期刊
AQUACULTURE RESEARCH
卷 47, 期 8, 页码 2569-2581出版社
WILEY
DOI: 10.1111/are.12705
关键词
bacterial community shift; milkfish cages; milkfish feeds; Philippines; organic matter sedimentation
类别
资金
- Japan Society for the Promotion of Science (JSPS)
- Asian Core Program
- Rendai-Student Support Program
- United Graduate School of Agricultural Sciences, Kagoshima University
- KAKENHI [23580258]
- Grants-in-Aid for Scientific Research [23580258] Funding Source: KAKEN
Bacterial communities in sediments underneath milkfish cages and adjacent off-cage areas in Bolinao, Lingayen Gulf, West Philippine Sea were characterized using PCR-denaturing gradient gel electrophoresis to assess influence of the fish farming to the sediments. The sediments in the fish case (FC) area showed anoxic conditions [redox potential of-165 to-213 mV and acid-volatile sulphide-sulphur (AVS-S) of 0.55-1.88 mg g(-1) (dry weight)] compared to the relatively oxic off-cage area [redox potential of 72-81 mV and AVS-S of 0.09-0.14 mg g(-1) (dry weight)]. The composition of the microbial populations revealed influence of the fish feed sedimentation with higher dominance of putative sulphate-reducing bacteria (SRB) in the PC area. Compositions of the bacterial taxa showed dominance of the Bacteroidetes group and Deltaproteobacteria. The results suggest that the fish feeds created a new suitable environment, in which reductive microorganisms such as SRB, ferric-ion-reducing bacteria and nitrate-reducing bacteria can thrive. Organic load from the feed and quantity of its leftover constituents may be the key factors that influence the structure of the bacterial community in the sediments of the milkfish farms.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据