||Effects of selected herbicides on smolting of coho salmon /
Lorz, Harold W. ;
Glenn, Susan W. ;
Williams, Ronald H. ;
Kunkel, Clair M. ;
Norris, Logan A.
||Oregon Dept. of Fish and Wildlife, Corvallis. Research and Development Section.;Corvallis Environmental Research Lab., OR.
|| U.S. Corvallis Environmental Research Laboratory ; Available through National Technical Information Service,
Herbicides--Environmental aspects. ;
Fishes--Effect of water pollution on. ;
Coho salmon--Diseases. ;
Nitrogen organic compounds ;
Chlorine organic compounds ;
Lethal dosage ;
Animal behavior ;
Experimental data ;
Water balance ;
Bromine organic compounds
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||xi, 103 pages : illustrations ; 28 cm.
Static 96-h LC50 values for 12 water-soluble herbicides with yearling coho salmon in freshwater were: acrolein 68 micrograms/l; dinoseb 100 micrograms/l; picloram 5.0-17.5 mg/1; 2,4,5-T (triethylamine)> 10 mg/l; atrazine> 15 mg/l; diquat 30 mg/l; amitrole-T 70 mg/l; paraquat 76 mg/l; dicamba> 100 mg/l; and Krenite and 2,4-D (dimethylamine)>200 mg/l. Amitrole-T, diquat, and paraquat exposure in fresthwater reduced the survival of salmon smolth placed in seawater. Diquat also inhibited downstream migration of smolts. Under normal field use, acrolein and dinoseb could produce mortality of all life stages of salmonids if treated irrigation waters were released into streams prior to herbicide inactivation. The use of diquat at recommended treatment levels could reduce downstream migration of smolts and decrease survival in seawater. All other herbicide formulations tested appeared to have no effect on smolting of coho salmon.
Prepared by the Oregon Dept. of Fish and Wildlife, Research and Development Section for the U.S. Environmental Protection Agency, Office of Research and Development, Corvallis Environmental Research Laboratory under grant no. R-804283. Includes bibliographical references (pages 65-79). Microfiche.