| gram-negative intestinal indigenous microbiota from two siluriform fishes in a tropical reservoir. | the gram-negative intestinal microbiota of hypostomus auroguttatus and pimelodus maculatus, a detritivorous and an omnivorous fish species, respectively, were compared between fishes from the reservoir and the stretch of the river below the dam of the funil hydroelectric plant, rio de janeiro, brazil. four selective culture media were used under aerobic and two under anaerobic conditions. the omnivorous species had microbiota with higher population levels compared to the detritivorous species. t ... | 2014 | 25763032 |