TABLE 5.
Pearson correlation coefficients comparing the physicochemical parameters of the harvest water with the colony overlay procedure for peptidases assay or the most-probable-number–PCR method
| Physicochemical parameter | Comparison | Correlation coefficient (r value, significance level)a
|
|
|---|---|---|---|
| Water | Oysters | ||
| Temp | COPP vs temp | 0.36, <0.0001 | 0.49, <0.0001 |
| Salinity | COPP vs salinity | 0.46, <0.0001 | −0.27, 0.3254 |
| Dissolved oxygen | COPP vs dissolved oxygen | −0.70, <0.0001 | −0.10, 0.3254 |
| Turbidity | COPP vs turbidity | 0.63, <0.0001 | −0.30, 0.0024 |
| Chlorophyll a | COPP vs chlorophyll a | −0.18, 0.0705 | 0.13, 0.2005 |
| pH | COPP vs pH | −0.22, 0.0231 | −0.06, 0.5175 |
| Temp | V. vulnificus (MPN-PCR) vs temp | 0.41, <0.0001 | 0.48, <0.0001 |
| Salinity | V. vulnificus (MPN-PCR) vs salinity | 0.07, 0.4445 | −0.24, 0.0112 |
| Dissolved oxygen | V. vulnificus (MPN-PCR) vs dissolved oxygen | −0.33, 0.0005 | 0.02, 0.8564 |
| Turbidity | V. vulnificus (MPN-PCR) vs turbidity | 0.25, 0.0105 | −0.24, 0.0112 |
| Chlorophyll a | V. vulnificus (MPN-PCR) vs chlorophyll a | 0.04, 0.7065 | −0.02, 0.0179 |
| pH | V. vulnificus (MPN-PCR) vs pH | −0.19, 0.0606 | −0.02, 0.8395 |
| Temp | V. parahaemolyticus (MPN-PCR) vs temp | −0.02, <0.0001 | 0.19, 0.0536 |
| Salinity | V. parahaemolyticus (MPN-PCR) vs salinity | 0.68, <0.0001 | 0.34, 0.0003 |
| Dissolved oxygen | V. parahaemolyticus (MPN-PCR) vs dissolved oxygen | −0.59, <0.0001 | −0.16, 0.1119 |
| Turbidity | V. parahaemolyticus (MPN-PCR) vs turbidity | 0.69, <0.0001 | −0.16, 0.1058 |
| Chlorophyll a | V. parahaemolyticus (MPN-PCR) vs chlorophyll a | −0.28, 0.0038 | −0.13, 0.1766 |
| pH | V. parahaemolyticus (MPN-PCR) vs pH | −0.14, 0.1715 | 0.01, 0.8938 |
a
Correlations reflect surface water comparisons for water and bottom water comparisons for oysters, with the exception of those with chlorophyll a, which are surface water for both. Numbers in bold are r values of >0.40.