Selection of biochemical and physiological parameters in the croaker Micropogonias furnieri as biomarkers of chemical contamination in estuaries using a generalized additive model (GAM)
| Autor: | Adalto Bianchini, Gustavo Souza, Indianara Fernanda Barcarolli, Patrícia Gomes Costa, Daiane da Silva Marques, Janaina Goulart Cardozo |
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| Rok vydání: | 2018 |
| Předmět: |
Pollution
Gill Environmental Engineering 010504 meteorology & atmospheric sciences media_common.quotation_subject Alkalinity 010501 environmental sciences 01 natural sciences chemistry.chemical_compound Cytochrome P-450 CYP1A1 Environmental Chemistry Animals Sulfate Waste Management and Disposal 0105 earth and related environmental sciences media_common Glutathione Transferase geography geography.geographical_feature_category Chemistry Estuary Contamination Pesticide Catalase Perciformes Salinity Liver Environmental chemistry Estuaries Biomarkers Brazil Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | The Science of the total environment. 647 |
| ISSN: | 1879-1026 |
| Popis: | Biochemical and physiological parameters in the croaker Micropogonias furnieri were evaluated as biomarkers of chemical contaminants in estuaries. Juvenile croakers (10–20 cm total body length) were collected in summer and winter (2011 and 2012), in two sites at the Lagoa dos Patos estuary (southern Brazil). Fish were also collected in summer (2011 and 2012) in one site at the Barra do Chui estuary (southern Brazil). Tissue (gills, muscle or liver) samples were dissected and analyzed for contaminants [metals, polycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticides (OCPs)] and selected biochemical and physiological parameters [metallothionein-like proteins (MTLP), acetylcholinesterase (AChE) activity, ethoxyresorufin-O-deethylase (EROD) activity, and lipid peroxidation (LPO)]. Additionally, water samples were collected for water chemical analyses (salinity, pH, temperature, dissolved oxygen, total alkalinity, and sulfate concentration). Data obtained were integrated and analyzed, using Principal Component Analysis (PCA) and Generalized Additive Model (GAM) approaches. Results showed that changes in concentrations of chemical contaminants and responses of biochemical and physiological parameters did not show any pattern according to the site, season and year of fish collection. However, they were influenced by fish body length and water temperature and salinity. Liver LPO and EROD activity were not responsive to PAHs. However, liver LPO was responsive to HCB, p,p-DDD, p,p-DDT and endosulfan sulfate. In turn, gill MTLP concentration, muscle AChE activity and liver EROD activity were responsive to non-essential metals (Pb, Cd and Ag). Considering that the ecotoxicological modeling approach adopted (GAM) accounted for biological, spatial and temporal variability of data associated with fish body size and site, season and year of fish collection, gill MTLP concentration, muscle AChE activity, as well as liver LPO and EROD activity can be considered as reliable biomarkers of fish exposure to chemical contaminants in estuaries. |
| Databáze: | OpenAIRE |
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