文献类型： 外文期刊

作者： Li, Maohai ² ; Yang, Nianwan ³ ; Wan, Fanghao ³ ; Liu, Liling ⁴ ; Chen, Yan ⁵ ; Li, Jianping ² ; Fu, Junfan ¹ ;

作者机构： 1.Shenyang Agr Univ, Coll Plant Protect, Shenyang 110866, Peoples R China

2.Jilin Acad Agr Sci, Inst Plant Protect, Gongzhuling, Peoples R China

3.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing, Peoples R China

4.Jilin Entry Exit Inspect & Quarantine Bur, Inspect & Quarantine Technol Ctr, Changchun, Peoples R China

5.Shenyang Acad Agr Sci, Inst Plant Protect, Shenyang, Peoples R China

关键词： Neoseiulus cucumeris;Bemisia tabaci;functional response;tomato

期刊名称：BIOCONTROL SCIENCE AND TECHNOLOGY （ 影响因子：1.665； 五年影响因子：1.616 ）

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收录情况： SCI

摘要： Bemisia tabaci (Gennadius) is an important invasive pest of vegetables and other horticultural plants worldwide. In this study, the functional response of Neoseiulus cucumeris (Oudemans) to different stages of immature B. tabaci was evaluated under laboratory conditions. Predation experiments were conducted on tomato leaf discs (2.5cm diameter) over a 24-h period at 26 +/- 1 degrees C and 65 +/- 5% relative humidity with a L16:D8 photoperiod. The prey densities ranged from 5 to 90 immature stages (eggs and first- to fourth-instar nymphs) of B. tabaci per leaf disc. The results showed that the egg stage of B. tabaci was the most susceptible prey stage and that the mated female adult mite (3-day-old) was a more effective predator than the male adult mite. The functional response of adult N. cucumeris followed a Type II trend curve as shown in a logistic regression model. Adult N. cucumeris exhibited different predation tendencies towards prey in different stages of immaturity. The daily maximum number of eggs, first-, second- and third-instar nymphs of B. tabaci killed by a single female over a 24-h period (26 +/- 1 degrees C, 65 +/- 5% RH and L16:D8 photoperiod) were 8.5, 5.2, 3.0 and 2.1, respectively, whereas the number killed by a single male was 6.0, 4.0, 2.3 and 1.8, respectively. The results of this study could help determine an effective B. tabaci biocontrol measure that employs a natural predator.