Effects of the organophosphorus pesticide Folisuper 600 (methyl parathion) on the heart function of bullfrog tadpoles, Lithobates catesbeianus (Shaw, 1802)

Brazilian Journal of Biology

M. J. Costa¹  L. R. Ribeiro¹  R. F. Salla¹  F. U. Gamero¹  L. M. L. M. Alves¹  E. C. M. Silva-zacarin¹ 

关键词: methyl parathion;    cardiac performance;    bullfrog tadpoles;    Lithobates catesbeianus (Rana catesbeiana);    metil paration;    desempenho cardíaco;    girinos de rã-touro;    Lithobates catesbeianus (Rana Catesbeiana);   

DOI  :  10.1590/1519-6984.08314

来源: SciELO

【 摘 要 】

Abstract The aim of this work was to evaluate whether the heart function of bullfrog tadpoles (25 Gosner stage) is affected by their acute exposure (48 h) to a sub-lethal concentration (10 µg.L–1) of the active principle of the organophosphorus pesticide Folisuper 600R (methyl parathion - MP). Our results demonstrated that MP causes not only a reduction in tadpoles’ cardiac ventricular mass, resulting in a marked reduction in their cardiac twitch force, but also impairs their swimming performance, irrespective of increasing their heart rate. Together, these findings indicate that low and realistic concentration of MP have a negative impact on tadpoles’ performance, jeopardizing their survival.

【 授权许可】

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