Toxicity,behavior impairment,and repellence of essential oils from pepper‐rosmarin and patchouli to termites |
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| Authors: | Leandro Bacci Janaína KA Lima Ana Paula A Araújo Arie F Blank Indira MA Silva Abraão A Santos Ane CC Santos Péricles B Alves Marcelo C Picanço |
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| Affiliation: | 1. Departamento de Engenharia Agron?mica, Universidade Federal de Sergipe, S?o Cristóv?o, SE, Brazil;2. Programa de Pós‐gradua??o Biotecnologia de Recursos Naturais, Universidade Federal de Sergipe, S?o Cristóv?o, SE, Brazil;3. Departamento de Ecologia, Universidade Federal de Sergipe, S?o Cristóv?o, SE, Brazil;4. Departamento de Química, Universidade Federal de Sergipe, S?o Cristóv?o, SE, Brazil;5. Departamento de Entomologia, Universidade Federal de Vi?osa, Vi?osa, MG, Brazil |
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| Abstract: | Plant essential oils are potential sources of insecticidal compounds, but have rarely been explored for their effect on termites. In the present study, we assessed the chemical composition of essential oils of Lippia sidoides Cham. (pepper‐rosmarin; Verbenaceae) and Pogostemon cablin (Blanco) Benth. (patchouli; Lamiacaeae) and evaluated their toxicity, behavioral impairment, and repellence to termite species of the genera Amitermes and Microcerotermes (Isoptera: Termitidae: Termitinae). The main components of essential oils of L. sidoides and P. cablin were thymol (44.6%) and patchouli alcohol (36.6%), respectively. The essential oil of P. cablin was most potent against Amitermes cf. amifer Silvestri and had the lowest LD50 (0.63 μg mg?1). There was no difference in toxicity for Microcerotermes indistinctus Mathews between the essential oils of L. sidoides (LD50 = 1.49 μg mg?1) and P. cablin (LD50 = 1.67 μg mg?1). Pogostemon cablin essential oil was the most toxic to M. indistinctus (LC50 = 0.32 μl ml?1) and A. cf. amifer (LC50 = 0.29 μl ml?1). The essential oils analyzed exhibited high toxicity and repellence to the termites, in addition to reducing behavioral interactions among individuals, thus constituting potential termiticides. |
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| Keywords: | botanical insecticides collective behavior integrated pest management IPM termiticide
Lippia sidoides
Pogostemon cablin
Amitermes cf amifer
Microcerotermes indistinctus
Termitidae Isoptera |
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