1
|
Dadé MM, Daniele M, Reyes-Novelo E, Rodriguez-Vivas RI. Lethal and repellent effect of amitraz, eugenol and thymol against Triatoma infestans, the main vector of Trypanosoma cruzi in the southern of America. MEDICAL AND VETERINARY ENTOMOLOGY 2023; 37:574-580. [PMID: 37052250 DOI: 10.1111/mve.12655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 03/23/2023] [Indexed: 06/19/2023]
Abstract
The lethal and repellent effect of the synthetic insecticide amitraz and the botanical insecticides eugenol and thymol separately and together in binary mixtures was tested against late-stage nymphs of a susceptible strain of Triatoma infestans, the main vector of Trypanosoma cruzi, the etiological agent of Chagas disease, in the Southern Cone of America. For the lethality study, the LD50 was determined for each insecticide alone and in binary mixture by topical application. The combination index (CI) was established to quantify interactions occurring between the insecticides. The repellent effect was tested using the area preference technique. The lethal effect of amitraz was 11 and 34 times more potent than that of thymol and eugenol, respectively. Only the combination of eugenol and amitraz at high concentrations showed a synergistic effect (CI: 0.3). The repellent activity of monoterpenes after 30 min of exposure was significant at 780 and 78 μg/cm2 for eugenol and thymol, respectively. The residual repellent effect of eugenol lasted for one week at the concentrations of 1170 and 1560 μg/cm2 , whereas thymol managed to retain its repellent effect for two weeks at concentrations of 1560 and 3900 μg/cm2 .
Collapse
Affiliation(s)
- Martín M Dadé
- Universidad Nacional Arturo Jauretche, Instituto de Ciencias de la Salud, Florencio Varela, Buenos Aires, Argentina
- Sede Alto Valle y Valle Medio, Escuela de Veterinaria y Produccion Agroindustrial, Universidad Nacional de Río Negro, Choele Choel, Rio Negro, Argentina
- Cátedra de Farmacología Básica, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
- Carrera de Veterinaria, Universidad de Ciencias Empresariales y Sociales (UCES), Cañuelas, Buenos Aires, Argentina
| | - Martin Daniele
- Sede Alto Valle y Valle Medio, Escuela de Veterinaria y Produccion Agroindustrial, Universidad Nacional de Río Negro, Choele Choel, Rio Negro, Argentina
- Carrera de Veterinaria, Universidad de Ciencias Empresariales y Sociales (UCES), Cañuelas, Buenos Aires, Argentina
| | - Enrique Reyes-Novelo
- Centro de Investigaciones Regionales "Dr Hideyo Noguchi", Universidad Autónoma de Yucatán, Yucatán, Mexico
| | - Roger I Rodriguez-Vivas
- Campus de Ciencias Biológicas y Agropecuarias, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Yucatán, Mexico
| |
Collapse
|
2
|
Sousa PAS, Neto J, Barbosa JV, Peres J, Magro A, Barros G, Sousa JM, Magalhães FD, Mexia A, Aguiar AARM, Bastos MMSM. Novel Approach for a Controlled Delivery of Essential Oils during Long-Term Maize Storage: Clove Bud and Pennyroyal Oils Efficacy to Control Sitophilus zeamais, Reducing Grain Damage and Post-Harvest Losses. INSECTS 2023; 14:366. [PMID: 37103181 PMCID: PMC10146953 DOI: 10.3390/insects14040366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/27/2023] [Accepted: 04/05/2023] [Indexed: 06/19/2023]
Abstract
Maize grains represent a significant contribution for assuring food safety all over the globe. Sitophilus zeamais (Motschulsky) (Coleoptera: Curculionidae), also known as the maize weevil, is one of the most destructive pests in stored maize, causing qualitative and quantitative losses. To control S. zeamais populations in maize storage sites, synthetical chemical insecticides are applied. However, these are often used wastefully, have environmental implications, and can induce the development of resistant populations. In this work, the insecticidal and grain protecting efficacy of an innovative macro-capsule delivery device, loaded with essential oils from Clove bud and Pennyroyal, as well as their combined solutions, was tested against naturally S. zeamais-infested maize grains. The blend of both compounds incorporated in a controlled release device reduced losses by more than 45% over a long storage period of twenty weeks, diminishing the survivability of maize weevils by over 90%. The usage of the blend at a concentration of 370 μL⋅Lair-1 with an antioxidant showed the best results, however, by halving the concentration (185 μL⋅Lair-1), a significant control of S. zeamais populations was still achieved.
