Main Ref: | Pimpicka, E., 1990 | |||||||||||
Data Ref.: | Pimpicka, E., 1990 | |||||||||||
Country: | Poland | |||||||||||
Spawning ground: | ||||||||||||
Locality: | Lake Drweckim (1978-1980) | |||||||||||
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: | The GSI variation for two years was: April:2.7-3.7, May:5.1-6.6, June:5.5-16.1, July:11.5-27.1, August:1.4-5.1, Sept:3.1-4.0, Oct:1.8-3.0, Nov:1.5-4.2, Feb:2.5-4.3, May:0.7-12.6, June:1.1-18.2, July:2.9-16.4, Aug:2.1-4.0, Sept:3.2-4.8, Oct:1.4-6.1, Nov:3.0-4.4, Dec:0.7-4.4, Jan:3.1-4.4, Feb:2.9-9.4, Apr:2.8-5.1, May:2.5-5.8, June:1.9-21.1 (Ref. 75609). |