Off-host aggregation behavior and sensory basis of arrestment by Cimex lectularius (Heteroptera: Cimicidae)
Off-host aggregation behavior and sensory basis of arrestment by Cimex lectularius (Heteroptera: Cimicidae)
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DOI：
10.1016/j.jinsphys.2009.03.001
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发表时间：
2009-06-01
影响因子：
2.2
通讯作者：
Kells, S. A.
中科院分区：
文献类型：
--
作者：
Olson, J. F.;Moon, R. D.;Kells, S. A.
臭虫，温带臭虫。聚集在先前被成虫染色的滤纸盘下。多项选择试验用于确定两种菌株、多个生命阶段和饥饿水平之间的聚集行为差异。有没有建立和最近衍生的菌株之间的聚集水平的差异，或成人和不同龄期的幼虫。自喂食以来，聚集的倾向随着时间的推移而下降，但对染色圆盘的偏好仍然很高。我们还研究了哪些感觉结构介导聚集，以及触角切除术是否会影响染色盘下的运动，方向和收缩。臭虫留下完整的，盲目的，或通过手术改变去除长鼻或触角的远端部分染色磁盘下表现出高水平的聚集。然而，与完整的臭虫相比，移除花梗显著减少了聚集。视频记录的运动和方向的错误与完整的，部分和完整的触角切除表明，无论是部分还是完整的触角切除影响行走速度，路径平直度，运动方向或频率的遭遇无论是染色或干净的磁盘。然而，完全去除两个触角显著降低了与染色盘相遇导致死亡的百分比。这些研究结果表明，臭虫的聚集是由花梗上的感器和染色盘之间的直接，近距离接触介导的聚集的结果。(C)2009爱思唯尔有限公司版权所有。
The bed bug, Cimex lectularius. aggregates under filter paper disks previously stained by adults. A multiple-choice assay was used to determine differences in aggregation behavior among two strains, multiple lifestages, and levels of starvation. There were no differences in level of aggregation between established and recently derived strains, or among adults and nymphs of different instars. Propensity to aggregate decreased with time since feeding, but preference for stained disks remained high. We also examined which sensory structures mediate aggregation, and whether antennectomy affected movement, orientation, and arrestment under stained disks. Bed bugs that were left intact, blinded, or surgically altered by the removal of probosci or the distal antennal segments exhibited high levels of aggregation under stained disks. However, the removal of the pedicel significantly reduced aggregation compared to intact bugs. Video recordings of movement and orientation by bugs with intact, partial and complete antennectomies demonstrated that neither partial nor complete antennectomies affected walking speed, path straightness, direction of movement or frequency of encounters with either stained or clean disks. However, complete removal of both antennae significantly reduced the percentage of encounters with stained disks that resulted in arrestment. These findings suggest aggregation by bed bugs is a result of arrestment mediated by direct, close-range contact between sensilla on the pedicel and stained disks. (C) 2009 Elsevier Ltd. All rights reserved.