Collapse
Affiliation(s)
- Pedro A. S. Sousa
- GreenUPorto—Sustainable Agrifood Production Research Centre/Inov4Agro, Faculty of Sciences, University of Porto, Rua da Agrária 747, 4485-646 Vairão, Portugal; (P.A.S.S.)
| | - Joana Neto
- GreenUPorto—Sustainable Agrifood Production Research Centre/Inov4Agro, Faculty of Sciences, University of Porto, Rua da Agrária 747, 4485-646 Vairão, Portugal; (P.A.S.S.)
| | - Joana V. Barbosa
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Joana Peres
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Ana Magro
- Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - Graça Barros
- Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - José M. Sousa
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- Departamento de Química, Escola de Ciências da Vida e do Ambiente, Universidade de Trás-os-Montes e Alto Douro, Quinta de Prados, 5000-801 Vila Real, Portugal
| | - Fernão D. Magalhães
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - António Mexia
- Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
- LEAF—Linking Landscape, Environment, Agriculture and Food, School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - Ana A. R. M. Aguiar
- GreenUPorto—Sustainable Agrifood Production Research Centre/Inov4Agro, Faculty of Sciences, University of Porto, Rua da Agrária 747, 4485-646 Vairão, Portugal; (P.A.S.S.)
| | - Margarida M. S. M. Bastos
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| |
Collapse
|
3
|
Reynoso MMN, Zerba EN, Alzogaray RA. Eugenol and menthol synergize the toxicity of permethrin in the blood-sucking bug, Triatoma infestans. Acta Trop 2023; 241:106900. [PMID: 36940855 DOI: 10.1016/j.actatropica.2023.106900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 03/14/2023] [Accepted: 03/16/2023] [Indexed: 03/23/2023]
Abstract
The blood-sucking bug, Triatoma infestans, is one of the main vectors of Chagas disease in America. It is usually controlled with pyrethroids, but the emergence of resistance to these insecticides creates the need to look for alternative products. Eugenol, menthol and menthyl acetate are botanical monoterpenes, which produce lethal and sublethal effects on insects. The purpose of this work was to determine what type of toxicological interactions occur when binary mixtures, formed by the pyrethroid permethrin and sublehtal doses of eugenol, menthol or menthyl acetate, are applied to T. infestans. First instar nymphs were exposed to filter papers impregnated with the insecticides. The number of knocked down insects was registered at different times and Knock Down Time 50% (KT50) values were calculated. The following KT50 values with their corresponding 95% Confidence Intervals were obtained: permethrin, 47.29 (39.92 - 56.32) min; permethrin + eugenol, 34.08 (29.60 - 39.01) min; permethrin + menthol, 27.54 (23.28 - 32.55) min; permethrin + menthyl acetate, 43.62 (39.99 - 47.59) min. Eugenol and menthol increased the speed of action of permethrin (synergism), but menthyl acetate had no effect on it (additivity). These results provide the basis to further explore interactions between conventional insecticides and plant monoterpenes as potential tools for controlling T. infestans.
Collapse
Affiliation(s)
- M M Noel Reynoso
- UNIDEF-CITEDEF-CONICET-CIPEIN, Juan B. de La Salle 4397, Villa Martelli, Buenos Aires, Argentina.
| | - Eduardo N Zerba
- Instituto de Investigación e Ingeniería Ambiental, Universidad Nacional de San Martín (UNSAM), San Martín, Buenos Aires, Argentina
| | - Raúl A Alzogaray
- UNIDEF-CITEDEF-CONICET-CIPEIN, Juan B. de La Salle 4397, Villa Martelli, Buenos Aires, Argentina; Instituto de Investigación e Ingeniería Ambiental, Universidad Nacional de San Martín (UNSAM), San Martín, Buenos Aires, Argentina
| |
Collapse
|
4
|
Lazarević J, Jevremović S, Kostić I, Vuleta A, Manitašević Jovanović S, Kostić M, Šešlija Jovanović D. Assessment of Sex-Specific Toxicity and Physiological Responses to Thymol in a Common Bean Pest Acanthoscelides obtectus Say. Front Physiol 2022; 13:842314. [PMID: 35250641 PMCID: PMC8892178 DOI: 10.3389/fphys.2022.842314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 01/25/2022] [Indexed: 11/13/2022] Open
Abstract
Acanthoscelides obtectus Say (Coleoptera: Chrysomelidae: Bruchinae), is one of the most important pests of the common bean Phaseolus vulgaris L. Without appropriate management it may cause significant seed loss in storages. In search for means of environmentally safe and effective protection of beans we assessed biological activity of thymol, an oxygenated monoterpene present in essential oils of many aromatic plants. We studied contact toxicity of thymol on bean seeds and its effects on adult longevity and emergence in F1 generation. Furthermore, we determined acetylcholinesterase (AChE), superoxide dismutase (SOD), catalase (CAT), mixed-function oxidase (MFO), carboxylesterases (CarE) and glutathione S-transferase (GST) activities in response to 24 h exposure of beetles to sublethal and lethal thymol concentrations. Our results showed that thymol decreased adult survival, longevity and percentage of adult emergence. Higher median lethal concentration (LC50) was recorded in females indicating their higher tolerance comparing to males. Overall, activities of SOD, CAT and CarE increased at sublethal and MFO increased at both sublethal and lethal thymol concentrations. On the other hand, GST and AChE activities decreased along with the increase in thymol concentrations from sublethal (1/5 of LC50, 1/2 of LC50) to lethal (LC50). Enzyme responses to the presence of thymol on bean seed were sex-specific. In the control group females had lower CarE and higher SOD, CAT and GST activity than males. In treatment groups, females had much higher CAT activity and much lower CarE activity than males. Our results contribute to deeper understanding of physiological mechanisms underlying thymol toxicity and tolerance which should be taken into account in future formulation of a thymol-based insecticide.
