scholarly journals Plasma and Tissue Levels of Trimethoprim in The Rainbow Trout, Salmo Gairdneri, After Absorption From Fresh and Salt Water

1980 ◽  
Vol 21 (1) ◽  
pp. 18-25
Author(s):  
Torill Bergsjø ◽  
Erling Søgnen
Keyword(s):  
Rainbow Trout ◽  
Salt Water ◽  
Salmo Gairdneri ◽  
Tissue Levels

The Effects of Chronic Cyanide Poisoning on the Tolerance of Rainbow Trout to Varying Salinity

1975 ◽  
Vol 10 (1) ◽  
pp. 118-125 ◽  
Author(s):  
Gérard Leduc ◽  
Kenneth K.S. Chan
Keyword(s):  
Rainbow Trout ◽  
Blood Plasma ◽  
Fresh Water ◽  
Salt Water ◽  
Plasma Osmolality ◽  
Exposure Period ◽  
Chloride Ions ◽  
Salmo Gairdneri ◽  
Cyanide Poisoning ◽  
Flow Through

Abstract The effects of cyanide on iono- and osmoregulation are soon established and last long after the period of exposure to the toxicant is over. The effects are of the order of 4 to 8 percent changes in blood plasma osmolality and chloride ions, changes which are indicative of serious physiological impairment, having costly energetic implications. The deleterious effects of cyanide were detected at concentrations as low as 0.01 mg/l HCN in water of pH 7.5. Juvenile rainbow trout, Salmo gairdneri, were first exposed to various concentrations of cyanide ranging from 0.01 to 0.037 mg/1 HCN for 28 days in fresh water in flow-through aquaria at 10?C. After this exposure period the fish together with untreated fresh water controls were transferred into 18.9 ppt salt water for 260 hours during which blood plasma osmolality and chloride were monitored. By the end of the salinity tolerance tests the poisoned fish had experienced greater loss of water than the controls but no change of chloride were observed. Upon return to fresh water for 100 hours all the fish lost chloride ions, the effect being much greater in the cyanide exposed fish. When the fish were first adapted to salt water then transferred to fresh water cyanide they also experienced loss of chloride and dilution of plasma greater than the controls did.

Temperature Selection of Rainbow Trout (Salmo gairdneri) Fingerlings in Vertical and Horizontal Gradients

1971 ◽  
Vol 28 (11) ◽  
pp. 1801-1804 ◽  
Author(s):  
R. W. McCauley ◽  
W. L. Pond
Keyword(s):  
Rainbow Trout ◽  
Salmo Gairdneri ◽  
Temperature Preference ◽  
Temperature Selection ◽  
Horizontal Gradients ◽  
Significant Difference ◽  
Preferred Temperatures ◽  
Laboratory Investigations ◽  
Horizontal Temperature Gradients ◽  
Selection Of

Preferred temperatures of underyearling rainbow trout (Salmo gairdneri) were determined in both vertical and horizontal temperature gradients. No statistically significant difference was found between the preferred temperatures by the two different methods. This suggests that the nature of the gradient plays a lesser role than generally believed in laboratory investigations of temperature preference.

scholarly journals The Distribution of 35S-Sulfadiazine and 14G-Trimethoprim in Rainbow Trout, Salmo Gairdneri

1979 ◽  
Vol 20 (1) ◽  
pp. 25-37 ◽  
Author(s):  
Torill Bergsjø ◽  
Inger Nafstad ◽  
Kristian Ingebrigtsen
Keyword(s):  
Rainbow Trout ◽  
Salmo Gairdneri
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