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Scientia Silvae Sinicae ›› 2014, Vol. 50 ›› Issue (8): 97-101.doi: 10.11707/j.1001-7488.20140814

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Biological Control of Agrilus mali (Coleoptera:Buprestidae) by Applying Four Species of Bethylid Wasp(Hymenoptera:Bethylidae) on Malus sieversii in Xinjiang

Wang Zhiyong1, Yang Zhongqi1, Zhang Yanlong1, Wang Xiaoyi1, Tang Yanlong1, Sun Qingjiang2, Xu Zheng2   

  1. 1. Key Laboratory of Forest Protection of State Forestry Administration Research Institute of Forest Ecology, Environment and Protection, CAF Beijing 100091;
    2. Yili Forestry Bureau Yili 835000
  • Received:2013-03-10 Revised:2013-04-10 Online:2014-08-25 Published:2014-07-31
  • Contact: 杨忠岐

Abstract:

To explore the biological control measure of Agrilus mali Matsumura, four species of bethylid wasp in the genus Sclerodermus (S. pupariae, S. guani and another two species) were used to test their control capacity to pest by bagging with 5 release ratio (parasitoid:host: 0.5:1, 1:1, 2:1, 4:1, 8:1). Results showed that, all four wasps were able to successfully parasitize on A. mali, especialy for S. pupariae, which caused 65.56% reducing rate with release ratio 8:1 in 30 d. Then S. pupariae was tested by directly releasing on the damaged apple trees with the 5 release ratios. After 30, 45 and 60 d, the control effects were checked respectively. The result showed that, the treatment with 8:1 release ratio, after 60 d performed the best, with 50.97% corrected mortality. This research provided a successful case by using bethylid wasps to control A. mali, and offered a reference for appropriate release ratio of S. pupariae in the field.

Key words: Agrilus mali, Sclerodermus spp., biological control, parasitism effectiveness

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