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• 研究简报 • 上一篇    

缢蛏滩涂养殖环境的细菌群落组成及分析

金珊1 薛超波1,2 王国良1 陆彤霞1 王一农1 陈寅儿1   

  1. 1宁波大学生命科学与生物工程学院, 宁波 315211;2舟山市疾病预防控制中心, 舟山 316000
  • 收稿日期:2004-07-27 修回日期:2005-01-25 出版日期:2005-07-18

Bacterial flora composition and its dynamics in tidalflat Sinonovacula constricta aquaculture area

JIN Shan 1,XUE Chaobo 1,2,WANG Guoliang 1,LU Tongxia 1,WANG Yinong1, CHEN Yiner 1   

  1. 1Faculty of Life Science and Technology,Ningbo University,Ningbo 315211, China;2Center for Disease Prevention and Control of Zhoushan,Zhoushan 316000,China

  • Received:2004-07-27 Revised:2005-01-25 Online:2005-07-18

关键词: 甲烷, 甲烷氧化菌, 氨态氮, 硝态氮, 抑制, 土壤

Abstract: 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 7.6×103 cfu·g-1~2.0×105 and 1.6×10 3~1.0×105 cfu·g-1,ammonifying bacteria fluctuated in 1.5×10 6~9.0×107 and 9.0×10 5~1.0×10 7 cfu·g-1,denitrifying bacteria fluctuated in 9.0×10 3~4.0×10 6 and 1.9×10 4~2.0×10 6 and 5.0×10 2~1.9×10 6 cfu·g-1,and sulphate reducing bacteria fluctuated in 5.0×10 4~5.0×10 6 ~4.0×10 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.

Key words: Methane, Methane oxidizing bacteria, Ammonium, Nitrate, Inhibition, Soil