VISUAL COURSE CONTROL OF ESCAPE RESPONSES IN THE COCKROACH BLABERUS-CRANIIFER - ROLE OF INTERNAL AND EXTERNAL ORIENTATION INFORMATION
VISUAL COURSE CONTROL OF ESCAPE RESPONSES IN THE COCKROACH BLABERUS-CRANIIFER - ROLE OF INTERNAL AND EXTERNAL ORIENTATION INFORMATION
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DOI：
10.1111/j.1365-3032.1983.tb00341.x
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发表时间：
1983-01-01
影响因子：
1.5
通讯作者：
SURBER, JL
中科院分区：
文献类型：
--
作者：
BELL, WJ;TOBIN, TR;SURBER, JL
B.craniifer若虫在伺服球装置上行走时暴露在点光源下。最初的反应是短暂的停下来，然后以超过黑暗中的速度奔跑。他们的航向远离光源，方向变得接近180度。当光源接近水平方向时，远离光线。路线的直线度由内部和外部方向信息控制。如果光源位于头顶，则路径比定向光更加迂回。从黑暗到光明的时间转换后，突然急转 > 90 度。将动物带回黑暗区域。停止发生在光刺激开始或抵消后立即发生，但停止的持续时间似乎与自上次停止以来的时间无关，也与停止前的跑步长度无关。对突然出现的光刺激的反应似乎代表了蟑螂在光相期间受到干扰时重新定位黑暗区域和躲避捕食者的适应。
Nymphs of B. craniifer were exposed to a point source of light while walking on a servosphere apparatus. The initial response was a brief stop followed by running at a rate exceeding that in darkness. Their course was away from the light source and their direction became closer to 180.degree. away from the light, as the light source approached the horizontal. The straightness of the course was controlled by both internal and external orientation information. If the source was overhead, the course was more circuitous than with the directional light. Following a temporal switch from darkness to light, abrupt sharp turns of > 90.degree. led the animals back into a zone of darkness. Stopping occurs immediately after the onset or offset of the light stimulus, but the duration of stops does not seem to be correlated with the time since a previous stop, nor with the length of the run prior to a stop. Responses to a a sudden onset of a light stimulus seem to represent adaptations for relocating a zone of darkness and for predator avoidance when a cockroach is disturbed during its photophase.