Effects of selenium on the development of Ostrinia furnacalis (Guenée)
Author of the article:HAN Xiao-Xia** ZHENG Li-Xia WEI Hong-Yi*** WANG Guang-Li
Author's Workplace：College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
Key Words：Ostrinia furnacalis, selenium, development, duration, pupal weight
Abstract： [Objectives] To investigate the influences of selenium on the growth and development of the Asian corn borer (ACB), Ostrinia furnacalis (Guenée). [Methods] Neonate O. furnacalis larvae were reared on the artificial diet containing selenium at a series of concentrations (0.001, 0.005, 0.010, 0.050, 0.100, 0.500, 1.000 mg/kg) under the laboratory condition. [Results] Low concentrations (0.001-0.100 mg/kg) of selenium enhanced ACB development, i.e., shortened the larval duration, pupal duration and increased male and female pupal weight. At the concentration of 0.100 mg/kg of selenium, O. furnacalis exhibited the optimal growth characteristics, which resulted in the highest male pupal weight, the shortest male and female pupal duration, the longest male and female adult lifespan, the highest pupation rate and emergence rate. High concentrations (0.500-1.000 mg/kg) of selenium inhibited ACB development such as prolonged male and female pupal duration, shortened male adult lifespan, reduced pupation rate and emergence rate. At the concentration of 1.000 mg/kg of selenium, O. furnacalis exhibited the worst growth characteristics, which resulted in the longest larval and pupal duration, the lightest pupal weight, the shortest adult lifespan, the lowest pupation rate and emergence rate. [Conclusion] Low concentrations of selenium had promoting effects on the development of O. furnacalis, while high concentrations exerted inhibited influences on it.