Effect of the Insecticides Thiamethoxam and chlorantraniliprole in adults of Chrysoperla Externa (Neuroptera: Chrysopidae)
Journal Title: International Journal of Agriculture Innovations and Research - Year 2018, Vol 7, Issue 3
Abstract
The specie Chrysoperla externa is most studied in Brazil due to be strong as potential agent of pest biocontrol. This specie shows good climate adaptation and is founded in various agroecossistems. The insecticides thiamethoxan and chlorantraniliprole are largely used, but, although they have low toxicity, eventually shows dangers to non-targeted organisms, as the crisopideae. Thus, the objective of this study was to evaluate the toxicity of this insecticides in adults of C. externa. Was provided to insects a diet with solution in different dosages of the insecticides. Was used five concentrations of each insecticides and a control with distilled water and evaluated after 24, 48 and 72 hours. Of the used concentrations, only 0.59 ng a.i./μl thiamethoxam, 19.62 ng i.a/μL and 7.87 ng ia./μl chlorantraniliprole caused mortality of less than 50% of adults. The used concentration 0.59 ng a.i/μl of thiamethoxam caused abdominal distension in insects. Both insecticides cause high mortality in adults of C. externa. However, thiamethoxam presented higher toxicity to insects compared to results obtained from chlorantraniliprole treatment.
Authors and Affiliations
Priscylla Costa D antas, et al.
Keywords
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