转换寄主前后扶桑绵粉蚧取食行为的EPG分析  

EPG analysis of feeding behavior of the solenopsis mealybug,Phenacoccus solenopsis(Hemiptera: Pseudococcidae) before and after host shift

作　　者：黄芳[1] 王飞飞[1,2] 张治军[1] 郦卫弟[1] 吕要斌[1,2] 

机构地区：[1]浙江省农业科学院植物保护与微生物研究所、浙江省植物有害生物防控重点实验室--省部共建国家重点实验室培育基地,杭州310021 [2]杭州师范大学环境与生命科学学院,杭州311121

出　　处：《昆虫学报》2014年第4期503-508,共6页Acta Entomologica Sinica

基　　金：浙江省自然科学基金项目(LQ14C140002);农业部公益性行业专项(201103026);国家自然科学基金项目(31270580);国家“十二五”支撑计划课题(2012BAD19B06)

摘　　要：【目的】分析扶桑绵粉蚧Phenacoccus solenopsis在发生寄主转移前后的取食行为,以据此评价其寄主适应性。【方法】利用刺吸电位(EPG)技术,量化扶桑绵粉蚧转换寄主植物前后的取食行为并进行对比分析。【结果】寄主转换后,扶桑绵粉蚧的取食行为受到显著的影响,需要耗费更多的时间到达韧皮部,总取食时间显著变短,取食效率降低。但寄主转换后,下一代成虫的取食效率提高,总刺探数、取食刺探数、总刺探时间以及到达韧皮部的效率与时间均与寄主转换前的扶桑绵粉蚧个体不存在显著差异。【结论】扶桑绵粉蚧的取食行为存在高度可塑性,这种特性利于扩大其寄主植物范围,有可能是促其成为重要农业入侵生物的原因之一。[ Aim ] To study the feeding behavior of Phenacoccus solenopsis during host shift for evaluating its host adaptability. [ Methods] Feeding behavior of the solenopsis mealybug was quantitatively analyzed by electronic penetration graph （EPG） technique to evaluate its resource utilization efficiency when transferred to a novel host. [ Results ] During host shift, feeding behavior were significantly affected, including more time needed to reach phloem, less total feeding time, and lower ingestion efficiency. The next generation adults on the transferred host, however, showed increased ingestion efficiency, together with similar feeding behavior as their mothers before host shift, including the total number and time of probes, time of feeding and the efficiency to reach phloem. [ Conclusion ] High plasticity of feeding behavior is advantageous for P. solenopsis to adapt the transferred host and should be beneficial to expand its host range, which is supposed to be one reason that P. solenopsis would be an important agricultural invasive pest.

关 键 词：扶桑绵粉蚧 取食行为 刺探电位图谱 入侵性 寄主转移 寄主适应性 

分 类 号：Q968[生物学—昆虫学]