Abstract
Fenthion, (0,0-Dimethyl0-[3-methyl-4-(methylthio)phenyl] phosphorothioate), a widely used mosquito control agent, has caused wildlife mortality. To simulate a shallow wetland environment, an exposure chamber was used containing water treated with fenthion at 1 and 10 times the field application rate of 112 g active ingredient (AI)/ ha. This system permitted an evaluation of exposure routes and the effects of fenthion in a representative species of wading bird, the black-crowned night-heron (Nycticorax nycticorax). The results suggested that herons received only a dermal exposure, and that their brain acetylcholinesterase activity was not significantly inhibited. In contrast, however, plasma butyrylcholinesterase activity was inhibited, suggesting the herons were exposed to the insecticide. The application rates and types of exposures were not life-threatening in this species.
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References
Chemagro Corporation (1963) Bayer 29493 technical data sheet. Chemagro Corp, Kansas City, MO. 7 pp
DeWeese LR, McEwen LC, Settimi LA, Deblinger RD (1983) Effects on birds of fenthion aerial application for mosquito control. J Econ Entomol 76:906–911
Duncan DB (1955) Multiple range and multiple F tests. Biometrics 11:1–42
Elder JB, Henderson C (1969) Pesticide field appraisal. Field appraisal of ULV Baytex mosquito control applications on fish and wildlife. US Bur Sport Fish Wildl Ohio Dep Nat Res Spec Rep. Washington, DC, 71 pp
Ellman GL, Courtney KD, Andres Jr V, Featherstone RM (1961) A new and rapid colorimetric determination of acetyl cholinesterase activity. Biochem Pharmacol 7:88–95
Hall RJ, Kolbe E (1980) Bioconcentration of organophosphorus pesticides to hazardous levels by amphibians. J Toxicol Environ Health 6:853–860
Hill EF, Fleming WJ (1982) Anticholinesterase poisoning in birds: Field monitoring and diagnosis of acute poisoning. Environ Toxicol Chem 1:27–38
Hill EF, Heath RG, Spann JW, Williams JD (1975) Lethal dietary toxicities of environmental pollutants to birds. US Fish Wildl Serv Spec Sci Rep Wildl No 191. Washington, DC, 61 pp
Hudson RH, Tucker RK, Haegle MA (1984) Handbook of toxicity of pesticides to wildlife. US Fish Wildl Serv Res Pub No 153. Washington, DC, 90 pp
Ludke JL, Hill EF, Dieter MP (1975) Cholinesterase (ChE) response and related mortality among birds fed ChE inhibitors. Arch Environ Contam Toxicol 3:1–21
Powell GVN, DeWeese LR, Lament TG (1982) A field evaluation of frogs as a potential source of secondary organophosphorus insecticide poisoning. Can J Zool 60:2233–2235
Seabloom RW, Pearson GL, Oring LW, Reilly JR (1973) An incident of fenthion mosquito control and subsequent avian mortality. J Wildl Dis 9:18–20
Zinkl JG, Jessup DA, Bischoff AI, Lew TE, Wheeldon EB (1981) Fenthion poisoning of wading birds. J Wildl Dis 17:117–119
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Smith, G.J., Spann, J.W. & Hill, E.F. Cholinesterase activity in black-crowned night-herons exposed to fenthion-treated water. Arch. Environ. Contam. Toxicol. 15, 83–86 (1986). https://doi.org/10.1007/BF01055252
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DOI: https://doi.org/10.1007/BF01055252