Laboratory Efficacy of 3-trifluoromethyl-4-nitrophenol (TFM) as a Lampricide PDF Download
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Author: Verdel K. Dawson
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 13
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Book Description
The lampricide activity 3-trifluoromethyl-4-nitrophenol (TFM) was tested under controlled laboratory conditions to evaluate factors which may influence the efficacy of the chemical. TFM was tested at temperatures of 7, 12, 17 and 22 degrees Centigrade, total water hardnesses of 12, 44, 170 and 300 mg/liter as CaCO3, and pH's of 6.5, 7.5, 8.5 and 9.0. TFM is an effective lampricide. It is more effective against larvae of the sea lamprey than against embryos and prolarval stages and slightly more effective against larvae of sea lampreys than against those of the American brook lamprey. Efficacy of the lampricide is affected very little by temperature, but is reduced in hard water, especially at high pH's. High pH decreases the activity of TFM and has the greatest influence on toxicity of any of the factors investigated. TFM is slightly more effective against exposed (Free-swimming) larvae than against those in burrows.
Author: Verdel K. Dawson
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 13
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Book Description
The lampricide activity 3-trifluoromethyl-4-nitrophenol (TFM) was tested under controlled laboratory conditions to evaluate factors which may influence the efficacy of the chemical. TFM was tested at temperatures of 7, 12, 17 and 22 degrees Centigrade, total water hardnesses of 12, 44, 170 and 300 mg/liter as CaCO3, and pH's of 6.5, 7.5, 8.5 and 9.0. TFM is an effective lampricide. It is more effective against larvae of the sea lamprey than against embryos and prolarval stages and slightly more effective against larvae of sea lampreys than against those of the American brook lamprey. Efficacy of the lampricide is affected very little by temperature, but is reduced in hard water, especially at high pH's. High pH decreases the activity of TFM and has the greatest influence on toxicity of any of the factors investigated. TFM is slightly more effective against exposed (Free-swimming) larvae than against those in burrows.
Author:
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 38
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Author: Verdel K. Dawson
Publisher:
ISBN:
Category : Dichloronitrosalicylanilide
Languages : en
Pages : 27
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Book Description
The lampricidal effects of 3-trifluoromethyl-4-nitrophenol (TFM), 2',5-dichloro-4'-nitrosalicylanilide (Bayer 73), and a 98:2 mixture of the two (TFM:2B) were tested against larvae of the sea lamprey under controlled laboratory conditions. The lampricides were tested in water temperatures of 7, 12, and 17 degrees Centigrade; total hardnesses of 44, 170, and 300 mg/liter as CaCO3; and pH's of 6.5, 7.5, and 8.5. Temperature had little influence on the toxicity of the lampricides, the effect of Bayer 73 was slowed in cold water. Water hardness did not significantly influence the activity of the 98:2 mixture. The toxicities of TFM, Bayer 73, and TFM:2B were significantly reduced in water of high pH. Burrowed sea lamprey larvae were less vulnerable to TFM, Bayer 73, and TFM:2B than were free-swimming larvae. TFM and TFM:2B were selective for free-swimming lampreys over the nontarget organisms used for comparison, but the margin of safety for nontarget organisms over burrowed sea lampreys was narrow.
Author: Verdel K. Dawson
Publisher:
ISBN:
Category : Dichloronitrosalicylanilide
Languages : en
Pages : 35
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79: When exposed to sublethal concentrations of 14C-2',5-dichloro-4'-nitrosalicylanilide (Bayer 2353), either alone or in combination with 3-trifluoromethyl-4-nitrophenol (TFM), larvae of the midge Chironomus tentans accumlated 14C residue rapidly.
Author:
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ISBN:
Category : Dichloronitrosalicylanilide
Languages : en
Pages : 26
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Author: T. D. Bills
Publisher:
ISBN:
Category : Aquatic invertebrates
Languages : en
Pages : 22
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Author:
Publisher:
ISBN:
Category : Fish as food
Languages : en
Pages : 918
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Author:
Publisher:
ISBN:
Category : Fish-culture
Languages : en
Pages : 564
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Author:
Publisher:
ISBN:
Category : Fish as food
Languages : en
Pages : 544
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