Reduced thermal tolerance during salinity acclimation in brook trout (
            Salvelinus fontinalis
            ) can be rescued by prior treatment with cortisol

Juvenile and young adult bloaters (Coregonus hoyi) were tested for tolerance to high temperatures. The ultimate upper lethal temperature of juvenile bloaters (26.75 C) appeared to be slightly higher than that of young adult bloaters, but was similar to that of juvenile ciscoes, Coregonus artedii (26.0 C), the only other North American coregonine for which a detailed description of temperature tolerance has been published.Regression equations are given that permit estimation of the thermal tolerance when the lethal temperatures are incompletely known. The estimated thermal tolerance of juvenile bloaters (617 units) was slightly less than that of the brook trout (Salvelinus fontinalis; 625 units), but was higher than that of other Salmonidae.

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Intraspecific Variation in Thermal Tolerance and Acclimation Capacity in Brook Trout (Salvelinus fontinalis): Physiological Implications for Climate Change

Physiological and Biochemical Zoology ◽

10.1086/675259 ◽

2014 ◽

Vol 87 (1) ◽

pp. 15-29 ◽

Cited By ~ 46

Author(s):

Bradley C. Stitt ◽

Gary Burness ◽

Kirsten A. Burgomaster ◽

Suzanne Currie ◽

Jenni L. McDermid ◽

...

Keyword(s):

Climate Change ◽

Intraspecific Variation ◽

Thermal Tolerance ◽

Brook Trout ◽

Salvelinus Fontinalis

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Effects of Temperature on Growth and Survival of Young Brook Trout, Salvelinus fontinalis

Journal of the Fisheries Research Board of Canada ◽

10.1139/f72-165 ◽

1972 ◽

Vol 29 (8) ◽

pp. 1107-1112 ◽

Cited By ~ 62

Author(s):

J. Howard McCormick ◽

Kenneth E. F. Hokanson ◽

Bernard R. Jones

Keyword(s):

Thermal Tolerance ◽

Brook Trout ◽

Salvelinus Fontinalis ◽

Mortality Rates ◽

Temperature Tolerance ◽

Tolerance Limits ◽

Growth And Survival ◽

Effects Of Temperature ◽

Rates Of Growth ◽

Upper Thermal Tolerance

Instantaneous rates of growth, mortality, and net biomass gain were determined for alevin through juvenile brook trout reared for 8 weeks at six constant temperatures: 7.1, 9.8, 12.4, 15.4, 17.9, and 19.5 C. Growth rates were maximum between 12.4 and 15.4 C. Mortality rates increased between 15.4 and 17.9 C and were maximum between 17.9 and 19.5 C. The net rates of biomass gain were maximum between 12.4 and 15.4 C.Median upper thermal tolerance limits (TL50 values) were determined for newly hatched and swim-up alevins. Tolerance did not increase in newly hatched alevins with acclimation to temperatures from 2.5 to 12 C. The upper 7-day TL50 for newly hatched alevins acclimated over this range of temperatures was 20.1 C. The swim-up alevins showed both an increase in temperature tolerance with acclimation temperatures between 7.5 and 12 C and an increase in tolerance over that of the newly hatched alevins at comparable acclimation temperatures. The ultimate 7-day TL50 of swim-up alevins was 24.5 C. Swim-up alevins exceed newly hatched alevins in thermal tolerance by 2.0–4.5 C, depending on the temperature of acclimation. The TL50 of newly hatched alevins of comparable acclimation (12 C) is reduced by about 2 C when the exposure time is increased from 1 to 7 days.

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Exotic “Gill Lice” Species (Copepoda: Lernaeopodidae:SalmincolaSPP.) Infect Rainbow Trout (Oncorhynchus mykiss) and Brook Trout (Salvelinus fontinalis) in the Southeastern United States

Journal of Parasitology ◽

10.1645/16-165 ◽

2017 ◽

Vol 103 (4) ◽

pp. 377-389 ◽

Cited By ~ 8

Author(s):

Carlos F. Ruiz ◽

Jacob M. Rash ◽

Doug A. Besler ◽

Jackson R. Roberts ◽

Micah B. Warren ◽

...

