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| Main Ref: | Billard, R., 1997 | |||||||||||
| Data Ref.: | ||||||||||||
| Country: | France | |||||||||||
| Spawning ground: | ||||||||||||
| Locality: | France | |||||||||||
| Season: |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 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 eggs are deposited in gravel or sand nests. Larval life is long, about 3-5 years; adult life is brief. The parents die after reproduction. The eggs are not as big as those of Lampetra fluviatilis and hatch after 3 or 4 days of incubation. The larvae are blind and have no teeth. Gametogenesis starts before metamorphosis (Ref. 30578). | |||||||||||
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