What is electric organ discharge?
Compared to incidental stray fields as measured close to any organism , an electric organ discharge (EOD) is characterized by a stronger amplitude, higher temporal and spatial stability, and a species-specific orientation that is adapted to its function.
What are the electric organ in fishes?
Electric organs are masses of flattened cells, called electrocytes, which are stacked in regular rows along the sides of certain fishes, e.g., the electric eel of South America. The posterior surface of each electrocyte is supplied with a motor neuron.
Which fish produces discharge?
Electric eels (Electrophorus electricus) are freshwater fish found in South America. They can discharge enough electricity to jolt a human being.
What is the sensory organ of electric fish?
1 Introduction. Weakly electric fish generate weak electric fields from modified muscle cells in the electric organ. They sense their own electric organ discharges (EODs) and those of other fish using specialized sensory receptors called electroreceptors.
Where did electric organs in fishes come from?
So-called neurogenic electric organs arise from specialized axons originating in the spinal cord, while myogenic electric organs arise from transformed skeletal muscle, typically in the trunk region of the fish.
How did electric organs work?
The electronic organ resembles a spinet, or upright, piano in size and general shape. Most instruments of this general type rely upon electronic oscillators (circuits carrying an alternating current at a specific frequency) to produce their sound.
How do electric organs work?
Where electric eels are found?
Electric eels are found in murky pools and calm stretches of the middle and lower Amazon and Orinoco river basins in South America. Juveniles feed on invertebrates, such as crabs and freshwater shrimp. As adults, they eat amphibians, fishes and crustaceans.
What is the function of electric organ?
Predator defense/stunning prey A few species of electric fish (i.e., strongly electric catfishes, Torpedo rays, and electric eels) produce extremely strong electric discharges (hundreds of volts) from their electric organs. Such strong discharges can repel predators and/or stun prey.
What is respiratory organ of fish?
The respiratory organ of fish is the gill. In addition to respiration, the gills also perform functions of acid-base regulation, osmoregulation, and excretion of nitrogenous compounds.
When was the electric organ invented?
The first successful electronic organ was developed in 1928 in France by Edouard Coupleux and Armand Givelet. It used electronic oscillators in place of the pipes of a conventional organ and was operated with keyboards and a pedal board.