摘要
以在 2 7℃下、室内人工饲养的棉铃虫和棉铃虫齿唇姬蜂为材料 ,研究了寄主大小对棉铃虫齿唇姬蜂产卵和生长发育的影响。结果表明 ,寄主大小对雌蜂产卵有显著的影响。寄生率随寄主体重增加而降低 ,在被寄生产卵的棉铃虫幼虫中 ,体重小于 1 8mg的占 92 % ,大于 1 8mg的幼虫不适宜该寄生蜂产卵 ;人工饲料上饲养的棉铃虫幼虫 ,自孵化后的 1 3 6h为适合被寄生的时段。对数据的相关和回归分析表明 ,寄主寄生时体重与蜂近似幼虫体重、蜂近似幼虫体重与成蜂体重均呈显著的正相关 ,尤其在雌蜂上表现得更为显著 ;成蜂在一定的范围内 ,体重越大 ,寿命越长 ;体重过大或过小 ,寿命均有下降的趋势 ;
Effects of host size on oviposition and development of Campoletis chlorideae Uchida, the endoparasitoid of Helicoverpa armigera (Hübner) were studied in laboratory. Host size had significant influence on oviposition of the female parasitoid, and the parasitization rate decreased as the host size became larger. 92% of the parasitized host larvae were less than 18mg in weight, and the host larvae over 18mg were difficult to be parasitized. In the laboratory condition, the vulnerable period of H. armigera larvae for parasitism was 136h (ca. 6d) after hatching. Linear regression and correlation procedures were used to quantify the relationships among parameters. The host weight at time of parasitizing was positively related with approximate larval weight of the parasitoid, and approximate larval weight of the parasitoid was positively related with adult weight of the parasitoid; in female parasitoids relationship was more significant. The larger parasitoid female adult had a longer longevity in certain range except overweighted female adult; but host weight at parasitism had no effect on total development time of the parasitoid.
出处
《中国生物防治》
CSCD
北大核心
2001年第3期107-111,共5页
Chinese Journal of Biological Control
基金
中国科学院知识创新工程项目 (KSCX2 1 0 2 0 4)
农业虫鼠害综合治理研究国家重点实验室资助
