取食转Bt+CpTI基因棉花的棉蚜对普通草蛉生长发育及繁殖力的影响

Development and fecundity of Chrysopa carnea reared on Aphis gossypii on transgenic Bt+CpTI cotton

【目的】研究取食转Bt+CpTI基因棉花的棉蚜Aphis gossypii Glover对普通草蛉Chrysopa carnea Stephens生长发育及繁殖力的影响,为转Bt基因抗虫棉花的推广和应用提供理论支持。【方法】普通草蛉取食转Bt+CpTI棉花SKG321和对照品种石远321棉花上的棉蚜后,对普通草蛉生长发育情况进行研究,并对其幼虫、蛹的存活率和成虫的羽化率及产卵量进行分析。【结果】取食转Bt+CpTI棉花上的棉蚜对普通草蛉的各龄幼虫发育历期、蛹期和产卵前期无不利影响;处理与对照间各龄幼虫存活率、蛹的存活率和成虫羽化率之间没有显著差异;取食转Bt+CpTI棉花上棉蚜的普通草蛉单雌日产卵量与对照相比没有减少,而25 d内的单雌总产卵量与对照相比差异亦不显著。【结论】取食转Bt+CpTI棉花上的棉蚜对普通草蛉的生长发育及繁殖力无负面影响。

[Objectives] The development and fecundity of Chrysopa carnea Stephens reared on Aphis gossypii Glover on transgenic Bt＋CpTI cotton and its parent cotton variety were studied in order to provide theoretical support for the use of transgenic Bt cotton. [Methods] The development, larval and pupal survival rates, eclosion rate and adult fecundity of Chrysopa carnea Stephens feeding on Aphis gossypii Glover were investigated were on both transgenic Bt＋CpTI cotton and the parental cotton variety. [Results] The results show that there was no significant difference in the development duration of larvae, pupal duration and preoviposition period, and fecundity per day and total fecundity per adult during 25 days after eclosion between the different treatments. [Conclusion] Transgenic Bt＋CpTI cotton had no negative effects on the development and fecundity of Chrysopa carnea Stephens.