View in EDS

Toxicity of oil sands process-affected water to early life stage rainbow trout (Oncorhynchus mykiss).

Saved in:
Bibliographic Details
Title: Toxicity of oil sands process-affected water to early life stage rainbow trout (Oncorhynchus mykiss).
Authors: Vega, Valeria1 (AUTHOR), Piggott, Nina2 (AUTHOR), Cancelli, Alexander M1 (AUTHOR), Kelly, Barry C1,3 (AUTHOR), Marlatt, Vicki4 (AUTHOR), Gobas, Frank A P C5 (AUTHOR) gobas@sfu.ca
Source: Environmental Toxicology & Chemistry. May2026, Vol. 45 Issue 5, p1144-1157. 14p.
Subject Terms: *Chronic toxicity testing, *Water pollution, *Ecological impact, *Poisons, Rainbow trout, Mortality, Naphthenic acids, Pathological anatomy
Abstract: To provide insights into the potential impacts of release of oil sands process-affected water (OSPW) into the environment, chronic toxicity tests on early life stage rainbow trout (ELS-RBT) were conducted. The objective of the testing was to better characterize the effects of OSPW from the Alberta Oil sands on swim-up fry mortality, development (fish length and width, yolk sac development), and deformities (skeletal, craniofacial, finfold, and edemas) as a function of OSPW dilution (%) and ∑O2-naphthenic acid (NA) concentrations. More than 95% mortality in ELS-RBT was observed in the range of 22% to 100% OSPW. Lethal concentrations of 50% of the test population (LC50) values expressed in terms of OSPW dilutions were 13.7 (SE 0.7), 10.6 (SE 0.5), and 12.7 (SE 0.5) % for OSPW collected in 2019, 2021, and 2022, respectively. Corresponding LC50 values for ∑O2-NAs concentrations were 2.8 (SE 0.14), 2.0 (SE 0.11), and 2.2 (SE 0.09) mg/L, respectively. Primary sublethal effects included delayed development, craniofacial defects, and evidence of cardiovascular toxicity, including pericardial and yolk sac edema and hemorrhaging. Evidence of sublethal developmental effects was observed at OSPW dilutions above 10% and corresponding ∑O2-NA concentrations above 1.69 mg/L. The only exception was for 17.1 (SE 3.3) % craniofacial deformities at OSPW concentrations of 3.2% and corresponding ∑O2-NA concentrations of 0.66 mg/L, but only for OSPW collected in 2019. The results from this indicate that a 20-fold or greater dilution (or a corresponding removal of OSPW) of the tested OSPW from the Kearl site is sufficient to negate the chronic toxicity in rainbow trout investigated in this study. [ABSTRACT FROM AUTHOR]
Copyright of Environmental Toxicology & Chemistry is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: GreenFILE
FullText Text:
  Availability: 0
Header DbId: 8gh
DbLabel: GreenFILE
An: 195127969
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Toxicity of oil sands process-affected water to early life stage rainbow trout (Oncorhynchus mykiss).
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Vega%2C+Valeria%22">Vega, Valeria</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Piggott%2C+Nina%22">Piggott, Nina</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cancelli%2C+Alexander+M%22">Cancelli, Alexander M</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kelly%2C+Barry+C%22">Kelly, Barry C</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Marlatt%2C+Vicki%22">Marlatt, Vicki</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gobas%2C+Frank+A+P+C%22">Gobas, Frank A P C</searchLink><relatesTo>5</relatesTo> (AUTHOR)<i> gobas@sfu.ca</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Environmental+Toxicology+%26+Chemistry%22">Environmental Toxicology & Chemistry</searchLink>. May2026, Vol. 45 Issue 5, p1144-1157. 14p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Chronic+toxicity+testing%22">Chronic toxicity testing</searchLink><br />*<searchLink fieldCode="DE" term="%22Water+pollution%22">Water pollution</searchLink><br />*<searchLink fieldCode="DE" term="%22Ecological+impact%22">Ecological impact</searchLink><br />*<searchLink fieldCode="DE" term="%22Poisons%22">Poisons</searchLink><br /><searchLink fieldCode="DE" term="%22Rainbow+trout%22">Rainbow trout</searchLink><br /><searchLink fieldCode="DE" term="%22Mortality%22">Mortality</searchLink><br /><searchLink fieldCode="DE" term="%22Naphthenic+acids%22">Naphthenic acids</searchLink><br /><searchLink fieldCode="DE" term="%22Pathological+anatomy%22">Pathological anatomy</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: To provide insights into the potential impacts of release of oil sands process-affected water (OSPW) into the environment, chronic toxicity tests on early life stage rainbow trout (ELS-RBT) were conducted. The objective of the testing was to better characterize the effects of OSPW from the Alberta Oil sands on swim-up fry mortality, development (fish length and width, yolk sac development), and deformities (skeletal, craniofacial, finfold, and edemas) as a function of OSPW dilution (%) and ∑O2-naphthenic acid (NA) concentrations. More than 95% mortality in ELS-RBT was observed in the range of 22% to 100% OSPW. Lethal concentrations of 50% of the test population (LC50) values expressed in terms of OSPW dilutions were 13.7 (SE 0.7), 10.6 (SE 0.5), and 12.7 (SE 0.5) % for OSPW collected in 2019, 2021, and 2022, respectively. Corresponding LC50 values for ∑O2-NAs concentrations were 2.8 (SE 0.14), 2.0 (SE 0.11), and 2.2 (SE 0.09) mg/L, respectively. Primary sublethal effects included delayed development, craniofacial defects, and evidence of cardiovascular toxicity, including pericardial and yolk sac edema and hemorrhaging. Evidence of sublethal developmental effects was observed at OSPW dilutions above 10% and corresponding ∑O2-NA concentrations above 1.69 mg/L. The only exception was for 17.1 (SE 3.3) % craniofacial deformities at OSPW concentrations of 3.2% and corresponding ∑O2-NA concentrations of 0.66 mg/L, but only for OSPW collected in 2019. The results from this indicate that a 20-fold or greater dilution (or a corresponding removal of OSPW) of the tested OSPW from the Kearl site is sufficient to negate the chronic toxicity in rainbow trout investigated in this study. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Environmental Toxicology & Chemistry is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=8gh&AN=195127969
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1093/etojnl/vgag012
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 14
        StartPage: 1144
    Subjects:
      – SubjectFull: Chronic toxicity testing
        Type: general
      – SubjectFull: Water pollution
        Type: general
      – SubjectFull: Ecological impact
        Type: general
      – SubjectFull: Poisons
        Type: general
      – SubjectFull: Rainbow trout
        Type: general
      – SubjectFull: Mortality
        Type: general
      – SubjectFull: Naphthenic acids
        Type: general
      – SubjectFull: Pathological anatomy
        Type: general
    Titles:
      – TitleFull: Toxicity of oil sands process-affected water to early life stage rainbow trout (Oncorhynchus mykiss).
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Vega, Valeria
      – PersonEntity:
          Name:
            NameFull: Piggott, Nina
      – PersonEntity:
          Name:
            NameFull: Cancelli, Alexander M
      – PersonEntity:
          Name:
            NameFull: Kelly, Barry C
      – PersonEntity:
          Name:
            NameFull: Marlatt, Vicki
      – PersonEntity:
          Name:
            NameFull: Gobas, Frank A P C
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 07307268
          Numbering:
            – Type: volume
              Value: 45
            – Type: issue
              Value: 5
          Titles:
            – TitleFull: Environmental Toxicology & Chemistry
              Type: main
ResultId 1