昆虫学报 ›› 2016, Vol. 59 ›› Issue (6): 647-653.doi: 10.16380/j.kcxb.2016.06.008

• 研究论文 • 上一篇    下一篇

温度对微小花蝽生长发育和繁殖的影响

丁尧, 杨群芳*, 李庆, 蒋春先, 王海建   

  1. (四川农业大学农学院, 成都 611130)
  • 出版日期:2016-06-20 发布日期:2016-06-20

Effects of temperature on the development and reproduction of Orius minutus (Hemiptera: Anthocoridae)

DING Yao, YANG Qun-Fang*, LI Qing, JIANG Chun-Xian, WANG Hai-Jian   

  1. (College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China)
  • Online:2016-06-20 Published:2016-06-20

摘要: 【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。

关键词: 微小花蝽, 温度, 发育, 繁殖, 发育起点温度, 有效积温, 种群参数

Abstract: 【Aim】 To illustrate the influences of temperature on the development and reproduction of experimental populations of Orius minutus. 【Methods】 At a temperature gradient (15, 20, 25, 30 and 35℃), the developmental duration, survival rate, fecundity and population parameters of O. minutus on prey Tyrophagus putresceniae were investigated in the laboratory. 【Results】 Within the constant temperatures ranging from 15 to 35℃, the average duration of various developmental stages of O. minutus shortened as the temperature rose gradually. O. minutus needed 52.45 d to complete a life cycle at 15℃, while needed 14.85 d at 35℃. The linear regression analysis showed that the developmental threshold temperature for O. minutus was 8.89℃, and its effective cumulative temperature was 359.20 day-degree. The generation survival rate and the number of eggs laid per female peaked at 25℃, being 17.07% and 41.00, respectively. The population trend index was less than 1 at 15 and 35℃, demonstrating that the mean population growth is negative. On the contrary, the population trend index was greater than 1 at 20-30℃ and reached the maximum (3.92) at 25℃. The net reproductive rate, the intrinsic rate of increase and the finite rate of increase peaked at 25℃, being 3.32, 0.04 and 1.04, respectively. The generation time of the population was the longest (57.76 d) at 15℃, but the shortest (17.50 d) at 35℃. 【Conclusion】 The most suitable temperature range for the development of O. minutus on T. putresceniae is 25-35℃, while the most suitable temperature for its survival, reproduction and the population growth is 25℃. These results provide the basic reference data for artificial rearing of O. minutus using T. putresceniae.

Key words: Orius minutus, temperature, development, reproduction, developmental threshold temperature, effective accumulated temperature, population parameters