2026-09-19T18:46:07.447372900Zhttps://opus.uleth.ca/server/oai/requestoai:opus.uleth.ca:10133/47762017-02-21T21:08:34Zcom_10133_3346com_10133_1com_10133_296col_10133_3347col_10133_298
ULethbridge OPUS Repository
supervisor
Pyle, Gregory
author
Chow, Sylvia S.T.
author
University of Lethbridge. Faculty of Arts and Science
2017-02-10T18:22:08Z
2017-02-10T18:22:08Z
2016
https://hdl.handle.net/handle/10133/4776
The lower Athabasca River basin of northern Alberta, Canada is situated within bitumen-rich deposits, where oil sands development is a common occurrence. A transplant and chronic exposure experiment between sites containing natural bitumen (NB) and natural bitumen-oil sands area of industry (NB-OSA) was conducted using fathead minnows (Pimephales promelas). Reference fish chemosensation and respiration was impaired and lowered, respectively, to levels observed in the fish NB-OSA of industry after having been transplanted to either contaminated sites. Fish previously exposed to contaminants had lower olfactory acuity and respiration rates than reference fish, remaining unchanged after exposure at either site. Fish pre-exposed to contaminats exhibit limited ability to deal with additional stressors compared to reference fish, as observed by the lower survival rates in these bituminous fish populations. This limited stress coping capabilities demonstrate native fish populations do not possess an advantage within the aquatic systems in the basin.
en_US
adaptive phenotypic plasticity
anthropogenic bitumen sources
bitumen-related toxicants
fish populations
natural bitumen sources
reciprocal cross-transplant
Effects of bituminous contaminants on fathead minnows (Pimephales promelas) of the Lower Athabasca River Basin
Thesis
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URL
http://localhost:4000/bitstreams/327db3fb-0f05-4f2e-90d4-8897c8bad6a4/download
File
MD5
27d04c49911139b03d46b7b0d963f1ed
3171943
application/pdf
CHOW_SYLVIA_MSC_2016.pdf
URL
http://localhost:4000/bitstreams/44136cbc-5f42-4510-b221-df9f6011c1ac/download
File
MD5
5e7cbf3a8139da013cc4dccc50b371fd
248411
text/plain
CHOW_SYLVIA_MSC_2016.pdf.txt