Life expectancy (e_x) and stable age distribution (C_x) of Plutella xylostella (L.) (Lep.: Yponomeutidae), exposed to sublethal doses of hexaflumuron.

摘要

The diamondback moth, Plutella xylostella (L.) is a major pest of crucifers in Iran. In this study, the influence of two sublethal concentrations (LC₁₀ and LC₂₅) of an insect growth regulator, hexaflumuron on life expectancy (e_x), stable age distribution (C_x), age-specific fertility (m_x) and number of fertile eggs per day was investigated. Results showed that the sublethal doses of hexaflumuron decreased life expectancy (e_x), age-specific fertility (m_x) and number of fertile eggs per day of P. xylostella. Also stable age distribution (C_x) of population in next generation was changed and rate of adults in sublethals was increased compared to control. According obtained results, hexaflumuron is a good choice for IPM strategy in controlling the diamondback moth.