Efeitos de óleos essenciais sobre Lasioderma serricorne (Fabricius) (Coleoptera: Anobiidae)
Data
2021-12-10
Autores
Baptista, Yago Alves
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Estadual Paulista (Unesp)
Resumo
O besouro-do-fumo, Lasioderma serricorne (Fabricius) (Coleoptera: Anobiidae), é uma praga altamente polífaga e prejudicial que infesta diversos produtos armazenados, incluindo o tabaco. Seu controle é obtido principalmente por meio de aplicações de inseticidas sintéticos, cujos efeitos adversos ao meio ambiente e pressão de seleção têm sido amplamente discutidos. Dentre as opções de manejo alternativas ao método químico convencional, o uso de derivados botânicos configura-se como uma ferramenta eficiente e mais sustentável a longo prazo. Nesse sentido, o uso de óleos essenciais tem se destacado no manejo de artrópodes-praga dos armazéns. Os óleos essenciais de plantas têm sido considerados uma alternativa promissora ao manejo convencional de insetos-pragas. Os principais objetivos do presente estudo são introduzir novos compostos naturais ambientalmente seguros para o controle do besourinho do fumo, L. serricorne, além de retardar a seleção de resistência de populações de insetos-pragas. Por esse motivo, avaliamos os efeitos tóxicos e repelentes de óleos essenciais de duas espécies de Piperaceae separadamente e em uma mistura binária contra adultos de L. serricorne. Inicialmente, a atividade inseticida dos óleos essenciais separadamente foi avaliada. Em seguida, as concentrações necessárias para causar 50 e 90% de mortalidade na população de L. serricorne foram determinadas para ambos óleos essenciais. Em seguida, os tratamentos foram utilizados para determinar o tempo necessário para causar a mortalidade de 50% da população e verificar os efeitos repelentes em L. serricorne. Por fim, o efeito sinérgico da mistura binária entre os óleos também foi verificado. Os óleos essenciais separadamente de Piper aduncum e Piper marginatum, além de sua mistura binária foram os altamente tóxicos contra L. serricorne. As concentrações letais do óleo essencial de P. aduncum, necessárias para matar 50% e 90% das populações de L. serricorne, variaram entre 26,41 a 138,48 µL L -1 , respectivamente, enquanto que P. marginatum variou entre 15,64 a 48,90 µL L -1 . Todos os tratamentos agiram rapidamente e causaram mortalidade de 50% da população de L. serricorne em menos de 38 horas de exposição à fumigação. A mistura foi mais tóxica do que os óleos essenciais aplicados separadamente, o que indica a ocorrência de efeitos sinergistas. Além disso, o óleo essencial de P. aduncum foi repelente para L. serricorne. Os resultados indicaram que os óleos essenciais testados e sua mistura binária tem potencial para serem desenvolvidos como inseticidas e repelentes naturais para o controle de populações de L. serricorne, além de também poderem ser utilizados como alternativa para o manejo da resistência dessas populações.
The cigarette beetle, Lasioderma serricorne (Fabricius) (Coleoptera: Anobiidae), is a highly polyphagous and harmful pest that infests several stored products, including tobacco. Its control is obtained mainly through applications of synthetic insecticides, whose adverse effects on the environment and selection pressure have been widely discussed. Among the management options alternative to the conventional chemical method, the use of botanical derivatives is an efficient and more sustainable tool in the long run. In this sense, the use of essential oils has stood out in the management of pest arthropods in warehouses. One of the main problems caused by synthetic insecticides use is the development of resistant insect populations. Essential oils of plants have been considered a promising alternative to the conventional management of pests-insects. The main objectives of the present study are to introduce new, ecologically safe, and natural compounds for controlling the cigarette beetle, Lasiderma serricorne Fabricius (Coleoptera: Anobiidae), in addition to retard the resistance selection of insect-pest populations. For this reason, we evaluate the toxic and repellent effects of two Piperaceae species essential oils separately and in a binary mixture against adults of L. serricorne. Initially, the insecticidal activity of separately essential oils was assessed. Then, the concentrations necessary to cause 50 and 90% of mortality in the L. serricorne population were determined for the both essential oils. After that, treatments were used to determine the time required to cause mortality of 50% of the population and check the repellent effects on L. serricorne. At least, the synergistic effect of the oils was also verified. The separately essential oils of Piper aduncum and Piper marginatum and your binary mixture were the highly toxic against L. serricorne. P. aduncum essential oil lethal concentrations, needed to kill 50% and 90% of L. serricorne populations, vary between 26.41 to 138.48 µL L-1 , respectively, whereas P. marginatum vary between 15,64 to 48,90 µL L-1 . All treatments acted quickly and caused mortality of 50% of the population of L. serricorne in less than 38 hours of fumigation exposure. The mixture was more toxic than the essential oils applied separately, which indicates the occurrence of synergistic effects. In addition, the essential oil P. aduncum was repellent to L. serricorne, however P. marginatum was attractive to him. The results indicated that the tested essential oils and your binary mixture had the potential to be developed as natural insecticides and repellents for controlling L. serricorne populations and can also be used as an alternative for the resistance management of these populations.
The cigarette beetle, Lasioderma serricorne (Fabricius) (Coleoptera: Anobiidae), is a highly polyphagous and harmful pest that infests several stored products, including tobacco. Its control is obtained mainly through applications of synthetic insecticides, whose adverse effects on the environment and selection pressure have been widely discussed. Among the management options alternative to the conventional chemical method, the use of botanical derivatives is an efficient and more sustainable tool in the long run. In this sense, the use of essential oils has stood out in the management of pest arthropods in warehouses. One of the main problems caused by synthetic insecticides use is the development of resistant insect populations. Essential oils of plants have been considered a promising alternative to the conventional management of pests-insects. The main objectives of the present study are to introduce new, ecologically safe, and natural compounds for controlling the cigarette beetle, Lasiderma serricorne Fabricius (Coleoptera: Anobiidae), in addition to retard the resistance selection of insect-pest populations. For this reason, we evaluate the toxic and repellent effects of two Piperaceae species essential oils separately and in a binary mixture against adults of L. serricorne. Initially, the insecticidal activity of separately essential oils was assessed. Then, the concentrations necessary to cause 50 and 90% of mortality in the L. serricorne population were determined for the both essential oils. After that, treatments were used to determine the time required to cause mortality of 50% of the population and check the repellent effects on L. serricorne. At least, the synergistic effect of the oils was also verified. The separately essential oils of Piper aduncum and Piper marginatum and your binary mixture were the highly toxic against L. serricorne. P. aduncum essential oil lethal concentrations, needed to kill 50% and 90% of L. serricorne populations, vary between 26.41 to 138.48 µL L-1 , respectively, whereas P. marginatum vary between 15,64 to 48,90 µL L-1 . All treatments acted quickly and caused mortality of 50% of the population of L. serricorne in less than 38 hours of fumigation exposure. The mixture was more toxic than the essential oils applied separately, which indicates the occurrence of synergistic effects. In addition, the essential oil P. aduncum was repellent to L. serricorne, however P. marginatum was attractive to him. The results indicated that the tested essential oils and your binary mixture had the potential to be developed as natural insecticides and repellents for controlling L. serricorne populations and can also be used as an alternative for the resistance management of these populations.
Descrição
Palavras-chave
Besouro-do-fumo, Inseticida botânico, Piper marginatum, Piper aduncum, Fumigação, Repelência, Cigarette beetle, Botanical insecticide, Fumigation