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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Autónoma de Baja California
2008
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| Online Access: | https://www.redalyc.org/articulo.oa?id=48034307 |
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Table of Contents:
- Evaluation of the toxicity of an oil spill conducted through bioassays using the fish Solea senegalensis ML González de Canales TA DelValls MJ Salamanca N Jiménez-Tenorio Ciencias de la Tierra fuel sole Bioassay sediment biomarkers The toxicity produced by fuel pollutants was evaluated through bioassays using the Senegalese sole Solea senegalensis.Juveniles were exposed for 21 days to different dilutions obtained by mixing fuel extracted from the Prestige oil tanker and sediment from a clean area of Cádiz Bay. After the exposure period, three biomarkers were analyzed (7-ethoxyresorufin-Odeethylase[EROD], glutathione S-transferase [GST], and glutathione reductase [GR] enzymatic activity), as well as thehistopathology of two of the main target organs (gills and liver). Significant (P < 0.05) biomarker inductions were observed in the exposed fish analyzed on day 21 relative to the control group (day zero). Lesions were detected in both organs studied, but the liver was the most affected. The frequency of appearance of the lesions was greater in the samples containing higherconcentrations of polycyclic aromatic hydrocarbons (PAHs) and metals. The results showed significant correlations between the total PAH concentrations and GST, GR, and EROD enzymatic activity, with correlation coefficients of R = 0.96 for GST,R = 0.82 for GR, and R = 0.60 for EROD. 2008 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48034307 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.3 Vol.34