Based on genetic comparisons, de Santana and colleagues determined that two groups of electric eels began to evolve in South America about 7.1 million years ago.
How did electric eel evolve?
ELECTRIC EELS AND THEIR SUPERCHARGED MUSCLES
Between 100 and 200 million years ago, some fish began to amplify that potential. They evolved electrocytes from muscle cells, which were organised in sequence and capable of generating much higher voltages than those used to make muscles work.
When was the first electric eel discovered?
In 1839, Michael Faraday extensively tested the electrical properties of an electric eel imported from Suriname. For a span of four months, he carefully and humanely measured the electrical impulses produced by the animal by pressing shaped copper paddles and saddles against the specimen.
How did electric animals evolve?
Scientists have found how the electric fish’s jolt evolved. Biologists identified the regulatory molecules involved in the genetic and developmental pathways that electric fish have used to convert a simple muscle into an organ capable of generating a potent electrical field.
What were electric eels discovered?
Deep in the Brazilian Amazon River basin, scientists led by the Smithsonian’s National Museum of Natural History fish research associate C. David de Santana discovered a small, river-fed lake filled with more than 100 adult electric eels, many of which were upwards of 4 feet long.
Do electric eels produce AC or DC?
How do electric eels release their shock? Electric fish can either emit an electric organ discharge (EOD), in pulses, or in a wave-like (sinusoidal) manner. Furthermore, they can either produce DC, direct current (monophasic) or AC, alternating current (biphasic).
What were electric eels called before electricity was discovered?
The electric catfish (family Malapteruridae) lives in the Nile River. Its earliest depiction is an Ancient Egyptian slab from 3100 BCE (way before electricity was discovered), and it’s called angry catfish. 12th century Arab scientists referred to it with words like trembler or shaker (synonymous with thunder).