Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/18777
Tipo: Artigo
Título: Lethal and sublethal effects of seven insecticides on three beneficial insects in laboratory assays and field trials
Autor(es): Fernandes, Maria E.S.
Alves, Flávia M.
Pereira, Renata C.
Aquino, Leonardo A.
Fernandes, Flávio L.
Zanuncio, José C.
Abstract: Lethal and sublethal effects of insecticides on target and non-target arthropods are a concern of pest management programs. Cycloneda sanguinea, Orius insidiosus and Chauliognathus flavipes are important biological control agents for aphids, whitefly, lepidopterus eggs, thrips and mites. All three test species were subjected to a toxicity study using the insecticides acephate, bifenthrin, chlorantraniliprole, chlorpyrifos, deltamethrin, imidacloprid, and thiamethoxam. Experiments were done in the lab and field. In the laboratory we evaluated the mortality and sublethal effects of the concentration that killed 20% of the population (LC20) on feeding, repellence and reproduction of the species tested. The lethal effects of these insecticides at the recommended doses was evaluated in the field. Concentration-response bioassays indicated chlorantraniliprole had the lowest toxicity, while chlorpyrifos and acephate were the most toxic. Test species exposed to filter paper surfaces treated with pyrethroids, neonicotinoids and organophosphates were repelled. On the other hand, test species were not repelled from surfaces treated with chlorantraniliprole. Chlorantraniliprole therefore seemed to be the least dangerous insecticide for these three beneficial arthropod test species.
Palavras-chave: Agroecosystems
Ecotoxicology
Natural enemies
Pesticides
Toxicity
Editor: Chemosphere
Tipo de Acesso: Elsevier Ltd.
URI: https://doi.org/10.1016/j.chemosphere.2016.04.115
http://www.locus.ufv.br/handle/123456789/18777
Data do documento: 6-Mai-2016
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