Collapse
|
5
|
Domingue MJ, Scheff DS, Arthur FH, Myers SW. Sublethal exposure of Trogoderma granarium everts (Coleoptera: Dermestidae) to insecticide-treated netting alters thigmotactic arrestment and olfactory-mediated anemotaxis. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 171:104742. [PMID: 33357564 DOI: 10.1016/j.pestbp.2020.104742] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/29/2020] [Accepted: 11/02/2020] [Indexed: 06/12/2023]
Abstract
Long-lasting insecticide treated netting (LLIN) has a number of potential uses for the control of insect pests. Using such netting, stored products may be protected from insects including the khapra beetle (Trogoderma granarium Everts, Coleoptera: Dermestidae) a widespread pest of many agricultural commodities. Here we first examined whether brief exposures of larvae to LLIN, for less than 30 min, decreased the chance of eventual adult emergence compared to larvae exposed on untreated netting. Next, we observed the responses of larvae that were either not exposed to any netting, exposed to untreated netting, or exposed to LLIN for 10 min and then placed in a wind tunnel and monitored for movement toward a stimulus. The wind-tunnel assay was performed either with or without a lure containing kairomones and pheromones known to be attractive to larvae of this species. There was little effect of the LLIN on adult emergence of exposed larvae. However, there were interacting effects of untreated netting and LLIN relating to thigmotaxis and anemotaxis. Larvae not exposed to netting showed increased likelihood of walking upwind if the semiochemical lure was provided, as expected. A similar pattern was observed when the untreated netting was used, but the larvae became more likely to remain stationary in the assay after acclimating to the net. When LLIN was used, the larvae became more likely to move and there was a baseline increase in the likelihood of moving upwind. However, upwind walking was no longer related to semiochemical presentation. These observations suggest that particular care should be used in relation to the airflow patterns and semiochemical landscape of the warehouse settings in which LLIN is deployed.
Collapse
Affiliation(s)
- Michael J Domingue
- United States Department of Agriculture, Animal and Plant Health Inspection Services, Plant Protection and Quarantine, Science and Technology, 1398 West Truck Road, Buzzards Bay, A, 02542, USA; Kansas State University, Department of Entomology, Manhattan, Kansas 66502, USA.
