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【目的】明确温度对微小花蝽Orius minutus生长发育和繁殖的影响。【方法】本研究以腐食酪螨Tyrophagus putresceniae为猎物,分别在5个恒温(15,20,25,30和35℃)条件下室内饲养,调查了温度对微小花蝽各虫态发育历期、存活率、成虫繁殖力以及种群参数的影响。【结果】在15~35℃范围内,各虫态平均发育历期均随温度升高而缩短,15℃下完成一个世代发育需要52.45 d,而35℃下仅需14.85 d。直线回归分析表明,微小花蝽世代发育起点温度为8.89℃,有效积温为359.20日·度。世代存活率和单雌平均产卵量均在25℃时最高,分别为17.07%和41.00粒。种群趋势指数在15℃和35℃下小于1,种群呈负增长;20~30℃下大于1,且25℃时最高,为3.92。净增殖率、内禀增长率和周限增长率均在25℃时最高,分别为3.32,0.04和1.04;种群世代周期以15℃时最长,为57.76 d,35℃时最短,为17.50 d。【结论】取食腐食酪螨的微小花蝽发育适宜温度范围为25~35℃,存活、繁殖和种群增长的最适温度均为25℃。这些结果为利用腐食酪螨人工饲养微小花蝽提供了基础参考数据。
【Objective】 The objective of this study was to determine the effect of temperature on the growth and reproduction of Orius minutus. 【Method】 In this study, Tyrophagus putresceniae was used as the prey and was fed indoors under five constant temperature (15, 20, 25, 30 and 35 ℃) respectively. The effects of temperature on the developmental stages, Survival rate, adult fecundity and population parameters. 【Result】 The results showed that the average developmental duration of each insect state was shortened with the increase of temperature at 15-35 ℃. It took 52.45 days to complete one generation at 15 ℃ and only 14.85 days at 35 ℃. Straight-line regression analysis showed that the onset temperature of Microdactylus spp. Was 8.89 ° C and the effective accumulated temperature was 359.20 days. The survival rate of generations and the average number of eggs laid per female were the highest at 25 ℃, which were 17.07% and 41.00 respectively. The population trend index was less than 1 at 15 ° C and 35 ° C, and the population was negatively increased; at 20-30 ° C greater than 1 and highest at 25 ° C was 3.92. The net growth rate, intrinsic rate of increase and the rate of perimeter growth were the highest at 25 ℃, which were 3.32, 0.04 and 1.04, respectively. The population generation at 57 ℃ was the longest at 15 ℃, the shortest at 35 ℃ was 17.50 d . 【Conclusion】 The optimum temperature range for development of Misoprostolus nigra is 25 ~ 35 ℃, and the optimal temperature for survival, reproduction and population growth are both 25 ℃. These results provide the basic reference data for the artificial feeding of S. tyrannosus with S. carnivora.