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.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8047713 | PMC |
| http://dx.doi.org/10.1590/0037-8682-0835-2020 | DOI Listing |
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