Apparent Absence of Gap Junctions in Two Classes of Cnidaria

Study of the literature and new observations by electron microscopy suggest that gap junctions are absent in the anthozoa and scyphozoa, but present in the hydrozoa. While this may help to explain the marked electrophysiological differences known to exist between the hydrozoa and the other two group...

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Bibliographic Details
Published in:The Biological bulletin (Lancaster) 1984-08, Vol.167 (1), p.120-123
Main Authors: Mackie, G. O., Anderson, P. A. V., Singla, C. L.
Format: Article
Language:English
Subjects:
Anthozoa
Biological and medical sciences
Brackish
Cell membranes
cell morphology
Cnidaria. Ctenaria
Conduction
electron microscopy
Electrophysiology
Epithelium
Freshwater
Fundamental and applied biological sciences. Psychology
Gap junctions
Hydrozoa
Interstitial cells
Invertebrates
Invited Reviews
Jellyfishes
Marine
Molecules
Nerves
Neurons
Scyphozoa
ultrastructure
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Description
Summary:Study of the literature and new observations by electron microscopy suggest that gap junctions are absent in the anthozoa and scyphozoa, but present in the hydrozoa. While this may help to explain the marked electrophysiological differences known to exist between the hydrozoa and the other two groups, it raises questions about how intercellular metabolic communication is achieved in the groups lacking gap junctions.
ISSN:0006-3185
1939-8697
DOI:10.2307/1541341