| Title | THE ACCUMULATION LEVELS OF PAHS, PCBS AND DDTS ARE RELATED IN AN INVERSE WAY TO THE SIZE OF A BENTHIC AMPHIPOD (ECHINOGAMMARUS STAMMERI KARAMAN) IN THE RIVER PO |
| Abstract | The accumulation of polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs) and DDTs were investigated
in gammarids captured at three sites along the middle River Po; the first was located upstream and the other two were at increasing
distances downstream of the confluence of a polluted tributary, the River Lambro. Using a GC-MS technique, the levels of PCBs,
PAHs and DDTs were determined separately in large and small gammarids as well as in the fine fraction of sediment samples
collected along the sites of capture. Results confirm the River Lambro as a source of these chemicals to the River Po, and show that
bioaccumulation differences exist between small and large individuals, the former being more contaminated particularly by PCBs
and DDTs. This is likely the result of several interacting factors such as contaminant bioavailability, gammarid-size effects on
kinetic parameters and feeding selectivity. The bioaccumulation patterns of PCBs and DDTs, and their higher biota-sediment
accumulation factors (BSAF), are consistent with chemical properties and suggest a dietary disequilibrium found only 10 km
downstream from the tributary, and in smaller amphipods. Present results show that gammarids may represent an additional source
of contaminants, particularly of chlorinated compounds, to the many organisms feeding on them, with a higher risk for those which
prey selectively on smaller gammarids. |
| Source | Science of the total environment 37(1), pp. 131–145 |
| Journal | Science of the total environment |
| Editor | Elsevier, Lausanne ;, Paesi Bassi |
| Year | 2007 |
| Type | Articolo in rivista |
| Authors | VIGANÒ L., FARKAS A., GUZZELLA L., ROSCIOLI C., ERRATICO C. |
| Text | 42152 2007 THE ACCUMULATION LEVELS OF PAHS, PCBS AND DDTS ARE RELATED IN AN INVERSE WAY TO THE SIZE OF A BENTHIC AMPHIPOD ECHINOGAMMARUS STAMMERI KARAMAN IN THE RIVER PO VIGANÒ L., FARKAS A., GUZZELLA L., ROSCIOLI C., ERRATICO C. Water Research Institute CNR, Via della Mornera 25, 20047 Brugherio Milan , Italy Balaton Limnological Research Institute, Klebelsberg Kuno 3, H 8237 Tihany, Hungary Water Research Institute CNR, Via della Mornera 25, 20047 Brugherio Milan , Italy The accumulation of polychlorinated biphenyls PCBs , polycyclic aromatic hydrocarbons PAHs and DDTs were investigated in gammarids captured at three sites along the middle River Po; the first was located upstream and the other two were at increasing distances downstream of the confluence of a polluted tributary, the River Lambro. Using a GC MS technique, the levels of PCBs, PAHs and DDTs were determined separately in large and small gammarids as well as in the fine fraction of sediment samples collected along the sites of capture. Results confirm the River Lambro as a source of these chemicals to the River Po, and show that bioaccumulation differences exist between small and large individuals, the former being more contaminated particularly by PCBs and DDTs. This is likely the result of several interacting factors such as contaminant bioavailability, gammarid size effects on kinetic parameters and feeding selectivity. The bioaccumulation patterns of PCBs and DDTs, and their higher biota sediment accumulation factors BSAF , are consistent with chemical properties and suggest a dietary disequilibrium found only 10 km downstream from the tributary, and in smaller amphipods. Present results show that gammarids may represent an additional source of contaminants, particularly of chlorinated compounds, to the many organisms feeding on them, with a higher risk for those which prey selectively on smaller gammarids. 37 1 THE ACCUMULATION LEVELS OF PAHS, PCBS AND DDTS ARE RELATED IN AN INVERSE WAY TO THE SIZE OF A BENTHIC AMPHIPOD ECHINOGAMMARUS STAMMERI KARAMAN IN THE RIVER PO Echinogammarus_PCB_PAH_DDT.pdf Articolo in rivista Elsevier 0048 9697 Science of the total environment Science of the total environment Sci. total environ. ERRATICO CLAUDIO ALBERTO liciamaria.guzzella GUZZELLA LICIA MARIA luigi.vigano VIGANO LUIGI TA.P04.021.005 Tendenze evolutive della qualita dei corpi idrici superficiali e sotterranei correlazione causa effetto e caratterizzazione. |
