The Effect of Temperature and Starvation on the Clearance of Bacteria From the Bloodstream of Rainbow Trout (Salmo gairdneri Richardson)

1984 ◽  
Vol 35 (2) ◽  
pp. 209-216 ◽  
Author(s):  
H.W. Ferguson ◽  
M.J. Claxton ◽  
J. Lesperance
Keyword(s):  
Rainbow Trout ◽  
Effect Of Temperature ◽  
Salmo Gairdneri

Effect of Temperature on Accumulation of Methylmercuric Chloride and p,p′DDT by Rainbow Trout (Salmo gairdneri)

1974 ◽  
Vol 31 (10) ◽  
pp. 1649-1652 ◽  
Author(s):  
Robert E. Reinert ◽  
Linda J. Stone ◽  
Wayne A. Willford
Keyword(s):  
Rainbow Trout ◽  
Water Temperature ◽  
Effect Of Temperature ◽  
Salmo Gairdneri ◽  
Methylmercuric Chloride ◽  
Concentration Factors

Amounts of mercury and DDT residues accumulated from water by yearling rainbow trout (Salmo gairdneri) in the laboratory increased as water temperature increased. Fish exposed to methylmercuric chloride at concentrations of 234–263 parts per trillion for 12 wk at 5, 10, and 15 C accumulated 1.19, 1.71, and 1.96 ppm; fish exposed to p,p′DDT at concentrations of 133–176 parts per trillion accumulated 3.76, 5.93, and 6.82 ppm. Concentrations of mercury accumulated by the fish were significantly different (P < 0.01) at each of the three temperatures, and the concentrations of DDT were significantly different at 5 and 10 and 5 and 15 C. Throughout the period of exposure, the concentration factors (concentration of contaminant in the fish/concentration in water) at each of the three temperatures were far higher for p,p′DDT than for methylmercuric chloride.

THE EFFECT OF TEMPERATURE AND PHOTOPERIOD ON THE RESPIRATORY METABOLISM OF RAINBOW TROUT (SALMO GAIRDNERI)

1962 ◽  
Vol 40 (1) ◽  
pp. 107-118 ◽  
Author(s):  
R. M. Evans ◽  
F. C. Purdie ◽  
C. P. Hickman Jr.
Keyword(s):  
Oxygen Consumption ◽  
Rainbow Trout ◽  
Locomotor Activity ◽  
Temperature Compensation ◽  
Large Degree ◽  
Effect Of Temperature ◽  
Salmo Gairdneri ◽  
Respiratory Metabolism ◽  
Metabolic Rates ◽  
Metabolic Compensation

Mid-winter spawning rainbow trout (Salmo gairdneri) were acclimated for a minimum of 43 days to one of four temperature–photoperiod conditions: 16 °C–16L (hours daily photoperiod), 16 °C–8L, 8 °C–16L, 8 °C–8L. Oxygen consumption of the intact fish and of samples of liver, gill, and brain were measured at acclimation temperature.Brain showed complete metabolic compensation to temperature ([Formula: see text] at [Formula: see text] at 16 °C) and liver showed overcompensation ([Formula: see text] at [Formula: see text] at 16 °C). No compensation occurred in gill respiration. Total respiration showed partial temperature compensation. It is suggested that complete compensation in brain would maintain nervous co-ordination and motor conduction at optimal levels, thus permitting a large degree of temperature independence of locomotor activity.[Formula: see text] values of the tissue showed a trend for the 8L tissues to metabolize more rapidly than the 16L group, except for gill at 16 °C. Photoperiod did not significantly affect total metabolic rates, but in the larger fish (> 40 g) at 16 °C, the 8L group tended to show a higher metabolic rate than the 16L group.

EFFECT OF TEMPERATURE AND PHOTOPERIOD ON THE SERUM PROTEINS OF THE RAINBOW TROUT, SALMO GAIRDNERI

1962 ◽  
Vol 40 (2) ◽  
pp. 127-130 ◽  
Author(s):  
Herman M. Meisner ◽  
C. P. Hickman Jr.
Keyword(s):  
Rainbow Trout ◽  
Serum Protein ◽  
Serum Proteins ◽  
Protein Pattern ◽  
Paper Electrophoresis ◽  
Effect Of Temperature ◽  
Salmo Gairdneri

The serum of 1- and 2-year-old rainbow trout, acclimated at least 43 days to four conditions of temperature and daylength (16°–8L (hours daily photoperiod), 16°–16L, 8°–8L, and 8°–16L) was examined by paper electrophoresis. The albumin/globulin ratio was significantly greater in trout acclimated to 8 °C (pooled photoperiod) than in those acclimated to 16 °C (pooled photoperiod). Photoperiod had no significant effect on the serum protein pattern.

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