Keyword(s):

United States ◽

Rainbow Trout ◽

Oncorhynchus Mykiss ◽

Brook Trout ◽

Salvelinus Fontinalis ◽

Southeastern United States ◽

Rainbow Trout Oncorhynchus Mykiss

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Parasite-induced susceptibility to predation in diplostomiasis

Parasitology ◽

10.1017/s0031182000056274 ◽

1982 ◽

Vol 85 (3) ◽

pp. 495-501 ◽

Cited By ~ 54

Author(s):

P. Brassard ◽

M. E. Rau ◽

M. A. Curtis

Keyword(s):

Brook Trout ◽

Salvelinus Fontinalis ◽

Marked Decrease ◽

Infected Fish ◽

Induced Susceptibility ◽

Diplostomum Spathaceum

Guppies (Lebistes reticulatis) exposed to doses as low as 25 cercariae of Diplostomum spathaceum for 30 min were consistently and significantly more susceptible to predation by brook trout (Salvelinus fontinalis) than uninfected controls. The increase in susceptibility to predation was correlated with a marked decrease in the activity of infected fish.

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Brook trout passage performance through culverts

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/cjfas-2015-0089 ◽

2016 ◽

Vol 73 (1) ◽

pp. 94-104 ◽

Cited By ~ 18

Author(s):

Elsa Goerig ◽

Theodore Castro-Santos ◽

Normand Émile Bergeron

Keyword(s):

Brook Trout ◽

Salvelinus Fontinalis ◽

Structural Characteristics ◽

Passive Integrated Transponder ◽

Complex Interactions ◽

Factors Influencing ◽

Several Variables ◽

And Behavior ◽

Steep Slopes ◽

Corrugated Metal

Culverts can restrict access to habitat for stream-dwelling fishes. We used passive integrated transponder telemetry to quantify passage performance of >1000 wild brook trout (Salvelinus fontinalis) attempting to pass 13 culverts in Quebec under a range of hydraulic and environmental conditions. Several variables influenced passage success, including complex interactions between physiology and behavior, hydraulics, and structural characteristics. The probability of successful passage was greater through corrugated metal culverts than through smooth ones, particularly among smaller fish. Trout were also more likely to pass at warmer temperatures, but this effect diminished above 15 °C. Passage was impeded at higher flows, through culverts with steep slopes, and those with deep downstream pools. This study provides insight on factors influencing brook trout capacity to pass culverts as well as a model to estimate passage success under various conditions, with an improved resolution and accuracy over existing approaches. It also presents methods that could be used to investigate passage success of other species, with implications for connectivity of the riverscape.

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Food Specialization By Individual Trout

Journal of the Fisheries Research Board of Canada ◽

10.1139/f72-248 ◽

1972 ◽

Vol 29 (11) ◽

pp. 1615-1624 ◽

Cited By ~ 91

Author(s):

James E. Bryan ◽

P. A. Larkin

Keyword(s):

Rainbow Trout ◽

Brook Trout ◽

Salvelinus Fontinalis ◽

Stomach Contents ◽

Cutthroat Trout ◽

Salmo Gairdneri ◽

Potential Prey ◽

Repeated Observation ◽

Size Growth ◽

Salmo Clarki

Analyses of stomach contents showed that the kinds of prey eaten by brook trout (Salvelinus fontinalis), cutthroat trout (Salmo clarki), and rainbow trout (Salmo gairdneri) were seldom distributed at random among the individuals. Repeated observation of food eaten by individuals in a stream and ponds showed that prey types were eaten in proportions which were characteristic for an individual.Specialization occurred on several different kinds of prey. Although the degree of specialization was higher during shorter intervals, the data suggested that some specialization persisted for half a year. There were no striking correlations between degree of specialization and other individual properties such as size, growth rate, weight of food, number of food items, previous specialization, or area of recapture.In addition to the observations on trout in relatively undisturbed habitats, a field experiment was conducted using laboratory-reared rainbow trout held in small ponds. The food of each trout in the experiment was sampled repeatedly. In analysis of variance, interaction among the individuals and kinds of prey eaten showed that food specialization occurred. Both the absolute and relative abundance of potential prey were constant during the experiment.

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