Open AccessDietary uptake of dioxins (PCDD/PCDFs) and dioxin‐like PCBs in Atlantic salmon ( Salmo salar )
Author(s) -
Lundebye A.K.,
Berntssen M.H.G.,
Lie Ø.,
Ritchie G.,
Isosaari P.,
Kiviranta H.,
Vartiainen T.
Publication year - 2004
Publication title -
aquaculture nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.941
H-Index - 79
eISSN - 1365-2095
pISSN - 1353-5773
DOI - 10.1111/j.1365-2095.2004.00299.x
Subject(s) - salmo , polychlorinated dibenzofurans , flesh , fishery , european commission , body weight , polychlorinated dibenzodioxins , fish fillet , zoology , fish <actinopterygii> , environmental chemistry , biology , salmonidae , contamination , chemistry , european union , ecology , endocrinology , business , economic policy
Summary Atlantic salmon ( Salmo salar ) were fed graded levels of dioxins (polychlorinated dibenzo‐ p ‐dioxins and polychlorinated dibenzofurans) and dioxin‐like polychlorinated biphenyls (DLPCBs) in their diets for 7 months. The dioxin and DLPCB concentrations in both fillet and whole body of salmon increased with increasing dietary exposure. DLPCBs transferred more efficiently from the feed to edible flesh of salmon than dioxins, and contributed a higher proportion to the total toxic equivalents (TEQ). At the end of the trial, the maximum concentrations of dioxins in fillet and whole fish were 1.9 and 2.3 pg WHO‐TEQ g −1 fresh weight, respectively. Hence with this feeding period even with the most contaminated feed (4.9 pg WHO‐TEQ g −1 dw) the dioxin concentrations in salmon did not exceed the maximum level set by the European Commission [4 pg WHO‐TEQ g −1 (EC 2375/2001)]. The inclusion of DLPCBs in this study provides valuable information for forthcoming risk assessments and the future establishment of maximum limits for these compounds in feed and fish.