Okada J, Toh Y
Department of Biology, Graduate School of Sciences, Kyushu University, Fukuoka, Japan.
J Comp Physiol A. 2000 Sep;186(9):849-57. doi: 10.1007/s003590000137.
The searching behavior of blinded cockroaches was examined under unrestrained conditions, in an arena, and on a treadmill. When cockroaches searching in a circular arena touched a stationary object (metal pole) with their antennae, they frequently approached the object more closely, and then climbed up it. Similar orientation behavior was observed in tethered animals in open loop conditions, walking on a Styrofoam ball. In these restrained cockroaches, a single antenna sufficed to distinguish the angular positions of an object, in the horizontal plane (0 degrees, 45 degrees, and 90 degrees). A group of mechanosensitive hairs on the basal segment of the antenna (scapal hair plate) appears to play a major role in antennal object detection in the horizontal plane, as gauged by shaving off these scapal hair plates. In unrestrained cockroaches, shaving the scapal hair plate increased the time needed to approach an object. Under tethered conditions, the ability to turn towards and to establish antennal contact with a test object was significantly impaired.
在无限制条件下、在竞技场中以及在跑步机上，对蒙眼蟑螂的搜索行为进行了研究。当在圆形竞技场中搜索的蟑螂用触角碰到静止物体（金属杆）时，它们经常会更靠近该物体，然后爬上它。在开环条件下，拴系着的蟑螂在聚苯乙烯泡沫塑料球上行走时，也观察到了类似的定向行为。在这些受到限制的蟑螂中，单根触角就足以区分物体在水平面（0度、45度和90度）的角位置。通过剃掉触角基部节段上的一组机械敏感毛（肩胛毛板）发现，该毛板似乎在水平面的触角物体检测中起主要作用。在未受限制的蟑螂中，剃掉肩胛毛板会增加接近物体所需的时间。在拴系条件下，转向测试物体并与测试物体建立触角接触的能力会显著受损。
