Ref. principal | Scott, W.B. and E.J. Crossman, 1973 |
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Notas | Found in shallow and deep waters of northern lakes and streams and is restricted to relatively deep lakes in the southern part of its range (Ref. 5723). Rarely in brackish water (Ref. 11980). A solitary wanderer, the extent of their movements apparently limited by the size of the lake and individual (Ref. 27547). Although lake trout generally feed on a variety of organisms such as freshwater sponges, crustaceans, insects, fishes (with a preference for ciscoes), and small mammals, some populations feed on plankton throughout their lives (Ref. 27547). Such plankton-feeding lake trout grow more slowly, mature earlier and at smaller size, die sooner and attain smaller maximum size than do their fish-eating counterparts (Ref. 30351). Juveniles feed on invertebrates (Ref. 1998). |
Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
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Marine zones / Brackish and freshwater bodies |
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Substrato | |
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Substrate Ref. | |
Habitats especiais | |
Special habitats Ref. |
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Associações | |
Associada com | |
Comentários sobre associação | |
Parasitismo |
Tipo de alimentação | mainly animals (troph. 2.8 and up) |
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Feeding type Ref. | Scott, W.B. and E.J. Crossman, 1973 |
Hábito alimentar | hunting macrofauna (predator) |
Feeding habit Ref. | Scott, W.B. and E.J. Crossman, 1973 |
Estimation method | Amostra original | População virgem (não pescada) | Nota | ||
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Troph | s.e. | Troph | s.e. | ||
Da composição da dieta | 4.29 | 0.51 | 4.48 | 0.81 | Troph of juv./adults from 1 study. |
Dos itens alimentares individuais | 3.77 | 0.61 | Trophic level estimated from a number of food items using a randomized resampling routine. | ||
Ref. | Jude, D.J., F.J. Tesar, S.F. Deboe and T.J. Miller, 1987 |