Heggberget, T.G. and Wallace, J.C. (1984) Incubation of the eggs of Atlantic salmon, Salmo salar, at low temperatures. Can. J. Fish. Aquat. sci., pp. 389-391
| Species | Development state | Trait | Primary Data | Secondary Data |
| Salmo salar | Egg | Incubation time | 214-232 at 0.65-1.31°C [Time to 50% hatch] | 223.0 days |
| Salmo salar | Egg | Temperature for incubation | In natural conditions, mean of 0.65 and a range of 4.0 to 0.1°C | 0.65 °C |
| Salmo salar | Egg | Degree-days for incubation | 280 at 1.31°C [Heat sum to 50% hatch] | 280.0 °C * day |