Otolith (IMAGE)

NOAA Fisheries West Coast Region

Otolith

Caption

Cross-section of an otolith, an ear bone about the size of a grain of rice, from one of the deformed splittail. Daily growth rings resemble tree rings. The chemistry of the otoliths reveal selenium exposure from the fish's development in an egg to when they fed as juveniles in the San Joaquin River. The center of the otolith is formed during early development influenced by maternal yolk.

Credit

George Whitman, UC Davis

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CREDIT: George Whitman, UC Davis

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