高扬,李慧静,陆永跃,程代凤,2021,桔小实蝇雌成虫对寄主挥发物β-石竹烯的行为反应[J].环境昆虫学报,(1):253-259
桔小实蝇雌成虫对寄主挥发物β-石竹烯的行为反应
Behavioral response of Bactrocera dorsalis female adults to the host volatile, β-caryophyllene
  
DOI:
中文关键词:  桔小实蝇  β-石竹烯  产卵行为
英文关键词:Bactrocera dorsalis  β-caryophyllene  oviposition behavior
基金项目:国家自然科学基金青年基金(31601693);广东省现代农业产业共性关键技术研发创新团队建设项目(2020KJ134)
作者单位
高扬,李慧静,陆永跃,程代凤 华南农业大学农学院昆虫学系广州 510642 
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中文摘要:
      寄主植物挥发性化合物往往对昆虫产卵场所的选择具有重要的影响,为了明确桔小实蝇Bactrocera dorsalis众多寄主中是否存在特定的挥发物能够引诱桔小实蝇雌成虫产卵,本研究对桔小实蝇3种寄主(番石榴、橙子和芒果)果实的挥发物进行了鉴定,并测试了相关挥发物对桔小实蝇产卵行为的影响。研究结果表明3种寄主果实均能引诱桔小实蝇产卵并且β-石竹烯是3种寄主果实中共有的挥发物;Y型嗅觉仪和四臂嗅觉仪测试均表明低浓度β-石竹烯(9 μg/mL)对桔小实蝇雌成虫具有引诱作用,但高浓度β-石竹烯对桔小实蝇没有引诱作用;增加寄主番石榴果实中β-石竹烯的含量也会显著降低果实对雌虫产卵的诱集效果。本研究证实了特定浓度的β-石竹烯在桔小实蝇产卵行为中的作用,为开发桔小实蝇防治中的推拉策略提供了一种思路。
英文摘要:
      Host plant volatiles play important roles in the oviposition site selection of insects. In order to investigate whether there is a specific volatile produced by the hosts of Bactrocera dorsalis can attract the females of B. dorsalis to lay eggs, volatiles in guava, orange and mango fruits were identified. Behavior response of B. dorsalis females to the common volatile presented in the host fruits was tested. The results showed that all selected host fruits can attract B. dorsalis to lay eggs, and β-caryophyllene was the common volatile in the selected fruits. Y-shap and four-arm olfactometer test both showed that low concentration of β-caryophyllene (9 μg/mL) had an attractive effect on B. dorsalis females, but higher concentration β-caryophyllene had no attractive effect. Increasing the content of β-caryophyllene in guava can significantly reduce the attraction effect. This study confirmed the function of β-caryophyllene in the oviposition behavior of B. dorsalis, and the results provide a method for managing B. dorsalis by developing the push-pull strategy.
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