| | - Deanna S Scheff
- United Stated Department of Agriculture, Agricultural Research Service, Center for Grain and Animal Health Research, 1515 College Avenue, Manhattan, KS 66502, USA
| | - Frank H Arthur
- United Stated Department of Agriculture, Agricultural Research Service, Center for Grain and Animal Health Research, 1515 College Avenue, Manhattan, KS 66502, USA
| | - Scott W Myers
- United States Department of Agriculture, Animal and Plant Health Inspection Services, Plant Protection and Quarantine, Science and Technology, 1398 West Truck Road, Buzzards Bay, A, 02542, USA
| |
Collapse
|
6
|
Reynoso MMN, Seccacini EA, Zerba EN, Alzogaray RA. Botanical monoterpenes synergise the toxicity of azamethiphos in the vector of Chagas disease, Triatoma infestans (Hemiptera: Reduviidae). Trop Med Int Health 2020; 25:1480-1485. [PMID: 32945539 DOI: 10.1111/tmi.13488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To investigate what toxicological interactions occur when binary combinations of azamethiphos and botanical monoterpenes (eugenol, menthol or menthyl acetate) are applied to Triatoma infestans. METHODS The toxicity of binary mixtures of azamethiphos and sublethal doses of a monoterpene (eugenol, menthol or menthyl acetate) was evaluated in nymphs of the first stage of T. infestans. Experiments using exposure to filter papers and topical application were carried out. Values of Lethal Concentration 50% (LC50) were calculated in the first case, and values of Lethal Dose 50% (LD50) in the second. RESULTS The LC50 of azamethiphos applied on filter paper was 50.3 µg/cm2 . However, when it was simultaneously applied with a sublethal concentration of monoterpene, its toxicity increased (LC50 with eugenol = 11.20 µg/cm2 , LC50 with menthyl acetate = 5.30 µg/cm2 , LC50 with menthol = 7.26 µg/cm2 ). When applied topically, the LD50 of azamethiphos was 7.85 µg/insect, but its toxicity drastically increased when it was applied together with sublethal doses of menthol (LD50 = 0.00016 µg/insect) or menthyl acetate (LD50 = 0.00051 µg/insect). The simultaneous application with eugenol did not significantly change azamethiphos toxicity (LD50 = 12.79 µg/insect). CONCLUSIONS The toxicity of azamethiphos in T. infestans was synergised when it was applied together with eugenol, menthol or menthyl acetate on a filter paper. However, only menthol and menthyl acetate synergysed azamethiphos when mixtures were topically applied. The drastic effects of menthol and menthyl acetate in topical application experiments should be further studied as they could be the basis for developing more efficient triatomicidal products with a lower content of conventional insecticides than those currently used for controlling T. infestans.
Collapse
Affiliation(s)
| | | | - Eduardo Nicolás Zerba
- UNIDEF-CITEDEF-CONICET-CIPEIN, Buenos Aires, Argentina.,Instituto de Investigación e Ingeniería Ambiental, Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Raúl Adolfo Alzogaray
- UNIDEF-CITEDEF-CONICET-CIPEIN, Buenos Aires, Argentina.,Instituto de Investigación e Ingeniería Ambiental, Universidad Nacional de San Martín, Buenos Aires, Argentina
| |
Collapse
|
7
|
Cáceres M, Guzmán E, Alvarez-Costa A, Ortega F, G. Rubio R, Coviella C, Santo Orihuela PL, Vassena CV, Lucia A. Surfactantless Emulsions Containing Eugenol for Imidacloprid Solubilization: Physicochemical Characterization and Toxicity against Insecticide-Resistant Cimex lectularius. Molecules 2020; 25:E2290. [PMID: 32414128 PMCID: PMC7287993 DOI: 10.3390/molecules25102290] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/01/2020] [Accepted: 05/12/2020] [Indexed: 11/16/2022] Open
Abstract
Synthetic insecticides have been used for a long time as one of the most effective tools for insect pest control. However, the re-emergence of insect pests and their fast development of resistance, as has occurred for pyrethroid-resistant bed bugs Cimex lectularius L., make it necessary to develop new and safe strategies for effective pest control. This has fostered the research on new eco-sustainable formulations based on essential oils, which allows reducing the impact associated with the intensive use of synthetic insecticides on the environment and their effects on human health. This research explores the stability of water/eugenol/ethanol surfactantless emulsions loaded with imidacloprid (0.003 wt%), and their toxicity against a resistant bed bug strain. The results have shown that these emulsions enable the solubilization of a poorly water-soluble drug, such as the imidacloprid, without any significant modification of their stability. Furthermore, the application of the obtained formulations against the pyrethroid-resistant bed bug results in mortality in the 50-85% range upon topical and spray applications, with the increase of the eugenol content enhancing the effectiveness of the formulations. It may be expected that the ternary water/eugenol/ethanol mixtures could be further developed in the preparation of ready to use formulations, enabling the dispersion of insecticides for pest control.
Collapse
Affiliation(s)
- Mariano Cáceres
- Centro de Investigaciones de Plagas e Insecticidas (UNIDEF–CITEDEF, CONICET), San Juan Bautista de La Salle 4397, Villa Martelli 1603, Buenos Aires, Argentina; (P.L.S.O.); (C.V.V.)
| | - Eduardo Guzmán
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain; (F.O.); (R.G.R.)
- Instituto Pluridisciplinar, Universidad Complutense de Madrid, Paseo Juan XXIII, nº1, 28040 Madrid, Spain
| | - Agustín Alvarez-Costa
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Ciudad Autónoma de Buenos Aires 1428, Argentina;
| | - Francisco Ortega
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain; (F.O.); (R.G.R.)
- Instituto Pluridisciplinar, Universidad Complutense de Madrid, Paseo Juan XXIII, nº1, 28040 Madrid, Spain
| | - Ramón G. Rubio
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain; (F.O.); (R.G.R.)
