Study on artificial breeding technology of Scapharca subcrenata in Bohai Bay
To improve artificial breeding technology of Scapharca subcrenata,an artificial breeding ex-periment of S.subcrenata was carried out on the coast of Wudi in Binzhou,and suitable technical method was found for the cultivation of parent shells,hatching,larval cultivation,and juvenile culti-vation in this area.After one month of cultivation,about 95％of the parent shells of Scapharca sub-crenata from the Binzhou sea area developed mature gonads and naturally laid eggs after being stimula-ted by air-dried and shady water.At a water temperature of 25.0～28.0 ℃,hatching rate of fertil-ized egg exceeded 90％,average shell length of the larvae was 320 μm after about 18 days,entering the metamorphosis attachment period.During the attachment stage,sea mud was used as the attach-ment base,which had a good attachment effect.The attachment deformation rate was above 50％,and the optimal survival salinity for juvenile was 20‰～35‰.A total of 5.98 X 107 juveniles were ob-tained in the seedling cultivation experiment.
万方数据
维普
