Summary
The fine structure of physiologically different electrocytes in seven genera of weakly electric teleosts is described. The major fine structural differences in these cells relate to specializations of the cell surface, distribution of mitochondria and variations in the filamentous inclusions. The degree of surface proliferation of the parallel faces of electrocytes produced by tubular invaginations of these faces is consistent with the physiological desirability for the electrocytes to match impedances across these faces during spike generation.
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References
Bennett, M. V. L. (1961) Modes of operation of electric organs.Annals of the New York Academy of Science 94, 458–509.
Bennett, M. V. L. (1971a) Electric organs.Fish Physiology 5, 347–491.
Bennett, M. V. L. (1971b) Electroreception.Fish Physiology 5, 493–574.
Bennett, M. V. L. andGrundfest, H. (1959) Electrophysiology of electric organ inGymnotus carapo.Journal of General Physiology 42, 1067–1104.
Bloom, F. andBarrnett, R. J. (1966) Fine structural localization of acetylcholinesterase in electroplaque of the electric eel.Journal of Cell Biology 29, 475–95.
Couceiro, A. andDe Almeida, D. F. (1961) The electrogenic tissue of some Gymnotidae. InBioelectrogenesis (edited byChagas, C. andA Paes De Carvalho, A. P.), pp. 3–12. Amsterdam: Elsevier.
Dahlgren, U. (1906) A new type of electric organ in an American teleost fish,Astroscopus (Brevoort).Science 23, 469–70.
Dahlgren, U. (1914) Origin of the electric tissues ofGymnarchus niloticus.Papers from the Tortugas Laboratory, Carnegie Institute of Washington 6, 159–203.
Engelmann, T. W. (1894) Die Blatterschnicht der elektrischen Organe vonRaja in ihren genetischen Beiziehungen zur quer-gestriften Muskelsubstanz.Archiv für die Gesummte Physiologie 57, 149–80.
Ewart, J. C. (1888) The electric organ of the skate. On the development of the electric organof Raja batis.Philosophical Transactions of the Royal Society of London, Series B 179, 399–416.
Ewart, J. C. (1892) Observations on the structure, relations, progressive development, and growth of the electric organ of the skate.Philosophical Transactions of the Royal Society of London, Series B 183, 389–420.
Greenwood, P. H., Rosen, D. E., Weitzman, S. H. andMeters, G. S. (1966) Phyletic Studies of teleostean fishes, with a provisional classification of living forms.Bulletin of the American Museum of Natural History, New York 131, 341–455.
Huxley, H. E. andHanson, J. (1954) Changes in the cross-striations of muscle during contraction and stretch and their structural interpretation.Nature 173, 973–6.
Kelly, D. E. (1968) Myofibrilogenesis and the differentiation of Z-bands in developing amphibian skeletal muscle.Anatomical Record 160, 374.
Keynes, R. D., Bennett, M. V. L. andGrundfest, H. (1961) Studies on the morphology and electro-physiology of electric organs. II. Electrophysiology of the electric organ ofMalapterurus electricus. InBioelectrogenesis (edited byChagas, C. andde Carvalho, A. P.), pp. 102–12. Amsterdam: Elsevier.
Lemanski, L. P. (1974) Studies on cardiac lethal mutant embryonic myocardial cells. Invited paper.Exerpta Medica in press.
Luft, J. H. (1956) The fine structure of the electric organ of the electric eel and torpedo ray.Journal of Biophysical and Biochemical Cytology 2, Supplement 229–32.
Luft, J. H. (1957) The histology and cytology of the electric organ of the electric eel. (Electrophorus electricus L.).Journal of Morphology 100, 113–39.
Luft, J. H. (1958) The fine structure of electric tissues.Experimental Cell Research Supplement 5, 168–82.
Mathewson, R., Mauro, A., Amatniek, E. andGrundfest, H. (1958) Morphology of main and accessory electric organs ofNarcine brasiliensis (Olfers) and some correlations with their electro-physiological properties.Biological Bulletin 115, 126–35.
Mathewson, R., Wachtel, A. andGrundfest, H. (1961) Fine structure of electroplaques. InBioelectrogenesis (edited byChagas, C. andde Carvalho, A. P.), pp. 25–53. Amsterdam: Elsevier.
Millonig, G. (1962) Further observations on a phosphate buffer for osmium solutions in fixation. InElectron Microscopy: Fifth International Congress on Electron Microscopy (held in Philadelphia,Pennsylvania, August 29–September 5, 1962) (edited byBreese, Jr. S. S.), p. 8. New York: Academic Press.
Ogneff, J. (1898) Einige Bermerkungen über den Bau des schwachen elektrischen Organes bei den Mormyriden.Zeitschrift für Wissenschaftliche Zoologie 64, 565–95.
Pearse, A. G. E. (1964)Histochemistry Theoretical and Applied, Third Edition, p. 780. Boston: Little, Brown and Company, p. 780.
Reynolds, E. S. (1963) The use of lead citrate at high pH as an electron opaque stain in electron microscopy.Journal of Cell Biology 17, 208–12.
Robertson, J. D. (1963) The occurrence of a subunit pattern in the unit membranes of club endings in Mauthner cell synapses in goldfish brains.Journal of Cell Biology 19, 201–21.
Schlichter, H. (1906) Über den feineren Bau de schwach elektrischen Organs vonMormyrus oxyrhynchus.Zeitschrift für Wissenschaftliche Zoologie 84, 479–525.
Schwartz, I. R. andPappas, G. D. (1968) The fine structure of electroplaques in some weakly electric fish.Anatomical Record 160, 424A.
Schwartz, I. R. (1968) The fine structure of electroplaques in eight species of weakly electric teleosts. Doctoral dissertation, Yale University.
Szabo, T. (1960) Development of the electric organ of Mormyridae.Nature (London) 188, 760–2.
Szabo, T. (1961) Les organes electriques deGymnotus carapo.Koninklijke Nederlandse Akademie van Wetenschappen, Proceedings, Series C 64, 584–6.
Wachtel, A. (1964) The ultrastructural relationships of electric organs and muscle. I. Filamentous systems.Journal of Morphology 114, 325–59.
Wachtel, A. (1968) private Communication.
Wachtel, A., Mathewson, R. andGrundfest, H. (1961) Electron microscopic and histochemical comparison of the two types of electroplaques ofNarcine brasiliensis.Journal of Biophysical and Biochemical Cytology 11, 663–75.
Waxman, S. G., Pappas, G. D. andBennett, M. V. L. (1972) Morphological correlates of functional differentiation of nodes of Ranvier along single fibers in the neurogenic electric organ of the knife fishSternarchus.Journal of Cell Biology 53, 210–24.
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Schwartz, I.R., Pappas, G.D. & Bennett, M.V.L. The fine structure of electrocytes in weakly electric teleosts. J Neurocytol 4, 87–114 (1975). https://doi.org/10.1007/BF01099098
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DOI: https://doi.org/10.1007/BF01099098