Neotropical Entomology (2019) 48, 515-521

A.A. Santos, C.R. Melo, B.M.S. Oliveira, A.S. Santana, A.C.C. Santos, T.S. Sampaio, A.F. Blank, P.F. Cristaldo, A.P.A. Araújo and L. Bacci (2019)
Acute toxicity and sub-lethal effects of the essential oil of Aristolochia trilobata and its major constituents on Nasutitermes corniger (Termitidae: Nasutitermitinae)
Neotropical Entomology 48 (3), 515-521
Abstract: Nasutitermes corniger (Motschulsky, 1855) (Termitidae: Nasutitermitinae) is an important pest in urban environments and bioinsecticides can be an alternative to its control. Here, we determined the toxicity and repellence of the essential oil (EO) prepared from stems of Aristolochia trilobata L. (Aristolochiaceae) and its major constituents on N. corniger. We also investigated behavioral changes of individuals exposed to limonene. The lethal dose required to kill 50% of N. corniger population (LD₅₀) of EO of A. trilobata was 2.44 μg mg^-1. Limonene was the most toxic compound to N. corniger followed by linalool (LD₅₀ = 1.02 and 1.29 μg mg^-1, respectively). In addition, all treatments presented median lethal time (LT₅₀) less than 11 h. A. trilobata EO and its constituents showed irritability activity, but only limonene repelled soldiers more than workers. The negative behaviors of N. corniger groups were higher in individuals treated with limonene. A. trilobata EO and its constituents, especially the limonene, are promising for the control of N. corniger due the high toxicity, repellence, and possible disturbance in the colonies.
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Link to article at publishers website
Database assignments for author(s): Leandro Bacci, Abraão Almeida Santos

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Nasutitermes corniger