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VENTRAL NERVE CORD TRANSECTION IN CRAYFISH: A STUDY OF FUNCTIONAL ANATOMY

VENTRAL NERVE CORD TRANSECTION IN CRAYFISH: A STUDY OF FUNCTIONAL ANATOMY and Mechanisms underlying degeneration and regeneration of neural tissue following injury have been studied in many ways and in many species. Neural degeneration occurs one or two weeks after injury and the magnitude and rate of regeneration, when it occurs, depend on local and systemic factors, such as the dis- tance between the soma and the injury site, temperature, and the presence of glial tissue (Bittner, 1988; Blundon et al., 1990). In many invertebrates, such as the crayfish, neural degeneration and regeneration can oc- cur in one of two ways, depending on the in- jured fiber. Most fibers degenerate fast and sometimes regenerate; other fibers, such as the giant axons, degenerate very slowly, al- though the sequence of changes is similar (Wine, 1973; Blundon et al., 1990). However, there are only two reports where behavioral changes can be associated to the degenera- tion-regeneration process in crayfish (Lee and Wine, 1984; Lee et al.,1995). A detailed review of the literature on de- generation and regeneration following ventral nerve cord transection in crayfish reveals that there is little information about the associated behavioral changes. Several authors found no alteration in motor activity of the injured an- imals (Wine, 1973; Bittner, http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Crustacean Biology Brill

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References (22)

Publisher
Brill
Copyright
Copyright 1998 by Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0278-0372
eISSN
1937-240X
DOI
10.1163/193724098X00287
Publisher site
See Article on Publisher Site

Abstract

and Mechanisms underlying degeneration and regeneration of neural tissue following injury have been studied in many ways and in many species. Neural degeneration occurs one or two weeks after injury and the magnitude and rate of regeneration, when it occurs, depend on local and systemic factors, such as the dis- tance between the soma and the injury site, temperature, and the presence of glial tissue (Bittner, 1988; Blundon et al., 1990). In many invertebrates, such as the crayfish, neural degeneration and regeneration can oc- cur in one of two ways, depending on the in- jured fiber. Most fibers degenerate fast and sometimes regenerate; other fibers, such as the giant axons, degenerate very slowly, al- though the sequence of changes is similar (Wine, 1973; Blundon et al., 1990). However, there are only two reports where behavioral changes can be associated to the degenera- tion-regeneration process in crayfish (Lee and Wine, 1984; Lee et al.,1995). A detailed review of the literature on de- generation and regeneration following ventral nerve cord transection in crayfish reveals that there is little information about the associated behavioral changes. Several authors found no alteration in motor activity of the injured an- imals (Wine, 1973; Bittner,

Journal

Journal of Crustacean BiologyBrill

Published: Jan 1, 1998

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