Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/49368
Título: Synergism and unintended effects of the association between imidacloprid and sodium chloride (NaCl) on the management of Euschistus heros
Palavras-chave: Pentatomid pest species
Neonicotinoids
Sexual behavior
Reproductive fitness
Data do documento: 6-Ago-2020
Editor: Wiley
Citação: RODRIGUES, H. S. et al. Synergism and unintended effects of the association between imidacloprid and sodium chloride (NaCl) on the management of Euschistus heros. Pest Management Science, [S.l.], v. 77, n. 1, p. 417-424, Ago. 2020. DOI: 10.1002/ps.6032.
Resumo: BACKGROUND: the use of insecticidal solutions containing sodium chloride (NaCl) has been proposed as a more environmen-tally friendly alternative to managing stink bug infestations of Neotropical soybeanfields. The potential sublethal and unde-sirable effects of this practice have, however, been overlooked, especially with novel insecticides. Here, we have evaluatedexperimentally whether the addition of NaCl (0.5%w/v) to imidacloprid-containing solutions could alter insecticide toxicityand modify the reproductive responses of the Neotropical brown stink bugEuschistus heros. RESULTS: addingNaCltoimidaclopridsolutionssignificantly increased imidacloprid toxicity againstE. heros. The exposure toE. herosto sublethal concentrations of imidacloprid affected the insect'smating abilities in a concentration-dependent manner. The additionof NaCl to solutions containing imidacloprid at concentrations as low as 0.126∼ga.i.cm−2(i.e. the equivalent to 3% offield rate rec-ommendation) also impacted the sexual behavior ofE. heros, reducing mating duration. NaCl-exposed stink bugs, however, exhibitedhigher fecundity and fertility rates than those insects that were unexposed to NaCl or those that were exposed to sublethal levels ofimidacloprid only. CONCLUSIONS: the addition of low amounts of NaCl resulted in a higher toxicity of imidacloprid. This practice, however, canalso lead to undesirable effects as increasing reproductive output of E. herosthat can potentially compromise the managementof these insect pests.
URI: https://onlinelibrary.wiley.com/doi/10.1002/ps.6032
http://repositorio.ufla.br/jspui/handle/1/49368
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