ILPLA   05424
INSTITUTO DE LIMNOLOGIA "DR. RAUL A. RINGUELET"
Unidad Ejecutora - UE
artículos
Título:
Effect of Aquatic Vegetation on the Persistence of Cypermethrin
Autor/es:
H. MUGNI; P. DEMETRIO; G. BULUS; A. RONCO; C. BONETTO
Revista:
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2011 vol. 86 p. 23 - 23
ISSN:
0007-4861
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 mesocosmswith 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. Hyalella curvispina was compared following an addition to laboratory mesocosmswith 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.