Continuous nondestructive monitoring of larval feeding activity and development of the bamboo powderpost beetle Dinoderus minutus using acoustic emission
Continuous nondestructive monitoring of larval feeding activity and development of the bamboo powderpost beetle Dinoderus minutus using acoustic emission
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利用声发射连续无损监测竹粉甲虫 Dinoderus minutus 幼虫的摄食活动和发育
DOI：
10.1007/s10086-017-1678-4
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发表时间：
2018
影响因子：
2.9
通讯作者：
Fujii Yoshihisa
中科院分区：
文献类型：
--
作者：
Watanabe Hiroki;Yanase Yoshiyuki;Fujii Yoshihisa
由于竹粉虫的产卵、发育和取食都发生在竹秆内，因此对竹粉虫的生活史和取食生物学研究还很有限。在这项研究中，声发射（AE）监测应用于连续的非破坏性分析幼虫的摄食活动和发展，从第一个年龄到成人羽化。将初孵幼虫单独接种于竹秆上。声发射命中记录使用单一的声发射传感器固定到竹片。AE命中的产生表明接种后幼虫开始摄食活动。根据每小时AE命中率的时间过程，幼虫在每个龄期都在不断地进食，只有在蜕皮和化蛹期间才停止进食活动。一半的人检查经历了七个龄期，另一半经历了八个龄期。每5分钟AE命中率的时间过程呈现出周期性的循环，其中连续进餐被约10分钟的非活动阶段分隔。各龄期的平均优势期为0.76 ~ 2.19h。在对声发射数据进行距离衰减校正后，声发射振幅随幼虫蜕皮发育而增大的趋势更加明显。成虫羽化后继续进行AE监测，新羽化成虫的摄食活动在Reifungsfrass期间几乎持续不断。
The life history and feeding biology of the bamboo powderpost beetleDinoderus minutusremain poorly understood because the beetles’ oviposition, development, and feeding take place inside bamboo culms. In this study, acoustic emission (AE) monitoring was applied for continuous nondestructive analysis of larval feeding activity and development from the first instar to adult eclosion. Newly hatched larvae were inoculated individually into pieces of madake (Phyllostachys bambusoides) culms. AE hits were recorded using single AE sensors fixed onto the bamboo pieces. Generation of AE hits indicated that larval feeding activity had begun after inoculation. Based on the time course of the hourly AE hit rate, the larvae were feeding constantly during each instar, and feeding activity only ceased during periods of ecdysis and pupation. Half of the individuals examined underwent seven instars and the other half underwent eight instars. The time course of AE hit rate per 5 min exhibited periodic cycles, where continuous meals were separated by inactive phases of ca. 5 min, with an average dominant period of each instar ranging between 0.76 and 2.19 h. After correcting the AE data based on distance attenuation of AE waves, the tendency that AE amplitude increased as the larvae developed through ecdysis events became more apparent. AE monitoring continued after adult eclosion, and the feeding activity of the newly emerged adults continued almost ceaselessly during the Reifungsfrass period.
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