Effects of synthetic pyrethroid insecticides on nontarget organisms.

Abstract

The use of pyrethroid insecticides at recommended rates of application have no deleterious long-term effects on microorganisms or microbial processes. Aquatic invertebrates are the most susceptible organisms to pyrethroids. Selected groups, most noticeably mayflies, may be drastically affected for entire season; others experience only short-term reductions in numbers. Low levels of pyrethroids also cause invertebrate drift and other behavioral changes. Selected nontarget terrestrial invertebrates are also susceptible to pyrethroid insecticides.-from Authors