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.
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NOAA Fisheries, Northeast Fisheries Sci Ctr, Maine Field Stn, 17 Godfrey Dr Suite 1, Orono, ME 04473 USAFisheries & Oceans Canada, St Andrews Biol Stn, 125 Marine Sci Dr, St Andrews, NB E5B 0E4, Canada
Hawkes, James P.
McKindsey, Christopher W.
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Fisheries & Oceans Canada, Inst Maurice Lamontagne, 850 Route Mer, Mont Joli, PQ G5H 3Z4, CanadaFisheries & Oceans Canada, St Andrews Biol Stn, 125 Marine Sci Dr, St Andrews, NB E5B 0E4, Canada
McKindsey, Christopher W.
O'Flaherty-Sproul, Mitchell
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Fisheries & Oceans Canada, St Andrews Biol Stn, 125 Marine Sci Dr, St Andrews, NB E5B 0E4, CanadaFisheries & Oceans Canada, St Andrews Biol Stn, 125 Marine Sci Dr, St Andrews, NB E5B 0E4, Canada
O'Flaherty-Sproul, Mitchell
Simard, Emilie
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Fisheries & Oceans Canada, Inst Maurice Lamontagne, 850 Route Mer, Mont Joli, PQ G5H 3Z4, CanadaFisheries & Oceans Canada, St Andrews Biol Stn, 125 Marine Sci Dr, St Andrews, NB E5B 0E4, Canada
Simard, Emilie
Page, Fred
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Fisheries & Oceans Canada, St Andrews Biol Stn, 125 Marine Sci Dr, St Andrews, NB E5B 0E4, CanadaFisheries & Oceans Canada, St Andrews Biol Stn, 125 Marine Sci Dr, St Andrews, NB E5B 0E4, Canada