Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 27 May 1983:
Vol. 220. no. 4600, pp. 971 - 974
DOI: 10.1126/science.6844924
Prev | Table of Contents | Next

Articles

Science, Vol 220, Issue 4600, 971-974
Copyright © 1983 by American Association for the Advancement of Science

articles

Hormonal control of sexual differentiation: changes in electric organ discharge waveform

AH Bass and CD Hopkins

Males and females of some mormyrid electric fishes generate electrical pulses that differ in waveform and duration. For one such species, testosterone or dihydrotestosterone induces females and immature males to produce the mature male electric organ discharge which is two times the duration of the female or immature discharge. Estradiol has only a weak effect. For a second species where males and females have similar electric organ discharges, testosterone produces no effect. The data suggest that androgens affect the electric organ itself.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Waveform diversity of electric organ discharges: the role of electric organ auto-excitability in Gymnotus spp..
A. Rodriguez-Cattaneo and A. A. Caputi (2009)
J. Exp. Biol. 212, 3478-3489
   Abstract »    Full Text »    PDF »
Time-domain signal divergence and discrimination without receptor modification in sympatric morphs of electric fishes.
M. E. Arnegard, B. S. Jackson, and C. D. Hopkins (2006)
J. Exp. Biol. 209, 2182-2198
   Abstract »    Full Text »    PDF »
Generating Sexually Differentiated Vocal Patterns: Laryngeal Nerve and EMG Recordings from Vocalizing Male and Female African Clawed Frogs (Xenopus laevis).
A. Yamaguchi and D. B. Kelley (2000)
J. Neurosci. 20, 1559-1567
   Abstract »    Full Text »    PDF »
Molecular systematics of the african electric fishes (Mormyroidea: teleostei) and a model for the evolution of their electric organs.
J. Sullivan, S Lavoue, and C. Hopkins (2000)
J. Exp. Biol. 203, 665-683
   Abstract »    PDF »
Design features for electric communication.
C. Hopkins (1999)
J. Exp. Biol. 202, 1217-1228
   Abstract »    PDF »
The electric organ discharge of pulse gymnotiforms: the transformation of a simple impulse into a complex spatio-temporal electromotor pattern.
A. Caputi (1999)
J. Exp. Biol. 202, 1229-1241
   Abstract »    PDF »
Plasticity of the electric organ discharge: implications for the regulation of ionic currents.
H Zakon, L Mcanelly, G. Smith, K Dunlap, G Lopreato, J Oestreich, and W. Few (1999)
J. Exp. Biol. 202, 1409-1416
   Abstract »    PDF »
Communication signals and sound production mechanisms of mormyrid electric fish.
J. Crawford and X Huang (1999)
J. Exp. Biol. 202, 1417-1426
   Abstract »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)