Microbial communities and fecal indicator bacteria associated with Cladophora mats on beach sites along Lake Michigan shores

Article Abstract:

A study was conducted to evaluate the abundance and persistence of the fecal indicator bacterium Escherichia coli and sulfate-reducing bacteria (SRB) on Cladophora mats collected at Lake Michigan beaches by using both culture-based and molecular analyses. The presence of SRB on the Cladophora mats suggests that the availability of sulfate is high and when metabolized it releases hydrogen sulfide gas, which has a characteristic pungent odor.

Michigan, Microbial mats, Lake Michigan

Genetic characterization of Escherichia coli populations from host sources of fecal pollution by using DNA fingerprinting

Article Abstract:

Research has been conducted on Escherichia coli from fecal pollution host sources. The authors have characterized the strain diversity from different hosts via the use of DNA fingerprints generated by repetitive extragenic palindromic PCR with repetitive extragenic palindromic primers, and have presented the results.

United States, Research and Testing Services, Scientific Research and Development Services, Administration of Air and Water Resource and Solid Waste Management Programs, Science, Research & Development, Basic Research, Solid Waste R&D, Methods, Analysis, Physiological aspects, Environmental aspects, Genetic aspects, Pollution, DNA testing, DNA identification, Feces, Microbiology, Host-bacteria relationships, Microbial populations, Microbial ecology

Clonal populations of thermotolerant Enterobacteriaceae in recreational water and their potential interference with fecal Escherichia coli counts

Article Abstract:

Escherichia coli is a better indicator of fecal water contamination than other fecal coliforms. Fecal coliforms can replicate in the environment, which would give a false-positive reading. The absence of beta-glucuronidase activity can distinguish these fecal coliforms from E. coli.

Enterobacteriaceae, Water, Aquatic microbiology, Marine bacteria