Effects of subchronic exposure of early life stages of white sturgeon (Acipenser transmontanus) to copper, cadmium, and zinc.
Identifieur interne : 000336 ( PubMed/Curation ); précédent : 000335; suivant : 000337Effects of subchronic exposure of early life stages of white sturgeon (Acipenser transmontanus) to copper, cadmium, and zinc.
Auteurs : David W. Vardy [Canada] ; Amber R. Tompsett ; Jacinda L. Sigurdson ; Jon A. Doering ; Xiaowei Zhang ; John P. Giesy ; Markus HeckerSource :
- Environmental toxicology and chemistry [ 1552-8618 ] ; 2011.
Descripteurs français
- Wicri :
- geographic : Canada, États-Unis.
English descriptors
- KwdEn :
- MESH :
- chemical , toxicity : Cadmium, Copper, Water Pollutants, Chemical, Zinc.
- geographic : Canada, United States.
- chemistry : Rivers.
- growth & development : Fishes.
- Animals, Toxicity Tests, Subchronic, Water Quality.
Abstract
Populations of sturgeon (Acipenseridae) are declining in many places in the world because of several potential factors, including overharvesting, habitat alteration, and pollution. In North America, populations of the white sturgeon (Acipenser transmontanus) have been experiencing poor annual recruitment in major river systems for more than three decades. Metal pollution has been hypothesized as a potential contributing factor to the poor recruitment in some of the water bodies. In general, little is known about the toxicity of metals such as Cu, Cd, and Zn to white sturgeon and their potential influence on survival of embryos and juveniles. The present study was conducted to establish baseline toxicity data for the subchronic exposure of early life stages of white sturgeon to Cu, Cd, and Zn that can be used in metal-related risk assessments. Embryos, larvae, and fry were exposed to increasing concentrations of dissolved Cu, Cd, or Zn for 66 d using laboratory-based flow-through exposure systems. Hatching success was greater than 79% for all controls, and no significant differences were observed among treatment groups or between treatments and controls. Chronic lethal concentrations at which 20% mortality occurred (LC20s) for Cd (1.5 µg/L), Cu (5.5 µg/L), and Zn (112 µg/L) obtained for white sturgeon in the present study were comparable to those of sensitive salmonid species. Based on LC20 values for 19 or 58 d posthatch white sturgeon, the United States national ambient water quality criteria and the Canadian water quality guidelines for the protection of aquatic life that have been established for Cd, Cu, and Zn protect white sturgeon early life stages.
DOI: 10.1002/etc.638
PubMed: 21805501
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Sigurdson</name></author><author><name sortKey="Doering, Jon A" sort="Doering, Jon A" uniqKey="Doering J" first="Jon A" last="Doering">Jon A. Doering</name></author><author><name sortKey="Zhang, Xiaowei" sort="Zhang, Xiaowei" uniqKey="Zhang X" first="Xiaowei" last="Zhang">Xiaowei Zhang</name></author><author><name sortKey="Giesy, John P" sort="Giesy, John P" uniqKey="Giesy J" first="John P" last="Giesy">John P. 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In North America, populations of the white sturgeon (Acipenser transmontanus) have been experiencing poor annual recruitment in major river systems for more than three decades. Metal pollution has been hypothesized as a potential contributing factor to the poor recruitment in some of the water bodies. In general, little is known about the toxicity of metals such as Cu, Cd, and Zn to white sturgeon and their potential influence on survival of embryos and juveniles. The present study was conducted to establish baseline toxicity data for the subchronic exposure of early life stages of white sturgeon to Cu, Cd, and Zn that can be used in metal-related risk assessments. Embryos, larvae, and fry were exposed to increasing concentrations of dissolved Cu, Cd, or Zn for 66 d using laboratory-based flow-through exposure systems. Hatching success was greater than 79% for all controls, and no significant differences were observed among treatment groups or between treatments and controls. Chronic lethal concentrations at which 20% mortality occurred (LC20s) for Cd (1.5 µg/L), Cu (5.5 µg/L), and Zn (112 µg/L) obtained for white sturgeon in the present study were comparable to those of sensitive salmonid species. Based on LC20 values for 19 or 58 d posthatch white sturgeon, the United States national ambient water quality criteria and the Canadian water quality guidelines for the protection of aquatic life that have been established for Cd, Cu, and Zn protect white sturgeon early life stages.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">21805501</PMID><DateCreated><Year>2011</Year><Month>10</Month><Day>17</Day></DateCreated><DateCompleted><Year>2012</Year><Month>01</Month><Day>09</Day></DateCompleted><DateRevised><Year>2016</Year><Month>10</Month><Day>18</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1552-8618</ISSN><JournalIssue CitedMedium="Internet"><Volume>30</Volume><Issue>11</Issue><PubDate><Year>2011</Year><Month>Nov</Month></PubDate></JournalIssue><Title>Environmental toxicology and chemistry</Title><ISOAbbreviation>Environ. Toxicol. 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The present study was conducted to establish baseline toxicity data for the subchronic exposure of early life stages of white sturgeon to Cu, Cd, and Zn that can be used in metal-related risk assessments. Embryos, larvae, and fry were exposed to increasing concentrations of dissolved Cu, Cd, or Zn for 66 d using laboratory-based flow-through exposure systems. Hatching success was greater than 79% for all controls, and no significant differences were observed among treatment groups or between treatments and controls. Chronic lethal concentrations at which 20% mortality occurred (LC20s) for Cd (1.5 µg/L), Cu (5.5 µg/L), and Zn (112 µg/L) obtained for white sturgeon in the present study were comparable to those of sensitive salmonid species. 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