Cited by 52Insect Pest Control StrategiesInsect-Plant Interactions and ControlEnvironmental Toxicology and Ecotoxicology

Disentangling the ecotoxicological selectivity of clove essential oil against aphids and non-target ladybeetles

Toledo, Pedro F.S., Viteri Jumbo, Luis O., Rezende, Sarah M., Haddi, Khalid, Silva, Bruno A., Mello, Tarcísio S., Della Lucia, Terezinha M.C., Aguiar, Raimundo W.S., Smagghe, Guy, Oliveira, Eugenio E.·2020·Science of The Total Environment

Abstract

The plant-based biopesticides have been proposed as insect pest control tools that seem to be safer for the environment and human health when compared to synthetic conventional molecules. However, such assumptions are generally made without considering the absence of detrimental effects on sublethally-exposed non-target organisms or showing the physiological basis of the selective action of such botanical products. Thus, by using in silico-based and in vivo toxicological approaches, the present investigation aimed to disentangle the ecotoxicological selectivity of clove, Syzygium aromaticum, essential oil against the aphid Rhopalosiphum maidis and the non-target ladybeetle, Coleomegilla maculata. We also investigated whether the sublethal exposure to clove essential oil would affect the locomotory and predatory abilities of C. maculata. We found that the clove essential oil concentration estimated to kill 95% (LC 95: 0.17 μL/cm 2) of the aphids was lethal to <18% of C. maculata. Indeed, our in silico results reinforced such differential susceptibility, as it predicted that eugenol and β-caryophyllene (i.e., the clove essential oil major components) bound to three potential molecular targets (i.e., transient receptor potential (TRP) channels, octopamine, and gamma-aminobutyric acid (GABA) receptors) of the aphids but only to the octopamine receptors of the ladybeetles. Additionally, the ladybeetles that were exposure to the clove essential oil exhibited unaffected abilities to locomote and to prey upon R. maidis aphids when compared to unexposed ladybeetles. Thus, by displaying lower toxicity against the ladybeetles, the clove essential oil represents a safer alternative tool to be integrated into programs aiming to manage aphid infestations.

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Crossref · 10.1016/j.scitotenv.2020.137328

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  • Toledo et al. reported that CEO had activity against aphids, but not against ladybugs; they reported an LC95 of 0.17 μL/cm2 for aphids, while the same dose only had a lethality of less than 18% for Corymbia maculata; ladybugs exposed to CEO did not exhibit impaired locomotion ability.

    “Toledo et al. [104] reported that it had activity against aphids, but not against ladybugs. They reported an LC95 of 0.17 μL/cm2 for aphids, while the same dose only had a lethality of less than 18% for Corymbia maculata. The ladybugs that were exposed to CEO did not exhibit impaired locomotion ability.”

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Authors
Toledo, P. F. S., Viteri Jumbo, L. O., Rezende, S. M., Haddi, K., Silva, B. A., Mello, T. S., Della Lucia, T. M. C., Aguiar, R. W. S., Smagghe, G., & Oliveira, E. E.
Affiliations
  • Universidade Federal de Viçosa (BR)
  • Universidade Federal de Lavras (BR)
  • Southwest Bahia State University (BR)
  • Ghent University (BE)
Corresponding author
Oliveira, Eugenio E.
Venue
Science of The Total Environment
Publisher
Elsevier BV
Published
2020-05
Volume
718
Pages
137328
ISSN
0048-9697 (ISSN-L)
OpenAlex
W3005664549
Cited by
52
References
85
Citations by year
2026: 7 · 2025: 8 · 2024: 7 · 2023: 11 · 2022: 11 · 2021: 6 · 2020: 2
FWCI
4.84
Type
journal article
Language
en
Open access
closed
Locations
  • The Science of The Total Environment (publishedVersion)
  • PubMed (publishedVersion)
  • Ghent University Academic Bibliography (Ghent University) (submittedVersion)
Funders
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
  • Fundação de Amparo à Pesquisa do Estado de Minas Gerais
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Insect Pest Control Strategies
  • Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect-Plant Interactions and Control
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Environmental Toxicology and Ecotoxicology
Keywords
clove oil, Syzygium aromaticum, Rhopalosiphum maidis, Coleomegilla maculata, non-target effects, sublethal exposure, biopesticides, eugenol, β-caryophyllene, octopamine receptor, GABA receptors, TRP channels, predatory behavior, aphid control
MeSH terms
Animals, Aphids, Insect Control, Oils, Volatile, Syzygium, Clove Oil

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