一株海洋蛭弧菌类生物对海水细菌的生物控制和水质的影响  

Biocontrol of Bacteria in Seawater by a Marine Bdellovibrio-and-Like Organisms and its Effect on Water Quality

作　　者：温崇庆[1] 丁贤[2] 薛明[1] 纪建达[1] 周世宁[3] 

机构地区：[1]广东海洋大学水产学院,广东湛江524025 [2]中国水产科学院南海水产研究所//农业部渔业生态环境重点开放实验室,广东广州510300 [3]中山大学生命科学学院//有害生物控制与资源利用国家重点实验室,广东广州510275

出　　处：《中山大学学报（自然科学版）》2008年第3期85-88,共4页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家高技术发展计划(863计划)资助项目(2003AA624010);农业部渔业生态环境重点开放实验室开放基金资助项目;广东省渔业生态环境重点实验室开放基金资助项目(2006-8)

摘　　要：研究了一株海洋蛭弧菌类生物(Bdellovibrio-and-like organisms,BALOs)DA5与溶藻弧菌(Vibrio alginolyticus)在海水中共培养时的相互作用;并研究了DA5对添加营养的自然海水中细菌的生物控制效果及对水体pH、化学需氧量(COD)、氨氮(NH3-N)和亚硝酸氮(NO2-N)含量的影响。结果表明DA5在振荡培养条件下对溶藻弧菌具有明显的裂解作用,较高的感染比有助于快速减少寄主菌,但长时间的共培养也不能完全清除溶藻弧菌。DA5对自然海水中异养细菌和弧菌均有一定的清除作用,且对弧菌的消减作用更明显,但对水体pH、COD、NH3-N和NO2-N含量均无显著影响,且BALOs含量总体上与细菌或弧菌的含量呈正相关。The strain of marine Bdellovibrio-and-like organisms （BALOs） DA5 was co-cultured in seawater with Vibrio alginolyticus and their interrelationship was investigated. The effects of strain DA5 on the biocontrol of bacteria, and On the variation of pH, chemical oxygen demand （COD）, ammonia-N （NH3-N） and nitrite-N （NO2-N） were also studied in natural seawater media. The results show that DA5 lysed V. alginolyticus obviously under shaking culture conditions. With the higher infection rate, the reduction of prey cells is faster, however co-cultured with DA5 cannot clear up V. alginolyticus completely. The elimination effect of DA5 is better on vibrios than that on hererotrophs, though both are decreased. There is no significant effect on the variation of pH, COD, NH3-N and NO2-N between control and treatment, but there is a positive correlation between the content of BALOs and heterotrophs or vibrios.

关 键 词：海洋蛭弧菌类生物 生物控制 细菌 弧菌 水质 

分 类 号：Q938.1[生物学—微生物学]