Marine bacteria have been arbitrarily defined as bacteria from the sea which on initial isolation require for growth a medium containing sea water as the diluent (ZoBell and Upham, 1944). The function of sea water in media for the growth of these organisms has never been clearly established. It has been stated, however, that neither isotonic salt solution nor artificial sea water is as good as ...

In temperate regions, seasonal variability of environmental factors affects the bacterial community in source water and finished drinking water. Therefore, the bacterial core community and its seasonal variability in cold and the respective hot drinking water was investigated. The bacterial core community was studied by 16S rRNA-based SSCP fingerprint analyses and band sequencing of DNA and RNA...

Hunter harvest data suggest that feral hog (Sus scrofa) populations in western Louisiana are increasing, and population control in this region is complicated by the mixing of feral and domestic free-ranged hogs. Aggressive management may be warranted as feral and domestic hogs appear to be having unexpected effects on their ecosystem. We present the results of 3 recent investigations of genetic...

The present paper provides results of a study on heterotrophic bacteria occurrence and quantity in the biofilm and subsurface water of lake Jeziorak Maty. Degradation of several polycyclic aromatic hydrocarbons (PAH's) (anthracene, naphthalene) by neustonic and planktonic bacteria have been examined. It has been discovered that some aromatic hydrocarbons were better decomposed by neustonic bact...

Several heavy metal resistant bacterial strains were isolated from sediment and water samples collected from the Persian Gulf and enclosed industrial areas. All the isolated bacteria were identified by 16S rRNA gene sequencing. Isolated bacteria were tested for the presence of plasmids using the modified alkaline lysate method. The method was effective for identification and characterization of...

Contamination of surface waters with fecal bacteria from grazinglands is a component of nonpoint source agricultural pollution. Methods are needed to limit the movement of fecal bacteria from grazinglands into surface water. We used two experimental watersheds to test for impact of cattle on total coliform, E. coli, and enterococci bacteria numbers. Grazing cattle elevated these microbe numbers...

A new radiometric method for the detection of coliform bacteria in water has been described. The method is based on the release of (14)CO(2) from [(14)C]lactose by bacteria suspended in growth medium and incubated at 37 C. The evolved (14)CO(2) is trapped by hyamine hydroxide and counted in a liquid scintillation spectrometer. The method permits the detection of 1 to 10 organisms within 6 h of ...