Chimits, P. (1951) Quelques observations sur la fraye du brochet et le transport des oeufs embryonnés. Bulletin francais de pisciculture, pp. 135-143
| Species | Development state | Trait | Primary Data | Secondary Data |
| Esox lucius | Egg | Degree-days for incubation | 120 | 120.0 °C * day |
| Esox lucius | Larvae | Full yolk-sac resorption | About 14 days | 14.0 °C * day |
| Esox lucius | Spawning conditions | Spawning season | Started in February and ended in March | ['February', 'March'] |
| Esox lucius | Spawning conditions | Spawning temperature | Spawning started at 6°C (in 1949) and 6.5°C (1948) and ended when temperature reach 8°C (in 1949) and 9.5°C (1948). Spawning stopped if water decreased below 6°C | 6.0 °C |