Parensky, V.A. and Shevlyakov, E.A. and Kovalev, M.Y.u. (2002) Overcrowding of Spawning Areas with Spawners of Sockeye Salmon Oncorhynchus nerka as a Factor Determining the Discrete Dates of Larvae Hatching and Differentiation of Juveniles by Body Size. Journal of Ichthyology/Voprosy Ikhtiologii [J. Ichthyol./Vopr. Ikhtiol.], pp. 739-742
Species | Development state | Trait | Primary Data | Secondary Data |
Oncorhynchus nerka | Egg | Temperature for incubation | 2.5-3.5°C in the ground at the level of the lower horizon of a redd and 5-7°C in the upper layer of a redd | 3.0 °C |
Oncorhynchus nerka | Egg | Degree-days for incubation | 630-640 | 635.0 °C * day |
Oncorhynchus nerka | Spawning conditions | Spawning water type | Rivers and bowls | No category |
Oncorhynchus nerka | Spawning conditions | Mating system | By pair | Monogamy |
Oncorhynchus nerka | Spawning conditions | Parity | Post-spawning death | Semelparous |