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| Autor(es): Mostrar menos - |
Alvarez, Daniel de Lima
;
Hayashida, Rafael
;
Cavallaro, Michael C.
;
Santos, Daniel Mariano
;
Santos, Lucas Moraes
;
Mueller, Cristiane
;
Watanabe, Luis Fernando Maranho
;
Bello, Vinicius Henrique
;
Krause-Sakate, Renate
;
Hoback, William Wyatt
;
Oliveira, Regiane Cristina de
Número total de Autores: 11
|
| Tipo de documento: | Artigo Científico |
| Fonte: | INSECTS; v. 15, n. 9, p. 10-pg., 2024-09-01. |
| Resumo | |
Simple Summary: Previous studies have documented regional susceptibility of the silverleaf whitefly (Bemisia tabaci) to common insecticide active ingredients among populations with different bacterial endosymbionts. Here, we tested the efficacy of 11 different insecticides on three populations of silverleaf whitefly found in Brazil with varying bacterial communities. Significant differences among population responses were measured for four of the tested active ingredients, two of which were neonicotinoids. DNA sequencing detected two types of bacteria in the population more susceptible to insecticides, showing a linkage of host, symbiote, and insecticide resistance. The silverleaf whitefly, Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae), is a significant agricultural pest worldwide, impacting a variety of crop yields. Since the introduction of B. tabaci Mediterranean (MED) species in Brazil, limited research has measured the relative efficacy of the primary insecticides used in whitefly management. This study evaluated the susceptibility of three distinct B. tabaci MED populations to 11 insecticide active ingredients and characterized the bacterial endosymbionts within each population. The insecticides tested were acetamiprid, bifenthrin, cyantraniliprole, diafenthiuron, spiromesifen, imidacloprid, pymetrozine, pyriproxyfen, sulfoxaflor, and thiamethoxam. Results showed varying LC50 and LC90 values among tested insecticides and populations. Notably, populations varied in response to imidacloprid and thiamethoxam with some populations having a 6x higher tolerance. Sequencing data of endosymbionts revealed that individuals from the most susceptible B. tabaci population harbored Rickettsia and Arsenophonus, whereas these bacteria were not detected in the resistant populations. These findings highlight the need for frequent insecticide toxicity bioassays of distinct B. tabaci populations and the adoption of integrated pest management strategies to preserve the efficacy of insecticides for B. tabaci control. Additionally, the role of infection by endosymbionts to alter susceptibility should be further explored. (AU) | |
| Processo FAPESP: | 18/02317-5 - Centro de Excelência em Controle Biológico |
| Beneficiário: | José Roberto Postali Parra |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Centros de Pesquisa Aplicada |
| Processo FAPESP: | 19/10736-0 - Tomada de decisão para liberação de Telenomus podisi (Ashmead) (Hymenoptera: Scelionidae) para o controle de Euschistus heros (Fabricius) (Hemiptera: Pentatomidae) na cultura da soja |
| Beneficiário: | Jéssica Lueli Niitsu |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |
| Processo FAPESP: | 18/19782-2 - ESTOCAGEM DE OVOS DE Euschistus heros (Fabricius) (Hemiptera: Pentatomidae) VISANDO MAXIMIZAÇÃO DE PRODUÇÃO DO PARASITOIDE DE OVOS Telenomus podisi Ashmead (Hymenoptera: Platygastridae) |
| Beneficiário: | Wellington Souza de Macedo Almeida |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |