Ampullae of Lorenzini
Sensory organs in some fish that detect electrical fields / From Wikipedia, the free encyclopedia
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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] sturgeon,[2] and lungfish.[1] They are associated with and evolved from the mechanosensory lateral line organs of early vertebrates. Most bony fishes and terrestrial vertebrates have lost their ampullae of Lorenzini.