Chronic Effects of Methoxychlor on Bluegills and Aquatic Invertebrates [with List of References] PDF Download
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![Chronic Effects of Methoxychlor on Bluegills and Aquatic Invertebrates [with List of References] PDF](https://books.google.com/books/content/images/frontcover/8PJXtAEACAAJ?fife=w150-h200)
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Category : Aquatic invertebrates
Languages : en
Pages : 18
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Book Description
![Chronic Effects of Methoxychlor on Bluegills and Aquatic Invertebrates [with List of References] PDF](https://books.google.com/books/content/images/frontcover/8PJXtAEACAAJ?fife=w80-h100)
Author:
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ISBN:
Category : Aquatic invertebrates
Languages : en
Pages : 18
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Book Description
Author: Harry D. Kennedy
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ISBN:
Category : Aquatic invertebrates
Languages : en
Pages : 22
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Significantly higher numbers of aquatic insects were sampled in treated ponds than in untreated, and insect numbers at high-treatment ponds were significantly higher than at low-treatment ponds. Chironomids were dominant and significatnly increased after a certain level of treatment. Chironomids comprised 74 percent of samples from high-treatment ponds, but only 43 and 42 percent respectively fro untreated and low-treatment ponds. Methoxychlor residues were not detectable in pond-bottom mud samples.
![Chronic Effects of Methoxychlor on Bluegills and Aquatic Invertebrates [with List of References] PDF](https://books.google.com/books/content/images/frontcover/MESEAQAACAAJ?fife=w80-h100)
Author:
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Category : Aquatic invertebrates
Languages : en
Pages : 18
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Book Description
Author:
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ISBN:
Category : Government publications
Languages : en
Pages : 1730
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Author: Northwest Regional Educational Laboratory
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Category : Vocational education
Languages : en
Pages : 810
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Author: Northwest Regional Educational Laboratory
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ISBN:
Category : Agriculture
Languages : en
Pages : 140
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Author:
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Category : Wildlife conservation
Languages : en
Pages : 424
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Book Description
Author: Leroy C. Folmar
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Category : Aquatic animals
Languages : en
Pages : 24
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Toxicity tables for the herbicides acrolein, dalapon, dichlobenil, diquat, and endothal list the test organisms, types of tests, experimental conditions, and test results. Each table is followed by a list of references. The materials provide a useful source of toxicity data on these herbicides to researchers, regulatory agencies, and manufacturers.
Author: Herman O. Sanders
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Category : Aquatic invertebrates
Languages : en
Pages : 12
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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.
Author: Florence T. Wright
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Category : Atlantic salmon
Languages : en
Pages : 28
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Book Description
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.
