Table 1.
Water quality parameters of the experimental colonies. Results are the mean and standard deviation (SD) of four measurements made during larval generations 12 to 15
| Parameter | Fresh water Mean ± SD |
Drain water Mean ± SD |
Comparison |
|---|---|---|---|
| Temperature (°C) | 29.5 ± 0.4 | 29.3 ± 0.4 | t = 0.49; P = 0.322 |
| pH | 7.4 ± 0.2 | 7.2 ± 0.5 | t = 0.48; P = 0.326 |
| Dissolved oxygen (ppm) | 3.09 ± 0.20 | 1.53 ± 0.15 | t = 10.85; P = 0.001 |
| Conductivity (μS/cm) | 1518 ± 69 | 4890 ± 387 | t = 14.85; P = 0.001 |
| Total dissolved solids (ppm) | 774.33 ± 66.40 | 2577.67 ± 185.05 | t = 15.88; P = 0.001 |
| Salinity (PSU) | 0.77 ± 0.07 | 2.68 ± 0.34 | t = 9.44; P = 0.001 |
Abbreviations: ppm, parts per million; μS/cm, micro-Siemens per centimeter; PSU, practical salinity unit equivalent to parts per thousand of salt