Research and analysis

The effect of atrazine exposure on the timing of salmon smolt emigration

This study examined the impact of atrazine on smoltification and in particular the potential effects on the run-timing of hatchery reared smolts.

Document

The Effect of Atrazine Exposure on the Timing of Salmon (Salmo salar L.) Smolt Emigration

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Detail

Exposure of Atlantic salmon (Salmo salar L.) to sub-lethal concentrations of pesticides has been shown to have significant effects on their reproductive and migratory physiology. One such pesticide is atrazine (2-chloro-4-ethylamino-6-isopropoylamino-s-triazine ), that is commonly used as a herbicide for the control of annual and perennial grass and broad-leaved weeds. In 1992 and 1993 this pesticide was found to be one of the most commonly occuring herbicides in ground and surface waters.