Effects of Temperature on the (Na++ K+)-ATPase and Oxygen Consumption in Hepatocytes of Two Species of Freshwater Fish, Roach (Rutilus rutilus) and Brook Trout (Salvelinus fontinalis)

1992 ◽  
Vol 65 (4) ◽  
pp. 699-711 ◽  
Author(s):  
Pablo J. Schwarzbaum ◽  
Harald Niederstätter ◽  
Wolfgang Wieser
Keyword(s):  
Oxygen Consumption ◽  
Freshwater Fish ◽  
Brook Trout ◽  
Salvelinus Fontinalis ◽  
Rutilus Rutilus ◽  
Roach Rutilus Rutilus ◽  
Effects Of Temperature

Effects of temperature on brain tissue oxygen consumption in salmonid fishes

1969 ◽  
Vol 47 (6) ◽  
pp. 1345-1353 ◽  
Author(s):  
R. H. Peterson ◽  
J. M. Anderson
Keyword(s):  
Oxygen Consumption ◽  
Brain Tissue ◽  
Brook Trout ◽  
Brain Homogenate ◽  
Salmonid Fishes ◽  
Brain Tissue Oxygen ◽  
Sucrose Medium ◽  
Effects Of Temperature ◽  
Saline Medium ◽  
Tissue Oxygen Consumption

The oxygen consumption of brain tissue from Atlantic salmon and brook trout was determined at temperatures ranging from 6 °C to 30 °C for fish acclimated to 6° and 18 °C. In sucrose medium, oxygen consumption of brain homogenate was higher at all test temperatures for the 6 °C acclimated fish than for the 18 °C acclimated ones. Preparing brain tissue as a mince in saline medium markedly reduced the thermal acclimation effect. The latter preparation had much higher respiratory rates than did homogenate preparations. These differences were ascribed largely to an increase in ATPase activity in the ionic medium.

RESPIRATION OF FISHES WITH SPECIAL EMPHASIS ON STANDARD OXYGEN CONSUMPTION: IV. INFLUENCE OF CARBON DIOXIDE AND OXYGEN

1964 ◽  
Vol 42 (5) ◽  
pp. 847-856 ◽  
Author(s):  
F. W. H. Beamish
Keyword(s):  
Carbon Dioxide ◽  
Oxygen Consumption ◽  
Partial Pressure ◽  
Brook Trout ◽  
Salvelinus Fontinalis ◽  
Partial Pressure Of Oxygen ◽  
Partial Pressures ◽  
Rate Of Oxygen Consumption ◽  
Standard Rate ◽  
Different Levels

Oxygen consumption was determined in relation to spontaneous activity and standard metabolism estimated by extrapolating the values to zero activity, Standard oxygen consumption was determined in relation to different partial pressures of carbon dioxide and oxygen for brook trout. Salvelinus fontinalis (Mitchill), at 10 °C, and carp, Cyprinus carpio Linnaeus, at 25 °C. In general, at each partial pressure of oxygen applied, standard oxygen consumption did not change significantly over the range of partial pressures of carbon dioxide followed. The relation for brook trout operated on a level characteristic of the partial pressure of oxygen. Although the effect of different levels of oxygen was not established for carp at 25 °C, it is presumed that the relation operated also in that species in a similar way.Acclimation to the different levels of carbon dioxide and oxygen to be tested was examined and, ordinarily, found not to change significantly the standard rate of oxygen consumption.

Bacteriological Studies of Freshwater Fish: II. Furunculosis in Ontario Fish in Natural Waters

1962 ◽  
Vol 19 (6) ◽  
pp. 989-995 ◽  
Author(s):  
L. Rabb ◽  
L. A. McDermott
Keyword(s):  
Freshwater Fish ◽  
Brook Trout ◽  
Natural Waters ◽  
Salvelinus Fontinalis ◽  
Aeromonas Salmonicida ◽  
Southern Ontario ◽  
Cottus Bairdi ◽  
High Incidence ◽  
The One

During a period of 29 months, 1044 fish were taken from different sections of 10 streams in southern Ontario and examined for the presence of Aeromonas salmonicida, the bacterium causing furunculosis in fish. Most of the fish examined were brook trout (Salvelinus fontinalis), and carriers of furunculosis were, with one exception, found only in this species of fish. The one exception was a sculpin (Cottus bairdi). Most of the brook trout found to be carriers were taken from the same section of the Beaver River. As yet, no explanation can be given of the high incidence of furunculosis carriers in these waters, nor is their importance known.

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

1972 ◽  
Vol 29 (8) ◽  
pp. 1107-1112 ◽  
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.

Effects of temperature fluctuations and photoperiod on hatching in the parasitic copepod Salmincola edwardsii

1990 ◽  
Vol 68 (6) ◽  
pp. 1330-1332 ◽  
Author(s):  
Robert Poulin ◽  
David C. Conley ◽  
Mark A. Curtis
Keyword(s):  
Brook Trout ◽  
Laboratory Experiments ◽  
Salvelinus Fontinalis ◽  
Temperature Fluctuations ◽  
Parasitic Copepod ◽  
The Other ◽  
Hatching Rate ◽  
Experimental Conditions ◽  
Effects Of Temperature ◽  
Daily Changes

In laboratory experiments, we studied the effects of the day–night cycle (photoperiod and temperature fluctuations) on the initiation of hatching and hatching rate in egg sacs of the copepod Salmincola edwardsii, ectoparasitic on brook trout (Salvelinus fontinalis). Pairs of egg sacs were removed from adult female copepods; for each pair, one sac was placed under experimental conditions and the other one was kept under constant conditions, providing an ideal control. Photoperiod had no significant effect on the initiation of hatching or hatching rate. The observed effects of temperature fluctuations were associated with water temperature itself, and appeared independent of whether it was fluctuating or constant. We conclude that hatching in S. edwardsii is not rhythmical but spontaneous, showing no relationship with daily changes in host vulnerability.

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