| Summary: | 碩士 === 國立中興大學 === 昆蟲學系 === 88 === Based on the age-stage, two-sex life table, the intrinsic rate of increase (r), the net reproductive rate (R0) and the mean generation time (T) for silverleaf whitefly (Bemisia argentifolii Bellows & Perring) (Homoptera: Aleyrodidae) on broccoli (Brassica oleracea L. var. italica Plenk) at 26℃are 0.142day-1, 99.1 offspring/female and 32.4 days, respectively. The population parameters for the green peach aphid (Myzus persicae (Sulzer)) (Homoptera: Aphididae) are 0.283 day-1, 48.5 offspring/female and 13.7 days under the same condition. There are significant differences between population parameters of these two species. Based on the growth of both population in separation and mixture, there are exploitation competition as well as interference competition. Using the competition model based on the two-sex life table, simulation of the separated and mixed growth shows variation of weighing coefficient and susceptibility between these two species. M. persicae population suffered more in the mixed growth. Because of the susceptibility to control agents varied among life stage of insect, simulations of timing control of these two species are performed based on the two-sex life table.
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