Mode of diapause inheritance in the Kanzawa spider mite, Tetranychus kanzawai (Acari : Tetranychidae)

By crossing experiments between selected diapause and non-diapause strains of Tetranychus kanzawai, we clarified the inheritance mode of diapause of t he mites. The results showed that the "diapause" of T. kanzawai is a domina nt character over "non-diapause" and that the diapause character is control led by a simple Mendelian inheritance. This inheritance mode is different f rom that of T. urticae, in which the diapause is under polygenic control wi th a strong maternal effect involved.