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| 不同龄期的大草蛉对桃蚜的捕食作用 |
| Predation ability of Chrysopa pallens (Rambur) on Myzus persicae |
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| DOI： |
| 中文关键词: 大草蛉 桃蚜 功能反应 种内干扰 |
| 英文关键词:Chrysopa pallens (Rambur) Myzus persicae functional response intraspecific interference |
| 基金项目:四川省科技计划重点研发项目（2019YFN0180） |
| Author Name | Affiliation | | CHEN Bin, ZHANG Wei, LIU Xing-Wang, HUANG Ying, WANG Ling, LI Guo-Hui, PENG Xiu-Li | 1. Agricultural Technology Extension Station of Gaoxian County, Yibin 645150, Sichuan Province, China
2. Faculty of Agriculture, Forestry and Food Engineering, Yibin University, Yibin 644000, China
3. Plant Protection and Plant Quarantine Station of Mianyang, Mianyang 621000, Sichuan Province, China
4. Agriculture and Rural Bureau of Lizhou District, Guangyuan 628017, Sichuan Province, China
5. Plant Protection and Plant Quarantine Station of Beichuan, Mianyang 622750, Sichuan Province, China
6. Agriculture and Rural Bureau of Jiajiang, Leshan 614100, Sichuan Province, China |
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| 中文摘要: |
| 大草蛉Chrysopa pallens（Rambur）是我国分布较广、捕食能力较强的天敌昆虫。为明确大草蛉对桃蚜Myzus percicae潜在的控制能力，在室内研究了大草蛉不同龄期幼虫和成虫对桃蚜的捕食作用，以及种内干扰对大草蛉捕食的影响。结果表明：25℃恒温条件下，大草蛉成虫和幼虫对桃蚜的捕食功能反应可拟合Holling Ⅱ圆盘方程，在24 h内大草蛉成虫、1龄幼虫、2龄幼虫和3龄幼虫对桃蚜理论最大捕食量分别为370.4头、21.5头、112.4头和217.4头。大草蛉成虫和幼虫对桃蚜的捕食量均随着猎物密度的增加而增加，当桃蚜数量增加到150头后，大草蛉成虫和幼虫捕食量的增加速度明显减缓。成虫及幼虫对桃蚜的搜寻效应随着猎物密度的增加而降低，内干扰作用随着大草蛉虫龄的增加而增强。试验结果表明大草蛉对桃蚜具有较强的控害能力，对研究桃蚜生物防治技术有重要参考价值。 |
| 英文摘要: |
| Chrysopa pallens (Rambur) is a natural enemy with wide distribution and strong predation ability in China. In order to determine the potential control ability of C. pallens on Myzus persicae, the predatory capacity of C. pallens on M. persicae, and the effects of intraspecific interference on predation of C. pallens, were studied in laboratory. The results showed that the functional response of C. pallens on M. persicae was belonged to Holling Ⅱ. Within 24 hours, the theoretical maximum predation of adults, 1st instar, 2nd instar and 3rd instar larvae to M. persicae was 370.4, 21.5, 112.4 and 217.4, respectively. The predation of adults and larvae to M. persicae increased with the increase of prey density, and the predation of adults and larvae slowed down obviously when the number of M. persicae increased to 150. The searching effect of adults and larvae on M. persicae decreased with the increase of prey density, and the internal interference increased with the increase of the age of lacewings. The results showed that C. pallens had a strong ability to control M. persicae and had important reference value for biological control of M. persicae. |
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