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Macro-elements in the hemolymph of adult Euschistus heros (Fabr.) (Hemiptera: Pentatomidae) treated with pyriproxyfen.
Cremonez, Paulo S G; Matsumoto, Janaina F; Andrello, Avacir C; Roggia, Samuel; Pinheiro, Daniela O; Neves, Pedro M O J.
Afiliación
  • Cremonez PSG; Department of Agronomy, State University of Londrina - UEL, Rod. Celso Garcia Cid, PR-445, Km 380, Mailbox: 10.011, 86057-970 Londrina, Paraná State, Brazil.
  • Matsumoto JF; Department of Agronomy, State University of Londrina - UEL, Rod. Celso Garcia Cid, PR-445, Km 380, Mailbox: 10.011, 86057-970 Londrina, Paraná State, Brazil.
  • Andrello AC; Department of Physics, State University of Londrina - UEL, Rod. Celso Garcia Cid, PR-445, Km 380, Cx. Postal 10.011, CEP 86057-970 Londrina, PR, Brazil. Electronic address: acandrello@uel.br.
  • Roggia S; Empresa Brasileira de Pesquisa Agropecuária - Embrapa Soja, Rod. Carlos João Strass, PR-545, s/n, Acesso Orlando Amaral, Mailbox: 23, Warta, 86001-970 Londrina, Paraná State, Brazil. Electronic address: samuel.roggia@embrapa.br.
  • Pinheiro DO; Department of Histology, State University of Londrina - UEL, Rod. Celso Garcia Cid, PR-445, Km 380, Cx. Postal 10.011, CEP 86057-970 Londrina, PR, Brazil. Electronic address: daniela_pinheiro@uel.br.
  • Neves PMOJ; Department of Agronomy, State University of Londrina - UEL, Rod. Celso Garcia Cid, PR-445, Km 380, Mailbox: 10.011, 86057-970 Londrina, Paraná State, Brazil. Electronic address: pedroneves@uel.br.
Comp Biochem Physiol C Toxicol Pharmacol ; 220: 47-51, 2019 Jun.
Article en En | MEDLINE | ID: mdl-30825637
Euschistus heros is an important pest in many crops in Brazil, and different control strategies, mainly involving chemicals, have been evaluated; however, the side effects of these chemicals on the balance of inorganic element levels in the hemolymph are unknown. Thus, the aim of this work was to determine the concentration of inorganic elements (focusing on macro-elements) in the hemolymph of female and male E. heros adults, after applying pyriproxyfen at a sublethal concentration (LC30 = 6.68 mL L-1 diluted in distilled water) to 4th instar nymphs, which were kept in controlled conditions. The hemolymph pool was removed 48 h after adult emergence, centrifuged and placed on an acrylic disk added with Gallium as internal standard for the analysis of total reflection X-ray fluorescence. Most of the elements in the control treatment did not differ between females and males. However, following insecticide application to females and males, respectively, there was a significant increase in sulfur (19 and 51%), chlorine (33 and 137%) and calcium (47 and 82%) in the hemolymph. The significantly higher increase in macro-elements in males' hemolymph indicates that the action of pyriproxyfen may be sex-specific. Phosphorus and potassium concentrations also differed between females and males in the control and treated groups. The observed variation in inorganic elements in the insect's hemolymph may be related to the unknown effects of pyriproxyfen, mainly on immune and reproductive performance.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Piridinas / Hemolinfa / Hemípteros / Insecticidas Límite: Animals Idioma: En Revista: Comp Biochem Physiol C Toxicol Pharmacol Asunto de la revista: FARMACOLOGIA / TOXICOLOGIA Año: 2019 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Piridinas / Hemolinfa / Hemípteros / Insecticidas Límite: Animals Idioma: En Revista: Comp Biochem Physiol C Toxicol Pharmacol Asunto de la revista: FARMACOLOGIA / TOXICOLOGIA Año: 2019 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Estados Unidos