- Instituto Pluridisciplinar, Universidad Complutense de Madrid, Paseo Juan XXIII, nº1, 28040 Madrid, Spain
| | - Carlos Coviella
- Instituto de Ecología y Desarrollo Sustentable (INEDES, CONICET-UNLu), Ruta 5 y Avenida Constitución, Luján 6700, Buenos Aires, Argentina;
- Departamento de Ciencias Básicas, Universidad Nacional de Lujan, Ruta 5 y Avenida Constitución, Luján 6700, Buenos Aires, Argentina
| | - Pablo L. Santo Orihuela
- Centro de Investigaciones de Plagas e Insecticidas (UNIDEF–CITEDEF, CONICET), San Juan Bautista de La Salle 4397, Villa Martelli 1603, Buenos Aires, Argentina; (P.L.S.O.); (C.V.V.)
- Cátedra de Química Analítica Instrumental, -Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 954, Ciudad Autónoma de Buenos Aires 1113, Argentina
| | - Claudia V. Vassena
- Centro de Investigaciones de Plagas e Insecticidas (UNIDEF–CITEDEF, CONICET), San Juan Bautista de La Salle 4397, Villa Martelli 1603, Buenos Aires, Argentina; (P.L.S.O.); (C.V.V.)
- Instituto de Ingeniería e Investigaciones Ambientales, Universidad Nacional de San Martín, Campus Miguelete, 25 de Mayo y Francia, San Martín 1650, Buenos Aires, Argentina
| | - Alejandro Lucia
- Instituto de Ecología y Desarrollo Sustentable (INEDES, CONICET-UNLu), Ruta 5 y Avenida Constitución, Luján 6700, Buenos Aires, Argentina;
- Centro de Investigación en Sanidad Vegetal (CISaV), Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, Calles 60 y 119, La Plata 1900, Buenos Aires, Argentina
| |
Collapse
|
8
|
Reynoso MMN, Lucia A, Zerba EN, Alzogaray RA. The Octopamine Receptor Is a Possible Target for Eugenol-Induced Hyperactivity in the Blood-Sucking Bug Triatoma infestans (Hemiptera: Reduviidae). JOURNAL OF MEDICAL ENTOMOLOGY 2020; 57:627-630. [PMID: 31637445 DOI: 10.1093/jme/tjz183] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Indexed: 06/10/2023]
Abstract
Eugenol is a major component of the essential oils in cloves and other aromatic plants. In insects, it produces toxic effects and repellency, and there is evidence that its site of action is the octopamine receptor. The objective of the present study was to explore whether the octopamine receptor is involved in the hyperactivity produced by eugenol in the blood-sucking bug Triatoma infestans (Klug). This insect is the main vector of Chagas disease in Latin America. Four treatments were topically applied on third instar nymphs: 1) octopamine, 2) eugenol, 3) phentolamine hydrochloride (an antagonist of the octopamine receptor) followed by octopamine, and 4) phentolamine hydrochloride followed by eugenol. Both octopamine and eugenol hyperactivated the nymphs. However, pretreatment with phentolamine hydrochloride inhibited the hyperactivating effect of both compounds. These results are in agreement with previous works on Drosophila melanogaster (Meigen) (Diptera: Drosophilidae) and the American cockroach. They suggest that the octopamine receptor is a possible site of action for eugenol.
Collapse
Affiliation(s)
- Mercedes M N Reynoso
- Centro de Investigaciones de Plagas e Insecticidas, UNIDEF-CITEDEF-CONICET-CIPEIN, Juan B. de La Salle 4397, (B1603ALO) Villa Martelli, Buenos Aires, Argentina
| | - Alejandro Lucia
- Instituto de Ecología y Desarrollo Sustentable, Universidad Nacional de Luján (INEDES, CONICET-UNLu), Ruta 5 y Avenida Constitución, (B6700) Luján, Buenos Aires, Argentina
| | - Eduardo N Zerba
- Instituto de Investigación e Ingeniería Ambiental, Universidad Nacional de San Martín (UNSAM), (B1650HMQ) San Martín, Buenos Aires, Argentina
| | - Raúl A Alzogaray
- Centro de Investigaciones de Plagas e Insecticidas, UNIDEF-CITEDEF-CONICET-CIPEIN, Juan B. de La Salle 4397, (B1603ALO) Villa Martelli, Buenos Aires, Argentina
- Instituto de Investigación e Ingeniería Ambiental, Universidad Nacional de San Martín (UNSAM), (B1650HMQ) San Martín, Buenos Aires, Argentina
| |
Collapse
|