Data/hora: 19/06/2024 19:34:40

Biblioteca(s): | Embrapa Arroz e Feijão; Embrapa Pesca e Aquicultura.
Data corrente: | 28/10/2021
Data da última atualização: | 14/07/2022
Autoria: | VIEIRA, J. L.; CAMPOS, S. O.; SMAGGHE, G.; FRAGOSO, D. B.; BARRIGOSSI, J. A. F.; GUEDES, R. N. C.
Afiliação: | JULIANA L. VIEIRA, UFV; S. O. CAMPOS, UFV; GUY SMAGGHE, GHENT UNIVERSITY, Ghent-Belgica; DANIEL DE BRITO FRAGOSO, CNPASA; JOSE ALEXANDRE F BARRIGOSSI, CNPAF; RAUL NARCISO C. GUEDES, UFV.
Título: | Area-wide survey of thiamethoxam resistance and control failure likelihood in the rice stink bugs Oebalus poecilus and O. ypsilongriseus.
Ano de publicação: | 2022
Fonte/Imprenta: | Journal of Pest Science, v. 95, p. 1151-1161, June 2022.
ISSN: | 1612-4758
DOI: | https://doi.org/10.1007/s10340-021-01445-5
Idioma: | Inglês
Conteúdo: | Insecticide resistance survey is an in-situ biomonitoring method to assess potential impact of pesticides that exhibit direct economic consequences when leading to control failure of insect pest species. Nonetheless, the latter phenomenon is frequently neglected. Their spatial dependence and mapping are also seldom considered and when complexes of related pest species are involved, such as the rice stink bugs from the Neotropics, Oebalus poecilus, and O. ypsilongriseus, the scenario is even worst. Insecticide use is common against both species, particularly with the neonicotinoid thiamethoxam, and despite suspicion of a shift in O. poecilus historical dominance and complaints of control failure, the role of this insecticide in this context was never tested. Thus, we screened populations from both species for thiamethoxam resistance within rice fields from central Brazil. The levels of thiamethoxam resistance and control failure likelihood were recorded and their spatial dependence was tested and geographically mapped. The thiamethoxam potency was similar between species, which also exhibited overlapping levels of resistance. Thus, this insecticide does not seem involved in eventual shifts in species dominance and the occurrence of O. ypsilongriseus is frequent. Thiamethoxam resistance was detected in both species, nearly half of the populations of O. poecilus and about a third of O. ypsilongriseus, but at low levels (<ten-fold). As a consequence, the risk of control failure with thiamethoxam was also low. Spatial dependence was significant for both species and phenomena (i.e., thiamethoxam resistance and control failure), prevailing in about the same area and likely reflecting the local pattern of insecticide use.
Palavras-Chave: | Neotropical rice; Spatial survey.
Thesagro: | Arroz; Inseticida; Oryza Sativa; Praga de Planta; Resistência Química.
Thesaurus Nal: | Insecticide resistance; Insects; Neonicotinoid insecticides; Oebalus poecilus; Oebalus ypsilongriseus; Pest management; Rice.
Categoria do assunto: | O Insetos e Entomologia
Registro original: | Embrapa Pesca e Aquicultura (CNPASA)

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