Dumas, R.F. (1966) Observations on yolk sac constriction in landlocked Atlantic salmon fry. The progressive Fish-culturist, pp. 73-75
| Species | Development state | Trait | Primary Data | Secondary Data |
| Salmo salar | Egg | Incubation time | 56 [11°C] and 65 [8.3°C] [Total incubation times were: 56 days for eggs in 53°F water, 65 days for eggs in 47°F water] | 56.0 days |
| Salmo salar | Egg | Degree-days for incubation | 540-600 [56 at 11°C and 65 at 8.3°C] | 570.0 °C * day |