【摘要】 在人工饲养条件下,研究了蝗虫种群的消长规律与环境因子的关系。结果表明,蝗虫每雌可产卵3～10块,每块达55.0粒,孵化率为76.32%,蝗蝻雌雄比为1.5～2∶1。建立了以蝗虫为试虫,苏云金芽孢杆菌的毒力生物测定模式。选择的最佳生测条件与蝗蝻的最适生长条件一致,温度30±1℃,湿度65%～75%,500～600lx光照14～15h。同时分析了蝗虫的饲料选择及各种环境因子对生测结果的影响。更多还原

【Abstract】 The relationships between Locusta migratoria manilensis and environmental factors were studied in the laboratory. The hatching rate, fecundity and sex ratio are 76.32%, 55.30 and 1.5-2∶1, respectively. A method of bioassay to estimate effect of Bacillus thuringiensis on L. migratoria manilensis was established. The effect of locust age, food and environmental factors e.g. temperature, relative humidity and photoperiod on the results of bioassay was also analyzed.更多还原