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The role of dissolved organic carbon concentration and composition on nickel toxicity to early life-stages of the blue mussel Mytilus edulis and purple sea urchin Strongylocentrotus purpuratus.
Ecotoxicol Environ Saf. 2018 Sep 30; 160:162-170.EE

Abstract

Nickel (Ni) emissions resulting from production and transportation raise concerns about the impact of Ni exposure to marine ecosystems. Ni bioavailability models are established for FW systems, but the influence of chemical parameters (e.g. dissolved organic carbon (DOC)) on Ni toxicity within marine systems is less well understood. To examine the effects of DOC concentration and composition on Ni toxicity, acute toxicity tests were conducted on early life-stages of blue mussels (Mytilus edulis) and sea urchin embryos (Strongylocentrotus purpuratus) in full strength sea water (32 ppt). Nine different field collected samples of water with varying concentration (up to 4.5 mg C/L) and composition of DOC were collected from the east coast of the United States. Organic matter compositional analysis included molecular fluorescence and absorbance spectroscopy. The different DOC sources had different protective effects against embryo toxicity. The control (no DOC) Ni 48 h-EC50 for Mytilus embryos was 133 µg/L (95% confidence interval (C.I.) of 123-144 µg/L), while Strongylocentrotus embryos displayed control 96-h EC50 values of 207 µg/L (167-247 µg/L). The most significantly protective sample had high humic acid concentrations (as determined from fluorescence spectroscopy), which yielded an EC50 of 195 µg/L (169-222 µg/L) for Mytilus, and an EC50 of 394 µg/L (369-419 µg/L) for S. purpuratus. Among all samples, protection was related to both DOC quantity and quality, with fluorescence-resolved humic and fulvic acid concentrations showing the strongest correlations with protection for both species. These data suggest that DOC is protective against Ni toxicity in M. edulis and S. purpuratus, and that accounting for a DOC quality factor will improve predictive toxicity models such as the biotic ligand model.

Authors+Show Affiliations

Department of Chemistry and Biochemistry, Wilfrid Laurier University, Waterloo, ON, Canada; Department of Biology, Wilfrid Laurier University, Waterloo, ON, Canada; Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada.Department of Chemistry and Biochemistry, Wilfrid Laurier University, Waterloo, ON, Canada.Department of Zoology, University of British Columbia, Vancouver, BC, Canada.Department of Biology, Wilfrid Laurier University, Waterloo, ON, Canada.Department of Chemistry and Biochemistry, Wilfrid Laurier University, Waterloo, ON, Canada. Electronic address: ssmith@wlu.ca.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29804012

Citation

Blewett, Tamzin A., et al. "The Role of Dissolved Organic Carbon Concentration and Composition On Nickel Toxicity to Early Life-stages of the Blue Mussel Mytilus Edulis and Purple Sea Urchin Strongylocentrotus Purpuratus." Ecotoxicology and Environmental Safety, vol. 160, 2018, pp. 162-170.
Blewett TA, Dow EM, Wood CM, et al. The role of dissolved organic carbon concentration and composition on nickel toxicity to early life-stages of the blue mussel Mytilus edulis and purple sea urchin Strongylocentrotus purpuratus. Ecotoxicol Environ Saf. 2018;160:162-170.
Blewett, T. A., Dow, E. M., Wood, C. M., McGeer, J. C., & Smith, D. S. (2018). The role of dissolved organic carbon concentration and composition on nickel toxicity to early life-stages of the blue mussel Mytilus edulis and purple sea urchin Strongylocentrotus purpuratus. Ecotoxicology and Environmental Safety, 160, 162-170. https://doi.org/10.1016/j.ecoenv.2018.05.029
Blewett TA, et al. The Role of Dissolved Organic Carbon Concentration and Composition On Nickel Toxicity to Early Life-stages of the Blue Mussel Mytilus Edulis and Purple Sea Urchin Strongylocentrotus Purpuratus. Ecotoxicol Environ Saf. 2018 Sep 30;160:162-170. PubMed PMID: 29804012.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The role of dissolved organic carbon concentration and composition on nickel toxicity to early life-stages of the blue mussel Mytilus edulis and purple sea urchin Strongylocentrotus purpuratus. AU - Blewett,Tamzin A, AU - Dow,Elissa M, AU - Wood,Chris M, AU - McGeer,James C, AU - Smith,D Scott, Y1 - 2018/05/26/ PY - 2017/08/22/received PY - 2018/04/09/revised PY - 2018/05/12/accepted PY - 2018/5/29/pubmed PY - 2018/9/25/medline PY - 2018/5/28/entrez KW - Biotic ligand model KW - Dissolved organic carbon KW - Embryos KW - Metals KW - Nickel KW - Toxicity SP - 162 EP - 170 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 160 N2 - Nickel (Ni) emissions resulting from production and transportation raise concerns about the impact of Ni exposure to marine ecosystems. Ni bioavailability models are established for FW systems, but the influence of chemical parameters (e.g. dissolved organic carbon (DOC)) on Ni toxicity within marine systems is less well understood. To examine the effects of DOC concentration and composition on Ni toxicity, acute toxicity tests were conducted on early life-stages of blue mussels (Mytilus edulis) and sea urchin embryos (Strongylocentrotus purpuratus) in full strength sea water (32 ppt). Nine different field collected samples of water with varying concentration (up to 4.5 mg C/L) and composition of DOC were collected from the east coast of the United States. Organic matter compositional analysis included molecular fluorescence and absorbance spectroscopy. The different DOC sources had different protective effects against embryo toxicity. The control (no DOC) Ni 48 h-EC50 for Mytilus embryos was 133 µg/L (95% confidence interval (C.I.) of 123-144 µg/L), while Strongylocentrotus embryos displayed control 96-h EC50 values of 207 µg/L (167-247 µg/L). The most significantly protective sample had high humic acid concentrations (as determined from fluorescence spectroscopy), which yielded an EC50 of 195 µg/L (169-222 µg/L) for Mytilus, and an EC50 of 394 µg/L (369-419 µg/L) for S. purpuratus. Among all samples, protection was related to both DOC quantity and quality, with fluorescence-resolved humic and fulvic acid concentrations showing the strongest correlations with protection for both species. These data suggest that DOC is protective against Ni toxicity in M. edulis and S. purpuratus, and that accounting for a DOC quality factor will improve predictive toxicity models such as the biotic ligand model. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/29804012/The_role_of_dissolved_organic_carbon_concentration_and_composition_on_nickel_toxicity_to_early_life_stages_of_the_blue_mussel_Mytilus_edulis_and_purple_sea_urchin_Strongylocentrotus_purpuratus_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0147-6513(18)30407-X DB - PRIME DP - Unbound Medicine ER -