ABSTRACT
OBJECTIVE@#To evaluate an essential oil with larvicide, adulticide and growth inhibitory activity against Aedes aegypti, Aedes albopictus and Culex quinquefasciatus mosquitoes, of medical importance.@*METHODS@#Standardized methodology by WHO was used to determine the levels of susceptibility of mosquito larvae exposed to the essential oil. To evaluate the adulticide activity with the essential oil at different doses, bottles were impregnated according to the methodology CDC. To determine the development inhibitory activity of Melaleuca quinquenervia (M. quinquenervia) oil in three mosquito species, third instar larvae were exposed to the LC and LC dose (calculated for each population) of M. quinquenervia oil in glass containers with a capacity of 500 mL. After 24 h exposure, the dead larvae were discarded. The mortality of larvae and pupae were recorded on a daily basis.@*RESULTS@#The calculated LC indicates an order of effectiveness of preferential oil for Culex quinquefasciatus (LC = 0.0021%), Aedes aegypti (LC = 0.0047%) and Aedes albopictus (LC = 0.0049%).@*CONCLUSIONS@#The adulticide activity was achieved with impregnated bottles at 40 and 50 mg/mL with the three mosquitoes species. In larvae, a growth inhibition was detected when exposed to sublethal doses. The results indicate that M. quinquenervia is a plant with promising environmentally sustainable source for vector control.
ABSTRACT
Objective To evaluate an essential oil with larvicide, adulticide and growth inhibitory activity against Aedes aegypti, Aedes albopictus and Culex quinquefasciatus mosquitoes, of medical importance. Methods Standardized methodology by WHO was used to determine the levels of susceptibility of mosquito larvae exposed to the essential oil. To evaluate the adulticide activity with the essential oil at different doses, bottles were impregnated according to the methodology CDC. To determine the development inhibitory activity of Melaleuca quinquenervia (M. quinquenervia) oil in three mosquito species, third instar larvae were exposed to the LC
ABSTRACT
The side effects of lindane in children with pediculosis were reported. 2.54 of the 551 primary school children who underwent treatment had adverse reactions to this drug. It was recommended to increase knowledge about this parasitization and to avoid the indiscriminate use of chemicals and other products to eliminate lices.
Subject(s)
Humans , Male , Female , Child , Lice Infestations/drug therapy , HexachlorocyclohexaneABSTRACT
Três compostos organo-fosforados - malation, folition e temefos - e dois piretroides sintéticos - alfametrina e deltametrina - foram usados para controlar o estado da susceptibilidade das larvas e adultos de seis mosquitos vetores na India. Foram utilizadas cepas de laboratório e área de Culex quinquefasciatus (filariasis) e Aedes albopictus (Dengue) e cepas de laboratório de Aedes aegypti (Dengue), Anopheles stephensi e Anopheles culicifacies (Malária) e Culex tritaenorhynchus (encefalite japonesa). Os valores de C1**50 obtidos para esses inseticidas mostram que todas as espécies incluindo as cepas de área foram muito susceptíveis. Nos mosquitos adultos das referidas espécies salvo na cepa da área de Culex quinquefasciatus com o malathion, observou-se 100 por cento da mortalidade às doses discriminatórias recomendadas pela Organizaçäo Mundial de Saúde. O efeito residual da alfametrina, deltametrina, malation e folition a 25 mg(ai)/m2 em diversas superfícies contra seis espécies de mosquitos vetores evidenciou que a alfametrina foi a mais efetiva em todas as superfícies tratadas (argila, plywood, cimento e palha)