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Exposure assessment to glyphosate of two species of Annelids

Ubicación: 331 BRE
Colaborador(es): García Torres, Tristan P. School of Agriculture, University of Buenos Aires, Av. San Martín 4453, 1417 Buenos Aires, Argentina | Giuffré, Lidia L. School of Agriculture, University of Buenos Aires, Av. San Martín 4453, 1417 Buenos Aires, Argentina | Romaniuk, Romina Ingrid. School of Agriculture, University of Buenos Aires, Av. San Martín 4453, 1417 Buenos Aires, Argentina | Ríos, Ruth Paola. School of Agriculture, University of Buenos Aires, Av. San Martín 4453, 1417 Buenos Aires, Argentina | Pagano, Eduardo Antonio. School of Agriculture, University of Buenos Aires, Av. San Martín 4453, 1417 Buenos Aires, Argentina.
ISSN: 1432-0800.Tipo de material: Artículos y capítulos. Recurso electrónico.Tema(s): GLYPHOSATE | EARTHWORMS | ECOTOXICOLOGY | EISENIA FETIDA | OCTOLASION TYRTAEUM | Recursos en línea: Haga clic para acceso en línea | LINK AL EDITOR En: Bulletin of environmental contamination and toxicology Vol.93, no.2 (2014), p.209-214, tbls., grafs.Resumen: Adult mortality, biomass, fecundity and viability of cocoons were studied in Eisenia fetida and Octolasion tyrtaeum, in response to glyphosate exposure in soil. Exposure tests were carried out following USEPA procedure, with five concentrations of glyphosate in soil and a control. O.tyrtaeum was more sensitive to the highest concentration of glyphosate (50,000 mg kg-1), with 100 % mortality by day 7 of exposure, compared with 71 % for E. fetida. Although biomass of O. tyrtaeum was significantly different between the control and 5,000 mg kg-1 dose at day 14, E. fetida was not affected at that concentration, and only showed a significant weight loss after 7 days of exposure to 50,000 mg kg-1. Adverse effects upon adult fecundity and cocoon viability were observed at glyphosate concentrations of 5,000 mg kg-1 and above. Adverse effects were observed at concentrations that greatly exceeded the recommended field application rates of glyphosate.
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Adult mortality, biomass, fecundity and viability of cocoons were studied in Eisenia fetida and Octolasion tyrtaeum, in response to glyphosate exposure in soil. Exposure tests were carried out following USEPA procedure, with five concentrations of glyphosate in soil and a control. O.tyrtaeum was more sensitive to the highest concentration of glyphosate (50,000 mg kg-1), with 100 % mortality by day 7 of exposure, compared with 71 % for E. fetida. Although biomass of O. tyrtaeum was significantly different between the control and 5,000 mg kg-1 dose at day 14, E. fetida was not affected at that concentration, and only showed a significant weight loss after 7 days of exposure to 50,000 mg kg-1. Adverse effects upon adult fecundity and cocoon viability were observed at glyphosate concentrations of 5,000 mg kg-1 and above. Adverse effects were observed at concentrations that greatly exceeded the recommended field application rates of glyphosate.

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