BECAS
WAGNER Leandro Sebastian
congresos y reuniones científicas
Título:
REPELLENT AND ANTIFEEDANT PROPERTIES OF CRUDE EXTRACTS AGAINST EPICAUTA (COLEOPTERA: MELOIDAE).
Autor/es:
FERNÁNDEZ ESTRELLA; SEQUIN CHRISTIAN; CAMPOS-SOLDINI PAULA; WAGNER LEANDRO SEBASTIAN; SANFENRAITER MELANIA
Reunión:
Congreso; 1st Joint Meeting ISCE/ALAEQ; 2016
Institución organizadora:
ISCE/ALAEQ
Resumen:
Epicauta is one of the most diverse genera of Meloidae and it is considered an importanthorticultural pest in the world. Adults of species from South America have been reportedas damaging several species of different plants families like Amaranthaceae, Asteraceae,Brassicaceae, Fabaceae, Mimosaceae, Portulacaceae, Solanaceae and Zygophillaceae.The chemical control has given rise to several problems including the pollution of theenvironment by insecticide residues, the selection of resistant pest populations, thenegative side effects on beneficial parasites and predators and the deleterious effects onhuman health. In this context the main objective are study the repellent and antifeedantproperties of ethanolic extracts of several plants with the purpose of searching forenvironmentally-friendly compounds controls for Epicauta. The plants used areAmaranthus quitensis; Artemisia dracunculus; Brassica oleracea V. Capitata; B.oleracea V. Italica; Beta vulgaris V. conditiva; Borago officinalis; Capsicum annum V.Bell; Clematis bonariensis; Dysphnia ambrosioides; Lavandula sp.; Origanum vulgare;Passiflora caerulea; Rosmarinus officinalis; Spinacia oleracea; Tagetes patula; andThymus vulgaris. For feeding choice assay an antifeedant index (AI) was calculated as [1-(T/C)] x 100 where T and C represent consumption on treated and untreated food,respectively. The repellence tests were conducted using filter paper separated in halves.Repellence percentages were determined for each extract. The ethanolic extracts from A.dracunculus and T. vulgaris showed more than 100% of repellent activity and ethanolicextracts from T. patula, T. vulgaris, R. officinalis and Artemisia dracunculus showedmore than 90% inhibition of the feeding at 100 μg/cm2 against Epicauta. For theapplication of these extracts in the Epicauta control, we propose categorize each extractas an insect control product taking into account the antifeedant activity and repellent.With this aim in mind, we will establish a rank of the most active extracts, using theiractivity on Epicauta ?in situ?.