Li Ya-Ying, Liu Ming-Xiu, Zhou Hai-Wei, Tian Chuan-Bei, Zhang Guo-Hao, Liu Yi-Qing, Liu Huai, Wang Jin-Jun
Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400716, China (
Collaborative Innovation Center of Special Plant Industry, Chongqing University of Arts and Sciences, Chongqing 402160, China (
J Econ Entomol. 2017 Jun 1;110(3):903-914. doi: 10.1093/jee/tox056.
Eotetranychus kankitus Ehara (Acari: Tetranychidae) is an important pest in Chinese citrus orchards. In the present study, we aimed to evaluate the potential of Neoseiulus barkeri (Hughes) (Acari: Phytoseiidae) for the biological control of E. kankitus. A two-sex life table of E. kankitus and N. barkeri was constructed to estimate development and fecundity. The functional response and stage-specific predation rate were analyzed to evaluate predation capacity. In addition, a timing model was used to project populations of E. kankitus with release of N. barkeri. Results showed that N. barkeri was able to develop and reproduce when fed on E. kankitus. The functional responses of N. barkeri on different stages of E. kankitus all fit the Holling II disc equation. When mixed stages of E. kankitus coexisted, N. barkeri mainly consumed larvae and nymphs. Based on the life tables and stage-specific predation rates, population projection revealed the stage structure and growth rate of N. barkeri on E. kankitus. Although E. kankitus had the higher growth rate, it was maintained at a low population level for several weeks after release of N. barkeri. The results highlighted the potential for utilizing N. barkeri as a biological control agent of E. kankitus.
柑橘全爪螨（Eotetranychus kankitus Ehara，蜱螨亚纲：叶螨科）是中国柑橘园中的一种重要害虫。在本研究中，我们旨在评估巴氏新小绥螨（Neoseiulus barkeri，Hughes，蜱螨亚纲：植绥螨科）对柑橘全爪螨进行生物防治的潜力。构建了柑橘全爪螨和巴氏新小绥螨的两性生命表，以估计其发育和繁殖力。分析了功能反应和特定阶段捕食率，以评估捕食能力。此外，使用了一个时间模型来预测释放巴氏新小绥螨后柑橘全爪螨的种群数量。结果表明，巴氏新小绥螨取食柑橘全爪螨时能够发育和繁殖。巴氏新小绥螨对柑橘全爪螨不同阶段的功能反应均符合Holling II圆盘方程。当柑橘全爪螨的不同阶段共存时，巴氏新小绥螨主要取食幼虫和若虫。基于生命表和特定阶段捕食率，种群预测揭示了巴氏新小绥螨在柑橘全爪螨上的阶段结构和增长率。虽然柑橘全爪螨具有较高的增长率，但在释放巴氏新小绥螨后的几周内，其种群数量维持在较低水平。这些结果突出了利用巴氏新小绥螨作为柑橘全爪螨生物防治剂的潜力。
