Slater, C.H. and Schreck, C.B. and Swanson, P. (1994) Plasma profiles of the sex steroids and gonadotropins in maturing female spring chinook salmon (Oncorhynchus tshawytscha). Comp. Biochem. Physiol., pp. 167-175
| Species | Development state | Trait | Primary Data | Secondary Data |
| Oncorhynchus tshawytscha | Spawning conditions | Spawning migration distance | 494-km spawning migration | 494.0 km |
| Oncorhynchus tshawytscha | Spawning conditions | Spawning migration period | Return to their natal river 6-9 months prior to spawning, as early as February | ['February'] |
| Oncorhynchus tshawytscha | Spawning conditions | Homing | Return to their natal river | Present |
| Oncorhynchus tshawytscha | Spawning conditions | Spawning season | Spawning normally occur in September | ['September'] |