2024-03-29T13:35:09Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/434312018-08-07T10:37:45Zcom_10261_14com_10261_8col_10261_267
http://hdl.handle.net/10261/43431
10.1016/j.chemosphere.2008.02.060
44724
Sublethal responses in caged organisms exposed to sediments affected by oil spills
Elsevier
2008
artículo
Morales-Caselles, Carmen
Martín-Díaz, M. Laura
Riba, Inmaculada
Sarasquete, Carmen
rp07648
Del Valls, T. A.
Biomarkers
Histopathology
Invertebrate
Toxicity
Contaminants
2008-04-16
7 páginas, 5 figuras, 2 tablas.
This study was performed to determine sublethal responses of two invertebrate species by using field deployments in areas affected by oil spills, which are acute in the Galician Coast (NNW, Spain) and chronic in the Bay of Algeciras (SSW, Spain). The organisms employed were the crab Carcinus maenas and the clam Ruditapes philippinarum, and during 28 days the animals were exposed to contaminated sediments in cages under field conditions. Different biomarkers of exposure were determined after a 28-day period exposure: ethoxyresorufin O-deethylase (EROD), phase I detoxification enzyme, glutathione-S-transferase (GST) phase II detoxification enzyme but also implicated in oxidative stress events, glutathione peroxidase (GPX) and glutathione reductase (GR), both antioxidant enzymes. In addition, histopathological effects in target tissues of the deployed organisms were evaluated. Biomarker measurements were linked with the concentration of chemicals in the sediments in order to elucidate the type, source and bioavailability of contaminants that produce adverse effects in the bioindicator species. Results obtained in this study have shown how the application of the selected battery of biomarkers under field bioassays allows for the identification of alternative sources of stress that are not observable in laboratory experiments.
Chemosphere
2008
72
819
825