Difference in feeding behaviors of two invasive whiteflies on host plants with different suitability: Implication for competitive displacement
文献类型: 外文期刊
第一作者: Liu, Baiming
作者: Liu, Baiming;Pan, Huipeng;Jiao, Xiaoguo;Xie, Wen;Wu, Qingjun;Wang, Shaoli;Xu, Baoyun;Zhang, Youjun;Liu, Baiming;Yan, Fengming;Chu, Dong;Zhou, Xuguo
作者机构:
关键词: Bemisia tabaci;Competitive displacemen;DC-EPG;Feeding behavior;Host suitability
期刊名称:INTERNATIONAL JOURNAL OF BIOLOGICAL SCIENCES ( 影响因子:6.58; 五年影响因子:6.478 )
ISSN:
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收录情况: SCI
摘要: In China, Bemisia tabaci Q (commonly known as biotype Q) has rapidly displaced B (commonly known as biotype B) in the past 6 years. The mechanisms underlying such phenomenon have been studied extensively in recent years; however, we have not come to a definitive con-clusion yet. In the present study, the differences in host suitability between B and Q whitefly adults to five host plants (cabbage, cotton, cucumber, poinsettia, and tomato) were evaluated based on their respective feeding behaviors using a direct-current electrical penetration graph (DC-EPG) system. Pair-wise comparisons of B. tabaci B and Q feeding on each of the five host plants clearly indicate that Q feeds better than B on tomato, cotton and poinsettia, while B feeds better than Q on cabbage and cucumber. The EPG parameters related to both phloem and non-phloem phases confirm that cabbage and cucumber are best suited to B, while to-mato, cotton, and poinsettia are best suited to Q. Our present results support the contention that host suitability and adult feeding behavior contribute to the competitive displacement of biotype B by biotype Q. The discrepancy between field (previous studies) and laboratory results (this study), however, suggests that 1) whitefly displacement is apparently contributed by multiple factors; and 2) factor(s) other than the host plant suitability may play a vital role in dictating the whitefly biotypes in the field.
分类号: Q
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