Abstract
The objective of this work was to evaluate the acute toxicity, sublethal effect and behavioral alteration of L. serricorne exposed to the major components of essential oils, thymol, camphor, terpineol, camphene, eucalyptol, limonene, βpinene and eugenol. The adults of L. serricorne , aged 5 days, not sexed, were submitted to acute toxicity by fumigation, used fumigation chambers, 200 ml glass containers with 20 insects, subsequently the sublethal effect, longevity and behavioral response. The results show that the major components and mixtures caused acute toxicity, reduced the survival time and production of offspring and altered the behavioral activity of L. serricorne. The major components eucalyptol and terpineol presented 65% mortality, in which the mixtures terpineol + eucalyptol and camphor + thymol presented 47 and 52% over adults of L. serricorne. The mixture between terpineol + limonene allowed only 4% ofadults to L. serricorneemerge. Behavioral activity was altered by the eucalyptol + eugenol mixture. The results showed that the major components and mixtures are promising for the preparation and production of new insecticides.
Highlights
The Lasioderma serricorne Fabricius (Coleoptera: Anobiidae) has since 1993 been widely distributed worldwide, especially in tropical and subtropical areas (Lorini et al, 2010)
The results show that the major components and mixtures caused acute toxicity, reduced the survival time and production of offspring and altered the behavioral activity of L. serricorne
The results showed that the major components and mixtures are promising for the preparation and production of new insecticides
Summary
The Lasioderma serricorne Fabricius (Coleoptera: Anobiidae) (cigarette beetle) has since 1993 been widely distributed worldwide, especially in tropical and subtropical areas (Lorini et al, 2010). Research on essential oils extracted from plants, as well as studies such as the isolated or associated use of the major components present in essential oils, have been considered promising for insect pest control (Erdemir and Erler, 2017; Martins et al, 2017). They are typically characterized by having lower toxicity in mammals, low persistence in the environment and decreased development of insect resistance (Aslan et al, 2004; Santos et al, 2011; Oliveira et al, 2018). The present study aimed to evaluate the acute toxicity, sublethal effect and the behavioral response of L. serricorne exposed to the major components thymol, camphor, terpineol, camphene, eucalyptol, limonene, βpinene and eugenol
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