Effects of dietary thiaminase on reproductive traits in three populations of Atlantic salmon targeted for reintroduction into Lake Ontario
The fitness of reintroduced salmonids in Lake Ontario can be reduced by high levels of thiaminase in exotic prey consumed at the adult stage. If sensitivity to dietary thiaminase differs among the three Atlantic salmon populations targeted for reintroduction into Lake Ontario, this could significant...
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ftunivwestonta:oai:ir.lib.uwo.ca:etd-9265 2023-10-01T03:54:38+02:00 Effects of dietary thiaminase on reproductive traits in three populations of Atlantic salmon targeted for reintroduction into Lake Ontario Mitchell, Kimberly T 2020-01-22T21:00:00Z application/pdf https://ir.lib.uwo.ca/etd/6826 https://ir.lib.uwo.ca/context/etd/article/9265/viewcontent/auto_convert.pdf English eng Scholarship@Western https://ir.lib.uwo.ca/etd/6826 https://ir.lib.uwo.ca/context/etd/article/9265/viewcontent/auto_convert.pdf Electronic Thesis and Dissertation Repository Atlantic salmon thiamine sperm quality egg quality local adaptation Aquaculture and Fisheries Biodiversity Terrestrial and Aquatic Ecology text 2020 ftunivwestonta 2023-09-03T07:32:40Z The fitness of reintroduced salmonids in Lake Ontario can be reduced by high levels of thiaminase in exotic prey consumed at the adult stage. If sensitivity to dietary thiaminase differs among the three Atlantic salmon populations targeted for reintroduction into Lake Ontario, this could significantly influence their performance. I quantified the effects of experimental diets that contained high or low (control) levels of thiaminase on thiamine concentrations, survival, growth rate, and reproductive traits (sperm and egg quality) in Atlantic salmon from the three candidate source populations. Fish that consumed the high-thiaminase diet had comparable growth rates, but lower survival and muscle thiamine concentrations than control fish. Sperm count, velocity, motility and linearity, did not differ based on diet. Adult females fed the high-thiaminase diet resulted in lower egg thiamine concentrations and embryo survival. The effects of dietary thiaminase on reproductive traits did not differ among the tested populations. Text Atlantic salmon The University of Western Ontario: Scholarship@Western |
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Open Polar |
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The University of Western Ontario: Scholarship@Western |
op_collection_id |
ftunivwestonta |
language |
English |
topic |
Atlantic salmon thiamine sperm quality egg quality local adaptation Aquaculture and Fisheries Biodiversity Terrestrial and Aquatic Ecology |
spellingShingle |
Atlantic salmon thiamine sperm quality egg quality local adaptation Aquaculture and Fisheries Biodiversity Terrestrial and Aquatic Ecology Mitchell, Kimberly T Effects of dietary thiaminase on reproductive traits in three populations of Atlantic salmon targeted for reintroduction into Lake Ontario |
topic_facet |
Atlantic salmon thiamine sperm quality egg quality local adaptation Aquaculture and Fisheries Biodiversity Terrestrial and Aquatic Ecology |
description |
The fitness of reintroduced salmonids in Lake Ontario can be reduced by high levels of thiaminase in exotic prey consumed at the adult stage. If sensitivity to dietary thiaminase differs among the three Atlantic salmon populations targeted for reintroduction into Lake Ontario, this could significantly influence their performance. I quantified the effects of experimental diets that contained high or low (control) levels of thiaminase on thiamine concentrations, survival, growth rate, and reproductive traits (sperm and egg quality) in Atlantic salmon from the three candidate source populations. Fish that consumed the high-thiaminase diet had comparable growth rates, but lower survival and muscle thiamine concentrations than control fish. Sperm count, velocity, motility and linearity, did not differ based on diet. Adult females fed the high-thiaminase diet resulted in lower egg thiamine concentrations and embryo survival. The effects of dietary thiaminase on reproductive traits did not differ among the tested populations. |
format |
Text |
author |
Mitchell, Kimberly T |
author_facet |
Mitchell, Kimberly T |
author_sort |
Mitchell, Kimberly T |
title |
Effects of dietary thiaminase on reproductive traits in three populations of Atlantic salmon targeted for reintroduction into Lake Ontario |
title_short |
Effects of dietary thiaminase on reproductive traits in three populations of Atlantic salmon targeted for reintroduction into Lake Ontario |
title_full |
Effects of dietary thiaminase on reproductive traits in three populations of Atlantic salmon targeted for reintroduction into Lake Ontario |
title_fullStr |
Effects of dietary thiaminase on reproductive traits in three populations of Atlantic salmon targeted for reintroduction into Lake Ontario |
title_full_unstemmed |
Effects of dietary thiaminase on reproductive traits in three populations of Atlantic salmon targeted for reintroduction into Lake Ontario |
title_sort |
effects of dietary thiaminase on reproductive traits in three populations of atlantic salmon targeted for reintroduction into lake ontario |
publisher |
Scholarship@Western |
publishDate |
2020 |
url |
https://ir.lib.uwo.ca/etd/6826 https://ir.lib.uwo.ca/context/etd/article/9265/viewcontent/auto_convert.pdf |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Electronic Thesis and Dissertation Repository |
op_relation |
https://ir.lib.uwo.ca/etd/6826 https://ir.lib.uwo.ca/context/etd/article/9265/viewcontent/auto_convert.pdf |
_version_ |
1778522475675516928 |