Hankin, D.G. and Nicholas, J.W. and Downey, T.W. (1993) Evidence for inheritance of age of maturity in chinook salmon (Oncorhynchus tshawytscha ). Canadian Journal of Fisheries and Aquatic Sciences [CAN. J. FISH. AQUAT. SCI.]., pp. 347-358
| Species | Development state | Trait | Primary Data | Secondary Data |
| Oncorhynchus tshawytscha | Female | Age at sexual maturity | 3-7 [Rarely at 2 or 3] | 5.0 year |
| Oncorhynchus tshawytscha | Female | Weight at sexual maturity | Up to 50 kg | 50.0 kg |
| Oncorhynchus tshawytscha | Male | Age at sexual maturity | May mature as early as 2 as "Jacks", through at least 7 | 2.0 years |
| Oncorhynchus tshawytscha | Male | Weight at sexual maturity | May mature as early as 2 kg as "Jacks", trough at least 50 kg | 2.0 kg |
| Oncorhynchus tshawytscha | Spawning conditions | Parity | Semelparous | Semelparous |