On the fine structure of the electrocyte of Electrophorus electricus L. |
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| Authors: | Doctor Raul Dodsworth Machado Wanderley de Souza Gerson Cotta-Pereira Gustavo de Oliveira Castro |
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| Affiliation: | (1) Institute de Biofisica da UFRJ, Centro de Ciências da Saúde, Cidade Universitária, Rio de Janeiro, R.J., Brasil;(2) Unit of Electron Microscopy, Instituto de Biofisica, Universidade Federal do Rio de Janeiro, Ilha do Fundão, Rio de Janeiro, Brasil |
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| Abstract: | Summary The general ultrastructure of the electrocyte, the basic unit of the electric organs of Electrophorus electricus, is analyzed. Presented herein are detailed observations of the syncytial surface, its fibrillar coat, invaginations of the plasma membrane and synaptic terminals. Using Thiéry's method glycogen granules were identified in the syncytial cytoplasm and inside the synaptic terminals, their size and structure being compatible with the muscular origin of the electric organs, to which the filamentous meshwork found in the cytoplasm may be related. Among the perinuclear-organelles, are dense bodies with crystalline patterns. The mitochondrial matrix contains dense granules, their size and structure varying according to the organ to which they belong and to the fixation method used.This work has been supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Conselho de Ensino para Graduados da UFRJ and Banco Nacional de Desenvolvimento Econômico, FUNTEC-241 |
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| Keywords: | Electrocyte ultrastructure Electric eel Electrophorus electricus Mitochondrial granules Glycogen cytochemistry |
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