【摘要】 大猿叶虫 Colaphellus bowringi Baly是我国十字花科蔬菜上的一种重要害虫, 以成虫在土壤中越冬和越夏, 滞育发生主要受温度和光周期调节。本文就光周期和温度对滞育后成虫生物学特性的影响进行了研究。结果表明, 在25℃下, 光周期(L14∶D10和L12∶D12) 对成虫滞育后的存活率、寿命、日平均产卵量、总产卵量均无显著影响。在长光照 (L14∶D10) 下,温度 (18℃、22℃和25℃) 对滞育后成虫的生物学特性具有明显的影响; 随温度的降低, 总产卵量呈下降趋势, 平均产卵量显著降低, 雌虫滞育后寿命显著延长, 18℃下少数个体能被诱导再次滞育。更多还原

【Abstract】 The cabbage beetle Colaphellus bowringi Baly,is a serious pest of crucifers in China. The beetle aestivates and hibernates as adult in the soil. The incidence of diapause is mainly controlled by temperature and photoperiod. Effects of photoperiod and temperature on the life history traits of post diapause adults in C. bowringi were investigated under laboratory conditions. At 25℃, survivorship, longevity, daily egg production, mean number of eggs laid per female per day and total number of eggs laid per female of post diapause adults had no significant difference between under L14∶D10 and under L12∶D12. Under L14∶D10, the life history traits of post diapause adults differed significantly at different temperatures (18℃, 22℃, 25℃). The total number of eggs laid and mean number of eggs laid per female per day of post diapause adults decreased, whereas the longevity of females significantly increased with temperature decreasing. Diapause could be reinduced in a few individuals at 18℃.更多还原