Comparison of sulphate-reducing bacterial communities in Japanese fish farm sediments with different levels of organic enrichment.

ABSTRACT: Fish farm sediments receive a large amount of organic matter from uneaten food and fecal material. This nutrient enrichment, or organic pollution, causes the accumulation of sulphide in the sediment from the action of sulphate-reducing bacteria (SRB). We investigated the effect of organic enrichment around coastal fish farms comparing the SRB community structure in these sediments. Sediment samples with different levels of organic pollution classified based upon the contents of acid-volatile sulphide and chemical oxygen demand were collected at three stations on the coast of western Japan. The SRB community composition was assessed using PCR amplification, cloning, sequencing and phylogenetic analysis of the dissimilatory sulphite reductase b-subunit gene (dsrB) fragments using directly ex

SUBMITTER: Kondo R 

PROVIDER: S-EPMC4036007 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature