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An electric fish generates an electric field using an electric organ, modified from muscles in its tail. The field is called weak if it is only enough to detect prey, and strong if it is powerful enough to stun or kill. The field may be in brief pulses, as in the elephantfishes, or a continuous wave, as in the knifefishes.
Electric organ discharges are two types, pulse and wave, and vary both by species and by function. Electric fish have evolved many specialised behaviours. The predatory African sharptooth catfish eavesdrops on its weakly electric mormyrid prey to locate it when hunting, driving the prey fish to develop electric signals that are harder to detect.
They detect small differences in electric potential between their two ends. Ampullae of Lorenzini ( sg. : ampulla ) are electroreceptors , sense organs able to detect electric fields. They form a network of mucus -filled pores in the skin of cartilaginous fish ( sharks , rays , and chimaeras ) and of basal bony fishes such as reedfish , [ 1 ...
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This category includes animals with the biological ability to perceive natural electrical stimuli. Subcategories This category has only the following subcategory.
Electroreception is the ability to detect electric fields or currents. Some fish, such as catfish and sharks, have organs that detect weak electric potentials on the order of millivolts. [ 24 ] Other fish, like the South American electric fishes Gymnotiformes , can produce weak electric currents, which they use in navigation and social ...
The tagging technology used in the study could help us understand why some animals travel thousands of miles each year, like those who migrate between Europe and Africa, as well as work out how ...
In biology, the electric organ is an organ that an electric fish uses to create an electric field. Electric organs are derived from modified muscle or in some cases nerve tissue , called electrocytes, and have evolved at least six times among the elasmobranchs and teleosts .