Reproductive biology of trout in a thermally enriched environment: the Firehole River of Yellowstone National Park. Third annual progress report, July 1, 1976--December 31, 1977
Technical Report
·
OSTI ID:6622896
Resistance times to lethal high temperatures were determined for rainbow trout fingerlings and juveniles from the Firehole River and from two hatchery strains, Ennis and Winthrop, after acclimation to 5, 9, 13, 17, and 21, and 24.5/sup 0/C. Median resistance times and upper incipient lethal temperatures were similar between Firehole and hatchery fish acclimated to 24.5/sup 0/C. Median resistance times were also similar between Firehole and hatchery fish acclimated to 21/sup 0/C, but the Firehole trout a slightly higher upper incipient lethal temperature (26.25 vs. 25.75/sup 0/C). At each of the intermediate and lower acclimation temperatures of 5, 9, 13, and 17/sup 0/C, the Firehole trout had longer median resistance times and slightly higher upper incipient lethal temperatures. The ultimate upper incipient lethal temperature for all trout tested--Firehole fingerlings, Firehole juveniles, Ennis fingerlings, Winthrop juveniles--was about 26.25/sup 0/C. The results do not support the hypothesis that rainbow trout inhibiting and reproducing in the heated waters of the lower Firehole River have developed greater tolerance to warm temperatures.
- Research Organization:
- Montana State Univ., Bozeman (USA). Dept. of Biology
- OSTI ID:
- 6622896
- Report Number(s):
- RLO-2228-T2-3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
520400 -- Environment
Aquatic-- Thermal Effluents Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560205* -- Thermal Effects-- Vertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ECOSYSTEMS
AQUATIC ORGANISMS
BIOLOGICAL ADAPTATION
ECOSYSTEMS
FISHES
JUVENILES
PUBLIC LANDS
REPRODUCTION
TEMPERATURE EFFECTS
THERMAL WATERS
TROUT
VERTEBRATES
YELLOWSTONE NATIONAL PARK
Aquatic-- Thermal Effluents Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560205* -- Thermal Effects-- Vertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ECOSYSTEMS
AQUATIC ORGANISMS
BIOLOGICAL ADAPTATION
ECOSYSTEMS
FISHES
JUVENILES
PUBLIC LANDS
REPRODUCTION
TEMPERATURE EFFECTS
THERMAL WATERS
TROUT
VERTEBRATES
YELLOWSTONE NATIONAL PARK