关键词: 氮滞留效应, 生态动力学模型, 多时间尺度, 山美水库, 影响因素

Abstract: Marking insects with Rb is a low cost, easy to use and environmentally safe technique in entomological research for understanding the insect population dynamics, migration, dispersal, mating competition, feeding behavior, and other ecological interactions. The ideal marker should persist without inhibiting the insect’s “normal” biology. The present study investigated the influence of Rb incorporated into larvae diet on the marking efficiency and life parameters of cotton bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae). Feeding 1000-4000 mg·L^-1 RbCl in artificial diet effectively marked the adults without any negative effect on the survival, development and flight. Rb could be detected in the adults for at least 10 days. Furthermore, Rb was also detected in the unmarked (not fed RbCl) females when they mated with males feeding on a diet containing RbCl. Therefore, 1000-4000 mg·L^-1 are the suitable RbCl concentrations for marking cotton bollworm.

Key words: multiple timescales, ecological dynamic model, nitrogen retention effect, influencing factors, Shanmei Reservoir.