The developmental duration of eggs, larvae and pupae were longer than that of susceptible strain and the difference was significant.
卵、幼虫和蛹的发育历期均长于敏感品系且差异显著；
The results showed significant effects of different environment colors on the developmental duration of H. axyridis larvae in each instar.
结果显示：不同环境颜色条件对异色瓢虫幼虫各龄历期均有显著影响；
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