Effect of temperature on the discharge rates of the electric organ of some gymnotids.

Abstract 1. 1. The discharge rates of the electric organs of six species of Gymnotidae, living in the Rio Negro, were between 60 and 1600/sec at 28°C—which was the surface temperature of the river—and had Q10-values of around 1·5. 2. 2. The lower and upper tolerated temperatures were 19–25° and 30–37°C, respectively.