QUINAZOLINE INSECTICIDES

Toxicology

  • includes Pyrifluquinazon and Fenazaquin
  • Fenazaquin is moderately acutely toxic (LD50 134-138 mg/kg ) (EPA, 2007)
  • Most of ingested fenazaquin is excreted primarily in the feces and a little in the urine, mostly as metabolites (EPA, 2007;National Center for Biotechnology Information, 2015)
  • The mode of toxicity is by disruption of mitochondrial function by inhibiting mitochondrial electron transport chain through inhibition of the proton translocating NADH:ubiquinone oxidoreductase (complex I) activity. This inhibition results in oxidative damage to mites and possibly humans (EPA, 2007;National Center for Biotechnology Information, 2015)
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