An Analysis Of The Feeding B.ehavior Of Three Stages O f Toxoptera Citricida By Dc Electrical Penetration Graph Waveforms
文献类型: 外文期刊
作者: Li, Taisheng;Lu, Zhuoyue;Wang, Xuefeng;Zhao, Runa;Zhou, Changyong;Chen, Wenlong;He, Yingqin
作者机构:
关键词: electropenetrography; brown citrus aphid; adult; nymphs; stylet penetration; Hemiptera; Aphididae; virus transmission; Citrus unshiu; Rutaceae; EPG
期刊名称: ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA
ISSN: 0013-8703
年卷期: 2019 年 167 卷 4 期
页码:
摘要: With the purpose of studying the feeding behavior of the brown citrus aphid pest, Toxoptera citricida (Kirkaldy) (Hemiptera: Aphididae), we compared stylet probing behaviors of third and fourth instars and adults on Citrus unshiu Marc (Rutaceae) seedlings using the electrical penetration graph (EPG) technique. EPG waveforms exhibited the full suite of stylet behaviors - stylet pathway, intracellular stylet puncture, phloem salivation (E1), sieve ingestion (E2), and xylem sap ingestion activities, plus the non-penetration (Np) waveform. Before the phloem phase, the number of probes was significantly higher for third-instar nymphs than for adults. Overall duration of Np events by adults was significantly lower than the duration of third and fourth instars. The number of short probes of the fourth instars was significantly higher than that of the adults. In the phloem phase, adults made more frequent and longer E1 events than the third and fourth instars. Third instars made more frequent but shorter E2 events, whereas adults made fewer but longer events. These results showed adults gained nutrients by increasing feeding time during phloem ingestion. Thus, the probability of phloem-associated virus acquisition and transmission of T. citricida was higher in adults than in nymphs.
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