Table 1. The numbers of oysters responding to light in treated and control groups.
| Yantai | Rushan | Penglai | Total | |
|---|---|---|---|---|
| The treated group (OC/T) | 18/33 | 11/33 | 15/34 | 44/100 |
| The control group (OC/T) | 0/33 | 0/33 | 0/34 | 0/100 |
| P-value | < 0.0001 | < 0.0004 | < 0.0001 | < 0.0001 |
| The treated group (O/T) | 18/33 | 14/33 | 16/34 | 48/100 |
| The control group (O/T) | 0/33 | 0/33 | 0/34 | 0/100 |
| P-value | < 0.0001 | < 0.0002 | < 0.0001 | < 0.0001 |
| The treated group (C/T) | 21/33 | 18/33 | 19/34 | 58/100 |
| The control group (C/T) | 0/33 | 0/33 | 0/34 | 0/100 |
| P-value | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 |
Note: OC, the number of individuals not only opening their shells after turning the light on but also closing their shells after turning the light off; O, the number of individuals opening their shells after turning the light on; C, the number of individuals closing their shells after turning the light off; T, the total individual number from any sampling site.