Spinosad fed to 4th-instar larvae for 2 h led to reduction in the percentage of pupation, but did not significantly affect adult emergence, life-span, and egg production.

• 菜喜对小菜蛾4龄幼虫化蛹率有显著降低作用，但对蛹的羽化率、雌成虫寿命及产卵量却没有明显影响；