuiatus, and Brown Trout, Salmo Trutta written by Susan F. King and published by . This book was released on 1961 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of DDT and Other Insecticides on Fish and Wildlife by : Joseph Paul Linduska
Download or read book Effects of DDT and Other Insecticides on Fish and Wildlife written by Joseph Paul Linduska and published by . This book was released on 1948 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Some Chronic Effects of DDT on Cutthroat Trout by : Donald T. Allison
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.
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 1962 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Toxicity Of Pesticides To Fish by : Murty
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 154 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 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:
Book Synopsis Oceanic Salinities Off the South Atlantic Coast of the United States, Theodore N. Gill Cruises 1-9, 1953-54 by : William Wyatt Anderson
Download or read book Oceanic Salinities Off the South Atlantic Coast of the United States, Theodore N. Gill Cruises 1-9, 1953-54 written by William Wyatt Anderson and published by . This book was released on 1961 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Resource Publication written by and published by . This book was released on 1965 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Resource Publication (United States. Bureau of Sport Fisheries and Wildlife) by :
Download or read book Resource Publication (United States. Bureau of Sport Fisheries and Wildlife) written by and published by . This book was released on 1965 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technical Papers of the Bureau of Sport Fisheries and Wildlife by :
Download or read book Technical Papers of the Bureau of Sport Fisheries and Wildlife written by and published by . This book was released on 1967 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technical Papers by : United States. Bureau of Sport Fisheries and Wildlife
Download or read book Technical Papers written by United States. Bureau of Sport Fisheries and Wildlife and published by . This book was released on 1967 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tissue Changes in Puffers Exposed to Methoxychlor and Methyl Parathion by : Ronald Eisler
Download or read book Tissue Changes in Puffers Exposed to Methoxychlor and Methyl Parathion written by Ronald Eisler and published by . This book was released on 1967 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adult northern puffers were exposed for periods up to 45 days to either 30 parts per billion (ppb) of the organochloride insecticide methoxychlor, 20, 200 ppb of the organophosphorous insecticide methyl parathion, or to a combination of 15 ppb of methoxychlor and 10, 100 ppb of methyl parathion. These concentrations will produce approximately 5 percent mortality in 96 hours under the conditions of the experiment. Profiles were constructed on the effects of each insecticide on blood and tissue components. The visual patterns provided by these profiles suggest a means of identifying unfavorable environmental conditions before the appearence of obvious morphological or physiological changes.
Book Synopsis Technical Papers of the Bureau of Sport Fisheries and Wildlife by : United States. Bureau of Sport Fisheries and Wildlife
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 1966 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Contamination and Bioreclamation by : Arvind Kumar
Download or read book Environmental Contamination and Bioreclamation written by Arvind Kumar and published by APH Publishing. This book was released on 2004 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collects 43 Research Articles Relating To Environmental Pollution And The Steps Required To Be Taken For Their Eradication. Useful For Students, Academics, Researchers Etc. In Short For All Those Interested In Conservation Of Non-Renewable Resources For Future Generations.
Book Synopsis Pesticide-wildlife Studies by : U.S. Fish and Wildlife Service
Download or read book Pesticide-wildlife Studies written by U.S. Fish and Wildlife Service and published by . This book was released on 1963 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
