The toxicity of mining drilling mud was evaluated based on the lethal effect and evasion in the terrestrial bioindicator Porcellio laevis (Latreille, 1804). The following treatments were considered: drilling mud, suspended phase of drilling mud and mining drilling fluid in acute toxicity tests and short evasion test. Toxicity tests did not show a lethal effect in drilling mud, in the suspended phase of drilling mud, and in mineral drilling fluid in P. laevis. In the evasion tests, considering uncontrolled humidity conditions, it was observed that there was a preference for P. laevis towards the land with the presence of drilling mud. However, considering controlled humidity conditions, the preference of P. laevis towards the muddy land was confirmed. The results of this investigation allow documenting a protocol to evaluate the toxicity of mining drilling muds and serve as a reference fo...

En la presente tesis se evaluó la toxicidad de los lodos de perforación minera en el bioindicador Porcellio laevis (Latreille, 1804) en periodos de 24, 48 y 72 horas de exposición, considerando los tratamientos para la muestra A de 0,07 g.g-1, 0,14 g.g-1 y 0,27 g.g-1, mientras que para la muestra B y C fue de 0,1 mL.g-1, 0,2 mL.g-1 y 0,4 mL.g-1, representados por el lodo de perforación, la fase suspendida del lodo de perforación y el fluidos de perforación respectivamente, en los cuales no se observó un efecto letal significativo en el isópodo terrestre, la concentración letal media (CL50) no se determinó porque no se encontró una relación entre las concentraciones y la mortalidad. Por otro lado, en las pruebas de evasión se observó que hubo atracción por la tierra con lodo en comparación con el control; ello indicaría que el Porcellio laevis no presentó evasión del su...

The toxicity of mining drilling mud was evaluated based on the lethal effect and evasion in the terrestrial bioindicator Porcellio laevis (Latreille, 1804). The following treatments were considered: drilling mud, suspended phase of drilling mud and mining drilling fluid in acute toxicity tests and short evasion test. Toxicity tests did not show a lethal effect in drilling mud, in the suspended phase of drilling mud, and in mineral drilling fluid in P. laevis. In the evasion tests, considering uncontrolled humidity conditions, it was observed that there was a preference for P. laevis towards the land with the presence of drilling mud. However, considering controlled humidity conditions, the preference of P. laevis towards the muddy land was confirmed. The results of this investigation allow documenting a protocol to evaluate the toxicity of mining drilling muds and serve as a reference fo...