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Main Ref: | Chyung, M.-K., 1977 | |||||||||||
Data Ref.: | ||||||||||||
Country: | ||||||||||||
Spawning ground: | riverine | |||||||||||
Locality: | Korea | |||||||||||
Season: |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
111 | 111 | 111 | ||||||||||
Sex ratio: | % Ref.: | |||||||||||
Temperature: | - °C | |||||||||||
Gestation period: | month/s | |||||||||||
Length of offspring: | cm | |||||||||||
Batch spawners | ||||||||||||
Daily spawning frequency |
- Mean: |
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Min Ref.: Max Ref.: Mean Ref.: |
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Comments: | Spawning occurs in the headwaters of rivers. The eggs require a water temperature of ~10° C for proper fertilization. Forty days later the water temperature can be lowered to ~8° C for an additional 60 to 90 days before the hatching occurs. Larvae live 1.5-2.0 years in rivers and go to the ocean in October through September; mature adults return 3 or 4 years later to freshwater rivers to spawn and then die. | |||||||||||
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