西花蓟马和花蓟马聚集信息素田间引诱试验及其在种间互作中的作用

doi:10.16380/j.kcxb.2017.12.011

›› 2017, Vol. 60 ›› Issue (12): 1447-1456.doi: 10.16380/j.kcxb.2017.12.011

西花蓟马和花蓟马聚集信息素田间引诱试验及其在种间互作中的作用

耿双双^1,2，#, 李晓维^2，#, 章金明², 张治军², 吕要斌^1,2,*

（1.浙江师范大学化学与生命科学学院, 浙江金华 321004; 2. 浙江省农业科学院植物保护与微生物研究所, 浙江省植物有害生物防控重点实验室——省部共建国家重点实验室培育基地, 杭州 310021）

出版日期:2017-12-20 发布日期:2017-12-20

Field testing of aggregation pheromones of Frankliniella occidentalis and F. intonsa (Thysanoptera: Thripidae) and their roles in interspecific interaction

GENG Shuang-Shuang^1,2,#, LI Xiao-Wei^2,#, ZHANG Jin-Ming², ZHANG Zhi-Jun², LU Yao-Bin^1,2,*

(1. College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China; 2. State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China)

Online:2017-12-20 Published:2017-12-20

摘要/Abstract

摘要： 【目的】西花蓟马Frankliniella occidentalis和花蓟马F. intonsa雄成虫均可以释放聚集信息素，且对雌雄虫均具有吸引作用。两种蓟马聚集信息素的主要成分相同，为(R)-lavandulyl acetate和neryl (S)-2-methylbutanoate，但两种主要成分的比例差异很大。本研究旨在明确这两种蓟马聚集信息素组分的田间最佳引诱剂量和比例及其在两种蓟马种间互作中的作用。【方法】通过田间色板引诱试验，分别测定了上述两种蓟马聚集信息素组分对两种蓟马雌虫的田间最佳引诱剂量和比例；通过养虫笼选择性试验分析了这两种聚集信息素最佳配比在两种蓟马种间互作中的作用。【结果】田间色板引诱试验结果显示，当neryl (S)-2-methylbutanoate的剂量为10 000 ng, (R)-lavandulyl acetate和neryl (S)-2-methylbutanoate的比例为1∶8时，对西花蓟马成虫的引诱效果最佳；当neryl (S)-2-methylbutanoate的剂量为5 000 ng, (R)-lavandulyl acetate和neryl (S)-2-methylbutanoate的比例为1∶4时，对花蓟马成虫的引诱效果最佳。选择性试验结果表明，分别针对西花蓟马和花蓟马的聚集信息素组分最佳配比对同种具有吸引作用，对异种不具有吸引作用，说明这两个近缘种的聚集信息素具有种间特异性。【结论】两种蓟马通过聚集信息素组分比例调节的种间特异性可能是两种蓟马种群分化的重要机制；聚集信息素种间特异性是降低两种蓟马种间竞争的重要因素。本研究为深入理解两种蓟马信息素特异性的生理和分子机制提供理论指导,同时对利用聚集信息素进行蓟马种群监测和害虫防控具有指导意义。

关键词: 西花蓟马, 花蓟马, 聚集信息素, 剂量, 配比, 种间互作

Abstract: 【Aim】 Male adults of both Frankliniella occidentalis and F. intonsa can release aggregation pheromones, which have two major compounds (R)-lavandulyl acetate and neryl (S)-2-methylbutanoate but in different ratios, and attract both female and male adults. Given the overlap in pheromone components and similar niches between the two species, we hypothesize that aggregation pheromones might play a role in interspecific interactions between the two species.【Methods】 The optimal blends of the two major components for trapping F. occidentalis and F. intonsa female adults in fields were determined by field trapping experiments. In addition, cage experiments were conducted to determine the role of aggregation pheromones in the interspecific interaction between the two closely related thrips species. 【Results】 The results showed that the optimal blend for trapping F. occidentalis adults was 1 250 ng (R)-lavandulyl acetate and 10 000 ng neryl (S)-2-methylbutanoate, while that for trapping F. intonsa adults was 1 250 ng (R)-lavandulyl acetate and 5 000 ng neryl (S)-2-methylbutanoate. In addition, the synthetic aggregation pheromone blend of F. occidentalis determined above had no significant trapping effects on F. intonsa adults and vice versa, suggesting that the aggregation pheromones of the two closely related species are species specific. 【Conclusion】 This study confirmed that species-specificity in aggregation pheromones in the two closely related thrips species is regulated by the ratio of the two major compounds. Meanwhile, the species-specificity might contribute to the pre-mating isolation and reduction of competition between F. occidentalis and F. intonsa. These results provide a theoretical guidance for further understanding the physiological and molecular mechanisms of chemical divergence in the two thrips species, and also a guide for population monitoring and pest control of thrips using aggregation pheromones.

Key words: Frankliniella occidentalis, Frankliniella intonsa, aggregation pheromone, dose, ratio, interspecific interaction

耿双双, 李晓维, 章金明, 张治军, 吕要斌. 西花蓟马和花蓟马聚集信息素田间引诱试验及其在种间互作中的作用[J]. , 2017, 60(12): 1447-1456.

GENG Shuang-Shuang, LI Xiao-Wei, ZHANG Jin-Ming, ZHANG Zhi-Jun, 吕Yao-Bin . Field testing of aggregation pheromones of Frankliniella occidentalis and F. intonsa (Thysanoptera: Thripidae) and their roles in interspecific interaction[J]. , 2017, 60(12): 1447-1456.

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http://www.insect.org.cn/CN/Y2017/V60/I12/1447

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西花蓟马和花蓟马聚集信息素田间引诱试验及其在种间互作中的作用

Field testing of aggregation pheromones of Frankliniella occidentalis and F. intonsa (Thysanoptera: Thripidae) and their roles in interspecific interaction

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