Rapid loss of lampricide from catfish and rainbow trout following routine treatment

Dawson, V. K.; Schreier, T. M.; Boogaard, M. A.; Spanjers, N. J.; Gingerich, W. H.

Abstract:

Rainbow trout (Oncorhynchus mykiss) and channel catfish (Ictalurus punctatus) were exposed to 3-trifluoromethyl-4-nitrophenol (TFM) and Bayluscide (niclosamide) during a sea lamprey control treatment of the Ford River, located in the upper peninsula of Michigan. Caged fish were exposed to a nominal concentration of 0.02 mg/L of niclosamide for a period of approximately 12 h. Samples of fillet tissue were collected from each fish species before treatment and at 6, 12, 18, 24, 48, 96, and 192 h following the arrival of the block of chemical at the exposure site. The fish were dissected, homogenized, extracted, and analyzed by high-performance liquid chromatography. The major residues found in the fillet tissues were TFM and niclosamide. Niclosamide concentrations were highest 12 h after arrival of the chemical block for rainbow trout (0.0395 ?? 0.0251 ??g/g) and 18 h after arrival of the chemical block for channel catfish (0.0465 ?? 0.0212 ??g/g). Residues decreased rapidly after the block of lampricide had passed and were below the detection limits in fillets of rainbow trout within 24 h and channel catfish within 96 h after the arrival of the lampricide.

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Article

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70024154

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Dawson, V. K.; Schreier, T. M.; Boogaard, M. A.; Spanjers, N. J.; Gingerich, W. H.

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6785

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English

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Journal of Agricultural and Food Chemistry

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Rapid loss of lampricide from catfish and rainbow trout following routine treatment; 2002; Article; Journal; Journal of Agricultural and Food Chemistry; Dawson, V. K.; Schreier, T. M.; Boogaard, M. A.; Spanjers, N. J.; Gingerich, W. H.