The side effects of several plant extracts and thiamethoxam on biological parameters of common green lacewing Chrysoperla carnea (Stephens) (Neu.: Chrysopidae) under laboratory conditions

Document Type : Research Paper

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Abstract

One of the most important natural enemies of pests is common green lacewing Chrysoperla carnea (Stephens) (Neu.: Chrysopidae). The side effects of plant extracts from root of madder (Rubia tinctorum L.), seeds of dill (Aniethum graveolens L.) and seeds of Galbanum (Ferula gummosa Boiss.) and thiamethoxam were evaluated on biological parameters of C. carnea as Agonoscena pistaciae predator, at 25± 2, 65± 5% RH and 16:8 (L: D) photoperiod. The first instar larvae were assayed using Potter Spray Tower method. There was a significant effect of thiamethoxam and extracts on first instar larval period and adult's longevity. Thiamethoxam caused maximum mortality in second instar larvae and prolonged pupal period. Results showed that the extracts compared to control and pesticide had positive effects on developmental stages, and sometimes had a negative effect on adult green lacewing. So in the early stages of growth, effect of pesticide was high but gradually reduced. With the attitude that the root extract of R. tinctorum reduced developmental time and increased number of eggs per female as in the case of control, pesticide and F. gummosa, hence in pest management strategy, R. tinctorum is proposed as a compatible method in green lacewing and pistachio psylla interaction.

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History

  • Receive Date: 29 June 2015
  • Accept Date: 29 June 2015

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