Differing effects of cabbage and pepper on B and Q putative species of Bemisia tabaci
Differing effects of cabbage and pepper on B and Q putative species of Bemisia tabaci
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卷心菜和辣椒对烟粉虱 B 和 Q 推定种的不同影响
DOI：
10.1007/s10340-014-0594-2
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发表时间：
2014-12-01
影响因子：
4.8
通讯作者：
Zhang, Youjun
中科院分区：
文献类型：
--
作者：
Jiao, Xiaoguo;Xie, Wen;Zhang, Youjun
烟粉虱B种和Q种是世界上入侵最严重的两种害虫。在《中国》中，Q取代了B，但其背后的机制一直没有得到很好的探索。B和Q对寄主植物的耐受性差异可能为这种移位提供一些线索。在本研究中，根据人口统计参数(寄主选择、繁殖力等)，研究了甘蓝和辣椒对B和Q两种假定物种的两种抗性(抗异种或抗菌)。和进食行为[由电穿透图(EPG)确定]。甘蓝上的雌虫寿命、繁殖力和若虫存活率均显著高于辣椒上，但在两种寄主上的差异不大。辣椒上的若虫死亡率较高，表明辣椒对B有较高的抗菌能力。B和Q都喜欢在卷心菜上定居和产卵，而不是在辣椒上，表明辣椒对B和Q有较高的抗异源作用。在取食行为方面，EPG数据表明，B和Q粉虱在卷心菜上的取食效率都高于在辣椒上的取食效率。总体而言，B和Q对甘蓝的喜好程度均高于辣椒，且在甘蓝上的表现均好于辣椒，但辣椒对B的负面影响大于对Q的负面影响。我们的结果表明，Q比B更能耐受低适宜性寄主，这可能是Q取代中国中B的部分原因。
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.