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journal1 ›› 2019, Vol. 35 ›› Issue (3): 350-355.DOI: 10.16409/j.cnki.2095-039x.2019.03.003

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Functional Response of Macrocentrus cingulum to Ostrinia furnacalis Larvae

LI Hongmeng1,2, LIU Kaiqiang2, HE Kanglai2, WANG Zhenying2   

  1. 1. Engineering Research Center of Natural Enemy Insects/Institute of Biological Control, Jilin Agricultural University, Changchun 130118, China;
    2. State Key Laboratory of Biology of Plant Diseases and Insect Pests/Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Received:2018-12-05 Online:2019-06-08 Published:2019-06-17

Abstract: In order to evaluate the control potential of Macrocentrus cingulum to Ostrinia furnacalis, functional responses of M. cingulum to the larva of O. furnacalis at 20, 24, 28, 32℃ and the self-interference effect of M. cingulum at 20, 24, 28℃ were examined under laboratory conditions (RH 60%-80%, 16L:8D).The results showed that, between 20-32℃, the functional responses fitted well with the Holling type Ⅱ model. At a certain temperature, the number of parasitized larvae responded positively to host density and reached a peak when the host density increased to a certain amount. The parasitism efficiency was the largest at 24℃ and the lowest at 20℃. Therefore, 24℃ is the suitable temperature for M. cingulum. The searching efficiency of M. cingulum decreased with the increase of O. furnacalis and M. cingulum densities. According to the Hassell model, both the searching coefficient Q and the disturbance coefficient m maximized at 28℃and minimized 20℃, indicating that the interference in M. cingulum might reduce its parasitism efficiency.

Key words: Macrocentrus cingulum, Ostrinia furnacalis, functional response, density effect, temperature

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