Extended Residence of Young-of-the-Year Lake Trout in Shallow Water

Peck, James W.

doi:10.1577/1548-8659(1982)111<775:eroylt>2.0.co;2

Cited by 22 publications

(14 citation statements)

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“…Although there is little quantitative, published data related to habitat use by juvenile lake trout, some studies have indicated that juvenile lake trout may be found associated with coarse substrates (Greeley 1936 in Martin and Olver 1980;Martin and Olver 1980;Wagner 1981;Peck 1982). In this study, lake trout spent the greatest proportion of time in the water column and rarely used cover or bottom habitats.…”

Section: Discussionmentioning

confidence: 64%

“…Treatments varied in the presence of cover habitat (present or absent), fish density (one or two fish per tank), and species composition (bull trout, lake trout, or bull trout and lake trout) (Table 1). Fish densities were at least as great as those observed for these species in field studies (e.g., Peck 1982;Fraley and Shepard 1989;Hagen and Taylor 2001;Polacek and James 2003;Banish et al 2008;Meeuwig et al 2008). Cover consisted of one 85 mm long by 98 mm inside diameter section of PVC pipe, which was cut in half (internal volume=0.32 l).…”

Section: Methodsmentioning

confidence: 65%

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Use of cover habitat by bull trout, Salvelinus confluentus, and lake trout, Salvelinus namaycush, in a laboratory environment

2010

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Lacustrine-adfluvial bull trout, Salvelinus confluentus, migrate from spawning and rearing streams to lacustrine environments as early as age 0. Within lacustrine environments, cover habitat provides refuge from potential predators and is a resource that is competed for if limiting. Competitive interactions between bull trout and other species could result in bull trout being displaced from cover habitat, and bull trout may lack evolutionary adaptations to compete with introduced species, such as lake trout, Salvelinus namaycush. A laboratory experiment was performed to examine habitat use and interactions for cover by juvenile (i.e., <80 mm total length) bull trout and lake trout. Differences were observed between bull trout and lake trout in the proportion of time using cover (F 1,22.6 =20.08, P<0.001) and bottom (F 1,23.7 =37.01, P<0.001) habitat, with bull trout using cover and bottom habitats more than lake trout. Habitat selection ratios indicated that bull trout avoided water column habitat in the presence of lake trout and that lake trout avoided bottom habitat. Intraspecific and interspecific agonistic interactions were infrequent, but approximately 10 times greater for intraspecific interactions between lake trout. Results from this study provide little evidence that juvenile bull trout and lake trout compete for cover, and that species-specific differences in habitat use and selection likely result in habitat partitioning between these species.

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Section: Discussionmentioning

confidence: 64%

Section: Methodsmentioning

confidence: 65%

Use of cover habitat by bull trout, Salvelinus confluentus, and lake trout, Salvelinus namaycush, in a laboratory environment

2010

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“…Bronte et al (1995) found that age-0 lake trout in Lake Superior were associated with sandy substrates where detritus and benthic macroinvertebrates were available as food for Mysis. Peck (1982) found that age-0 lake trout remained close to spawning areas through the summer, preferring sandy substrates over other bottom types. Juvenile lake trout in this study were sampled over soft sediments, further emphasizing that this habitat is important to lake trout growth during their early life history stages.…”

Section: Dietmentioning

confidence: 99%

Heritage strain and diet of wild young of year and yearling lake trout in the main basin of Lake Huron

Roseman

Stott

O’Brien

et al. 2009

Journal of Great Lakes Research

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“…Number of individual sites used to calculate the mean is shown beside the range bar. Data are from Bronte et al (1981), Jude et al (1981), Peck (1982, 1986), and Wagner (1981.…”

Section: Figmentioning

confidence: 99%

The significance of man-made structures for lake trout spawning in the Great Lakes: are they a viable alternative to natural reefs?

Fitzsimons¹

1996

Can. J. Fish. Aquat. Sci.

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High lake trout (Salvelinus namaycush) egg abundance reported at some man-made structures, including artificial reefs in Lakes Michigan and Ontario, indicates that construction of artificial reefs may be one means of enhancing reproduction for this species in the Great Lakes. A review of spawning at man-made and natural spawning areas indicated consistently higher abundance of eggs, fry, and young-of-the-year lake trout associated with man-made structures. Hence, artificial reefs could make a significant contribution to restoration of lake trout stocks in the Great Lakes. It was not clear, however, why some man-made structures were used by lake trout and some were not. It is recommended, therefore, that construction of artificial reefs be approached on an experimental basis and that reef construction be part of an overall strategy to increase availability of spawning habitat. Also included in this strategy is stocking lake trout closer to areas of natural spawning substrate and resolving potential resource user conflicts. Studies should also be conducted to evaluate how life stage at stocking (e.g., egg, fry, yearling) affects subsequent use of spawning habitat and to determine if genetic factors are involved.

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Extended Residence of Young-of-the-Year Lake Trout in Shallow Water

Cited by 22 publications

References 0 publications

Use of cover habitat by bull trout, Salvelinus confluentus, and lake trout, Salvelinus namaycush, in a laboratory environment

Use of cover habitat by bull trout, Salvelinus confluentus, and lake trout, Salvelinus namaycush, in a laboratory environment

Heritage strain and diet of wild young of year and yearling lake trout in the main basin of Lake Huron

The significance of man-made structures for lake trout spawning in the Great Lakes: are they a viable alternative to natural reefs?

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