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Chinese Journal of Biological Control ›› 2023, Vol. 39 ›› Issue (6): 1327-1333.DOI: 10.16409/j.cnki.2095-039x.2023.01.051

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Control Potential of Aphidoletes aphidimyza (Rondani) on Melanaphis sacchari (Zehntner)

REN Peng1, LI Zhimo2, SHEN Xiuxian1, WANG Xiong1, YU Xiaofei3, LIU Jianfeng1, HUANG Chunyang2, YAGN Maofa1,3   

  1. 1. Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region/Institute of Entomology, Guizhou University, Guiyang 550025, China;
    2. Zunyi Branch Company of Guizhou Tobacco, Zunyi 564200, China;
    3. College of Tobacco Science, Guizhou University, Guiyang 550025, China
  • Received:2022-10-28 Online:2023-12-08 Published:2023-12-20

Abstract: The pest control potential of Aphidoletes aphidimyza (Rondani) on Melanaphis sacchari (Zehntner) was investigated through laboratory assessment of the predation function of 3rd instars larvae of A. aphidimyza on 1st to 2nd instar of M. sacchari and outdoor cage release of A. aphidimyza pupae to control M. sacchari. The predatory responses of the 3rdinstar larvae of A. aphidimyza to 1st to 2nd instar of M. sacchari fitted well with the Holling II type, with a pest control efficiency a/Th of 0.6570 and a maximum daily predation of 32.79. The predation was affected by the intra-specific interference, with a coefficient (m) of 0.3007. The beneficial to pest ratio for the optimal control efficiency in cage release was 1:15, which achieved the best control of aphids on the 6th day after release of A. aphidimyza, although the control efficiencies with beneficial to pest ratios of 1:5, 1:10 and 1:15 were all over 70%. In conclusion, A. aphidimyza has a potential for the control of M. sacchari and can be included in the biological control program for M. sacchari in the future.

Key words: Aphidoletes aphidimyza, Melanaphis sacchari, predatory functional response, cage covering, biological control

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