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| Main Ref: | Rechlin, O., 1991 | |||||||||||
| Data Ref.: | ||||||||||||
| Country: | ||||||||||||
| Spawning ground: | coastal | |||||||||||
| Locality: | Western and southwestern Baltic | |||||||||||
| Season: |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 111 | 111 | 90 | 100 | 111 | 111 | 111 | ||||||
| Sex ratio: | 48.8 % Ref.: Jenkins, J.T., 1902 | |||||||||||
| Temperature: | 1 - 4 °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 coastal waters with low salinity in depth as shallow as 50 cm. Spawning starts sometimes at 1°C, peaks at 4°C in April and early May. Very good feeding conditions during summer followed by a mild winter can induce start of spawning in November with peaks in January/February. | |||||||||||
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