Systematic literature review and meta-analysis of phytochemicals as insecticides: trends and knowledge gaps

• Ano de defesa: 2022
• Autor(a) principal: Collares, Lara Jardim
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: eng
• Instituição de defesa: Universidade Federal de Viçosa
• Palavras-chave em Português: Iseticidas vegetais - Bibliografia; Fitoquímicos; Insetos; Entomologia Agrícola
• Link de acesso: https://locus.ufv.br//handle/123456789/32145; https://doi.org/10.47328/ufvbbt.2022.481

To understand the context, the biases, and knowledge gaps of research with insecticides of botanical origin, this literature review was carried out assessing 76 years of research and covering 4,780 scientific articles for qualitative and quantitative analyses, including three meta-analyses. The study pointed out that the main botanical insecticides belong to the following major chemical groups: terpenoids, terpenes and carbonyl, which were all mainly tested in Coleoptera, Lepidoptera and Diptera insects. The survey also shows that despite the exponential growth of publications over the years, there are some biases and gaps that require attention. The evident focus on mortality estimates neglects the assessment of sublethal effects. In addition, most studies use only one group of species as experimental models (stored grain pests), which limits the applicability and representativeness of the results and information generated. As a result, the most common mode of exposure is by fumigation and contact. Thus, there is a predominance of estimates of lethal concentrations rather than lethal doses in these studies. Therefore, based on the evidence gathered, we recognize the need of studies with a broader range of insect species and the need to identify and characterize the molecules responsible for the insecticidal effect. This will allow us to circumvent current biases and recognize the main patterns of the relationship between the origin and structure of phytochemicals and their physiological and behavioral effects on insects. Keywords: Botanic molecules. Insect. Review.