title: Allometric relationships to liver tissue concentrations of cyclic volatile methyl siloxanes in Atlantic cod.
abstract: Spatial distribution and relationship of allometric measurements (length, weight and age) to liver concentrations of cyclic volatile methyl siloxanes (cVMS) including octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5) and dodecamethylcyclosiloxane (D6) in Atlantic cod (Gadus morhua) collected near the community of Tromsø in Northern Norway were assessed. These congeners were benchmarked against known persistent polychlorinated biphenyls (PCBs 153 and 180) to assess accumulation behavior of cVMS. D5 was the dominate cVMS detected in all fish livers with lipid normalized concentrations up to 10 times or greater than those observed for PCB 153 and 180. D4 and D6 concentration were negatively correlated with fish length and weight, indicating a greater elimination capacity compared to uptake processes with increasing fish size for these chemicals. These results indicate relationships between allometric measurements and cVMS concentrations may account for concentration variations observed within fish and should be assessed in future studies evaluating cVMS bioaccumulation potential.
authors.affiliation: NILU-Norwegian Institute for Air Research, FRAM Centre, Hjalmar Johansens Gate 14, NO-9296 Tromsø, Norway. Electronic address: nicholas.warner@nilu.no.
authors.forename: Nicholas A
authors.initials: NA
authors.lastname: Warner
authors.affiliation: NILU-Norwegian Institute for Air Research, FRAM Centre, Hjalmar Johansens Gate 14, NO-9296 Tromsø, Norway; Department of Community Medicine, University of Tromsø, NO-9037, Tromsø, Norway.
authors.forename: Therese H
authors.initials: TH
authors.lastname: Nøst
authors.affiliation: Akvaplan-niva, FRAM Centre, Hjalmar Johansens Gate 14, NO-9296 Tromsø, Norway.
authors.forename: Hector
authors.initials: H
authors.lastname: Andrade
authors.affiliation: Akvaplan-niva, FRAM Centre, Hjalmar Johansens Gate 14, NO-9296 Tromsø, Norway.
authors.forename: Guttorm
authors.initials: G
authors.lastname: Christensen
mesh_terms: D000818:Animals; D004784:Environmental Monitoring / Q000379:methods*; D005399:Fishes; D048389:Gadus morhua / Q000378:metabolism*; D008099:Liver / Q000378:metabolism*; D009664:Norway; D011078:Polychlorinated Biphenyls / Q000378:metabolism; D012833:Siloxanes / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D012833:Siloxanes; D014874:Water Pollutants, Chemical; C114768:decamethylcyclopentasiloxane; C024064:octamethylcyclotetrasiloxane; D011078:Polychlorinated Biphenyls; C014024:2,4,5,2',4',5'-hexachlorobiphenyl
keywords: Accumulation; Cyclic volatile methyl siloxanes; Fish; Length; Weight