Effects on Biomass of Cubaris murina Brandt (Crustacea: Isopoda) Exposed to Soil Contaminated With Glyphosate in Laboratory Studies
DOI:
https://doi.org/10.5132/jbse.2006.01.004Palabras clave:
ecotoxicology, isopoda, glyphosate, biomassResumen
Terrestrial isopods play an important role in the cycling of nutrients, contributing to the first processes of litter decomposition. In this work, organisms of Cubaris murina from laboratory cultures were used in ecotoxicity tests, to assess their sensibility to glyphosate how it affects their biomass. The contaminant solutions were prepared by herbicide Roundup®. The initial nominal concentrations were 4.8, 9.6, 14.4 and 19.2 mg glyphosate/g soil. Ten offspring of 2 to 4 days old were exposed in each treatment and in one control. All the treatments, in quadruplicate, received regularly sprays of distilled water. After five weeks, the isopods were weighed, and the mean weight of the isopods of each treatment was compared to the control, using ANOVA. Significant differences in relation to control (p < 0.001) were encountered on 14.4 and 19.2 mg gli/g soil in two repetitions of the experiment. Effects on biomass showed more sensibility than 7-d-LC50 of glyphosate to C. murina (35.5 mg gli/g soil).
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Derechos de autor 2006 Ecotoxicology and Environmental Contamination
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