Marise Maleck, Michele Teixeira Serdeiro, Fernanda Cristina Carvalho dos Santos, AntÃ´nio Marcos Oliveira Braun, Douglas Siqueira de Almeida Chaves, Ana Raquel Faria, Ana Paula de Almeida
The search for new compounds for developing insecticide agents has stimulated interest in researching natural products from plants. This study aimed to evaluate the potential of extracts obtained from Brazilian plants â€“ Caesalpinia peltophoroides
(Fabaceae), â€œSibipirunaâ€;Cecropia catarinensis
(Urticaceae), â€œEmbaÃºbaâ€; and Bromelia antiacantha
(Bromeliaceae), â€œGravatÃ¡â€ â€“ as sources of biologically active substances against Oncopeltus fasciatus
Dallas (Hemiptera: Lygaeidae), the insect vector of Phytomonas. Oral treatment with C. peltophoroides
resulted in 40% mortality rates among nymphs (500 Âµg/mL) and 100% toxicity in the eggs (500 Âµg/mL). Oral treatment with crude methanolic extract of C. catarinensis
produced 30% nymph mortality, oviposition reduction and 100% inhibition of egg hatching of O. fasciatus
, while topical treatment resulted in 47% nymph mortality. Topical treatment with B. antiacantha
showed 60% nymph mortality, and toxicity in the eggs (100 Âµg/mL) of O. fasciatus
. These data suggest that the plants studied here can contribute new active compounds for insect control.
Marise Maleck, Michele Teixeira Serdeiro, Fernanda Cristina Carvalho dos Santos, AntÃ´nio Marcos Oliveira Braun, Douglas Siqueira de Almeida Chaves, Ana Raquel Faria, Ana Paula de Almeida. Bioactivity of Brazilian plant extracts on Oncopeltus fasciatus. Int. J. Fauna Biol. Stud. 2014;1(6):114-120.