Also: ampullae of Lorenzini, electric sense, shark jelly, skates
Sharks, skates and rays sense the faint electric fields of prey with jelly-filled pores called ampullae of Lorenzini, first described in 1678.
Only what the cited papers report.
Values as stated in the cited paper's abstract.
| Property | Value | Source |
|---|---|---|
| Proton conductivity of ampullae of Lorenzini jelly | 2 ± 1 mS/cm | Josberger 2016 |
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Bellono and colleagues found that two ion channels, CaV1.3 and BK, work together in little skate electrosensory cells, with special adaptations that let them detect very weak electrical signals.
As reported in: Bellono, Leitch, Julius (2017). Molecular basis of ancestral vertebrate electroreception. Nature. doi:10.1038/nature21401
Josberger and colleagues measured the jelly from skate and shark ampullae of Lorenzini at about 2 mS/cm proton conductivity, the highest reported for a biological material and only 40 times lower than the synthetic polymer Nafion.
As reported in: Josberger, Hassanzadeh, Deng et al. (2016). Proton conductivity in ampullae of Lorenzini jelly. Science Advances. doi:10.1126/sciadv.1600112