Main Ref: | Kääriä, J., J. Eklund, S. Hallikainen, R. Kääriä, M. Rajasilta, K. Ranta-aho and M. Soikkeli, 1988 | |||||||||||
Data Ref.: | ||||||||||||
Country: | Finland | |||||||||||
Spawning ground: | coastal | |||||||||||
Locality: | Baltic Sea | |||||||||||
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: | Spring spawning Baltic herring population. Spawning grounds are mainly sandy and gravel bottoms and the most important ones are situated in the outer zones of the bays. |