Differing effects of cabbage and pepper on B and Q putative species of Bemisia tabaci

文献类型： 外文期刊

第一作者： Jiao, Xiaoguo

作者： Jiao, Xiaoguo;Xie, Wen;Guo, Litao;Liu, Baiming;Wang, Shaoli;Wu, Qingjun;Zhang, Youjun;Jiao, Xiaoguo

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期刊名称：JOURNAL OF PEST SCIENCE （ 影响因子：5.918； 五年影响因子：5.955 ）

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收录情况： SCI

摘要： B and Q putative species of Bemisia tabaci are two of the most invasive pests in the world. In China, Q is displacing B, but the underlying mechanism has been poorly explored. The difference in tolerance to host plants between B and Q may shed some light on the displacement. In the present study, two types of resistance (antixenosis or antibiosis) of cabbage and pepper against B and Q putative species were characterized based on demographic parameters (host selection, fecundity, etc.) and feeding behavior [ as determined by electrical penetration graph (EPG)]. Female longevity, fecundity, and nymph survival were substantially higher on cabbage than on pepper for B, but were similar on the two hosts for Q. B nymphs suffered high mortality on pepper, suggesting a high level of antibiosis against B in pepper. Both B and Q preferred to settle and oviposit on cabbage rather than on pepper, indicating a high level of antixenosis against B and Q in pepper. With regard to feeding behavior, EPG data indicated that both B and Q whiteflies fed more efficiently on cabbage than on pepper. Overall, both B and Q preferred cabbage to pepper, and both performed better on cabbage than on pepper, but the negative effects of pepper were greater on B than on Q. Our results demonstrate that Q is more tolerant of a low suitability host than B, which may partially explain why Q has displaced B in China

分类号： S4

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