Neural correlates of flight loss in a Mexican grasshopper, Barytettix psolus. II. DCMD and TCG interneurons.
Neural correlates of flight loss in a Mexican grasshopper, Barytettix psolus. II. DCMD and TCG interneurons.
复制标题
墨西哥蚱蜢 Barytettix psolus 飞行损失的神经相关性。
DOI：
10.1002/cne.902160404
复制
发表时间：
1983
期刊：
影响因子：
--
通讯作者：
Arbas,EA
中科院分区：
文献类型：
--
作者：
Arbas,EA
Comparison of the nervous systems of a flightless grasshopper(Barytettix psolus), and locusts(Schistocerca)is extended to include two large interneurons, the descending contralateral movement detector (DCMD) and the tritocerebral commissure giant (TCG). These interneurons are thought to play a role in locu st flight. Both were visualized inBarytettixwith cobalt staining techniques.Most features of the two neurons are similar in both locusts and Barytettix. Yet, several differences were noted. In locusts, the dorsal DCMD branch in its metathoracic projection terminates in dorsolateral neuropile and synapses with flight motorneurons (Pearson and Goodman, 1979). InBarytettix, no branch terminates in the corresponding region. Of the animals examined, 52% lacked branches corresponding to locust dorsal branches. When present, they all had abnormal projections by comparison to their counterparts in locusts.The maintenance of the TCG inBarytettixwith so similar a form to that of locusts suggests that the role of the cell in behavior other than flight should be examined. The differences in DCMD projection suggest that a discrete set of output connections may have been modified inBarytettixby the alteration of a single first‐order axonal branch.
