We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
ACCUMULATION AND DISTRIBUTION OF POLYCHLORINATED DIBENZO-p-DIOXIN, DIBENZOFURAN, AND POLYCHLORINATED BIPHENYL CONGENERS IN ATLANTIC SALMON (SALMO SALAR).
- Authors
Isosaari, Pirjo; Kiviranta, Hannu; Lie, Øyvind; Lundebye, Anne-Katherine; Ritchie, Gordon; Vartiainen, Terttu
- Abstract
Adult Atlantic salmon (Salmo salar) were fed on four diets containing polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and polychlorinated biphenyls (PCBs) for 30 weeks. Lipid-normalized concentrations showed that all congeners were equally partitioned between whole-fish and fillet samples. Skinned fillet accumulated approximately 30% of the total PCDD/F and PCB content in fish. Accumulation efficiencies in whole fish were 43% for 2,3,7,8-chlorinated dibenzo-p-dioxins and dibenzofurans, 83% for dioxin-like PCBs, and 78% for other PCB congeners. Among PCDD/Fs, tetra- and pentachlorinated congeners were preferentially accumulated in salmon, whereas hepta- and octachlorinated dibenzo-p-dioxins were excreted in the feces. Substitution patterns that were associated with a preferential accumulation of PCBs in salmon included nonortho substitution and tetrachlorination. Accumulation efficiencies and lipid-normalized biomagnification factors (BMFs) were not influenced by the PCDD/F and PCB concentrations of the diets. Biomagnification (BMF > 1) of tetra- and pentachlorinated dibenzop- dioxins and dibenzofurans and of all the PCBs was observed. Differences in the behavior of PCDD/F and PCB congeners resulted in a selective enrichment of the most toxic congeners in salmon.
- Subjects
ATLANTIC salmon; SALMO; FISHES; FOOD; POLYCHLORINATED dibenzodioxins; POLYCHLORINATED dibenzofurans; POLYCHLORINATED biphenyls
- Publication
Environmental Toxicology & Chemistry, 2004, Vol 23, Issue 7, p1672
- ISSN
0730-7268
- Publication type
Article
- DOI
10.1897/03-367