Table 1.
Summary of qPCR detection of Campylobacter and fecal indicators (Enterococcus and Bacteroidetes) in gull excreta
| Sampling date | No. of samples (no. of Campylobacter-positive samples) | No. of CE/ga (SD) for: |
Campylobacter/Enterococcus and Campylobacter/Bacteroidetes ratiosb | ||
|---|---|---|---|---|---|
| Campylobacter spp. | Enterococcus | Bacteroidetes | |||
| 7/23/2009 | 5 (3) | 1.5e+4 (2.6e+4) | 1.2e+6 (1.9e+6) | 1.9e+3 (2.1+3) | 0.01, 7.95 |
| 7/24/2009 | 8 (5) | 2.9e+6 (6.9e+6) | 5.2e+5 (1.3e+6) | 559 (859) | 5.61, 5261.16 |
| 7/25/2009 | 7 (1) | 73 (193) | 8.5e+3 (2e+4) | 754 (824) | 0.01, 0.09 |
| 7/26/2009 | 9 (7) | 1.0e+5 (2.7e+5) | 7.6e+5 (1.5e+6) | 537 (351) | 0.13, 187.48 |
| 8/8/2009 | 10 (7) | 2.2e+3 (3.7e+3) | 570 (845) | 1.1e+3 (1.9e+3) | 3.84, 1.93 |
| 8/9/2009 | 10 (3) | 2.3e+5 (7e+5) | 3.9e+4 (1.1e+5) | 298 (587) | 5.82, 757.45 |
| 8/15/2009 | 10 (6) | 7.6e+4 (1.3e+5) | 1.7e+5 (3.3e+5) | 4.4e+3 (1.2e+4) | 0.44, 17.18 |
| 8/16/2009 | 4 (2) | 2.2e+5 (4.4e+5) | 4.5e+5 (8.9e+5) | 1.9e+3 (1e+3) | 0.49, 118.84 |
| 8/18/2009 | 10 (7) | 2.4e+5 (5.2e+5) | 1.8e+5 (4.4e+5) | 1.5e+4 (4.2e+4) | 1.38, 16.76 |
| 8/19/2009 | 10 (1) | 128 (405) | 0 (0) | 0 (0) | |
| 8/20/2009 | 10 (7) | 6.8e+7 (2.2e+8) | 8.6e+5 (1.4e+6) | 1.1e+4 (3.e+4) | 78.61, 6102.14 |
| 8/22/2009 | 10 (0) | 0 (0) | 41 (131) | 239 (506) | |
| 8/23/2009 | 7 (3) | 2e+7 (5.2e+7) | 2.1e+4 (4.4e+4) | 3e+3 (5.3e+3) | 954.44, 6565.18 |
| 8/29/2009 | 10 (7) | 1.3e+5 (2.2e+5) | 4.5e+6 (1.2e+7) | 3.2e+3 (8e+3) | 0.02, 41.33 |
| 8/30/2009 | 9 (8) | 2.7e+6 (2.4e+6) | 4.6e+5 (1.1e+6) | 1.e+3 (3e+3) | 5.77, 1618.00 |
| 9/5/2009 | 8 (7) | 2e+7 (4.7e+7) | 3.4e+6 (6.7e+6) | 8e+3 (1.4e+4) | 5.76, 2455.40 |
| 9/6/2009 | 9 (6) | 7.4e+5 (2e+6) | 3.7e+6 (1.1e+7) | 3.2e+6 (9.7e+6) | 0.19, 0.22 |
| 9/12/2009 | 8 (6) | 4.7e+5 (8.9e+5) | 1.2e+6 (2e+6) | 2.1e+3 (2.8e+3) | 0.40, 226.61 |
| 9/13/2009 | 5 (0) | 0 (0) | 784 (612) | 1.1e+3 (998) | |
| Total | 159 (86) | ||||
a
Each value is the average for the replicates of gull samples processed for the given date. Relative abundance was estimated using the number of cell equivalents (CE) per gram (wet weight).
b
The average value of each group was used to calculate the ratios.