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| 不同光谱对东亚小花蝽捕食西花蓟马的影响 |
| Effects of different light spectra on the predation of western flower thrips Frankliniella occidentalis by minute pirate bug Orius sauteri |
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| DOI： |
| 中文关键词: 光谱 东亚小花蝽 西花蓟马 捕食功能反应 搜寻效应 防治效果 |
| 英文关键词:Light spectra Orius sauteri Frankliniella occidentalis predatory functional response searching efficiency control efficiency |
| 基金项目:国家重点研发计划（2023YFD1400600）；北京市农林科学院创新能力建设项目（KJCX20230417，KJCX20230115） |
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| 中文摘要: |
| 设施补光可能会影响天敌昆虫的应用效率，为探索提升天敌应用效果的补光光谱，促进补光与天敌释放技术的有机结合，本研究在相同光强和光周期的条件下，比较了红（R）、蓝（B）、红蓝组合（RB）和白（W，对照）光处理下东亚小花蝽对西花蓟马捕食能力的差异。结果表明，相比于W光，B光显著降低东亚小花蝽雌成虫的存活率，R和RB光未影响其雌成虫的存活。R和RB光显著增加东亚小花蝽在高密度猎物下对西花蓟马的捕食量。不同光谱处理下东亚小花蝽雌成虫对西花蓟马雌成虫的捕食能力均符合Holling II型功能反应模型，且搜寻效应随猎物密度增加逐渐降低。RB光处理下，东亚小花蝽捕食西花蓟马的效果最好，理论日最大捕食量最高，为43.10头/d，单头猎物处理时间最短，为0.0232 d；B光的理论日最大捕食量也较高，为42.90头/d，单头猎物处理时间为0.0233 d；R光下东亚小花蝽捕食西花蓟马的瞬时攻击率最高为1.0837。东亚小花蝽对西花蓟马的搜寻效率最高的是RB光处理，其次是R或B光，最低的是W光。以上结果表明，相比于W光，R、B和RB光均增加东亚小花蝽对西花蓟马的捕食能力和搜寻效率，但B光会降低东亚小花蝽的存活率。因此，与设施补充R和RB光相结合，可潜在提升东亚小花蝽对西花蓟马的捕食效果。本文基于捕食功能差异评价了三种常用补光光谱对东亚小花蝽捕食西花蓟马的影响，为设施补光兼顾天敌应用提供了基础数据。 |
| 英文摘要: |
| Light supplementary in greenhouses may affect the application efficiency of natural enemies. In order to explore the spectrum of supplementary light on improving the application efficiency of natural enemies and promote the combination of light supplementary and natural enemy release technology, this study compared the differences in predatory ability of Orius sauteri to Frankliniella occidentalis under red (R), blue (B), red and blue combination (RB) and white (W, control) light treatment under the same light intensity and photoperiod. The results showed that compared with W light, B light significantly reduced the survival of female adult O. sauteri, but R and RB light had no effect on the survival of O. sauteri. R and RB light significantly increased the predatory amount of O. sauteri against F. occidentalis under high prey density. The predatory ability of female adult of O. sauteri to female adult of F. occidentalis under different light spectra fitted the Holling II functional response model, and the searching efficiency decreased with the increase of prey density. Under RB light, O. sauteri had the best predatory ability on F. occidentalis with the theoretical daily maximum prey consumption number of 43.10 individuals/d, and the shortest handling time of 0.0232 d. At the same time, the theoretical daily maximum prey consumed of B light was 42.90 individuals/d, and the handling time was 0.0233 d. The highest instantaneous attack rate of O. sauteri against F. occidentalis was from R light treatment, of 1.0837. In addition, the searching efficiency of O. sauteri on F. occidentalis was highest under RB light, followed by R or B light, and that was the lowest under W light. These results indicate that compared with W light, R, B and RB light can enhance the predatory functional response and searching efficiency of O. sauteri preying on F. occidentalis, but B light can reduce the survival rate of O. sauteri. Therefore, the combination of R or RB light could potentially improve the predation effect of O. sauteri on F. occidentalis. In this study, we evaluated the effects of three commonly used supplementary light spectra on the predation of O. sauteri on F. occidentalis based on predation differences, providing basic data for the application of supplementary light with natural enemies. |
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