Biological activity of neolignans on the post-embryonic development of Chrysomya megacephala

Burchellin: study of bioactivity against Aedes aegypti

“…Larvicidal activity of the neolignan with 50% mortality occurred at a concentration of 15.5 ppm and with 100% mortality at 30 ppm, justifying the interest in this class of compounds or in the plant family in question. Studies indicate the presence of different biological activity in the genus Ocotea and that biomonitoring phytochemistry vs activity [32] can be confirmed by biological activities of insects [11,12], especially in the case of burchellin [14,19]. This was again confirmed in this study where burchellin showed toxicity in group and individual treatment of L3 larvae of A. aegypti.…”

“…The mode of action of natural insecticides is variable. While some of them inhibit normal growth and development [10-12], others inhibit the synthesis of tyrosinase, an enzyme involved in sclerotization of the cuticle, such as in the case of Culex quinquefasciatus larvae [13], or act as an antidiuretic hormone [14] and reduce reproductive capacity [15]. Plant extracts and phytochemicals have potential as products for mosquito control because many of them are selective, may often biodegrade to nontoxic products, and may be applied to mosquito breeding places in the same way as conventional insecticides [16-18].…”

“…Plant extracts and phytochemicals have potential as products for mosquito control because many of them are selective, may often biodegrade to nontoxic products, and may be applied to mosquito breeding places in the same way as conventional insecticides [16-18]. Several studies have been carried out on lignans and their effects on insects [7,11,12,14,15,19], indicating that they could be larvicidal against A. aegypti [9]. The neolignans eupomatenoid-6, eupomatenoid-5 and conocarpan, isolated from the leaves of Piper decurrens A.DC.…”

Biological activity of Pouteria sapota leaf extract on post-embryonic development of blowfly Chrysomya putoria (Wiedemann, 1818) (Calliphoridae)

“…1). Cabral et al (2007b) also observed that larval and newly hatched larvae to adult periods of the blowfly C. megacephala seemed to be more sensitive to the substance isolated from Ocotea duckei Vattimo-Gil, Lauraceae. Sukontason et al (2004) in the same way that observed larval and the adults of Musca domestica were significantly more susceptible than C. megacephala to eucalyptol.…”

Aedes aegypti: modelo experimental de atividade biológica de fitoprodutos

“…A natureza é uma das mais promissoras fontes de novas moléculas biologicamente ativas. As plantas são reconhecidas por sua diversidade química e pela sua aplicação em diferentes áreas, desde o seu uso na medicina popular até seus diversos modos de ação sobre os insetos, principalmente os de importância na saúde pública e na agricultura [10][11][12][13][14][15][16] .…”