2015年10月28日星期三
Electrical eels deliver more electrical shocks by curling up
Electrical eels' ability of stunning preys then locating them through the similar power was found by Kenneth Catania, Stevenson Professor of Biological Sciences from Vanderbilt University. He has spent three years studying on this fish lived in South America and come to the conclusion.
Almost two thirds of the eel's body is filled with specialized cells which is called electrocytes. They can store electricity acting as batteries. The cells discharge simultaneously which is at least 600 volts when an eel is around its prey.
Catania found that the eels have a special skill to double the electrical shock that they can deliver to particularly large or difficult prey. The findings are reported in the journal Current Biology on Oct. 29. The eel had a second attack when it realized there is bigger fish and it is more difficult to beat the prey. Under these circumstances, the eel first bits the prey and curls its tail around the body of the prey until the tail lies directly across the body from the eel's head. Then the electrical pulses are greatly increased.
The weapon used by electrical eels, that is the high-voltage system, is much complex than we thought.
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