Microstructural growth in otoliths of the Russian sturgeon, Acipenser gueldenstaedtii

摘要

Otolith microstructure of the Russian sturgeon Acipenser gueldenstaedtii was examined in samples from adult fish collected in the Caspian Sea. The microstructure of the otolith was principally the same among specimens. The anterior side of the sagitta grew in two directions, elongating both the long and short arms. The long arm sections exhibited 14-21 distinct translucent and opaque zones.