Resistance to 3-trifluoromethyl-4-nitrophenol (TFM) in Sea Lamprey PDF Download
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Author: Ronald J. Scholefield
Publisher:
ISBN:
Category : Lampreys
Languages : en
Pages : 13
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Book Description
Author: Ronald J. Scholefield
Publisher:
ISBN:
Category : Lampreys
Languages : en
Pages : 13
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Book Description
Author: Great Lakes Fishery Commission
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 22
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Author: U.S. Fish and Wildlife Service
Publisher:
ISBN:
Category : Lampreys
Languages : en
Pages : 2
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Author: Michael Le Clair
Publisher:
ISBN:
Category : Biochemistry
Languages : en
Pages : 198
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Book Description
The pesticide, 3-trifluoromethyl-4-nitrophenol (TFM), has been highly successful in the control of sea lamprey (Petromyzon marinus ) populations in the Great Lakes. Treatments with TFM involve applying it to streams, where it targets larval sea lamprey which live burrowed in the stream substrate. While the toxic mechanism of TFM has been elucidated, and its effects on sea lamprey described, its effects on non-target fish species such as rainbow trout ( Oncorhynchus mykiss ) and lake sturgeon (Acipeisser fulvescens ) are not as well understood. The present work demonstrated that rainbow trout show a great capacity to detoxify the lampricide using glucuronidation, when exposed to TFM concentrations typically used in TFM applications, and with no adverse physiological effects. Larval sea lamprey, on the other hand, showed very little ability to detoxify TFM, and experienced pronounced reductions in glycogen concentration in the liver. In contrast to previous suggestions, lake sturgeon were able to biotransform TFM and generate TFM-glucuronide at levels that were similar to those observed in rainbow trout. However, they were exposed to a lower concentration of TFM, which does not rule out possible toxic effects of TFM at higher concentrations. In conclusion, this study has demonstrated that rainbow trout readily tolerate TFM at environmentally relevant concentrations, and that lake sturgeon are capable of TFM detoxification. This suggests that the greater sensitivity of lake sturgeon is a result of other factors such as body size, glycogen stores and/or possibly limitations in their capacity to use glucuronidation to detoxify TFM.
Author:
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages :
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Author: Leif L. Marking
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 27
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Book Description
The lampricide 3-trifluoromethyl-4-nitrophenol (TFM) is applied to tributary streams of the Great Lakes for controlling larvae of the sea lamprey. During treatments for lamprey control, cohabiting, nontarget fish are also exposed to TFM. Knowledge of the margin of safety for these fish is vitally important to the reduction of undesired effects of field applications. The lampricide is toxic to 15 species of coldwater and warmwater nontarget fish. The toxicity of TFM is influenced by temperature, water hardness, and pH. For certain species, more than 50 times as much chemical is needed to produce the same effect at pH 9.5 as at pH 6.5. The most influential factor is pH. In laboratory test water, TFM detoxifies slowly; solutions lose little or no activity over periods of 8 weeks.
Author:
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 43
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Book Description
The lampricide 3-trifluoromethyl-4-nitrophenol (TFM) is applied to tributary streams of the Great Lakes for controlling larvae of the sea lamprey. During treatments for lamprey control, cohabiting, nontarget fish are also exposed to TFM. Knowledge of the margin of safety for these fish is vitally important to the reduction of undesired effects of field applications. The lampricide is toxic to 15 species of coldwater and warmwater nontarget fish. The toxicity of TFM is influenced by temperature, water hardness, and pH. For certain species, more than 50 times as much chemical is needed to produce the same effect at pH 9.5 as at pH 6.5. The most influential factor is pH. In laboratory test water, TFM detoxifies slowly; solutions lose little or no activity over periods of 8 weeks.
Author: Stephen John Croci
Publisher:
ISBN:
Category : Sea lamprey
Languages : en
Pages : 140
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Book Description
Author: R. A. Schnick
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 33
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Book Description
The search for a selective toxicant to control the sea lamprey, scourge of Great Lakes fisheries, culminated in the discovery of TFM (3-trifluormethyl-4-nitrophenol) in the late 1950's. The research, however, had only begun on its chemical and physical properties, efficacy, toxicity to non-target and target species, residues, and methods. Federal, State, university, and industrial agencies contributed much in the effort to determine the effect of TFM on the environment and other organisms; however, much still remains to be done if TFM is to gain continued clearance by the Environmental Protection Agency for use as a larval lampricide in the aquatic environment.
