Open-access Larvicidal activity of Maytenus guianensis (Celastraceae) against Aedes aegypti (Diptera: Culicidae)

INTRODUCTION:  Bioprospection of plant products is used to discover new insecticides.

METHODS:  The larvicidal activity of ethanolic extract and triterpene (tingenone B) from the bark of Maytenus guianensis and their effect on pupation and emergence were evaluated against Aedes aegypti.

RESULTS:  Crude extract LC50 was 11.3 ppm and caused ejection of the larvae intestine; tingenone B LC50 was 14.8 ppm. Pupation was reduced by 20% and 10%, respectively; however, the emergence was not affected.

CONCLUSIONS:  The crude bark extract exhibited a higher larvicidal effect against the vector.

Keywords:
Vector control; Insecticide; Larvicidal activity; Bioprospection; 22β-hydroxytingenone; Dengue mosquito

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Sociedade Brasileira de Medicina Tropical - SBMT Sociedade Brasileira de Medicina Tropical - SBMT, Núcleo de Medicina Tropical – UnB, Sala 43C – 70904-970, E-mails: rsbmt@sbmt.org.br | artes.rsbmt@gmail.com , WhatsApp: SBMT (61) 9.9192-6496, WhatsApp: RSBMT (34) 3317-5855 - Brasília - DF - Brazil
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