Survival of Hatchery-Reared Rainbow Trout (Salmo gairdneri) in Relation to Stamina Tunnel Ratings

1972 ◽  
Vol 29 (7) ◽  
pp. 1005-1009 ◽  
Author(s):  
Donald L. Horak
Keyword(s):  
Rainbow Trout ◽  
Conclusive Evidence ◽  
Salmo Gairdneri ◽  
Swimming Ability ◽  
In The Wild ◽  
Lotic Environments ◽  
Survival Potential

No conclusive evidence was found in tests from 1966 to 1969 in either lentic or lotic environments to support the hypothesis that hatchery-reared rainbow trout (Salmo gairdneri) with a high-stamina index had a higher survival potential than those whose stamina index was low. Physical stamina was measured by determining the length of time each fish could withstand sustained swimming in a specially constructed stamina tunnel. For high-stamina rating, fish swam in the tunnel for 80 min; for low stamina, 1–10 min.In tests of reproducibility of stamina ratings, improved swimming ability of low-stamina fish was demonstrated upon retesting in the tunnel. In 1970, with retested fish, still no evidence was found to indicate higher survival of fish rated as high in stamina. Additional studies are needed to determine if performance of hatchery-reared salmonids in a stamina tunnel is a valid indicator of their survival potential in the wild.

Differences in Swimming Performance Among Strains of Rainbow Trout (Salmo gairdneri)

1977 ◽  
Vol 34 (2) ◽  
pp. 304-307 ◽  
Author(s):  
Allan E. Thomas ◽  
Michael J. Donahoo
Keyword(s):  
Growth Rate ◽  
Rainbow Trout ◽  
New Zealand ◽  
Swimming Performance ◽  
Salmo Gairdneri ◽  
Swimming Ability ◽  
Fish Swimming ◽  
Fish Size ◽  
Swimming Time ◽  
Performance Profiles

Swimming performance profiles, relating fish size to swimming time, were established for three strains of rainbow trout (Salmo gairdneri). No differences were found in slope of regressions; only in level at each size of fish. Swimming performances of New Zealand and Sand Creek strains did not differ, but were superior to the Manchester strain. In stamina results from 189-day-old fish from individual matings of seven strains and various crosses, similar strains and crosses had closely matching profiles whereas profiles of unrelated groups were variable. Comparison of slowest, average, and fastest growing fish within the New Zealand strain showed that swimming ability was not related to growth rate.

Growth, Training and Swimming Ability of Young Trout (Salmo Gairdneri R.) Maintained Under Different Salinity Conditions

1982 ◽  
Vol 62 (3) ◽  
pp. 699-708 ◽  
Author(s):  
R. Nahhas ◽  
N. V. Jones ◽  
G. Goldspink
Keyword(s):  
Rainbow Trout ◽  
Fresh Water ◽  
Water Scarcity ◽  
Brackish Water ◽  
Salmo Gairdneri ◽  
Swimming Ability ◽  
The World

The growing interest in farming rainbow trout in the sea (MacLeod, 1977) or in brackish water (Tatum, 1973, 1976) is economically important because it involves the use of readily available sites and resources, and provides solutions to problems related to fresh water scarcity or its increased salinity (Al-Hamed, 1971; Al-Daham & Bhatti, 1977) in certain parts of the world.

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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