Abstract:

To make clear the influence on predatory functional response and predation rate of Orius minitus adult to Tetranychus cinnabarinus, the starvation tolerance of Orius minitus adult was examined by leaf disc test. Based on this，the influence on functional response and predation rate by Orius minitus adult to Tetranychus cinnabarinus at various levels of starvation were studied. The results showed that the adults of Orius minitus can endure starvation for 80 hours. The functional responses of adults of Orius minitus on various ranges of starvation to adult mites of Tetranychus cinnabarinus were fitted to HollingⅡ-types. The predation in 24hours of Orius minitus starved for 72 hours was concentrated in the first 12hours of the test, especially in the first 4 hours. While the predation of Orius minitus with no starvation allotted in the whole period of test. The functional response types of adults of Orius minitus were not altered by starvation duration within a certain range, but the predation rates in the specific period were affected obviously.