Assessment of acute toxicity of carbofuran in Macrobrachium olfersii (Wiegmann, 1836) at different temperature levels

Autor(es)

Barbieri, Edison ^[1] ; Moreira, Priscila ^[2] ; Luchini, Luiz Alberto ^[2] ; Hidalgo, Karla Ruiz ^[3] ; Munoz, Alejandro ^[3]

Afiliação do(s) autor(es)

^[1] Inst Pesca, APTA SAA SP Governo Estado Sao Paulo, BR-11990000 Sao Paulo - Brazil

^[2] Inst Biol, APTA SAA SP Governo Estado Sao Paulo, Sao Paulo - Brazil

^[3] Univ Costa Rica, Ctr Invest Contaminac Ambiental, San Pedro - Costa Rica

• Tipo de documento: Artigo Científico
• Fonte: TOXICOLOGY AND INDUSTRIAL HEALTH; v. 32, n. 1, p. 7-14, JAN 2016.
• Citações Web of Science: 6

Resumo

Carbofuran (2,3-dihydro-2,2-dimethyl-7-benzofuranyl methylcarbamate; C12H15NO3) is one of the most toxic carbamate pesticides. For acute toxicity of carbofuran, juveniles of Macrobrachiumolfersii were exposed to different concentrations of carbofuran using the static renewal method at different temperature levels (15, 20 and 25 degrees C) at pH 7.0. The main purpose of the present study was to detect the acute toxicity of carbofuran to M.olfersii and investigate its effects on oxygen consumption and ammonium excretion; these tests have not been carried out in this species before. First, the acute toxicity - median lethal concentration - of carbofuran to M. olfersii for 24, 48, 72 and 96h was examined, which resulted in the following values: 1.64, 1.22, 0.86 and 0.42mgL(-1), respectively. Furthermore, we also found that carbofuran caused an inhibition in oxygen consumption of 60.6, 65.3 and 66.2% with respect to the control. In addition, after separate exposures to carbofuran, elevations in ammonium excretion were more than 500% with respect to the control. (AU)

• Processo FAPESP: 07/50147-7 - Efeito do zinco e cádmio sobre o camarão rosa (Farfantepenaeus paulensis Pérez-Farfante, 1967, Decapoda, Peneidae, Crustacea), em três temperaturas e salinidade diferentes
• Beneficiário: Edison Barbieri
• Modalidade de apoio: Auxílio à Pesquisa - Regular