On the basis of the further researches,Bdellovibrio sp.Bdh5221 can live on the host bacteria from 106 cfu/ml to 109 cfu/ml,and the Bdellovibrio growth would be better in the higher amount host.

• 蛭弧菌Bdh5221在宿主菌浓度106~109cfu/ml下均可正常生长,高浓度宿主菌更有利于蛭弧菌生长;