Fitness effects of assisted gene flow in an endangered salmonid population
Assisted gene flow is increasingly used to combat severe population declines. However, the associated risks, such as outbreeding depression, are often insufficiently assessed. Here, we studied the impact of assisted gene flow on the fitness of a highly endangered landlocked salmon population (Salmo...
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ftjyvaeskylaenun:oai:jyx.jyu.fi:123456789/92525 2024-04-21T07:57:25+00:00 Fitness effects of assisted gene flow in an endangered salmonid population Klemme, Ines Pysäys, Joonas Hyvärinen, Pekka Karvonen, Anssi 2024 application/pdf fulltext http://urn.fi/URN:NBN:fi:jyu-202401021029 eng eng Wiley Conservation Science and Practice 2578-4854 1 6 310632 43521 10.1111/csp2.13058 Research Council of Finland Centre for Economic Development, Transport and the Environment of Lapland Suomen Akatemia Lapin ELY-keskus Klemme, I., Pysäys, J., Hyvärinen, P., & Karvonen, A. (2024). Fitness effects of assisted gene flow in an endangered salmonid population. Conservation Science and Practice , 6 (1), Article e13058. https://doi.org/10.1111/csp2.13058 CONVID_197385754 URN:NBN:fi:jyu-202401021029 http://urn.fi/URN:NBN:fi:jyu-202401021029 CC BY 4.0 © 2023 The Authors openAccess https://creativecommons.org/licenses/by/4.0/ assisted gene flow growth rate heterosis landlocked salmon outbreeding depression parasite infection predation risk geenit populaatiot lajiensuojelu heteroosi lohi article http://purl.org/eprint/type/JournalArticle http://purl.org/coar/resource_type/c_2df8fbb1 publishedVersion A1 2024 ftjyvaeskylaenun 2024-03-27T15:16:29Z Assisted gene flow is increasingly used to combat severe population declines. However, the associated risks, such as outbreeding depression, are often insufficiently assessed. Here, we studied the impact of assisted gene flow on the fitness of a highly endangered landlocked salmon population (Salmo salar m. sebago) from the lake Saimaa complex (Finland), using an anadromous Atlantic salmon population (S. salar) as donor. We released individuals of both parental populations and their hybrids into seminatural streams, monitoring their survival under predation risk from Northern pike (Esox lucius) and their growth on a natural diet. Before release, we exposed half of the salmon to the parasite Diplostomum pseudospathaceum to study whether assisted gene flow affects infection susceptibility, which could indirectly shape predation susceptibility and growth. The parental populations differed in both studied traits and the hybrids showed intermediate values. Relative to the target landlocked salmon population, hybrids experienced 21–26% lower survival, but 1.4–2.2% higher growth. They also carried 0.6–2.8 more parasites than the landlocked salmon, contributing to survival differences. These findings indicate that assisted gene flow can induce both negative and positive fitness effects. We propose that the overall net effects of this conservation tool need to be carefully evaluated before its implementation. peerReviewed Article in Journal/Newspaper Atlantic salmon Salmo salar JYX - Jyväskylä University Digital Archive |
institution |
Open Polar |
collection |
JYX - Jyväskylä University Digital Archive |
op_collection_id |
ftjyvaeskylaenun |
language |
English |
topic |
assisted gene flow growth rate heterosis landlocked salmon outbreeding depression parasite infection predation risk geenit populaatiot lajiensuojelu heteroosi lohi |
spellingShingle |
assisted gene flow growth rate heterosis landlocked salmon outbreeding depression parasite infection predation risk geenit populaatiot lajiensuojelu heteroosi lohi Klemme, Ines Pysäys, Joonas Hyvärinen, Pekka Karvonen, Anssi Fitness effects of assisted gene flow in an endangered salmonid population |
topic_facet |
assisted gene flow growth rate heterosis landlocked salmon outbreeding depression parasite infection predation risk geenit populaatiot lajiensuojelu heteroosi lohi |
description |
Assisted gene flow is increasingly used to combat severe population declines. However, the associated risks, such as outbreeding depression, are often insufficiently assessed. Here, we studied the impact of assisted gene flow on the fitness of a highly endangered landlocked salmon population (Salmo salar m. sebago) from the lake Saimaa complex (Finland), using an anadromous Atlantic salmon population (S. salar) as donor. We released individuals of both parental populations and their hybrids into seminatural streams, monitoring their survival under predation risk from Northern pike (Esox lucius) and their growth on a natural diet. Before release, we exposed half of the salmon to the parasite Diplostomum pseudospathaceum to study whether assisted gene flow affects infection susceptibility, which could indirectly shape predation susceptibility and growth. The parental populations differed in both studied traits and the hybrids showed intermediate values. Relative to the target landlocked salmon population, hybrids experienced 21–26% lower survival, but 1.4–2.2% higher growth. They also carried 0.6–2.8 more parasites than the landlocked salmon, contributing to survival differences. These findings indicate that assisted gene flow can induce both negative and positive fitness effects. We propose that the overall net effects of this conservation tool need to be carefully evaluated before its implementation. peerReviewed |
format |
Article in Journal/Newspaper |
author |
Klemme, Ines Pysäys, Joonas Hyvärinen, Pekka Karvonen, Anssi |
author_facet |
Klemme, Ines Pysäys, Joonas Hyvärinen, Pekka Karvonen, Anssi |
author_sort |
Klemme, Ines |
title |
Fitness effects of assisted gene flow in an endangered salmonid population |
title_short |
Fitness effects of assisted gene flow in an endangered salmonid population |
title_full |
Fitness effects of assisted gene flow in an endangered salmonid population |
title_fullStr |
Fitness effects of assisted gene flow in an endangered salmonid population |
title_full_unstemmed |
Fitness effects of assisted gene flow in an endangered salmonid population |
title_sort |
fitness effects of assisted gene flow in an endangered salmonid population |
publisher |
Wiley |
publishDate |
2024 |
url |
http://urn.fi/URN:NBN:fi:jyu-202401021029 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
Conservation Science and Practice 2578-4854 1 6 310632 43521 10.1111/csp2.13058 Research Council of Finland Centre for Economic Development, Transport and the Environment of Lapland Suomen Akatemia Lapin ELY-keskus Klemme, I., Pysäys, J., Hyvärinen, P., & Karvonen, A. (2024). Fitness effects of assisted gene flow in an endangered salmonid population. Conservation Science and Practice , 6 (1), Article e13058. https://doi.org/10.1111/csp2.13058 CONVID_197385754 URN:NBN:fi:jyu-202401021029 http://urn.fi/URN:NBN:fi:jyu-202401021029 |
op_rights |
CC BY 4.0 © 2023 The Authors openAccess https://creativecommons.org/licenses/by/4.0/ |
_version_ |
1796939063530356736 |