Migration and survival of Atlantic salmon Salmo salar smolts in a large natural lake
| Autor: | Robert Rosell, Michael Millane, Dennis Doherty, Richard J. Kennedy, Michelle Allen |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Salmo salar Aquatic Science Biology 010603 evolutionary biology 01 natural sciences Predation Rivers Animals Telemetry Mortality Salmo Predator Ecology Evolution Behavior and Systematics Esox Pike computer.programming_language 010604 marine biology & hydrobiology Acoustics biology.organism_classification Fishery Lakes Predatory Behavior Esocidae Animal Migration computer |
| Zdroj: | Journal of Fish Biology. 93:134-137 |
| ISSN: | 0022-1112 |
| Popis: | An investigation with acoustic telemetry of the passage of Salmo salar smolts through a large natural lake found heavy mortality occurred at the river-to-lake confluences (mean 31.2% km-1 ), but was lower in the main body of the lake (mean 2.4% km-1 ). Predation was a significant pressure on emigrating smolts as tagged pike Esox lucius aggregated at river-to-lake confluences during the peak of the smolt run. Tagged smolts mainly emmigrated into the lake in the late evening after dusk, possibly as a predator-avoidance behaviour. |
| Databáze: | OpenAIRE |
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