Life History Parameters of Grape- and Bean-adapted Populations of the Kanzawa Spider Mite, Tetranychus kanzawai Kishida (Acarina: Tetranychidae) on Grape and Bean

Abstract

Life history parameters of the grape (Vitis vinifera L.)—adapted Tetranychus kanazawai population (Gp) and the bean (Phaseolus vulgaris L.)—adapted one (Bp) were investigated on grape and bean, and were compared between populations or host species. On grape leaf, as Gp showed a higher survival rate of immature stages, developed more quickly and showed a higher oviposition rate than Bp, the value of rm was greater for Gp than for Bp. On bean leaf, however, these differences between the two populations were not observed. The rm values of both populations were much greater on bean leaf than on grape leaf. © 1987, JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY. All rights reserved.