Growth of the juvenile green snail, Turbo marmoratus in Tokunoshima Island, Kagoshima prefecture [Japan]

Juvenile green snails were reared at a mariculture institution for 17 to 29 months and released (shell height: 15.1 - 45.2mm) on a reef crest and reef slope in two areas of Kagoshima Prefecture (Boma, Tokunoshima and Sohbaru, Isen). The shell growth of recaptured snails was observed. Juveniles grew more than 40mm in shell height in a single year without any distinct variation between the two areas. This suggests that 30mm juveniles would mature in two years.