Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (26): 43-47.doi: 10.11924/j.issn.1000-6850.casb16010145

Special Issue: 烟草种植与生产

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Predation Selectivity of Harpactor fuscipes for Important Pests in Tobacco

Su Xiangning1, Deng Haibin2, Cai Qingnian3, Zhang Maoxin1   

  1. (1Research Laboratory of Insect, South China Agricultural University, Guangzhou 510642;2Nanxiong Tobacco Research Institute of Guangdong Province, Nanxiong Guangdong 512400;3College of Plant Protection, China Agricultural University, Beijing 100193)
  • Received:2016-01-29 Revised:2016-02-22 Accepted:2016-02-25 Online:2016-09-21 Published:2016-09-21

Abstract: To provide a scientific basis for more reasonable and effective application of Harpctor fuscipes to prevent and control of tobacco important pests, the behavior response of an assassin bug, Harpctor fuscipes to Myzus persicae, Heliothis assulta and Spodoptera litura, was examined using the Y-tube olfactometer. The results showed that Harpactor fuscipes adult was strongly attracted by M. persicae larva, the 3rd-instar larvae of H. assulta and S. litura, the percentages of the bug adult that selecting the three species were up to 34.44%, 40.00% and 51.11%, respectively, and were all significantly higher than that of the control groups. When selecting M. persicae larva, the 3rd-instar larvae of H. assulta and S. litura, Harpactor fuscipes adult took 14.53, 13.44 and 9.38 min, respectively, and the time that Harpactor fuscipes spent on the 3rd-instar larvae of S. litura was significantly shorter than that of the other two species. Moreover, among the three prey species, Harpactor fuscipes preferred to select the 3rd-instar larvae of S. litura. The result would provide an important reference for artificial breeding and wide application of H. fuscipes on controlling the important pests and thus guarantee the safety production of agricultural products.