Temporal analysis shows relaxed genetic erosion following improved stocking practices in a subarctic transnational brown trout population
Maintaining standing genetic variation is a challenge in human-dominated landscapes. We used genetic (i.e., 16 short tandem repeats) and morphological (i.e., length and weight) measurements of 593 contemporary and historical brown trout (Salmo trutta) samples to study fine-scale and short-term impac...
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Online Access: | https://hdl.handle.net/10037/23158 https://doi.org/10.1038/s41598-021-96681-1 |
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ftunivtroemsoe:oai:munin.uit.no:10037/23158 2023-05-15T17:54:41+02:00 Temporal analysis shows relaxed genetic erosion following improved stocking practices in a subarctic transnational brown trout population Klutsch, Cornelya Maduna, Simo Polikarpova, Natalia Forfang, Kristin Beddari, Benedicte Lissner Gjelland, Karl Øystein Aspholm, Paul Eric Amundsen, Per-Arne Hagen, Snorre 2021-08-30 https://hdl.handle.net/10037/23158 https://doi.org/10.1038/s41598-021-96681-1 eng eng Nature Research Scientific Reports Klutsch C, Maduna S, Polikarpova N, Forfang K, Beddari BL, Gjelland KO, Aspholm P.E., Amundsen P-A, Hagen SB. Temporal analysis shows relaxed genetic erosion following improved stocking practices in a subarctic transnational brown trout population. Scientific Reports. 2021;11(1) FRIDAID 1930898 doi:10.1038/s41598-021-96681-1 2045-2322 https://hdl.handle.net/10037/23158 openAccess Copyright 2021 The Author(s) VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2021 ftunivtroemsoe https://doi.org/10.1038/s41598-021-96681-1 2021-12-01T23:54:51Z Maintaining standing genetic variation is a challenge in human-dominated landscapes. We used genetic (i.e., 16 short tandem repeats) and morphological (i.e., length and weight) measurements of 593 contemporary and historical brown trout (Salmo trutta) samples to study fine-scale and short-term impacts of different management practices. These had changed from traditional breeding practices, using the same broodstock for several years, to modern breeding practices, including annual broodstock replacement, in the transnational subarctic Pasvik River. Using population genetic structure analyses (i.e., Bayesian assignment tests, DAPCs, and PCAs), four historical genetic clusters (E2001A-D), likely representing family lineages resulting from different crosses, were found in zone E. These groups were characterized by consistently lower genetic diversity, higher within-group relatedness, lower effective population size, and significantly smaller body size than contemporary stocked (E2001E) and wild fish (E2001F). However, even current breeding practices are insufficient to prevent genetic diversity loss and morphological changes as demonstrated by on average smaller body sizes and recent genetic bottleneck signatures in the modern breeding stock compared to wild fish. Conservation management must evaluate breeding protocols for stocking programs and assess if these can preserve remaining natural genetic diversity and morphology in brown trout for long-term preservation of freshwater fauna. Article in Journal/Newspaper Pasvik Subarctic University of Tromsø: Munin Open Research Archive Pasvik ENVELOPE(30.580,30.580,69.810,69.810) Scientific Reports 11 1 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Klutsch, Cornelya Maduna, Simo Polikarpova, Natalia Forfang, Kristin Beddari, Benedicte Lissner Gjelland, Karl Øystein Aspholm, Paul Eric Amundsen, Per-Arne Hagen, Snorre Temporal analysis shows relaxed genetic erosion following improved stocking practices in a subarctic transnational brown trout population |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
Maintaining standing genetic variation is a challenge in human-dominated landscapes. We used genetic (i.e., 16 short tandem repeats) and morphological (i.e., length and weight) measurements of 593 contemporary and historical brown trout (Salmo trutta) samples to study fine-scale and short-term impacts of different management practices. These had changed from traditional breeding practices, using the same broodstock for several years, to modern breeding practices, including annual broodstock replacement, in the transnational subarctic Pasvik River. Using population genetic structure analyses (i.e., Bayesian assignment tests, DAPCs, and PCAs), four historical genetic clusters (E2001A-D), likely representing family lineages resulting from different crosses, were found in zone E. These groups were characterized by consistently lower genetic diversity, higher within-group relatedness, lower effective population size, and significantly smaller body size than contemporary stocked (E2001E) and wild fish (E2001F). However, even current breeding practices are insufficient to prevent genetic diversity loss and morphological changes as demonstrated by on average smaller body sizes and recent genetic bottleneck signatures in the modern breeding stock compared to wild fish. Conservation management must evaluate breeding protocols for stocking programs and assess if these can preserve remaining natural genetic diversity and morphology in brown trout for long-term preservation of freshwater fauna. |
format |
Article in Journal/Newspaper |
author |
Klutsch, Cornelya Maduna, Simo Polikarpova, Natalia Forfang, Kristin Beddari, Benedicte Lissner Gjelland, Karl Øystein Aspholm, Paul Eric Amundsen, Per-Arne Hagen, Snorre |
author_facet |
Klutsch, Cornelya Maduna, Simo Polikarpova, Natalia Forfang, Kristin Beddari, Benedicte Lissner Gjelland, Karl Øystein Aspholm, Paul Eric Amundsen, Per-Arne Hagen, Snorre |
author_sort |
Klutsch, Cornelya |
title |
Temporal analysis shows relaxed genetic erosion following improved stocking practices in a subarctic transnational brown trout population |
title_short |
Temporal analysis shows relaxed genetic erosion following improved stocking practices in a subarctic transnational brown trout population |
title_full |
Temporal analysis shows relaxed genetic erosion following improved stocking practices in a subarctic transnational brown trout population |
title_fullStr |
Temporal analysis shows relaxed genetic erosion following improved stocking practices in a subarctic transnational brown trout population |
title_full_unstemmed |
Temporal analysis shows relaxed genetic erosion following improved stocking practices in a subarctic transnational brown trout population |
title_sort |
temporal analysis shows relaxed genetic erosion following improved stocking practices in a subarctic transnational brown trout population |
publisher |
Nature Research |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/23158 https://doi.org/10.1038/s41598-021-96681-1 |
long_lat |
ENVELOPE(30.580,30.580,69.810,69.810) |
geographic |
Pasvik |
geographic_facet |
Pasvik |
genre |
Pasvik Subarctic |
genre_facet |
Pasvik Subarctic |
op_relation |
Scientific Reports Klutsch C, Maduna S, Polikarpova N, Forfang K, Beddari BL, Gjelland KO, Aspholm P.E., Amundsen P-A, Hagen SB. Temporal analysis shows relaxed genetic erosion following improved stocking practices in a subarctic transnational brown trout population. Scientific Reports. 2021;11(1) FRIDAID 1930898 doi:10.1038/s41598-021-96681-1 2045-2322 https://hdl.handle.net/10037/23158 |
op_rights |
openAccess Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.1038/s41598-021-96681-1 |
container_title |
Scientific Reports |
container_volume |
11 |
container_issue |
1 |
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1766162478267367424 |