In this study, we investigated the selection behavior of Microplitis pallidipes Szépligeti on Spodoptera exigua(Hübner) and Spodoptera litura (Fabricius), and distinguish between virus infected and noninfected S. litura larvae. The effects on learning experience by parasitoid on its host selection. And Preliminary Study on the identify mechanism of virus infected and noninfected S. litura larvae. The results are as follows:
1 The selection behavior of M. pallidipes to S. exigua and S. litura
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