| Title | Decabromodiphenyl ether (BDE-209) enters the food web of the River Po and is metabolically debrominated in resident cyprinid fishes |
| Abstract | Decabromodiphenyl ether (BDE-209), the primary constituent of a widely used flame retardant formulation,
is present at relatively high levels in sediments and macroinvertebrates of the River Po. Since it was
demonstrated that BDE-209 can be biotransformed to smaller and more toxic polybrominated dipheyl ethers
(PBDEs), the main objective of this study was to assess whether the large quantities of BDE-209 present in the
River Po are bioavailable to the higher levels of the food web and are biotransformed in feral fishes. To this
aim, 23 cyprinids, mainly common carp, were analysed for the hepatic contents of PBDEs. Contrary to
sediments and invertebrates of the same area, no fish sample contained detectable levels of BDE-209. All
fishes contained typical PBDE representatives, e.g. BDE-47, BDE-99, BDE-100, BDE-153 and BDE-154, but more
importantly they contained three congeners, i.e. BDE-179, BDE-188 and BDE-202, which are not present in
any technical formulations and are known products of BDE-209 debromination in fish. The age of carps had no
effects on the bioaccumulation of PBDEs. Conversely, the contents of PCBs, which also were determined in the
same fish samples, showed a positive correlation with age. Both groups of chemicals displayed a tendency to a
higher contamination in male fish. This study shows that BDE-209 enters the food web of the River Po
contributing to the load of lower brominated PBDEs and thus to the load of chemical stressors threatening the
aquatic life of the major Italian watercourse. |
| Source | Science of the total environment 409, pp. 4966–4972 |
| Keywords | Bioaccumulation; freshwater fishes; endocrine disrupters; BDE-179; BDE-188; PBDEs and PCBs |
| Journal | Science of the total environment |
| Editor | Elsevier, Lausanne ;, Paesi Bassi |
| Year | 2011 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.scitotenv.2011.07.062 |
| Authors | Viganò L., Roscioli C., Guzzella L. |
| Text | 42450 2011 10.1016/j.scitotenv.2011.07.062 Bioaccumulation; freshwater fishes; endocrine disrupters; BDE 179; BDE 188; PBDEs and PCBs Decabromodiphenyl ether BDE 209 enters the food web of the River Po and is metabolically debrominated in resident cyprinid fishes Vigano L., Roscioli C., Guzzella L. IRSA Sede secondaria di Brugherio Decabromodiphenyl ether BDE 209 , the primary constituent of a widely used flame retardant formulation, is present at relatively high levels in sediments and macroinvertebrates of the River Po. Since it was demonstrated that BDE 209 can be biotransformed to smaller and more toxic polybrominated dipheyl ethers PBDEs , the main objective of this study was to assess whether the large quantities of BDE 209 present in the River Po are bioavailable to the higher levels of the food web and are biotransformed in feral fishes. To this aim, 23 cyprinids, mainly common carp, were analysed for the hepatic contents of PBDEs. Contrary to sediments and invertebrates of the same area, no fish sample contained detectable levels of BDE 209. All fishes contained typical PBDE representatives, e.g. BDE 47, BDE 99, BDE 100, BDE 153 and BDE 154, but more importantly they contained three congeners, i.e. BDE 179, BDE 188 and BDE 202, which are not present in any technical formulations and are known products of BDE 209 debromination in fish. The age of carps had no effects on the bioaccumulation of PBDEs. Conversely, the contents of PCBs, which also were determined in the same fish samples, showed a positive correlation with age. Both groups of chemicals displayed a tendency to a higher contamination in male fish. This study shows that BDE 209 enters the food web of the River Po contributing to the load of lower brominated PBDEs and thus to the load of chemical stressors threatening the aquatic life of the major Italian watercourse. 409 Published version Decabromodiphenyl ether BDE 209 enters the food web of the River Po and is metabolically debrominated in resident cyprinid fishes Author s personal copy of the article. BDE209_metabolized_by_cyprinids_of_the_River_Po.pdf Articolo in rivista Elsevier 0048 9697 Science of the total environment Science of the total environment Sci. total environ. liciamaria.guzzella GUZZELLA LICIA MARIA claudiogiovanni.roscioli ROSCIOLI CLAUDIO GIOVANNI luigi.vigano VIGANO LUIGI TA.P04.021.007 Diffusione, ripartizione, bioaccumulo e trasformazione di inquinanti in ecosistemi acquatici |
