Article Summary: The Electric Sense of Sharks and Rays

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Fish Biology Article Summary
Electro-sensitivity in marine species is one of the areas that researchers have explored minimally. Fish is one species that exhibits electric fields to detect its prey. The research in this article explores how the shark can use electromagnetic fields created through the slightest water currents. The sharks use this sensitivity to detect their prey or any aspect of danger in their way. Electroreceptors may be located in a range of marine species. It is thought to be an antique type of sensory connected to and maybe descended from the dorsal side sensation. The sharks use developed electroreceptors. The shark is well-known for its scientific name Scyliorhinus Canicula. When detecting its prey, it has as low as 0.01 microvolts per centimetre threshold (Kalmijn 374). Pneumatic, radiation, biochemical, and temperatures have little effect on electroreceptors. Electroreception is related to particular actions like prey identification and protection from predators. Electroreception is also employed for interactive detection and object and communication interaction among the sharks because of their dedicated electrified organs.
The history of electrosensitivity in fish dates to 1935, when Digkgraf observed the Syliorhinus canula’s sensitivity to steel wire. Further experiments revealed that the shark was sensitive to weak electric currents, which means it can detect even the lowest electric currents. The question herein is how sharks use passive electrolocation in capturing their prey. Passive electrolocation is the process through which the Syliorhinus Canicula detect electrical fields in water using their electroreceptive organs to catch their prey. Primarily, Syliorhinus Canicula usually spontaneously explore their aquatic surrounding in search of food when they are hungry.
Experimentation
The author outlines eight experiments which included the introduction of a living prey whereby they were conducted in an agar chamber. The prey was the flatfish as the plaice. The flatfish went direct to the sand at the bottom of the pool. In some of the experiments, the shark avoided or demonstrated inadequate response when they came across the place. The fish slowly responded to the plaice without food because they were well fed.
Step by Step Ager Screened experiment
In the agar chamber screened experiment, which sought to explain feeding behaviour of the sharks;
* Certain marine animals have thresholds as low as 0.01 micr...