Assessment of contaminants and biomarkers of exposure in wild and farmed seabass.
This study aimed to investigate the relationships between levels of organochlorine compounds (PCBs and DDTs), polycyclic aromatic hydrocarbons (PAHs), metals and biomarkers of exposure (EROD and GST) and oxidative stress biomarkers, in wild and cultured European seabass (Dicentrarchus labrax). Additionally, the fatty acid profile was determined in muscle to assess differences between cultivated and wild specimens of marketable size. Although results pointed to relatively low concentration of contaminants, wild specimens presented enhanced accumulation of metals and cultivated specimens higher levels of organic compounds. Biomarkers were correlated with contaminants in tissues, showing that higher levels can cause effects at the biochemical level. Wild specimens have presented higher content on omega-3 fatty acids in muscle. Besides the useful application of biomarkers in wild species, this study has shown that they can also be applied to monitor biological effects in the fish farming process.
Ferreira
Marta
M
CIMAR/CIIMAR-Centro Interdisciplinar de Investigação Marinha e Ambiental-Laboratório Toxicologia Ambiental, Universidade do Porto, Rua dos Bragas, 289, 4050-123 Porto, Portugal. mferreira@ciimar.up.pt
Caetano
Miguel
M
Antunes
Paulo
P
Costa
Joana
J
Gil
Odete
O
Bandarra
Narcisa
N
Pousão-Ferreira
Pedro
P
Vale
Carlos
C
Reis-Henriques
Maria Armanda
MA
D000818:Animals; D017756:Aquaculture; D001492:Bass / Q000378:metabolism*; D015415:Biomarkers / Q000032:analysis; D019363:Cytochrome P-450 CYP1A1 / Q000032:analysis / Q000378:metabolism*; D003634:DDT / Q000032:analysis / Q000633:toxicity*; D004781:Environmental Exposure; D004784:Environmental Monitoring; D005227:Fatty Acids / Q000032:analysis; D015525:Fatty Acids, Omega-3 / Q000032:analysis / Q000378:metabolism; D005982:Glutathione Transferase / Q000032:analysis / Q000378:metabolism*; D018482:Muscle, Skeletal / Q000737:chemistry / Q000378:metabolism; D018384:Oxidative Stress; D011078:Polychlorinated Biphenyls / Q000032:analysis / Q000633:toxicity*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis / Q000633:toxicity*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000633:toxicity*
D015415:Biomarkers; D005227:Fatty Acids; D015525:Fatty Acids, Omega-3; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; D003634:DDT; D011078:Polychlorinated Biphenyls; D019363:Cytochrome P-450 CYP1A1; D005982:Glutathione Transferase