Affiliation:
1. Department of Zoology, Faculty of Life Sciences, Tel Aviv University,Tel Aviv 69978, Israel
Abstract
SUMMARYThe frontal ganglion (FG) is part of the insect stomatogastric nervous system and is found in most insect orders. Previous work has shown that in the desert locust, Schistocerca gregaria, the FG constitutes a major source of innervation to the foregut. In an in vitro preparation,isolated from all descending and sensory inputs, the FG spontaneously generated rhythmic multi-unit bursts of action potentials that could be recorded from all its efferent nerves. The consistent endogenous FG rhythmic pattern indicates the presence of a central pattern generator network. We found the appearance of in vitro rhythmic activity to be strongly correlated with the physiological state of the donor locust. A robust pattern emerged only after a period of saline superfusion, if the locust had a very full foregut and crop, or if the animal was close to ecdysis. Accordingly,haemolymph collected at these stages inhibited an ongoing rhythmic pattern when applied onto the ganglion. We present this novel central pattern generating system as a basis for future work on the neural network characterisation and its role in generating and controlling behaviour.
Publisher
The Company of Biologists
Subject
Insect Science,Molecular Biology,Animal Science and Zoology,Aquatic Science,Physiology,Ecology, Evolution, Behavior and Systematics
Reference44 articles.
1. Abrams, T. W. and Pearson, K. G. (1982). Effects of temperature on identified central neurons that control jumping in the grasshopper. J. Neurosci.2,1538-1553.
2. Allum, R. C. (1973). Surgical interference with the anterior stomatogastric nervous system and its effects upon growth and moulting in Locusta migratoria migratorioidesR. and F. PhD Thesis, The University of Nottingham, UK.
3. Aubele, E. and Klemm, N. (1977). Origin,destination and mapping of tritocerebral neurons of locust. Cell Tiss. Res.178,199-219.
4. Ayali, A. and Harris-Warrick, R. M. (1999). Monoamine control of the pacemaker kernel and cycle frequency in the lobster pyloric network. J. Neurosci.19,6712-6722.
5. Bignell, D. E. (1973). The effect of removal of the frontal ganglion on growth and protein synthesis in young adults of Locusta migratoria.Can. J. Zool.52,203-208.
Cited by
36 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献