Application of electroreception in fish emphasizing on sturgeon

Document Type : Tarvij

Authors

1 Fisheries Department, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, Guilan, Iran

2 International Sturgeon Research Institute, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Rasht, Iran

Abstract

The electroreception system has been studied in many fish species. The electric fields could be generated by stimulating the electric organs. In weakly electric fishes, objects could be recognized by electric organs as a result of distribution in the magnetic field. In sturgeons, the electric field is dipolar, including negative at the head and positive at the tail, which leads to tracking the prey from schools according to the directions of their head-tail dipoles. The sturgeon species have many electric receptors called ampullae of Lorenzini in their rostrum. The electroreception system contributes to the nutrition, migration, mating, and sex determination of the sturgeon fish. This review concentrates on the electric organ structure, the mechanisms, the application of electrosensory in sex determination as a new non-invasive, and the substantial roles in sturgeon feeding as an invaluable species in the aquaculture industry.

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