Susceptibility of the European earwig, Forficula auricularia, to insecticide residues on apple leaves
نویسنده
چکیده
The European earwig (Forficula auricularia) is potentially a predator of a number of insect pests in apple orchards. However, its effectiveness as a natural enemy in apple orchards may be compromised by insecticide sprays. A laboratory bioassay of eight insecticides currently used in Integrated Fruit Production (IFP) apple orchards and one as-yet unregistered product was undertaken to determine their effects on earwigs. Adult earwigs were placed in ventilated containers where they were exposed to insecticide residues on apple leaves and monitored on four occasions over 10 days. Indoxacarb, thiacloprid, spinosad and diazinon caused the greatest mortality to earwigs while carbaryl appeared to be less harmful. Chlorantraniliprole, spirotetramat, emamectin benzoate and methoxyfenozide caused no increased mortality of earwigs compared with the control. Identification and avoidance of harmful insecticides may help to enhance the potential of earwigs as natural enemies in apple orchards.
منابع مشابه
Contact Toxicity and Residual Efficacy of Indoxacarb against the European Earwig (Dermaptera: Forficulidae)
Indoxacarb (Arilon 20WG) was evaluated against a nuisance pest, the European earwig (Forficula auricularia), and was found to be an effective contact toxicant with residual activity on substrates commonly encountered in urban environments. Within 16 h of being directly sprayed with indoxacarb, ≥90% of earwigs from two populations were either ataxic, moribund, or dead, and 100% displayed these s...
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