Sensitivity to electricity in the catfish, Parasilurus asotus.
The Japanese catfish (Parasilurus asotus) responded in its respiratory reflex to weak electric field not less sensitively than Gymnarchus niloticus. A sensitivity peak was found at about 1-30 Hz. The threshold voltage gradient of the electroreceptive system was determined to be about 0.05 microV/cm. High sensitivity to electric field fluctuating in low frequency being common to Siluriformes, the role of the sensory systems may be common beyond the difference of habitats among species.
D000818:Animals; D002397:Catfishes / Q000502:physiology*; D004558:Electric Stimulation; D004594:Electrophysiology; D012119:Respiration