Early-life fitness trait variation among divergent European and North American farmed and Newfoundland wild Atlantic salmon populations
It has long been clear that interbreeding between domesticated and wild Atlantic salmon can lead to negative fitness consequences for native populations. Few studies, however, have examined these consequences at critical early life stages, particularly in the context of distinct geographical and anc...
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ftdoajarticles:oai:doaj.org/article:adc344b75bdc4afb8151b4e851df5b6b 2023-05-15T15:31:50+02:00 Early-life fitness trait variation among divergent European and North American farmed and Newfoundland wild Atlantic salmon populations SS Islam BF Wringe K Bøe IR Bradbury IA Fleming 2021-08-01T00:00:00Z https://doi.org/10.3354/aei00412 https://doaj.org/article/adc344b75bdc4afb8151b4e851df5b6b EN eng Inter-Research https://www.int-res.com/abstracts/aei/v13/p323-337/ https://doaj.org/toc/1869-215X https://doaj.org/toc/1869-7534 1869-215X 1869-7534 doi:10.3354/aei00412 https://doaj.org/article/adc344b75bdc4afb8151b4e851df5b6b Aquaculture Environment Interactions, Vol 13, Pp 323-337 (2021) Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 article 2021 ftdoajarticles https://doi.org/10.3354/aei00412 2022-12-31T13:18:49Z It has long been clear that interbreeding between domesticated and wild Atlantic salmon can lead to negative fitness consequences for native populations. Few studies, however, have examined these consequences at critical early life stages, particularly in the context of distinct geographical and ancestral relationships among populations as well domestication selection. In Newfoundland (NF), Canada, while the majority of aquaculture sites use the North American (NA) Saint John River strain, site-specific permission has been granted to farm a strain of European origin (EO). We designed a common-garden experiment to compare fitness-related traits (e.g. development time, survival, size and growth) at different early-life stages (eye development, hatch and yolk absorption) among EO and NA farmed, 2 NF wild and F1 hybrid groups. Significant differences (p < 0.001) were observed in development time, survival, growth and energy conversion among farmed, F1 hybrid and wild populations. While pure populations (farmed and wild) differed amongst one another, we found few differences in fitness-related traits between F1 hybrids and their maternal wild/farmed strains. This suggests that the early-life fitness consequences of F1 hybridization will be largely manifested through the action of maternal effects. Additionally, significant associations between the maternal effects of egg size and alevin development time, size, survival, growth, condition and energy conversion efficiency were found. These findings suggest that early-life fitness-related trait differences among farmed, wild and their related F1 hybrids are generated by the geographic and ancestral relationship and maternal effects of egg size and less so by domestication selection. Article in Journal/Newspaper Atlantic salmon Newfoundland Directory of Open Access Journals: DOAJ Articles Canada Aquaculture Environment Interactions 13 323 337 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 |
spellingShingle |
Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 SS Islam BF Wringe K Bøe IR Bradbury IA Fleming Early-life fitness trait variation among divergent European and North American farmed and Newfoundland wild Atlantic salmon populations |
topic_facet |
Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 |
description |
It has long been clear that interbreeding between domesticated and wild Atlantic salmon can lead to negative fitness consequences for native populations. Few studies, however, have examined these consequences at critical early life stages, particularly in the context of distinct geographical and ancestral relationships among populations as well domestication selection. In Newfoundland (NF), Canada, while the majority of aquaculture sites use the North American (NA) Saint John River strain, site-specific permission has been granted to farm a strain of European origin (EO). We designed a common-garden experiment to compare fitness-related traits (e.g. development time, survival, size and growth) at different early-life stages (eye development, hatch and yolk absorption) among EO and NA farmed, 2 NF wild and F1 hybrid groups. Significant differences (p < 0.001) were observed in development time, survival, growth and energy conversion among farmed, F1 hybrid and wild populations. While pure populations (farmed and wild) differed amongst one another, we found few differences in fitness-related traits between F1 hybrids and their maternal wild/farmed strains. This suggests that the early-life fitness consequences of F1 hybridization will be largely manifested through the action of maternal effects. Additionally, significant associations between the maternal effects of egg size and alevin development time, size, survival, growth, condition and energy conversion efficiency were found. These findings suggest that early-life fitness-related trait differences among farmed, wild and their related F1 hybrids are generated by the geographic and ancestral relationship and maternal effects of egg size and less so by domestication selection. |
format |
Article in Journal/Newspaper |
author |
SS Islam BF Wringe K Bøe IR Bradbury IA Fleming |
author_facet |
SS Islam BF Wringe K Bøe IR Bradbury IA Fleming |
author_sort |
SS Islam |
title |
Early-life fitness trait variation among divergent European and North American farmed and Newfoundland wild Atlantic salmon populations |
title_short |
Early-life fitness trait variation among divergent European and North American farmed and Newfoundland wild Atlantic salmon populations |
title_full |
Early-life fitness trait variation among divergent European and North American farmed and Newfoundland wild Atlantic salmon populations |
title_fullStr |
Early-life fitness trait variation among divergent European and North American farmed and Newfoundland wild Atlantic salmon populations |
title_full_unstemmed |
Early-life fitness trait variation among divergent European and North American farmed and Newfoundland wild Atlantic salmon populations |
title_sort |
early-life fitness trait variation among divergent european and north american farmed and newfoundland wild atlantic salmon populations |
publisher |
Inter-Research |
publishDate |
2021 |
url |
https://doi.org/10.3354/aei00412 https://doaj.org/article/adc344b75bdc4afb8151b4e851df5b6b |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Atlantic salmon Newfoundland |
genre_facet |
Atlantic salmon Newfoundland |
op_source |
Aquaculture Environment Interactions, Vol 13, Pp 323-337 (2021) |
op_relation |
https://www.int-res.com/abstracts/aei/v13/p323-337/ https://doaj.org/toc/1869-215X https://doaj.org/toc/1869-7534 1869-215X 1869-7534 doi:10.3354/aei00412 https://doaj.org/article/adc344b75bdc4afb8151b4e851df5b6b |
op_doi |
https://doi.org/10.3354/aei00412 |
container_title |
Aquaculture Environment Interactions |
container_volume |
13 |
container_start_page |
323 |
op_container_end_page |
337 |
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