Journal
ENVIRONMENTAL POLLUTION
Volume 159, Issue 6, Pages 1709-1714Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2011.02.037
Keywords
Fish; Jenynsia multidentata; Endosulfan; Endosulfan sulfate; Bioaccumulation
Categories
Funding
- Agencia Nacional de Promocion Cientifica y Tecnologica (FONCyT) [PICT-2007-01209]
- Secretaria de Ciencia y Tecnica (SECyT)
- National Research Council (CONICET-PIP)
- CONICET
- Doctorado en Ciencias Biologicas, (FCEFyN - UNC)
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The study reports the accumulation, distribution and metabolism of technical endosulfan in Jenynsia multidentata. Adult females were exposed to acute sublethal concentrations (0.072, 0.288 and 1.4 mu g L-1). After 24 h, fish were sacrificed and gills, liver, brain, intestine and muscle were removed. Results show that both isomers of technical-grade endosulfan (alpha- and beta-) are accumulated in fish tissues and biotransformation to endosulfan sulfate occurs at all concentrations tested. Significantly differences in endosulfan accumulation were only found at 1.4 mu g L-1 but not between the lowest concentrations. However a similar distribution pattern was observed at all exposure levels where liver, intestine and brain had the highest levels of alpha-, beta-endosulfan and endosulfan sulfate. Moreover, liver and brain showed the highest endosulfan sulfate:alpha-endosulfan ratios due to high biotransfomation capacity. J. multidentata demonstrated to be a sensitive species under exposure to technical endosulfan and, therefore, could be used to assess aquatic pollution. (C) 2011 Elsevier Ltd. All rights reserved.
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