Toxicity of weathered sediment-bound dilbit to freshwater fish and invertebrates

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dc.contributor.authorEveritt, Sean Lawrence
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorPyle, Gregory
dc.contributor.supervisorWiseman, Steve
dc.date.accessioned2020-04-16T20:00:44Z
dc.date.available2020-04-16T20:00:44Z
dc.date.issued2020
dc.degree.levelMastersen_US
dc.description.abstractBitumen from the Alberta oil sands must be diluted to form diluted bitumen (dilbit) to facilitate transport through pipelines, yet little is known about its effects on aquatic organisms after a spill. Environmental weathering processes such as evaporation and sediment interaction manipulate spilled dilbit, which could affect its fate and toxicity in the environment. However, most studies to date that have characterized effects of dilbit to aquatic organisms have not incorporated weathering. In the present study, zebrafish (Danio rerio) embryos and adult freshwater amphipods (Hyalella azteca) were exposed to weathered sediment-bound dilbit. Sediment-bound dilbit exacerbated adverse effects associated with dilbit exposure due to oil-mineral aggregates directly interacting with amphipods and zebrafish embryos during exposure. As oil sands production expands, it is important to incorporate weathering processes when testing the toxicity of dilbit to aquatic organisms because sediment-bound dilbit can severely affect the health of freshwater fish and invertebrates.en_US
dc.identifier.urihttps://hdl.handle.net/10133/5705
dc.language.isoen_USen_US
dc.proquest.subject0383en_US
dc.proquest.subject0307en_US
dc.proquest.subject0768en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : University of Lethbridge, Department of Biological Sciencesen_US
dc.publisher.departmentDepartment of Biological Sciencesen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectBitumenen_US
dc.subjectOil spills -- Environmental aspectsen_US
dc.subjectFreshwater organisms -- Effect of oil spills onen_US
dc.subjectFreshwater organisms -- Effect of contaminated sediments onen_US
dc.subjectFreshwater invertebrates -- Effect of oil spills onen_US
dc.subjectFreshwater invertebrates -- Effect of contaminated sediments onen_US
dc.subjectAquatic organisms -- Effect of oil spills onen_US
dc.subjectAquatic organisms -- Effect of contaminated sediments onen_US
dc.subjectZebra danio -- Effect of oil spills on -- Researchen_US
dc.subjectZebra danio -- Effect of contaminated sediments on -- Researchen_US
dc.subjectZebra danios as laboratory animalsen_US
dc.subjectHyalella -- Effect of oil spills on -- Researchen_US
dc.subjectHyalella -- Effect of contaminated sediments on -- Researchen_US
dc.subjectPetroleum pipelines -- Accidents -- Environmental aspectsen_US
dc.subjectPetroleum pipeline failures -- Environmental aspectsen_US
dc.subjectdiluted bitumenen_US
dc.subjectdilbiten_US
dc.subjectenvironmental weatheringen_US
dc.subjectsediment-bound dilbiten_US
dc.subjectfreshwater aquatic organismsen_US
dc.subjectoil-mineral aggregatesen_US
dc.subjectembryo toxicityen_US
dc.subjectpipeline spillsen_US
dc.subjectDissertations, Academicen_US
dc.titleToxicity of weathered sediment-bound dilbit to freshwater fish and invertebratesen_US
dc.typeThesisen_US
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