Lipids in Anadromous Northern Dolly Varden (Salvelinus malma malma)
Anadromous Arctic fish species have adapted to a particular environment by evolving unique lipid cycling strategies such as storing large amounts of lipid during times of high productivity in order to survive long migrations, spawning events, and seasonal variation in food availability. Research on...
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ftunivmanitoba:oai:mspace.lib.umanitoba.ca:1993/37792 2024-04-28T08:08:03+00:00 Lipids in Anadromous Northern Dolly Varden (Salvelinus malma malma) Kulchycki, Lisa Loseto, Lisa Davoren, Gail 2023-11-17T21:37:24Z application/pdf http://hdl.handle.net/1993/37792 eng eng http://hdl.handle.net/1993/37792 open access Northern Dolly Varden Lipids Lipid Cycling Anadromous Arctic Fish bachelor thesis 2023 ftunivmanitoba 2024-04-03T14:01:32Z Anadromous Arctic fish species have adapted to a particular environment by evolving unique lipid cycling strategies such as storing large amounts of lipid during times of high productivity in order to survive long migrations, spawning events, and seasonal variation in food availability. Research on lipid content and storage location in the body is very limited, especially regarding the northern Dolly Varden, a fish species important culturally and for sustenance to the Indigenous Peoples in the western Canadian Arctic that is listed as ‘Special Concern’ under Species at Risk legislation. Lipid content in anadromous Dolly Varden obtained from two marine (coastal) (summer) and two freshwater (fall) locations were examined and compared to test for differences in percent lipid between locations/seasons. Percent lipid was compared between the muscle and homogenized whole-body of individuals caught in freshwater. Muscle lipid content was significantly different between freshwater locations and one of the marine locations (~34% higher from the marine location). One marine location contained fish with unexpectedly high muscle lipid percent. A weak/moderate linear relationship was found between lipid percent in the muscle tissue and whole-body tissue of the same individuals (r2= 0.2013 when sex was an added variable; r2= 0.4204 when reproductive status was an added variable), and reproductive status influenced this relationship. Sex of the individual did not affect lipid content in the muscle nor on the relationship between percent lipids in muscle and whole-body. Changing environmental factors due to climate change such as the timing of the ice melt and phytoplankton blooms can affect energy exchange through the food web, and thus research on the nature of fluctuating energy and lipid levels is needed to aid in conservation efforts of Arctic species. Bachelor Thesis Arctic Climate change Phytoplankton MSpace at the University of Manitoba |
institution |
Open Polar |
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MSpace at the University of Manitoba |
op_collection_id |
ftunivmanitoba |
language |
English |
topic |
Northern Dolly Varden Lipids Lipid Cycling Anadromous Arctic Fish |
spellingShingle |
Northern Dolly Varden Lipids Lipid Cycling Anadromous Arctic Fish Kulchycki, Lisa Lipids in Anadromous Northern Dolly Varden (Salvelinus malma malma) |
topic_facet |
Northern Dolly Varden Lipids Lipid Cycling Anadromous Arctic Fish |
description |
Anadromous Arctic fish species have adapted to a particular environment by evolving unique lipid cycling strategies such as storing large amounts of lipid during times of high productivity in order to survive long migrations, spawning events, and seasonal variation in food availability. Research on lipid content and storage location in the body is very limited, especially regarding the northern Dolly Varden, a fish species important culturally and for sustenance to the Indigenous Peoples in the western Canadian Arctic that is listed as ‘Special Concern’ under Species at Risk legislation. Lipid content in anadromous Dolly Varden obtained from two marine (coastal) (summer) and two freshwater (fall) locations were examined and compared to test for differences in percent lipid between locations/seasons. Percent lipid was compared between the muscle and homogenized whole-body of individuals caught in freshwater. Muscle lipid content was significantly different between freshwater locations and one of the marine locations (~34% higher from the marine location). One marine location contained fish with unexpectedly high muscle lipid percent. A weak/moderate linear relationship was found between lipid percent in the muscle tissue and whole-body tissue of the same individuals (r2= 0.2013 when sex was an added variable; r2= 0.4204 when reproductive status was an added variable), and reproductive status influenced this relationship. Sex of the individual did not affect lipid content in the muscle nor on the relationship between percent lipids in muscle and whole-body. Changing environmental factors due to climate change such as the timing of the ice melt and phytoplankton blooms can affect energy exchange through the food web, and thus research on the nature of fluctuating energy and lipid levels is needed to aid in conservation efforts of Arctic species. |
author2 |
Loseto, Lisa Davoren, Gail |
format |
Bachelor Thesis |
author |
Kulchycki, Lisa |
author_facet |
Kulchycki, Lisa |
author_sort |
Kulchycki, Lisa |
title |
Lipids in Anadromous Northern Dolly Varden (Salvelinus malma malma) |
title_short |
Lipids in Anadromous Northern Dolly Varden (Salvelinus malma malma) |
title_full |
Lipids in Anadromous Northern Dolly Varden (Salvelinus malma malma) |
title_fullStr |
Lipids in Anadromous Northern Dolly Varden (Salvelinus malma malma) |
title_full_unstemmed |
Lipids in Anadromous Northern Dolly Varden (Salvelinus malma malma) |
title_sort |
lipids in anadromous northern dolly varden (salvelinus malma malma) |
publishDate |
2023 |
url |
http://hdl.handle.net/1993/37792 |
genre |
Arctic Climate change Phytoplankton |
genre_facet |
Arctic Climate change Phytoplankton |
op_relation |
http://hdl.handle.net/1993/37792 |
op_rights |
open access |
_version_ |
1797576974551482368 |