| 南方小花蝽和黄蓟马的种群动态及捕食功能反应 |
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| 引用本文： | 孙英,胡昌雄,吴道慧,陈国华,殷红慧,徐天养,陈婷,张晓明.南方小花蝽和黄蓟马的种群动态及捕食功能反应[J].中国生物防治学报,2021,37(3):451-458. |
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| 作者姓名： | 孙英 胡昌雄 吴道慧 陈国华 殷红慧 徐天养 陈婷 张晓明 |
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| 作者单位： | 1. 云南农业大学植物保护学院/云南生物资源保护与利用国家重点实验室, 昆明 650201;2. 云南省烟草公司文山州公司, 文山 663000;3. 广东省农业科学院植物保护研究所/广东省植物保护新技术重点实验室, 广州 510640 |
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| 基金项目： | 云南省基础研究专项（202001AT070134）；云南省中青年学术技术带头人后备人才项目（202105AC160071）；云南省高层次人才培养支持计划青年拔尖人才项目（云人社通2020-150-09号）；中国烟草总公司云南省公司科技计划项目（2018530000241015） |
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| 摘 要： | 为明确南方小花蝽和黄蓟马在冬季蚕豆植株上的发生情况及南方小花蝽对黄蓟马的室内捕食控害能力，本试验采用五点取样盘拍法调查了蚕豆植株上黄蓟马及其天敌南方小花蝽的种群密度；在实验室内用捕食功能反应法研究了南方小花蝽雌成虫对黄蓟马成虫和2龄若虫的捕食功能、寻找效应及其自身密度对捕食黄蓟马的干扰反应。结果表明：黄蓟马在3月初达种群密度最大值18.2头/株，南方小花蝽种群高峰晚于黄蓟马19 d出现，在3月中旬达到最高峰3.4头/株；南方小花蝽对黄蓟马的捕食效应受自身密度和猎物密度影响，捕食效应符合HollingⅡ型圆盘方程功能反应模型，南方小花蝽对黄蓟马成虫和2龄若虫的捕食功能反应方程分别为Na=0.5655N/（1＋0.0193N）和Na=1.1864N/（1＋0.0346N）；日最大捕食量分别为29.3头/d和34.3头/d；当猎物密度不变时，南方小花蝽成虫对黄蓟马的捕食作用受到自身密度的干扰，平均捕食量随南方小花蝽密度升高而下降，其干扰反应方程为E=0.3009P-0.4290。南方小花蝽种群在野外蚕豆上种群对黄蓟马种群有跟随现象，其种群随着黄蓟马的增加而增长，在2―3月，蚕豆进入花期时黄蓟马种群数量达到最大值；南方小花蝽对黄蓟马有较强的捕食能力，可作为黄蓟马生物防治实践中重要的天敌资源加以研究和利用。
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| 关 键 词： | 黄蓟马 南方小花蝽 捕食功能 种群动态 生物防治 |
| 收稿时间： | 2020-07-20 |
Population Dynamics of Orius similis and Thrips flavus and Predatory Function Response |
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| SUN Ying,HU Changxiong,WU Daohui,CHEN Guohua,YIN Honghui,XU Tianyang,CHEN Ting,ZHANG Xiaoming.Population Dynamics of Orius similis and Thrips flavus and Predatory Function Response[J].Chinese Journal of Biological Control,2021,37(3):451-458. |
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| Authors: | SUN Ying HU Changxiong WU Daohui CHEN Guohua YIN Honghui XU Tianyang CHEN Ting ZHANG Xiaoming |
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| Affiliation: | 1. College of Plant Protection of Yunnan Agricultural University/State Key Laboratory of Yunnan Biological Resources Protection and Utilization, Kunming 650201, China;2. Wenshan Branch of Yunnan Tobacco Company, Wenshan 663000, China;3. Institute of Plant Protection, Guangdong Academy of Agricultural Sciences/Key Laboratory of New Technology of Plant Protection, Guangzhou 510640, China |
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| Abstract: | To clarify the occurrence of Orius similis and Thrips flavus on Vicia faba, and the predation ability of O. similisto thrips under indoor conditions. The population density of T. flavus and its natural enemy O. similis were investigated on V. faba plants by using five point sampling method in this experiment. Meanwhile, the predatory function and searching effect of female adults O. similis to T. flavus adults and 2nd instar nymphs were studied. The results showed that the population density of thrips peaked at 18.2 ind. per plant in early March, and the peak population densities of O. similis was occurred 19 days later than that of T. flavus, reached at peak densites of 3.4 ind. per plant in mid-March. The predation effect of O. similis to T. flavus was affected by both T. flavus and O. similis densities, which was in accordance with Holling II disk equation functional response model. The predatory function corresponding equations of O. similis on adults thrips and 2nd instar nymphs were Na=0.5655N/(1+0.0193N) and Na=1.1864N/(1+0.0346N), respectively; the maximum daily predation was 29.3 ind. per day and 34.3 ind. per day, respectively. The predation of adults O. similis to T. flavus was disturbed by O. similis density, and the average food intake decreased, and the interference response equation was E=0.3009P-0.4290when the prey density was fixed. The population of O. similis to T. flavus had the following phenomenon on V. faba in the field, and the population densities were increased with the increase of T. flavus. The population number of T. flavus reached the peak densities during the flowering stage on V. faba from February to March, meanwhile, the O. similis population has strong predatory ability to T. flavus, which could be used as an important natural enemy resource in T. flavus biological control practice. |
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| Keywords: | Thrips flavus Orius similis predatory functional population dynamics biological control |
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