||Effects of temperature on diseases of salmonid fishes /
Fryer, John L., ;
Fryer, J. L. ;
Pilcher., K. S.
||Oregon State Univ., Corvallis. Dept. of Microbiology.
|| Office of Research and Development, U.S. Environmental Protection Agency, For sale by the Superintendent of Documents, U.S. Government Printing Office
Thermal pollution of rivers, lakes, etc. ;
Trout--Diseases and pests. ;
Salmonidae--Diseases and pests. ;
Fishes--Effect of water pollution on. ;
Salmon--Diseases and pests.
Infectious diseases ;
Experimental data ;
Animal diseases ;
Thermal pollution ;
Water pollution effects(Animals) ;
Chondrococcus columnaris ;
Aeromonas salmonicida ;
Aeromonas liquefaciens ;
||Region 3 Library/Philadelphia, PA
||OASQA Library/Fort Meade,MD
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||viii, 114 pages : illustrations ; 27 cm.
The effect of water temperature on infections of salmonid fish was investigated. Chondrococcus columnaris infection was studied in rainbow trout, coho and spring chinook salmon, Aeromonas salmonicida infection in coho and spring chinook salmon; and Aeromonas liquefaciens infection in steelhead trout. In all cases mortality rates were high at 64 to 69F; moderate at 54 to 59F; and low or zero at 39 to 49F. Progress of the infections was accelerated at higher temperatures, and progressively retarded at decreasing temperature levels. In infection of coho with Ceratomyxa shasta, mortality was high at 69F, low at 49 to 54F, and zero at 39 to 44F. This infection in rainbow trout resulted in high mortality at all temperatures except 39F. In both cases the course of the disease was most rapid at higher temperatures, and became progressively slower as the temperature decreased. For infection of kokanee salmon fingerlings with sockeye salmon virus, the temperature range of 54 to 59F was optimal.
"January 1974." "Project officer, Dr. Gerald R. Bouck, Western Fish Toxicology Laboratory." U.S. G.P.O. sales statement incorrect in publication. Includes bibliographical references (pages 91-92). Prepared for Office of Research and Development, U.S. Environmental Protection Agency