Induction of glutathione S-transferase activity in Triatoma infestans

Several synthetic pesticides and allelochemicals used to treat Triatoma infestans adults by topic application showed some degree to cytosolic glutathione S-transferase (GST) induction. General inducers of detoxication systems such as phenobarbital and 3-methylcholantrene topically applied on T. infestans resulted in no GST induction. Meanwhile, general insecticide synergist such as piperonyl butoxide (160 µg/insect) increased the GST-activity in the range of 120-140 per cent. Insects injected with reduced glutathione (300 mg/insect) presented at the forth day elevated GST activity.

Embriogénesis y acción ovicida en Triatoma infestans / Embriogenesis and ovicidal action in Triatoma infestans

Se estudia la embriogénesis del Triatoma infestans y la acción ovicida de insecticidas en sus huevos. Se analizan: las distintas etapas del desarrollo embrionario y de la ontogénesis de insectos; la acción ovicida de insecticidas durante la embriogénesis; la causa de muerte del embrión de Triatoma infestans tratado con compuestos organofosforados; y, los factores que afectan la potencia ovicida de insecticidas de contacto y formulados