On leave from the Centre d'Etudes de Physiologie Nerveuse, C.N.R.S., 4, av. Gordon Bennett, Paris, 16e, France.
The origin of electric organs of Electrophorus electricus†
Article first published online: 23 FEB 2005
Copyright © 1966 Wiley-Liss, Inc.
The Anatomical Record
Volume 155, Issue 1, pages 103–110, May 1966
How to Cite
Szabo, T. (1966), The origin of electric organs of Electrophorus electricus. Anat. Rec., 155: 103–110. doi: 10.1002/ar.1091550112
Supported in part by grants to Drs. S. Hagiwara, L. Kruger and T. H. Bullock from the U. S. Air Force, National Institute of Health, Office of Naval Research and National Science Foundation.
- Issue published online: 23 FEB 2005
- Article first published online: 23 FEB 2005
The electric organs (main, Sachs' and Hunter's) of a 23 cm and a 38 cm long Electrophorus electricus were studied by histological methods. The results were compared with 12 cm (Keynes, '61) and 140 cm (Couceiro and Ackermann, '48) specimens. All three electric organs originate from striated muscle fiber as indicated by the presence of a striated structure in the undeveloped electroplates. The three organs do not develop simultaneously but in succession: first Sachs' organ, then the main organ and finally Hunter's organ, with considerable overlap in time. In all three cases, the anterior extremity of the organ develops last. The classical notion that the main organ originates from the lateralis imus muscle is not supported by the present findings.