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Acute Toxicity of Fresh and Aged Residues of Pesticides to the Parasitoid Tamarixia radiata and to the HLB-Bacteria Vector Diaphorina citri.
Beloti, V H; Alves, G R; Moral, R A; Demétrio, C G B; Yamamoto, P T.
Afiliação
  • Beloti VH; Dept of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/Univ of São Paulo (ESALQ/USP), 13418-900, Piracicaba, São Paulo, Brasil. vitorbeloti@usp.br.
  • Alves GR; Dept of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/Univ of São Paulo (ESALQ/USP), 13418-900, Piracicaba, São Paulo, Brasil.
  • Moral RA; Dept of Agricultural Statistics and Experimentation, "Luiz de Queiroz" College of Agriculture/Univ of São Paulo (ESALQ/USP), Piracicaba, São Paulo, Brasil.
  • Demétrio CGB; Dept of Agricultural Statistics and Experimentation, "Luiz de Queiroz" College of Agriculture/Univ of São Paulo (ESALQ/USP), Piracicaba, São Paulo, Brasil.
  • Yamamoto PT; Dept of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/Univ of São Paulo (ESALQ/USP), 13418-900, Piracicaba, São Paulo, Brasil.
Neotrop Entomol ; 47(3): 403-411, 2018 Jun.
Article em En | MEDLINE | ID: mdl-29222706
One method for controlling the Asian citrus psyllid (ACP) Diaphorina citri Kuwayama, the vector of the putative causal agent of Huanglongbing, uses the parasitoid Tamarixia radiata (Waterston). However, the general intensive use of insecticides has reduced the numbers of this parasitoid. This study evaluated the effect of the residual action of 24 insecticides on T. radiata and also determined the differential toxicity of insecticides to D. citri and T. radiata, using three bioassays. In the first, when adults of the parasitoid were exposed to residues of the 24 insecticides, ten were considered short-life (class 1), six slightly persistent (class 2), five moderately persistent (class 3), and three insecticides were considered persistent (class 4), under the IOBC/WPRS classification system. The second bioassay evaluated the sublethal concentrations of the persistent insecticides (formetanate, dimethoate, spinosad). Increasing the concentrations of the insecticides increased the number that were classified as persistent. In the third bioassay, evaluation of the differential toxicity of eight insecticides to the ACP and the parasitoid showed that chlorpyrifos and bifenthrin were more harmful to T. radiata. Therefore, these two insecticides are not recommended for application at the time of parasitoid release. Cypermethrin, imidacloprid, and dimethoate caused higher mortality of D. citri and are most often recommended in IPM programs. The choice of an insecticide for the control of citrus pests must be made with care, aiming to preserve the natural enemies in the ecosystem, and thereby contribute to the success of biological control.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Hemípteros / Himenópteros / Inseticidas Limite: Animals Idioma: En Revista: Neotrop Entomol Assunto da revista: BIOLOGIA Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Hemípteros / Himenópteros / Inseticidas Limite: Animals Idioma: En Revista: Neotrop Entomol Assunto da revista: BIOLOGIA Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda