Toxicidad aguda del Herbicida químico Glifosan en larvas de la rana cubana: Osteopilus septentrionalis
nº16 [jun - ag 2008 ] Retel31/08/2008
María Elisa Alea Reyes, Onelio Carballo Hondal, José Trujillo Hernández, María Antonia Torres Alemán
Instituto de Farmacia y Alimentos. Universidad de la Habana. Calle 222 y 27 La Coronela. La Lisa. Ciudad de La Habana Cuba. Teléfono 250-11-70. e-mail: alea@oc.minjus.cu; mariatorres@infomed.sld.cu (y otras instituciones).
# Resumen
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Palabras clave: Osteopilus septentrionalis, Glifosan, Herbicida, Toxicidad Aguda.
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# Abstract
Acute toxicity of chemical herbicide Glyphosan in the cuban frog larvae : Osteopilus septentrionalis.
The Glyphosan is a chemical herbicide of post-emergence systemic action, whose formulation contains 41% active substance Glyphosate as isopropilamine salt and 59% of additives such as surfactants, solvents and adyuvants.The toxicity of different formulated products containing Glyphosate to aquatic organisms has been widely reported, however it was considered as low with respect to the end formulation Glyphosan. Therefore, the aim of this study was to determine the toxicity of Glyphosan to larvae of frog, Osteopilus septentrionalis.A system of static test of 96 hours was development, where the final formulation Glyphosan and active substance Glyphosate were evaluated at concentrations of 15, 17, 19, 22, 28 mg/L and 0.01, 0.1, 1.0, 10.0, 100 mg/L respectively. The analyzed variables were as follows: observation for signs of toxicity, LC50 and mortality. During the time of testing, the presence of signs of toxicity was revealed in the cluster treated with end formulation Glyphosan at concentrations of 19, 22 and 25 mg/L, and showed 100% of mortality in larvae of Osteopilus septentrionalis at concentration of 28 mg/L with an LC50 of 20.817 mg/L at 96 hours in stage 25.The toxicity and mortality data showed that the active substance Glyphosate was non toxic to larvae of O. septentrionalis at assay concentrations.
Keywords: Osteopilus septentrionalis, Glyphosan, herbicide, acute toxicity.
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The Glyphosan is a chemical herbicide of post-emergence systemic action, whose formulation contains 41% active substance Glyphosate as isopropilamine salt and 59% of additives such as surfactants, solvents and adyuvants.The toxicity of different formulated products containing Glyphosate to aquatic organisms has been widely reported, however it was considered as low with respect to the end formulation Glyphosan. Therefore, the aim of this study was to determine the toxicity of Glyphosan to larvae of frog, Osteopilus septentrionalis.A system of static test of 96 hours was development, where the final formulation Glyphosan and active substance Glyphosate were evaluated at concentrations of 15, 17, 19, 22, 28 mg/L and 0.01, 0.1, 1.0, 10.0, 100 mg/L respectively. The analyzed variables were as follows: observation for signs of toxicity, LC50 and mortality. During the time of testing, the presence of signs of toxicity was revealed in the cluster treated with end formulation Glyphosan at concentrations of 19, 22 and 25 mg/L, and showed 100% of mortality in larvae of Osteopilus septentrionalis at concentration of 28 mg/L with an LC50 of 20.817 mg/L at 96 hours in stage 25.The toxicity and mortality data showed that the active substance Glyphosate was non toxic to larvae of O. septentrionalis at assay concentrations.
Keywords: Osteopilus septentrionalis, Glyphosan, herbicide, acute toxicity.
Download PDF (73 KB)