Study on the technique of artificial reproduction and nursing of Barbatia virescens

Abstract:

The primary observation on propagation and study on artificial reproduction of Barbatia virescens were performed from 2009 to 2010，which revealed the processes of propagation and embryonic development. The feasible environmental conditions for hatching, larval growth and settlement of young shellfish were selected via experiments. The natural breeding season of Barbatia virescens in the south of Zhejiang Province is from June to July，when water temperature is 24-28 ℃. The ranges of suitable temperature and salinity in hatching were 24-28 ℃ and 22-26 respectively, and the initial Dstage veliger appeared about 18 h after fertilization. In Dstage larvae，the feasible temperature range was 24-28 ℃，feasible salinity was 26 in larval growth, and the dainty food was Isochrysis galbana. After about 10-12 days rearing, the larvae develop to the stage of metamorphosis. The hard cement brick with rough surface was suitable for attaching and growth.