Effects of Contaminants on Naiad Mollusks (Unionidae) PDF Download
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Author: Marian E. Havlik
Publisher:
ISBN:
Category : Mollusks
Languages : en
Pages : 30
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Book Description
Although the uptake, storage, and elimination of contaminants by naiad mollusks has been studied, relatively little information is available on toxicity. Contaminants appear to have destroyed some populations directly by exerting toxic effects, or indirectly by causing or contributing to the elimination of essential food organisms or host fish. Often two or more factors appear to work in combination to producethe total stress that adversel affects populations. Naiad mollusks are important indicators of contaminants in the environment; residues in soft tissue indicate recent or current exposure, and residues in shells indicate past exposure.
Author: Marian E. Havlik
Publisher:
ISBN:
Category : Mollusks
Languages : en
Pages : 30
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Book Description
Although the uptake, storage, and elimination of contaminants by naiad mollusks has been studied, relatively little information is available on toxicity. Contaminants appear to have destroyed some populations directly by exerting toxic effects, or indirectly by causing or contributing to the elimination of essential food organisms or host fish. Often two or more factors appear to work in combination to producethe total stress that adversel affects populations. Naiad mollusks are important indicators of contaminants in the environment; residues in soft tissue indicate recent or current exposure, and residues in shells indicate past exposure.
Author:
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ISBN:
Category : Wildlife conservation
Languages : en
Pages : 292
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Book Description
Author:
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ISBN:
Category : Power resources
Languages : en
Pages : 644
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ISBN:
Category : AGRICOLA (Information retrieval system)
Languages : en
Pages : 932
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Author:
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Category :
Languages : en
Pages : 82
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Book Description
Author: U.S. Fish and Wildlife Service
Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 50
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Author:
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Category : Biotic communities
Languages : en
Pages : 46
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Author: Richard C Banks
Publisher:
ISBN:
Category : Vertebrates
Languages : en
Pages : 96
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Book Description
This list includes the names of all Recent species known to occur, or to have occurred, in the geographic areas covered by this report. No distinction is made between resident and migratory species or between those that occur regularl and those of casual or accidental occurrence. Species that are extinct are indicated as well as species whose only occurrence is the result of introduction by man. The list includes the scientific names and English names of taxa from order to species
Author: Lee Emery
Publisher:
ISBN:
Category : Aquatic animals
Languages : en
Pages : 68
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Book Description
This bibliography is a compilation of selected references on the marking and tagging of aquatic animals, with special reference to information on different kinds of marks or tags that are available, techniques of applications, retention or recovery of marks or tags, and the effects of marks or tags on the organism. The references are arranged alphabetically byy author, consecutively numbered, and indexed by key words that enable easy access to references on particular subjects. The references are about equally divided between methods of marking fish and methods of marking other aquatic animals.
Author: Jerry L. Farris
Publisher: CRC Press
ISBN: 1420042858
Category : Science
Languages : en
Pages : 400
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Book Description
Responding to the growing need for an aggressive yet conservative approach to evaluating mussel populations, Freshwater Bivalve Ecotoxicology provides a collective review of the techniques and approaches for assessing contaminant impact on freshwater ecosystems. The editors incorporate coverage of research topics and management issues from a cross-section of scientists in the field. They explore current advances in general monitoring of population responses to stressors, fundamental concepts of ecotoxicology specific to burrowing bivalves, and useful insights that offer direction and priority for resolving specific problems challenging protection and conservation efforts. This book lays the groundwork with discussions of topics such as impact assessment, toxicokinetics, biomarkers, and pollution tolerance. The authors then explore fundamental concepts surrounding responses measured in freshwater bivalves as a consequence of chemical exposures or accumulated contaminants in target organs or tissues. They highlight the difficulties encountered with the laboratory culture of these organisms for toxicity testing or other controlled experiments, and examine the use of surrogate test organisms to relate sensitivities of response and reduce pressure on already impacted fauna. The book also reviews innovative field research using in situ bivalve toxicity testing, discusses effects-oriented tissue contaminant assessment, and concludes with threefour specific laboratory or combined field/laboratory ecotoxicology studies. A summary of methods from more than 75 laboratory toxicity studies conducted with freshwater mussels, the book provides an overview of a standardized method for conducting water-only acute and chronic laboratory toxicity tests with glochidia juvenile freshwater mussels. It focuses on studies that report measured contaminant treatments, had robust experimental designs, including replication of control and contaminant treatments, and were published in the peer-reviewed literature. The resulting array of viewpoints provides a framework that can be used to establish priorities in the rehabilitation and management of freshwater ecosystems.
