| Autor: |
Boisneau, Ph., Mennesson, C., Bagliniere, J. |
| Zdroj: |
Hydrobiologia; September 1985, Vol. 128 Issue: 3 p277-284, 8p |
| Abstrakt: |
We studied the migratory activity of shad (Alosa alosa Linné) in the middle part of the Loire river, using stop net catches, in 1984. The migration started in the beginning of April, instead of February, as more usual. The end of migration is not precisely known, because of adverse hydrological conditions. During migration, the shad principally used the channel with the highest current velocity. The migration was disturbed by the presence of obstacles (weirs, dams of nuclear power stations). The daily and hourly activity of migration was strongly correlated with variations in water temperature. Shads did not run up at temperatures below 11°C. The upstream limit of ditribution was situated at more than 500 km from the estuary. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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