scholarly journals ELECTROPHORETIC VARIATION IN FOUR FRENCH POPULATIONS OF DOMESTICATED RAINBOW TROUT (SALMO GAIRDNERI)

1981 ◽  
Vol 23 (1) ◽  
pp. 33-47 ◽  
Author(s):  
René Guyomard
Keyword(s):  
Rainbow Trout ◽  
Genetic Differentiation ◽  
Salmo Gairdneri ◽  
Electrophoretic Variation ◽  
Significant Genetic Differentiation ◽  
Biochemical Polymorphism ◽  
Preliminary Results ◽  
Enzyme Systems

Electrophoretic variation of 12 enzyme systems, representing 26 loci in four strains of domesticated rainbow trout (Salmo gairdneri Richardson) were studied. The variances among and within strains, estimated from observed frequencies, were compared to data of other studies of biochemical polymorphism carried out in this species. These preliminary results show that a large proportion of the variability in rainbow trout is present in the French hatchery stocks studied and that isolation of these groups for several generations has not caused a significant genetic differentiation as compared to all the domesticated strains studied.

ELECTROPHORETIC VARIATION AND DIFFERENTIATION IN FOUR STRAINS OF DOMESTICATED RAINBOW TROUT (SALMO GAIRDNERI)

1979 ◽  
Vol 21 (1) ◽  
pp. 81-94 ◽  
Author(s):  
Craig A. Busack ◽  
Richard Halliburton ◽  
G. A. E. Gall
Keyword(s):  
Rainbow Trout ◽  
Genetic Variability ◽  
Genetic Differentiation ◽  
Balancing Selection ◽  
Genetic Distances ◽  
Salmo Gairdneri ◽  
Wild Populations ◽  
Electrophoretic Variation ◽  
High Level

A total of 1462 rainbow trout (Salmo gairdneri Richardson) representing four California domestic strains, were examined electrophoretically at 24 gene loci to investigate the amount of genetic variability within strains and genetic differentiation between strains, relative to wild populations. Estimated heterozygosities of 0.071 to 0.134 were similar to those reported for wild populations and thus indicated that the domestic strains were at least as variable as wild populations. Genetic distances between strains ranged from 0.011 to 0.067, values typical of the level of differentiation observed between local conspecific populations in a variety of organisms. It was suggested that this high level of heterozygosity is due to mixing of populations in the strains' histories and perhaps also to balancing selection.

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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