title: Trophic transfer of toxic elements in the estuarine invertebrate and fish food web of Daliao River, Liaodong Bay, China.
abstract: In order to study element accumulation and trophic transfer in the food web, sixteen benthic invertebrate species and nine fish species were collected from the Daliao River estuary for analysis of toxic elements and nitrogen stable isotope in the muscle tissue. The concentrations ranged between 1.44-17.98, 0.01-9.30, 0.17-36.15, 0.7-145.4, 0.01-0.33, 0.14-14.88, 0.10-2.51, 0.02-0.14, and 19.3-221.1mgkg-1for As, Cd, Cu, Hg, Ni, Pb, Sb, and Zn, respectively. As, Cd, Cu, and Zn were significantly higher in the benthic invertebrates than in fish, whereas Hg and Sb were significantly lower. In addition, the benthic invertebrates were characterized by the highest bioaccumulation factor (BAF) for Cd, whereas the fish were characterized by the highest BAF for Hg. A significant decrease in Cd, Cr, Cu, and Ni levels, and a significant increase in Hg and Sb levels were observed with increasing trophic levels.
authors.affiliation: State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing, China.
authors.forename: Bobo
authors.initials: B
authors.lastname: Guo
authors.affiliation: State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing, China.
authors.forename: Deqi
authors.initials: D
authors.lastname: Jiao
authors.affiliation: School of Resource and Environmental Sciences, Wuhan University, Wuhan, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.affiliation: State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing, China.
authors.forename: Kai
authors.initials: K
authors.lastname: Lei
authors.affiliation: State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing, China. Electronic address: c.lin@bnu.edu.cn.
authors.forename: Chunye
authors.initials: C
authors.lastname: Lin
mesh_terms: D000818:Animals; D061006:Bays / Q000737:chemistry*; D002681:China; D004784:Environmental Monitoring / Q000379:methods*; D005399:Fishes / Q000378:metabolism*; D020387:Food Chain; D007448:Invertebrates / Q000187:drug effects / Q000378:metabolism*; D008628:Mercury / Q000032:analysis; D019216:Metals, Heavy / Q000032:analysis* / Q000378:metabolism / Q000633:toxicity; D009132:Muscles / Q000737:chemistry; D009587:Nitrogen Isotopes / Q000032:analysis; D045483:Rivers / Q000737:chemistry*; D017747:Seafood / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism / Q000633:toxicity
chemical_list: D019216:Metals, Heavy; D009587:Nitrogen Isotopes; D014874:Water Pollutants, Chemical; D008628:Mercury
keywords: Benthic invertebrate; Biomagnification; Estuary; Fish; Metal