| Main Ref: | Sokolov, L.I. and L.S. Berdicheskii, 1989 | |||||||||||
| Data Ref.: | ||||||||||||
| Country: | Russia | |||||||||||
| Spawning ground: | riverine | |||||||||||
| Locality: | Volga (spring spawning) | |||||||||||
| Season: |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 111 | 111 | |||||||||||
| Sex ratio: | % Ref.: | |||||||||||
| Temperature: | 8.9 - 12 °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: | The early spring sturgeons enter Volga from March through May, migrate in the river for a period from a few days to 1-1.5 months and spawn from mid-May through early June. | |||||||||||