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de Oliveira AC, Simões RC, Tavares CPS, Lima CAP, Costa Sá IS, da Silva FMA, Figueira EAG, Nunomura SM, Nunomura RCS, Roque RA. Toxicity of the essential oil from Tetradenia riparia (Hochstetter.) Codd (Lamiaceae) and its principal constituent against malaria and dengue vectors and non-target animals. Pestic Biochem Physiol 2022; 188:105265. [PMID: 36464370 DOI: 10.1016/j.pestbp.2022.105265] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/04/2022] [Accepted: 10/11/2022] [Indexed: 06/17/2023]
Abstract
Malaria and dengue are diseases transmitted by mosquitoes of the genera Anopheles and Aedes resistant to commercial insecticides, which are toxic to non-target animals. Alternatively, eco-friendly strategies have focused on searching for essential oil (EO) from plants to control these mosquitoes. In this aspect, this study was carried out to investigate the toxicity of the EO from Tetradenia riparia and its main constituent against Anopheles and Aedes larvae and non-target animals Toxorhynchites haemorrhoidalis and Gambusia affinis. The mechanism of the larvicidal action of the EO and its main compound was investigated by the acetylcholinesterase (AChE) inhibition. The EO from T. riparia was extracted by hydrodistillation with yield of 1.4 ± 0.17%. The analysis of the EO by GC-MS and GC-FID revealed fenchone (38.62%) as the main compound. The EO (100 ppm) showed larvicidal activity against Anopheles and Aedes larvae (91 to 100% of mortality) (LC50 from 29.31 to 40.76 ppm). On the other hand, fenchone (10 ppm) showed more activity (89 to 100% of mortality) (LC50 from 5.93 to 7.00 ppm) than the EO. The EO and fenchone caused the inhibition of AChE (IC50 from 1.93 to 2.65 ppm), suggesting the inhibition of this enzyme as a possible mechanism of larvicidal action. Regarding toxicity, the EO (1000 ppm) and fenchone (100 ppm) showed low toxicity against T. haemorrhoidalis and G. affinis (9 to 74% of mortality) (LC50 from 170.50 to 924.89 ppm) (SI/PSF from 17.99 to 31.91) than the α-cypermethrin (0.52 ppm) which was extremally toxic against these non-target animals (100% of mortality, LC50 from 0.22 to 0.29 ppm). This significant larvicidal activity of the T. riparia EO and its main constituent, along with the low toxicity towards non-target organisms indicate these samples as a possible eco-friendly alternative for the control of malaria and dengue vectors.
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Affiliation(s)
- André C de Oliveira
- Central Analítica, Centro de Apoio Multidisciplinar, Universidade Federal do Amazonas, 69080-900 Manaus, Amazonas, Brazil; Laboratório de Malária e Dengue, Coordenação da Sociedade, Ambiente e Saúde, Instituto Nacional de Pesquisas da Amazônia, 69067-375 Manaus, Amazonas, Brazil.
| | - Rejane C Simões
- Laboratório de Malária e Dengue, Coordenação da Sociedade, Ambiente e Saúde, Instituto Nacional de Pesquisas da Amazônia, 69067-375 Manaus, Amazonas, Brazil; Fundação de Vigilância em Saúde do Amazonas, Dr Rosemary Costa Pinto, 69093-018 Manaus, Amazonas, Brazil
| | - Cláudia P S Tavares
- Laboratório de Malária e Dengue, Coordenação da Sociedade, Ambiente e Saúde, Instituto Nacional de Pesquisas da Amazônia, 69067-375 Manaus, Amazonas, Brazil
| | - Carlos A P Lima
- Laboratório de Malária e Dengue, Coordenação da Sociedade, Ambiente e Saúde, Instituto Nacional de Pesquisas da Amazônia, 69067-375 Manaus, Amazonas, Brazil
| | - Ingrity S Costa Sá
- Central Analítica, Centro de Apoio Multidisciplinar, Universidade Federal do Amazonas, 69080-900 Manaus, Amazonas, Brazil
| | - Felipe M A da Silva
- Central Analítica, Centro de Apoio Multidisciplinar, Universidade Federal do Amazonas, 69080-900 Manaus, Amazonas, Brazil
| | - Elder A G Figueira
- Fundação de Vigilância em Saúde do Amazonas, Dr Rosemary Costa Pinto, 69093-018 Manaus, Amazonas, Brazil
| | - Sergio M Nunomura
- Laboratório de Princípios Ativos da Amazônia, Coordenação de Tecnologia e Inovação, Instituto Nacional de Pesquisas da Amazônia, 69067-375 Manaus, Amazonas, Brazil
| | - Rita C S Nunomura
- Central Analítica, Centro de Apoio Multidisciplinar, Universidade Federal do Amazonas, 69080-900 Manaus, Amazonas, Brazil
| | - Rosemary A Roque
- Laboratório de Malária e Dengue, Coordenação da Sociedade, Ambiente e Saúde, Instituto Nacional de Pesquisas da Amazônia, 69067-375 Manaus, Amazonas, Brazil
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