Movements of two strains of radio tagged Altlantic salmon, Salmo salar L., smolts through a reservoir
Smolt migration through a shallow and turbid hydro‐reservoir in a major Danish river system was investigated using radiotelemetry. Hatchery‐reared 1+‐year‐old Atlantic salmon, Salmo salar L., smolts of equal size from two different non‐native strains were radio‐tagged and followed during their downs...
| Published in: | Fisheries Management and Ecology |
|---|---|
| Main Authors: | , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
1999
|
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1046/j.1365-2400.1999.00132.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2400.1999.00132.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2400.1999.00132.x |
| Summary: | Smolt migration through a shallow and turbid hydro‐reservoir in a major Danish river system was investigated using radiotelemetry. Hatchery‐reared 1+‐year‐old Atlantic salmon, Salmo salar L., smolts of equal size from two different non‐native strains were radio‐tagged and followed during their downstream migration through the 12‐km‐long reservoir. A total of 50 salmon smolts, 25 of Swedish (Øtran River) and 25 of Irish (Burrishoole River) origin, were surgically implanted with miniature radiotransmitters. The tagged smolts were tracked daily over a 3‐week period in May 1996. The Øtran smolts initiated migration first ( P < 0.001), moved faster ( P < 0.01), were delayed less when passing a culvert ( P < 0.001) and were more successful in moving through the reservoir than the Burrishoole smolts. The observed differences in migratory behaviour are interpreted as evidence of a genetic component influencing smolt migration. |
|---|