Data from: Stocking activities for the Arctic charr in Lake Geneva: genetic effects in space and time
Artificial stocking practices are widely used by resource managers worldwide, in order to sustain fish populations exploited by both recreational and commercial activities, but their benefits are controversial. Former practices involved exotic strains, although current programs rather consider artif...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:97609 2023-07-02T03:30:55+02:00 Data from: Stocking activities for the Arctic charr in Lake Geneva: genetic effects in space and time Savary, Romain Dufresnes, Christophe Champigneulle, Alexis Caudron, Arnaud Dubey, Sylvain Perrin, Nicolas Fumagalli, Luca 2017-06-13T19:44:51.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-mr-c319 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:97609 unknown doi:10.5061/dryad.f776h/1 doi:10.1002/ece3.3073 http://nbn-resolving.org/urn:nbn:nl:ui:13-mr-c319 doi:10.5061/dryad.f776h https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:97609 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2017 ftdans https://doi.org/10.5061/dryad.f776h/110.1002/ece3.307310.5061/dryad.f776h 2023-06-13T13:24:39Z Artificial stocking practices are widely used by resource managers worldwide, in order to sustain fish populations exploited by both recreational and commercial activities, but their benefits are controversial. Former practices involved exotic strains, although current programs rather consider artificial breeding of local fishes (supportive breeding). Understanding the complex genetic effects of these management strategies is an important challenge with economic and conservation implications, especially in the context of population declines. In the present study, we focus on the declining Arctic charr (Salvelinus alpinus) population from Lake Geneva (Switzerland and France), which has initially been restocked with allochtonous fishes in the early eighties, followed by supportive breeding. In this context, we conducted a genetic survey to document the evolution of the genetic diversity and structure throughout the last 50 years, before and after the initiation of hatchery supplementation, using contemporary and historical samples. We show that the introduction of exotic fishes was associated with a genetic bottleneck in the 1980-1990s, a break of Hardy-Weinberg Equilibrium (HWE), a reduction of genetic diversity, an increase of genetic structure among spawning sites, and a change in their genetic composition. Together with better environmental conditions, three decades of subsequent supportive breeding using local fishes allowed to re-establish HWE and the initial levels of genetic variation. However, current spawning sites have not fully recovered their original genetic composition and were extensively homogenized across the lake. Our study demonstrates the drastic genetic consequences of different restocking tactics in a comprehensive spatio-temporal framework, and suggests that genetic alteration by non-local stocking may be partly reversible through supportive breeding. We recommend that conservation-based programs consider local diversity and implement adequate protocols to limit the genetic homogenization ... Other/Unknown Material Arctic charr Arctic Salvelinus alpinus Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Arctic |
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Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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language |
unknown |
topic |
Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Savary, Romain Dufresnes, Christophe Champigneulle, Alexis Caudron, Arnaud Dubey, Sylvain Perrin, Nicolas Fumagalli, Luca Data from: Stocking activities for the Arctic charr in Lake Geneva: genetic effects in space and time |
topic_facet |
Life sciences medicine and health care |
description |
Artificial stocking practices are widely used by resource managers worldwide, in order to sustain fish populations exploited by both recreational and commercial activities, but their benefits are controversial. Former practices involved exotic strains, although current programs rather consider artificial breeding of local fishes (supportive breeding). Understanding the complex genetic effects of these management strategies is an important challenge with economic and conservation implications, especially in the context of population declines. In the present study, we focus on the declining Arctic charr (Salvelinus alpinus) population from Lake Geneva (Switzerland and France), which has initially been restocked with allochtonous fishes in the early eighties, followed by supportive breeding. In this context, we conducted a genetic survey to document the evolution of the genetic diversity and structure throughout the last 50 years, before and after the initiation of hatchery supplementation, using contemporary and historical samples. We show that the introduction of exotic fishes was associated with a genetic bottleneck in the 1980-1990s, a break of Hardy-Weinberg Equilibrium (HWE), a reduction of genetic diversity, an increase of genetic structure among spawning sites, and a change in their genetic composition. Together with better environmental conditions, three decades of subsequent supportive breeding using local fishes allowed to re-establish HWE and the initial levels of genetic variation. However, current spawning sites have not fully recovered their original genetic composition and were extensively homogenized across the lake. Our study demonstrates the drastic genetic consequences of different restocking tactics in a comprehensive spatio-temporal framework, and suggests that genetic alteration by non-local stocking may be partly reversible through supportive breeding. We recommend that conservation-based programs consider local diversity and implement adequate protocols to limit the genetic homogenization ... |
author |
Savary, Romain Dufresnes, Christophe Champigneulle, Alexis Caudron, Arnaud Dubey, Sylvain Perrin, Nicolas Fumagalli, Luca |
author_facet |
Savary, Romain Dufresnes, Christophe Champigneulle, Alexis Caudron, Arnaud Dubey, Sylvain Perrin, Nicolas Fumagalli, Luca |
author_sort |
Savary, Romain |
title |
Data from: Stocking activities for the Arctic charr in Lake Geneva: genetic effects in space and time |
title_short |
Data from: Stocking activities for the Arctic charr in Lake Geneva: genetic effects in space and time |
title_full |
Data from: Stocking activities for the Arctic charr in Lake Geneva: genetic effects in space and time |
title_fullStr |
Data from: Stocking activities for the Arctic charr in Lake Geneva: genetic effects in space and time |
title_full_unstemmed |
Data from: Stocking activities for the Arctic charr in Lake Geneva: genetic effects in space and time |
title_sort |
data from: stocking activities for the arctic charr in lake geneva: genetic effects in space and time |
publishDate |
2017 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-mr-c319 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:97609 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_relation |
doi:10.5061/dryad.f776h/1 doi:10.1002/ece3.3073 http://nbn-resolving.org/urn:nbn:nl:ui:13-mr-c319 doi:10.5061/dryad.f776h https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:97609 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.f776h/110.1002/ece3.307310.5061/dryad.f776h |
_version_ |
1770275194942783488 |