BECAS
LARES Betsabe AilÉn
artículos
Título:
Chlorpyrifos toxicity and detoxifying enzymes activities in three native-aquatic species of macroinvertebrates from an agricultural area
Autor/es:
LARES BETSABÉ AILÉN; DEL BRIO JOSEFINA ; PARRA-MORALES LAURA ; FERNÁNDEZ HUGO ; CRISTINA MÓNICA MONTAGNA
Revista:
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS.
Editorial:
ACAD BRASILEIRA DE CIENCIAS
Referencias:
Lugar: Rio de Janeiro; Año: 2023
ISSN:
0001-3765
Resumen:
Non-target species from agricultural areas might be exposed to sublethal pesticideconcentrations favoring survival and reproduction of the resistance individuals. Theobjective of this study was to evaluate chlorpyrifos toxicity and detoxificationenzymatic activities on three species (Hyalella curvispina, Heleobia parchappii andGirardia tigrina) from a drain channel with history of insecticide contamination (EF)and the Neuquén river (NR) in Argentina. Chlorpyrifos toxicity on amphipods (H.curvispina) and planarians (G. tigrina) from NR was about six- and two-fold higherthan that of their counterparts from EF. Mean carboxylesterases (CarE) activitiesdetermined in the three species from NR were significantly different from EF, whereasmean glutathione-S-transferase (GST) activities were no significantly different. Finally,planarians from EF showed significantly higher mean 7-ethoxycoumarine O-deethylase(ECOD) activity than those from NR. Amphipods from both sites displayed similarECOD activities. The present results suggest that chlorpyrifos resistance in amphipodsfrom EF is not conferred by increased detoxification.
