缢蛏滩涂养殖环境的细菌群落组成及分析

编号 zgly0000391277

文献类型 期刊论文

文献题名 缢蛏滩涂养殖环境的细菌群落组成及分析

作者 金珊  薛超波  王国良  陆彤霞  王一农  陈寅儿 

作者单位 宁波大学生命科学与生物工程学院  舟山市疾病预防控制中心 

母体文献 应用生态学报 

年卷期 2005,16(7)

页码 1380-1382

年份 2005 

分类号 Q939.1  S944.48 

关键词 Sinonovacula  constricta  Tidal-flat  area  Heterotrophic  bacteria  Ammonifying  bacteria  Denitrifying  bacteria  Sulphate  reducing  bacteria 

文摘内容 In this study, the bacteria from the mud in tidal-flat Sinonovacula constricta aquaculture area were isolated each month from March to December, 2002, and the temporal and spatial distribution of heterotrophic bacteria, ammonifying bacteria, denitrifying bacteria, and sulphate reducing bacteria were analyzed. The results showed that all the 515 isolated bacteria mainly belonged to 1 family and 13 genera. The bacterial flora in different layers of the mud was almost consistent, while the composition was different. The predominant genera were Clostridium,Bacillus, Corynebacterium, Photobacterium, and some Enterobacteriaceae. The number of heterotrophic bacteria in the surface layer and the bottom fluctuated in 7.6×10^3cfu·g^-1～2.0×10^5 and 1.6×10^3～1.0×10^5cfu·g^-1, ammonifying bacteria fluctuated in 1.5×10^6～9.0×10^7 and 9.0×10^5～1.0×10^7cfu· g^-1, denitrifying bacteria fluctuated in 9.0×10^3～4.0×10^6 and 5.0×10^2～1.9×10^6cfu·g^-1, and sulphate reducing bacteriafluctuated in 5.0×10^4～5.0×10^6 and 1.9×10^4～2.0×10^6 cfu·g^-1, respectively. The detection rates of ammonifying bacteria, denitrifying bacteria and sulphate reducing bacteria in the mud were all 100%, and these bacteria increased significantly in the second half of the year, indicating that the environment of the Sinonovacula constricta aquaculture area was deteriorated due to the accumulation of NH3, nitrite and H2S, and it is important to regulate the breed capacity and redistribute the breeding environment。