Diluted bitumen exposure in juvenile Atlantic and sockeye salmon: Whole-animal, metabolic and molecular responses
As Canada’s oil sands industry expands, the volume of diluted bitumen (dilbit) transported across North America increases, as does the risk of environmental contamination. This study examined the effects of dilbit exposure on swimming performance (Ucrit) and subcellular responses in Atlantic salmon...
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University of Guelph
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ftunivguelph:oai:atrium.lib.uoguelph.ca:10214/17627 2024-06-23T07:51:13+00:00 Diluted bitumen exposure in juvenile Atlantic and sockeye salmon: Whole-animal, metabolic and molecular responses Avey, Sean Gillis, Todd 2019-12-06 application/pdf http://hdl.handle.net/10214/17627 en eng University of Guelph http://hdl.handle.net/10214/17627 All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated. crude oil dilbit PAH fish salmon Ucrit heart skeletal muscle cardiac muscle aerobic metabolism Thesis 2019 ftunivguelph 2024-05-29T00:05:18Z As Canada’s oil sands industry expands, the volume of diluted bitumen (dilbit) transported across North America increases, as does the risk of environmental contamination. This study examined the effects of dilbit exposure on swimming performance (Ucrit) and subcellular responses in Atlantic salmon cardiac and skeletal muscle. Ucrit was unaffected in fish exposed to the highest dilbit concentration, but the heart decreased reliance on lipids for energy production. Whereas, fish exposed to the lowest dilbit concentration increased Ucrit and their reliance on anaerobic metabolism in cardiac and red skeletal muscle. Both dilbit concentrations activated Phase I biotransformation in liver and muscle tissues, and upregulated stress-related genes in white muscle. Lastly, oxidative stress genes were downregulated in dilbit-exposed Atlantic salmon hearts but upregulated in sockeye hearts exposed similarly to dilbit. Results demonstrate that dilbit exposure causes subcellular tissue responses in Atlantic salmon, which are unique compared to sockeye, without impairing swimming performance. Fisheries and Oceans Canada 2020-11-12 Thesis Atlantic salmon University of Guelph: DSpace digital archive Canada Sockeye ENVELOPE(-130.143,-130.143,54.160,54.160) |
institution |
Open Polar |
collection |
University of Guelph: DSpace digital archive |
op_collection_id |
ftunivguelph |
language |
English |
topic |
crude oil dilbit PAH fish salmon Ucrit heart skeletal muscle cardiac muscle aerobic metabolism |
spellingShingle |
crude oil dilbit PAH fish salmon Ucrit heart skeletal muscle cardiac muscle aerobic metabolism Avey, Sean Diluted bitumen exposure in juvenile Atlantic and sockeye salmon: Whole-animal, metabolic and molecular responses |
topic_facet |
crude oil dilbit PAH fish salmon Ucrit heart skeletal muscle cardiac muscle aerobic metabolism |
description |
As Canada’s oil sands industry expands, the volume of diluted bitumen (dilbit) transported across North America increases, as does the risk of environmental contamination. This study examined the effects of dilbit exposure on swimming performance (Ucrit) and subcellular responses in Atlantic salmon cardiac and skeletal muscle. Ucrit was unaffected in fish exposed to the highest dilbit concentration, but the heart decreased reliance on lipids for energy production. Whereas, fish exposed to the lowest dilbit concentration increased Ucrit and their reliance on anaerobic metabolism in cardiac and red skeletal muscle. Both dilbit concentrations activated Phase I biotransformation in liver and muscle tissues, and upregulated stress-related genes in white muscle. Lastly, oxidative stress genes were downregulated in dilbit-exposed Atlantic salmon hearts but upregulated in sockeye hearts exposed similarly to dilbit. Results demonstrate that dilbit exposure causes subcellular tissue responses in Atlantic salmon, which are unique compared to sockeye, without impairing swimming performance. Fisheries and Oceans Canada 2020-11-12 |
author2 |
Gillis, Todd |
format |
Thesis |
author |
Avey, Sean |
author_facet |
Avey, Sean |
author_sort |
Avey, Sean |
title |
Diluted bitumen exposure in juvenile Atlantic and sockeye salmon: Whole-animal, metabolic and molecular responses |
title_short |
Diluted bitumen exposure in juvenile Atlantic and sockeye salmon: Whole-animal, metabolic and molecular responses |
title_full |
Diluted bitumen exposure in juvenile Atlantic and sockeye salmon: Whole-animal, metabolic and molecular responses |
title_fullStr |
Diluted bitumen exposure in juvenile Atlantic and sockeye salmon: Whole-animal, metabolic and molecular responses |
title_full_unstemmed |
Diluted bitumen exposure in juvenile Atlantic and sockeye salmon: Whole-animal, metabolic and molecular responses |
title_sort |
diluted bitumen exposure in juvenile atlantic and sockeye salmon: whole-animal, metabolic and molecular responses |
publisher |
University of Guelph |
publishDate |
2019 |
url |
http://hdl.handle.net/10214/17627 |
long_lat |
ENVELOPE(-130.143,-130.143,54.160,54.160) |
geographic |
Canada Sockeye |
geographic_facet |
Canada Sockeye |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_relation |
http://hdl.handle.net/10214/17627 |
op_rights |
All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated. |
_version_ |
1802642243931078656 |