Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Effect of Water Quality and Environmental Factors on Freshwater Fish.
Author Whitfor, Walter G. ;
CORP Author New Mexico State Univ., University Park. Water Resources Research Inst.
Year Published 1970
Report Number OWRR-A-003-NMEX; 04677,; A-003-NMEX(1)
Stock Number PB-197 676
Additional Subjects ( Fresh water fishes ; Water quality) ; ( Ecology ; Fresh water fishes) ; Fishes ; Fresh water biology ; Water pollution ; Water ; Temperature ; pH ; Aquatic animals ; Rivers ; Acclimatization ; Tolerances(Physiology) ; Oxygen ; Oxygen consumption ; Heat tolerance ; Thermal pollution ; Water pollution effects(Animals)
Library Call Number Additional Info Location Last
NTIS  PB-197 676 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 7p
Water temperatures of Rio Grande River ranged from 0C to 29C, pH ranged from 7.4 to 8.6, total hardness varied from 86 ppm in the upper river to 194 plus or minus 6 ppm in the reservoirs. The mean critical thermal maximum (CTM) was 39.9C in fish acclimated in fresh water (10-30 ppm), 28.2C in fish acclimated in water at 85 ppm, 27.3C in fish acclimated at 171 ppm. Ion concentration of 180 ppm and 25 ppm has no effect on the CTM of the mosquito, fish, Gambusia offinis. The effect of water hardness on upper lethal temperature of the green sunfish Lepomis cyanellus acclimated at 20C and 30C and hardness levels of 30, 180, and 400 ppm indicated no significant effect of hardness on the incipient lethal temperature 35C for 20C acclimation and 40C for 30C acclimation. The relationship between incipient lethal temperature and acclimation is expressed by the equation, Log (LD50) = 1.322 + .0056 (CTM in degree C). Incipient lethal of 31C for 10C acclimated fish was obtained. There was no difference in the critical oxygen tension in active fish and nonactive fish. At 20C acclimation the mean oxygen consumption was 0.177 ml/gm/hr. (WRSIC abstract)