温度对拟小食螨瓢虫捕食皮氏叶螨成螨功能反应的影响  

Effects of temperature on predatory functional responses of Stethorus parapauperculus to Tetranychus piercei adults

作　　者：符悦冠[1] 耿召良[1] 张方平[1] 金启安[1] 吴伟坚[2] 

机构地区：[1]中国热带农业科学院环境与植物保护研究所,海南儋州571737 [2]华南农业大学昆虫生态研究室,广州510642

出　　处：《生态学杂志》2007年第9期1397-1401,共5页Chinese Journal of Ecology

基　　金：农业部农业结构调整重大技术研究专项资助项目(04-08-01A)

摘　　要：在5个温度(16℃、20℃、24℃、28℃和32℃)条件下,测定了拟小食螨瓢虫雌成虫对皮氏叶螨成螨的捕食功能反应。结果表明,在试验温度范围内,各温度下的功能反应均能用Holling圆盘方程(Ⅱ型)拟合,但各温度间功能反应的参数存在差异。以瞬时攻击率和捕食处理时间为评价指标,在16℃～28℃,拟小食螨瓢虫雌成虫对皮氏叶螨成螨的捕食效能随温度的上升而提高,28℃时达到最高,此时的瞬时攻击率和捕食处理时间分别为0.5899和0.0169d。温度上升至32℃时,捕食效能略为下降,此时的瞬时攻击率和捕食处理时间分别为0.5740和0.0184d,与28℃时的瞬时攻击率和捕食处理时间差异不显著。表明较高温度有利于拟小食螨瓢虫发挥对皮氏叶螨成螨的控制作用。在试验的密度和温度范围内,以三次多项方程描述了在不同猎物密度和温度组合下拟小食螨瓢虫雌成虫对皮氏叶螨成螨的捕食作用,以软件Surfer8.0生成了皮氏叶螨成螨密度和温度组合下的拟小食螨瓢虫雌成虫捕食量模拟值等值线图。同时,还对拟小食螨瓢虫在热带作物害虫生物防治中的应用潜力进行了讨论。The study on the predatory functional responses of Stethorus parapauperculus to Tetranychus piercei adults at 16 ℃, ：20 ℃, 24 ℃, 28 ℃ and 3：2 ℃ showed that within the range of test temperatures, the predatory functional responses of female S. parapauperculus adults could be simulated by Holling type Ⅱ , but the coefficients varied with temperature. Taking the successful attack rate and handling time as evaluation indicators, the predation efficiency of female S. parapauperculus adults on T. piercei adults within the range of 16 ℃-28 ℃ increased with in creasing temperature, and reached the maximum at 28 ℃. At 32 ℃, the predation efficiency decreased slightly. The successful attack rate and handling time at 32 ℃ were 0. 5740 and 0. 0184 day, respectively, which had no significant differences with those （0. 5899 and 0. 0169 day, respectively） at 28 ℃, indicating that higher temperature was favorable to the control effect of S.. parapauperculus on T. pierceii. A cubic polynomial equation was derived to describe the effects of temperature and prey density on the predation rate of female S. parapauperculus adults, and a contour plot of the estimated predation rate for any combinations of test temperature and prey density was produced by Surfer 8 software. The with S. parapauperculus against the pests on implication of these results for the biological control tropical crops was discussed.

关 键 词：拟小食螨瓢虫 皮氏叶螨 功能反应 温度 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治]