Syngenta > News Releases > Syngenta responds to USGS study: Results of extensive long-term studies demonstrate the safety of atrazine to fish populations

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Syngenta responds to USGS study: Results of extensive long-term studies demonstrate the safety of atrazine to fish populations

5/20/2010

Investigations of the risk of atrazine on fish reproduction, as called for by Tillitt et al. (2010) in a USGS report, have already been conducted in multiple multi-generational tests. The results of these extensive long-term studies demonstrate the safety of atrazine to fish populations. The results reported by Tillitt are inconsistent with the results of four full life-cycle fish studies which report no effects on reproduction, two of which were for the same species (fathead minnow) of fish. These four studies were conducted using a standard protocol, reviewed and accepted by the U.S. EPA.

In addition, other studies conducted report no effect on fish. A U.S. EPA (2005) study was conducted using methods similar to those of Bringolf et al. (2004) and Tillitt. Results indicate that atrazine exposure to levels as high as 223 milligrams per liter (the highest concentration tested) had no effect on reproduction.

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Media contacts:

Sherry Duvall Ford
Syngenta Crop Protection
336-632-6107 or sherry.ford@syngenta.com

Steven Goldsmith
Syngenta Crop Protection
336-632-2517 or steven.goldsmith@syngenta.com