TOXICIDADE DE OXICLORETO DE COBRE E MANCOZEB PARA EISENIA FETIDA (OLIGOCHAETA)

Authors

  • Marcos Vinicius Bastos Garcia
  • Camila Correia Mestrinho
  • Cintia Carla Niva
  • Terezinha Batista Garcia
  • Jörg Römbke

DOI:

https://doi.org/10.56083/RCV3N8-172

Keywords:

Ecotoxicologia, Fungicidas, Risco Ambiental, Minhoca, Gleissolo

Abstract

Os fungicidas a base de cobre e manganês são utilizados nas áreas de várzea próximas a Manaus - Amazonas, para controle de doenças em plantas cultivadas. Esses agrotóxicos, mesmo quando usados adequadamente, podem vir a se acumular no ambiente e tornar-se um risco para a atividade biológica do solo, a qual é fundamental para a exploração agrícola sustentável a longo prazo. Diante disto, para o manejo da qualidade do solo, é necessário o conhecimento do risco ecotoxicológico desses fungicidas. Para tanto, a toxicidade dos fungicidas mancozeb e oxicloreto de cobre para Eisenia fetida, espécie de minhoca utilizada como organismo indicador, foi investigada. Os ensaios foram realizados em laboratório utilizando solo artificial tropical (SAT) e solo natural (Gleissolo), para os parâmetros letalidade e comportamento de fuga (rejeição) ao solo contaminado baseados no protocolo OECD número 207/1984 e ISO17512-1/2008, respectivamente. Devido ao alto teor de silte no gleissolo, adicionou-se areia (1:1) para deixar o substrato com friabilidade que possibilitasse incorporação dos produtos químicos. Ambos os fungicidas apresentaram baixa toxicidade para a sobrevivência de minhocas. Entretanto, os ensaios de fuga mostraram que as minhocas evitaram solos contaminados com esses fungicidas, mesmo quando em baixas concentrações. Os ensaios de fuga devem ser usados para análise de risco de agrotóxicos para o solo, já que estes apresentam maior sensibilidade e relevância ecológica, se comparados aos ensaios de toxicidade sobre a sobrevivência.

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Published

2023-08-29

How to Cite

Garcia, M. V. B., Mestrinho, C. C., Niva, C. C., Garcia, T. B., & Römbke, J. (2023). TOXICIDADE DE OXICLORETO DE COBRE E MANCOZEB PARA EISENIA FETIDA (OLIGOCHAETA). Revista Contemporânea, 3(8), 13087–13106. https://doi.org/10.56083/RCV3N8-172

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