Özet:

Herbicides can pose a serious hazard to aquatic organisms and human health. Herbicides prepared as a mixture formulation may have much more toxic effects, but there are few studies in the literature showing the toxicities of these herbicides. In our study, the toxic effects of different concentrations (0.25, 0.5 and 1 ppm) of mixed herbicides (Halauxifen methyl+Pyroxsulam+Cloquintocet acid), which have been used extensively in the market in recent years, on zebrafish embryos and larvae were evaluated with developmental parameters and behavioral tests. Embryos and larvae exposed to the mixed herbicides for 96 hours had reduced survival and delayed exit from the chorion, especially at the highest application concentration (1 ppm). Various malformations were observed in embryos and larvae with the effect of mixed herbicides. In addition, it was determined that the total distance covered by zebrafish larvae at 96th hour increased and hyperactivity occurred at 1 ppm concentration of the mixed herbicide. Our study provides important data in terms of understanding the toxic effects of mixed chemicals on aquatic organisms. As a result, more and more detailed studies are required since chemicals (herbicides, insecticides, fungicides or heavy metals) found as a mixture in the aquatic ecosystem are considered to be a threat to aquatic organisms.

Anahtar Kelimeler: