3 pesticides singled out in report as threat to salmon From Los Angeles to the Canadian border, three pesticides synthesized in the 1950s and '60s are increasing the chance of extinction for more than two dozen imperiled salmon stocks, says a draft study by federal fisheries experts. "Overwhelming evidence" suggests the pesticides are interfering with the ability of salmon to swim, find food, reproduce and escape bigger fish trying to eat them, says the evaluation issued by the National Marine Fisheries Service. The report came in response to a suit filed by environmentalists in federal court in Seattle, where U.S. District Judge John Coughenour ordered the Fisheries Service to conduct the study. It is intended as advice to the Environmental Protection Agency, which governs use of pesticides. EPA has long allowed use of the pesticides in what the fisheries service now says are applications dangerous to fish. The fish scientists will soon review 34 other, newer pesticides to see how they affect salmon as part of a settlement with environmental groups....