Determination of the larvicidal activity of benzoyl thiosemicarbazone and its Ni(II) complex against Aedes aegypti and Anopheles darlingi larvae in Amazonas, Brazil

Abstract

Due to the resistance of some mosquitoes to pyrethroids insecticides, new synthetic compounds are of great interest for the development of new insecticides against vectors of tropical diseases, especially in the Amazon region. Our aim was to synthesize and evaluate the larvicidal potential of benzoyl thiosemicarbazone and its Ni(II) complex against larvae of Aedes aegypti.

Chemical composition, in vitro larvicidal and antileishmanial activities of the essential oil from Citrus reticulata Blanco fruit peel

“…Larvae of A. aegypti were obtained from the Laboratório de Patologia Tropical e Saúde Pública that belongs to the Universidade Federal de Goiás, UFG, Brazil. The larvicidal assay was performed in agreement with a previously reported method (Mesquita et al, 2018), as follows: larvae were kept in plastic trays under controlled temperature (26 ± 2 °C) and humidity (70-80%) until they reached the third final instar stage. Afterwards, 10 larvae were transferred to 50-mL plastic cups, each containing 10 mL mineral water and ground fish food (TetraMin Tropical Flakes), followed by the addition of 100 µL solution of CR-EO in dimethyl sulfoxide (DMSO) (25-500 µg/mL).…”

Chemical composition and larvicidal activity of the essential oil from the leaves of Onychopetalum periquino (Rusby) D.M. Johnson & N.A. Murray

“…Larvae of A. aegypti were obtained from the insectarium of the Laboratório de Malária e Dengue, Instituto Nacional de Pesquisas da Amazônia (INPA). The larvicidal assay was 3 performed according to a previously reported method (Mesquita et al, 2018), as follows: larvae were kept in plastic trays under controlled temperature (26±2 °C) and humidity (70-80 %) until they reached the third final instar stage. Furthermore, 10 larvae were transferred to plastic cups with a 50-mL capacity, each containing 10 mL of mineral water and grinded fish food (TetraMin Tropical Flakes), followed by the addition of 100 μL solution of EO in dimethyl sulfoxide (DMSO) (25-500 μg/mL).…”