Table 5.
Population levels (log10 cfu g−1 of contents ± SD) of bacterial groups in the digestive microbiota of Pimelodus maculatus from lentic (Res) and lotic (Riv) habitats and seasons.
| Bacterial group | Spring | Summer | Autumn | Winter | |
|---|---|---|---|---|---|
| Total anaerobes | Res | 7.2 ± 1.5 | 7.4 ± 0.0 | 7.5 ± 0.0 | 8.2 ± 0.5 |
| Riv | 8.5 ± 0.3a | 7.7 ± 0.4b | 7.6 ± 0.3b | 8.4 ± 0.3a | |
| Bacteroides | Res | 6.7 ± 1.8 | 7.9 ± 0.3 | 7.5 ± 0.0 | 6.8 ± 1.3 |
| Riv | 8.2 ± 0.3a | 7.3 ± 0.2b | 7.4 ± 0.5b | 8.2 ± 0.3a | |
|
| |||||
| Total aerobes | Res | 3.6 ± 4.1 | 7.8 ± 0.3 | 8.1 ± 0.0 | 5.7 ± 3.4 |
| Riv | 5.2 ± 4.7 | 7.7 ± 0.3 | 7.8 ± 0.3 | 8.0 ± 0.1 | |
| Enterobacteria | Res | 6.0 ± 1.1a | 7.2 ± 0.6ab | 7.7 ± 0.0ab | 7.6 ± 0.6b |
| Riv | 6.8 ± 4.0 | 7.4 ± 0.2 | 7.8 ± 0.4 | 7.8 ± 0.2 | |
| Vibrio | Res | 0.0 ± 0.0 | 5.7 ± 1.0 | 2.9 ± 1.9 | 2.3 ± 3.5 |
| Riv | 2.9 ± 2.8 | 5.5 ± 1.5 | 5.3 ± 0.0 | 2.7 ± 3.7 | |
Different letters indicate significant difference between the seasons (Mann-Whitney non parametric test, p < 0.05).
Supplemented blood agar: total anaerobes; BBE agar: Bacteroides; Blood agar: total aerobes; MacConkey agar: enterobacteria; TCBS agar: Vibrio.