INSECTICIDAL ACTIVITY OF Vernonia fulta AGAINST Ceratitis capitata AND Tribolium castaneum

MAR¨ªA EUGENIA PELLEGRINO; SOSA ANDREA MABEL; SALVATORE ANAL¨ªA; GASTAMINZA GERARDO; BARDóN ALICIA DEL VALLE; BORKOSKY SUSANA ALICIA; CARTAGENA ELENA; VERA NANCY ROXANA

BIOCELL

IHEM-CONICET. Fac. de Cs Médicas -UNCuyo

Lugar: Mendoza; Año: 2014 vol. 38 p. 36 - 36

0327-9545

Manyplant extracts or allelochemicals from plants show a broad spectrum of activityagainst insect pests. Botanical insecticides have long been considered anattractive alternative to synthetic chemical pesticides for pest managementbecause they pose less threat to the environment or to human health and havelow toxicity for beneficial species. The objective of this study was toinvestigate the insecticidal potential of extracts (dichloromethanic, metanolicand petroleum ether) and exudates from the aerial parts of Vernonia Fulta (Asteraceae)on Ceratitis capitata, a citrus pest and Tribolium castaneum, astored grain pest. All extracts tested in C. capitata produced asignificant effect on oviposition deterrence, the exudate, the extract CH2Cl2 andsubextract CH2Cl2 being the most active, with inhibition rates of ovipositionof 37%, 33% and 29% respectively at 30 ìg/cm2. In trials with T. castaneum,it was observed that subextract CH2Cl2 and exudate at 250 ìg/g of diet showed apromising antifeedant and insect repellent effect. The tested extracts were nottoxic to T. castaneum, so they could be used safely in formulations forthe biological control of stored grain pests.