Comparative histology of the adult electric organ among four species of the genus Campylomormyrus (Teleostei: Mormyridae)

Paul C, Mamonekene V, Vater M, Feulner PGD, Engelmann J, Tiedemann R, Kirschbaum F (2015)
Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology 201(4): 357-374.

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The electric organ (EO) of weakly electric mormyrids consists of flat, disk-shaped electrocytes with distinct anterior and posterior faces. There are multiple species-characteristic patterns in the geometry of the electrocytes and their innervation. To further correlate electric organ discharge (EOD) with EO anatomy, we examined four species of the mormyrid genus Campylomormyrus possessing clearly distinct EODs. In C. compressirostris, C. numenius, and C. tshokwe, all of which display biphasic EODs, the posterior face of the electrocytes forms evaginations merging to a stalk system receiving the innervation. In C. tamandua that emits a triphasic EOD, the small stalks of the electrocyte penetrate the electrocyte anteriorly before merging on the anterior side to receive the innervation. Additional differences in electrocyte anatomy among the former three species with the same EO geometry could be associated with further characteristics of their EODs. Furthermore, in C. numenius, ontogenetic changes in EO anatomy correlate with profound changes in the EOD. In the juvenile the anterior face of the electrocyte is smooth, whereas in the adult it exhibits pronounced surface foldings. This anatomical difference, together with disparities in the degree of stalk furcation, probably contributes to the about 12 times longer EOD in the adult.
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Paul C, Mamonekene V, Vater M, et al. Comparative histology of the adult electric organ among four species of the genus Campylomormyrus (Teleostei: Mormyridae). Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology. 2015;201(4):357-374.
Paul, C., Mamonekene, V., Vater, M., Feulner, P. G. D., Engelmann, J., Tiedemann, R., & Kirschbaum, F. (2015). Comparative histology of the adult electric organ among four species of the genus Campylomormyrus (Teleostei: Mormyridae). Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology, 201(4), 357-374.
Paul, C., Mamonekene, V., Vater, M., Feulner, P. G. D., Engelmann, J., Tiedemann, R., and Kirschbaum, F. (2015). Comparative histology of the adult electric organ among four species of the genus Campylomormyrus (Teleostei: Mormyridae). Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology 201, 357-374.
Paul, C., et al., 2015. Comparative histology of the adult electric organ among four species of the genus Campylomormyrus (Teleostei: Mormyridae). Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology, 201(4), p 357-374.
C. Paul, et al., “Comparative histology of the adult electric organ among four species of the genus Campylomormyrus (Teleostei: Mormyridae)”, Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology, vol. 201, 2015, pp. 357-374.
Paul, C., Mamonekene, V., Vater, M., Feulner, P.G.D., Engelmann, J., Tiedemann, R., Kirschbaum, F.: Comparative histology of the adult electric organ among four species of the genus Campylomormyrus (Teleostei: Mormyridae). Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology. 201, 357-374 (2015).
Paul, Christiane, Mamonekene, Victor, Vater, Marianne, Feulner, Philine G D, Engelmann, Jacob, Tiedemann, Ralph, and Kirschbaum, Frank. “Comparative histology of the adult electric organ among four species of the genus Campylomormyrus (Teleostei: Mormyridae)”. Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology 201.4 (2015): 357-374.
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