title: Combining bioaccumulation and coping mechanism to enhance long-term site-specific risk assessment for zinc susceptibility of bivalves.
abstract: The purpose of this study is to conduct a long-term site-specific risk assessment for zinc (Zn) susceptibility of bivalves, green mussel Perna viridis and hard clam Ruditapes philippinarum, based on published experimental data by linking the biologically-based damage assessment model with the subcellular partitioning concept. A comprehensive risk modeling framework was developed to predict susceptibility probability of two bivalve species exposed to waterborne Zn. The results indicated that P. viridis accumulates more Zn toxicity, whereas both toxic potency and the recovery rate of Zn are higher for R. philippinarum. We found that negative linear correlations exist in elimination-recovery and elimination-detoxification relationships, whereas a positive linear correlation was observed in recovery-detoxification relationships for bivalves exposed to waterborne Zn. Simulation results showed that the spatial differences of susceptibility primarily resulted from the variation of waterborne Zn concentration under field conditions. We found that R. philippinarum is more susceptible of Zn than P. viridis under the same exposure condition. Results also suggested that Zn posed no significant susceptibility risk to two bivalve species in Taiwan. We suggested that these two species can be used to biomonitor the water quality on Taiwan coastal areas.
authors.affiliation: Department of Post-Modern Agriculture, MingDao University, Changhua, Taiwan, ROC.
authors.forename: Bo-Ching
authors.initials: BC
authors.lastname: Chen
authors.forename: Wei-Yu
authors.initials: WY
authors.lastname: Chen
authors.forename: Yun-Ru
authors.initials: YR
authors.lastname: Ju
authors.forename: Jeng-Wei
authors.initials: JW
authors.lastname: Tsai
authors.forename: Li-John
authors.initials: LJ
authors.lastname: Jou
authors.forename: Sher
authors.initials: S
authors.lastname: Singh
authors.forename: Chung-Min
authors.initials: CM
authors.lastname: Liao
mesh_terms: D000818:Animals; D049872:Bivalvia / Q000187:drug effects* / Q000378:metabolism; D004784:Environmental Monitoring; D049883:Perna / Q000187:drug effects / Q000378:metabolism; D018570:Risk Assessment; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism / Q000633:toxicity; D015032:Zinc / Q000032:analysis* / Q000378:metabolism / Q000633:toxicity
chemical_list: D014874:Water Pollutants, Chemical; D015032:Zinc