Insecticidal activity of essential oils of species from the genus Lippia against Nasutitermes corniger (Motschulsky) (Isoptera: Termitidae)

Abstract

Lippia is one of the main genera in the family Verbenaceae, with 200 species described. Despite its richness in bioactive molecules, with several scientifically proven applications, there is little information on the insecticidal potential of its species. This study aimed to assess the insecticidal potential of essential oils from the species Lippia thymoides (Martius & Schauer); Lippia lasiocalycina (Schauer) and Lippia insignis (Moldenk) against Nasutitermes corniger (Motschulsky) (Isoptera-Termitidae). Insecticidal activity was evaluated by exposure to a contaminated surface, whereby plastic pots were lined with filter paper and imbibed in 1.5 ml of solution containing essential oils (10 µl/ml), with 10 N. corniger specimens per pot. The mortality count was performed at 24 and 48 h. The LC50 was determined by diluting the essential oils to concentrations of 0, 0.625, 1.25, 2.5, 5.0 and 10 µl/ml, which were chemically analyzed by GC-FID and GC-MS. The data indicated high toxicity for the essential oils for the Lippia species tested. The lowest LC50 (0.46 µl/ml) was recorded for L. lasiocalycina. The most common constituents were β-myrcene and (E)-ocimenone in essential oil of L. lasiocalycina, β-myrcene and limonene for L. insignis, and (E)-caryophyllene and caryophyllene oxide for L. thymoides. The results demonstrate the viability of developing biopesticides for N. corniger control.

Quimiotipos de Lippia origanoides Kunth na Amazonia e sua importância farmacológica: uma revisão

“…O interesse pelos óleos essenciais reside em diferentes áreas do conhecimento com as mais variadas aplicações na indústria química como bioinseticida (DE ALBUQUERQUE LIMA et al, 2021;LIMA et al, 2021;OLIVEIRA, SANTOS et al, 2020), antifúngicos (ORTEGA-CUADROS et al, 2020;ROSANI et al, 2019), em cosméticos (GIMENES et al, 2021;SAGBO;MBENG, 2019), alimentos (MORONI; AIS; O'LEARY, 2022; LASCURAIN-RANGEL et al, 2022;BAUTISTA-HERNÁNDEZ et al, 2021) e farmacêutica, devido às suas propriedades anti-hipertensivas, anti-inflamatórias, atividades analgésica e antipirética, antimalárica, antimicrobiana ( LUCCA et al, 2022), antioxidante (MOLLER et al, 2020;JOSHI et al, 2018) e inibidor da acetilcolinesterase (KOBENAN et al, 2022;LI et al, 2020;MONIZ et al, 2019;SAIDI et al, 2020).…”

Plant-Based Essential Oils in The Treatment of Microbial Infections

“…was evaluated for its antimicrobial activity against bacteria (Gram-negative, Grampositive) and fungus (C. albicans) (Table 1). The analysis of the EO chemical composition of this species was carried out by Santos et al (2020), who found as main components β-myrcene (31.17%), (E)-ocimenone (24.10%), p-cymene (7.17%) and (Z)-ocimenone (6.51%), differing from the results obtained by Almeida et al (2018), who identified piperitenone oxide (57.55%) and limonene (20.69%) as major compounds in the EO of L. lasiocalycina. Despite the great interest in research on the biological properties of natural compounds obtained from the genus Lippia, studies related to the species L. lasiocalycina are still scarce, which emphasizes the search for more in-depth studies related to the antimicrobial activity of this EO.…”

Evaluation of Tung Oil (Vernicia fordii (Hemsl.)) for Controlling Termites

“…Many essential oils have antitermitic activities, including oils from Lippia spp. [27] , Artemisia absinthium [28] , Lippia sidoides [29] , Chamaecyparis formosensis [30] , Liquidambar orientalis, and Valeriana wallichii [31] . Hutchins [32] reported that Aleurites fordii wood and meal extracts had antitermitic toxicity.…”