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Protein and lipid growth rates regulate bioaccumulation of PCBs and Hg in Bighead Carp (Hypophthalmichthys nobilis) and Silver Carp (Hypophthalmichthys molitrix) from the Three Gorges Reservoir, China.
Environ Pollut. 2018 Dec; 243(Pt A):152-162.EP

Abstract

This study evaluated the effect of growth of different tissue compartments on the bioaccumulation of mercury (Hg) and polychlorinated biphenyls (PCBs) in Silver Carp (Hypophthalmichthys molitrix) and Bighead Carp (Hypophthalmichthys nobilis) from the Three Gorges Reservoir (TGR), China. A non-steady state bioenergetics/toxicokinetic model was developed to simulate PCB and Hg concentrations in these two species and compared with field data. Simulations using constant whole body growth rate and constant tissue to whole body weight ratios were contrasted against simulations adopting age specific whole body and tissue/age specific growth rates for their goodness of fit to field data. The simulations using age/tissue specific growth rates demonstrated better fit to field data for PCBs compared to the constant growth rate models (22% improved R2), while both models explained similar variation in Hg concentration data. Both species demonstrated higher growth rates of lipids (on a daily basis) relative to whole body and protein contributing to higher growth dilution of PCBs compared to Hg. Although stable isotope data indicated some degree of diet and/or habitat shift, simulations assuming a constant diet concentration explained between 36 and 40% of the variation in fish concentrations for both contaminants and fish species. This study demonstrates that differences in the bioaccumulation rate of PCBs and Hg by Asian carp can be partially explained by differences in the growth rates of key tissue storage compartments associated with each contaminant. These differences in chemical-specific growth dilution subsequently contribute to differences in chemical retention and bioaccumulation patterns of Hg and PCBs by fish.

Authors+Show Affiliations

Great Lakes Institute for Environmental Research, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada; College of Resources and Environment, Southwest University, No.1 Tiansheng Road, Beibei, Chongqing, 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region (WEMST), No.1 Tiansheng Road, Beibei, Chongqing, 400715, China. Electronic address: li111137@uwindsor.ca.Great Lakes Institute for Environmental Research, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region (WEMST), No.1 Tiansheng Road, Beibei, Chongqing, 400715, China.College of Resources and Environment, Southwest University, No.1 Tiansheng Road, Beibei, Chongqing, 400715, China.Great Lakes Institute for Environmental Research, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada; College of Resources and Environment, Southwest University, No.1 Tiansheng Road, Beibei, Chongqing, 400715, China; National Base of International S&T Collaboration on Water Environmental Monitoring and Simulation in TGR Region (WEMST), No.1 Tiansheng Road, Beibei, Chongqing, 400715, China.College of Animal Science and Technology, Southwest University, No.1 Tiansheng Road, Beibei, Chongqing, 400715, China.College of Animal Science and Technology, Southwest University, No.1 Tiansheng Road, Beibei, Chongqing, 400715, China.Great Lakes Institute for Environmental Research, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30172121

Citation

Li, Jiajia, et al. "Protein and Lipid Growth Rates Regulate Bioaccumulation of PCBs and Hg in Bighead Carp (Hypophthalmichthys Nobilis) and Silver Carp (Hypophthalmichthys Molitrix) From the Three Gorges Reservoir, China." Environmental Pollution (Barking, Essex : 1987), vol. 243, no. Pt A, 2018, pp. 152-162.
Li J, Haffner GD, Wang D, et al. Protein and lipid growth rates regulate bioaccumulation of PCBs and Hg in Bighead Carp (Hypophthalmichthys nobilis) and Silver Carp (Hypophthalmichthys molitrix) from the Three Gorges Reservoir, China. Environ Pollut. 2018;243(Pt A):152-162.
Li, J., Haffner, G. D., Wang, D., Zhang, L., Li, Y., Deng, H., & Drouillard, K. G. (2018). Protein and lipid growth rates regulate bioaccumulation of PCBs and Hg in Bighead Carp (Hypophthalmichthys nobilis) and Silver Carp (Hypophthalmichthys molitrix) from the Three Gorges Reservoir, China. Environmental Pollution (Barking, Essex : 1987), 243(Pt A), 152-162. https://doi.org/10.1016/j.envpol.2018.08.067
Li J, et al. Protein and Lipid Growth Rates Regulate Bioaccumulation of PCBs and Hg in Bighead Carp (Hypophthalmichthys Nobilis) and Silver Carp (Hypophthalmichthys Molitrix) From the Three Gorges Reservoir, China. Environ Pollut. 2018;243(Pt A):152-162. PubMed PMID: 30172121.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Protein and lipid growth rates regulate bioaccumulation of PCBs and Hg in Bighead Carp (Hypophthalmichthys nobilis) and Silver Carp (Hypophthalmichthys molitrix) from the Three Gorges Reservoir, China. AU - Li,Jiajia, AU - Haffner,G Douglas, AU - Wang,Dingyong, AU - Zhang,Lei, AU - Li,Yun, AU - Deng,Huatang, AU - Drouillard,Kenneth G, Y1 - 2018/08/24/ PY - 2018/02/22/received PY - 2018/08/18/revised PY - 2018/08/21/accepted PY - 2018/9/2/pubmed PY - 2018/12/12/medline PY - 2018/9/2/entrez KW - Asian carp KW - Bioenergetics KW - Mercury KW - Persistent organic pollutants KW - Toxicokinetics SP - 152 EP - 162 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ. Pollut. VL - 243 IS - Pt A N2 - This study evaluated the effect of growth of different tissue compartments on the bioaccumulation of mercury (Hg) and polychlorinated biphenyls (PCBs) in Silver Carp (Hypophthalmichthys molitrix) and Bighead Carp (Hypophthalmichthys nobilis) from the Three Gorges Reservoir (TGR), China. A non-steady state bioenergetics/toxicokinetic model was developed to simulate PCB and Hg concentrations in these two species and compared with field data. Simulations using constant whole body growth rate and constant tissue to whole body weight ratios were contrasted against simulations adopting age specific whole body and tissue/age specific growth rates for their goodness of fit to field data. The simulations using age/tissue specific growth rates demonstrated better fit to field data for PCBs compared to the constant growth rate models (22% improved R2), while both models explained similar variation in Hg concentration data. Both species demonstrated higher growth rates of lipids (on a daily basis) relative to whole body and protein contributing to higher growth dilution of PCBs compared to Hg. Although stable isotope data indicated some degree of diet and/or habitat shift, simulations assuming a constant diet concentration explained between 36 and 40% of the variation in fish concentrations for both contaminants and fish species. This study demonstrates that differences in the bioaccumulation rate of PCBs and Hg by Asian carp can be partially explained by differences in the growth rates of key tissue storage compartments associated with each contaminant. These differences in chemical-specific growth dilution subsequently contribute to differences in chemical retention and bioaccumulation patterns of Hg and PCBs by fish. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/30172121/Protein_and_lipid_growth_rates_regulate_bioaccumulation_of_PCBs_and_Hg_in_Bighead_Carp__Hypophthalmichthys_nobilis__and_Silver_Carp__Hypophthalmichthys_molitrix__from_the_Three_Gorges_Reservoir_China_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0269-7491(18)30404-4 DB - PRIME DP - Unbound Medicine ER -