蛭弧菌对九孔鲍生长及养殖体系细菌群落的影响

Effects of Bdellovibrio-and-like organism on growth of Haliotis diversicolor aquatilis and bacterial community in rearing system

研究了蛭弧菌BDH12（登录号为EF094471）对九孔鲍（Haliotis diversicolor aquatilis）生长、肠道和养殖水体总菌、弧菌以及水体细菌群落数的影响.结果显示,蛭弧菌组九孔鲍的存活率、壳长和体重分别比对照组增加了111％、1.8％和7.0％;蛭弧菌组的九孔鲍肠道总菌和弧菌分别比对照组降低8.6％～21.0％和12.2％～27.7％,养殖水体总菌和弧菌分别比对照组降低2.1％～16.7％和8.0％～34.8％;养殖水体的PCR-DGGE图谱显示,对照组和蛭弧菌组养殖水体的细菌丰度值分别在0.54～0.97和0.50～0.75之间.结果表明,蛭弧菌BDH12可以作为一种生物控制因子用于九孔鲍的健康养殖.

In this study, BdeUovibrio-and-like organism strain BDH12 （GenBank accession No. EF094471） was applied in a 63-day rearing of Haliotis diversicolor aquatilis, and its effects on abalone growth, the total number of bacterial and Vibrio both in rearing water and abalone intestine and community structure of rearing water were investigated. The results showed that the survival rate, abalone length and weight of BDH12 added groups significantly increased by 111%, 1.8% and 7.0%, respectively, compared with the control. The total number of bacterial and Vibrio of BDH12 added tanks in abalone intestine significantly reduced by 8.6%-21.0% and 12.2%-27.7%, and in water they reduced by 2.1%- 16.7% and 8.0%-34.8%, respectively, compared with the control. PCR-DGGE profiles revealed that the richness value of bacterial communities of the control and the test groups were 0.54-0.97 and 0.50-0.75. The results indicate that BDH12 can be used as a bio-control/probiotic agent in H. diversicolor aquatilis culture.