Table 1 Average values of weighted mean depth (WMD) and the percentage of the population at the surface during day and night for female (total, ovigerous, and non-ovigerous) and male P. concinna , Acrocalanus , Paracalanus and Parvocalanus , and Canthocalanus copepodites
|  | WMD (m) | % of population at the surface (0–5 m) | ||||
|---|---|---|---|---|---|---|
| Â | Day | Night | p | Day | Night | p |
Female P. concinna | 16.8 (±1.3) | 12.8 (±3.1) | <0.05 | 6.1 (±2.8) | 38.3 (±12.1) | <0.01 |
Ovigerous | 17.2 (±1.9) | 12.9 (±3.2) | <0.05 | 4.1 (±5.6) | 37.3 (±14.5) | <0.01 |
Non-ovigerous | 16.9 (±1.4) | 13.3 (±3.1) | <0.05 | 6.1 (±7.4) | 33.4 (±9.6) | <0.01 |
Male P. concinna | 16.0 (±1.4) | 12.9 (±3.1) | <0.05 | 15.5 (±16.4) | 40.6 (±20.7) | <0.05 |
Acrocalanus | 9.8 (±3.4) | 10.5 (±2.9) |  | 55.8 (±23.6) | 54.0 (±16.7) |  |
Paracalanus and Parvocalanus | 9.9 (±1.1) | 10.3 (±7.2) |  | 56.6 (±6.1) | 54.2 (±11.1) |  |
Canthocalanus copepodites | 15.5 (±0.8) | 12.2 (±13.4) |  | 21.8 (±7.6) | 41.2 (±11.5) | <0.05 |