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journal1 ›› 2017, Vol. 33 ›› Issue (5): 584-589.DOI: 10.16409/j.cnki.2095-039x.2017.05.002

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Olfaction Responses of Three Trichogramm Species to Sex Pheromone of Chilo suppressalis and Cnaphalocrocis medinalis

BAI Qi1,2, TIAN Junce1, LU Yanhui1, ZANG Liansheng3, LÜ Zhongxian1   

  1. 1. State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control/Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Science, Hangzhou 310021, China;
    2. College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China;
    3. Institute of Biological Control, Jilin Agricultural University, Changchun 130118, China
  • Received:2017-03-20 Online:2017-10-08 Published:2017-10-11

Abstract: Responses of three Trichogramma species, Trichogramma japonicun, T. chilonis and T. dendrolimi, in rice ecosystem to synthetic sex pheromone of two main Lepidoptera pests, stripped stem borer Chilo suppressalis (Walker)and rice leaf folder Cnaphalocrocis medinalis (Guenée)were determined using the Y-tube olfactometer. The concentrations of sex pheromone were 0.01, 0.1, 1, 10, 100 and 1000 μg. The results showed that the sex pheromone lure of C. suppressalis significantly attracted T. japonicun females, but not significantly attracted T. chilonis females and T. dendrolimi females. The sex pheromone lure of C. suppressalis significantly attracted T. japonicum females, T. chilonis females and T. dendrolimi females only under certain concentration. Those results indicate that the tested Trichogramma species can use host sex pheromone as a cue to search hosts, which may promote Trichogramma species' migration from non-rice habit to rice ecosystem and improve biological control of lepidopteran pests.

Key words: Chilo suppressalis, Cnaphalocrocis medinalis, synthetic sex pheromone, Trichogramm, olfaction response

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