No detailed citation.
Species | Development state | Trait | Primary Data | Secondary Data |
Oncorhynchus nerka | Spawning conditions | Spawning period duration | 1-2 weeks peak spawning but overall duration 6-8 | 1.5 weeks |
Oncorhynchus nerka | Female | Age at sexual maturity | Overall age of maturity in sockeye salmon ranges from 3 to 8 years. Males are capable of maturing at any of 22 different combinations of freshwater and ocean ages. Kokanee generally mature after either 2, 3 or 4 years | 3.0 years |
Oncorhynchus nerka | Spawning conditions | Spawning migration period | In general, river entry and spawn timing show considerable spatial and temporal variability. Sockeye salmon enter Puget Sound Rivers from mid-June through August, while Columbia River populations gegin river entry in May | ['August', 'May', 'June'] |
Oncorhynchus nerka | Female | Absolute fecundity | 2-5.2 [Average fecundity accross the range of sockeye salmon is from 2-5.2, and from 0.3 to 2 for Kokanee] | 3.6 thousand eggs |
Oncorhynchus nerka | Spawning conditions | Spawning season | Spawn in Puget Sound from late September to late December and occasionally into January, and in the Columbia River from late September to early November | ['November', 'January', 'December', 'September'] |
Oncorhynchus nerka | Female | Age at sexual maturity | Overall age of maturity in sockeye salmon ranges from 3 to 8 years, female may mature at any 14 different age compositions. Kokanee generally mature after either 2, 3 or 4 years | 3.0 year |