Artículos de revistas
Effect of Aquatic Vegetation on the Persistence of Cypermethrin Toxicity in Water
Fecha
2010-11Registro en:
Mugni, Hernan Diego; Demetrio, Pablo Martin; Bulus Rossini, Gustavo Daniel; Ronco, Alicia Estela; Bonetto, Carlos Alberto; Effect of Aquatic Vegetation on the Persistence of Cypermethrin Toxicity in Water; Springer; Bulletin of Environmental Contamination and Toxicology; 86; 1; 11-2010; 23-27
0007-4861
1432-0800
CONICET Digital
CONICET
Autor
Mugni, Hernan Diego
Demetrio, Pablo Martin
Bulus Rossini, Gustavo Daniel
Ronco, Alicia Estela
Bonetto, Carlos Alberto
Resumen
Soybean production in Argentina comprises 15 million ha. Cypermethrin is the main insecticide applied amounting 150 g of active ingredient per hectare, thus representing roughly 2.3 thousand tons yearly released to the environment. Toxicity pulses have been observed in small streams draining agricultural basins, most of them sustaining macrophyte growth. Cypermethrin concentrations and its toxicity to the amphipod Hyalella curvispina was compared following an addition to laboratory mesocosms with and without a vegetation cover of the floating macrophyte Lemna sp. Both concentrations and toxicity decreased faster in the treatments covered with Lemna. Fast adsorption of the hydrophobic pesticide to the roots and fronds of Lemna was suggested.