Characterization of obstacle negotiation behaviors in the cockroach, Blaberus discoidalis
Characterization of obstacle negotiation behaviors in the cockroach, Blaberus discoidalis
复制标题
DOI：
10.1242/jeb.028381
复制
发表时间：
2009-05-15
影响因子：
2.8
通讯作者：
Ritzmann, R. E.
中科院分区：
文献类型：
--
作者：
Harley, C. M.;English, B. A.;Ritzmann, R. E.
在自然环境中，动物必须能够对各种障碍物做出反应，这些反应需要感官信息来促进适当和有效的运动行为。本研究的目的是表征传感器参与复杂的控制障碍谈判行为的蟑螂Blaberus discoidalis。以往的研究表明，触角参与障碍物检测和谈判行为。在攀爬过程中，蟑螂摆动前腿，然后要么成功地到达块的顶部，要么错过。这些攀登尝试的成功与否取决于他们与障碍物的距离。触角缩短的蟑螂在攀爬前比对照更接近障碍物，这表明距离与触角长度有关。移除触角鞭毛导致障碍物检测延迟，并且攀爬策略从有针对性的肢体运动改变为不太定向的尝试。一个更复杂的场景--一个蟑螂可以爬上或钻下的架子--允许我们进一步研究感官参与路径选择的作用。最后，触角接触架子的顶部导致攀爬，而接触下面导致隧道，然而，在光明中，蟑螂偏向于隧道;在黑暗中没有这种偏见。视觉结构的选择性覆盖表明，这一背景是由单眼。
Within natural environments, animals must be able to respond to a wide range of obstacles in their path. Such responses require sensory information to facilitate appropriate and effective motor behaviors. The objective of this study was to characterize sensors involved in the complex control of obstacle negotiation behaviors in the cockroach Blaberus discoidalis. Previous studies suggest that antennae are involved in obstacle detection and negotiation behaviors. During climbing attempts, cockroaches swing their front leg that then either successfully reaches the top of the block or misses. The success of these climbing attempts was dependent on their distance from the obstacle. Cockroaches with shortened antennae were closer to the obstacle prior to climbing than controls, suggesting that distance was related to antennal length. Removing the antennal flagellum resulted in delays in obstacle detection and changes in climbing strategy from targeted limb movements to less directed attempts. A more complex scenario - a shelf that the cockroach could either climb over or tunnel under - allowed us to further examine the role of sensory involvement in path selection. Ultimately, antennae contacting the top of the shelf led to climbing whereas contact on the underside led to tunneling However, in the light, cockroaches were biased toward tunnelling; a bias which was absent in the dark. Selective covering of visual structures suggested that this context was determined by the ocelli.