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Monitoring genome-w...
Monitoring genome-wide diversity over contemporary time with new indicators applied to Arctic charr populations
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- Saha, Atal (författare)
- Stockholms universitet,Avdelningen för populationsgenetik,University of Agder, Norway
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- Kurland, Sara, 1989- (författare)
- Stockholms universitet,Avdelningen för populationsgenetik
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- Kutschera, Verena E. (författare)
- Stockholms universitet,Institutionen för biokemi och biofysik,Science for Life Laboratory (SciLifeLab)
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- Díez-del-Molino, David (författare)
- Stockholms universitet,Avdelningen för populationsgenetik,Swedish Museum of Natural History, Sweden
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- Ekman, Diana (författare)
- Stockholms universitet,Institutionen för biokemi och biofysik,Science for Life Laboratory (SciLifeLab)
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- Ryman, Nils, 1943- (författare)
- Stockholms universitet,Avdelningen för populationsgenetik
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- Laikre, Linda, 1960- (författare)
- Stockholms universitet,Avdelningen för populationsgenetik
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(creator_code:org_t)
- 2024
- 2024
- Engelska.
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Ingår i: Conservation Genetics. - 1566-0621 .- 1572-9737. ; 25, s. 513-531
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Genetic diversity is fundamental to the adaptive potential and survival of species. Although its importance has long been recognized in science, it has a history of neglect within policy, until now. The new Global Biodiversity Framework recently adopted by the Convention on Biological Diversity, states that genetic diversity must be maintained at levels assuring adaptive potential of populations, and includes metrics for systematic monitoring of genetic diversity in so called indicators. Similarly, indicators for genetic diversity are being developed at national levels. Here, we apply new indicators for Swedish national use to one of the northernmost salmonid fishes, the Arctic charr (Salvelinus alpinus). We sequence whole genomes to monitor genetic diversity over four decades in three landlocked populations inhabiting protected alpine lakes in central Sweden. We find levels of genetic diversity, inbreeding and load to differ among lakes but remain stable over time. Effective population sizes are generally small (< 500), suggesting a limited ability to maintain adaptive variability if genetic exchange with nearby populations became eliminated. We identify genomic regions potentially shaped by selection; SNPs exhibiting population divergence exceeding expectations under drift and a putative selective sweep acting within one lake to which the competitive brown trout (Salmo trutta) was introduced during the sampling period. Identified genes appear involved in immunity and salinity tolerance. Present results suggest that genetically vulnerable populations of Arctic charr have maintained neutral and putatively adaptive genetic diversity despite small effective sizes, attesting the importance of continued protection and assurance of gene flow among populations.
Ämnesord
- NATURVETENSKAP -- Biologi -- Zoologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Genetik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Genetics (hsv//eng)
Nyckelord
- Adaptive potential
- Genetic monitoring
- CBD
- WGS
- Genetic indicators
- EBVs
- Salmonid
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
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Saha, Atal
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Kurland, Sara, 1 ...
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Kutschera, Veren ...
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Díez-del-Molino, ...
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Ekman, Diana
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Ryman, Nils, 194 ...
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visa fler...
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Laikre, Linda, 1 ...
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Biologi
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och Zoologi
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- NATURVETENSKAP
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NATURVETENSKAP
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och Biologi
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och Genetik
- Artiklar i publikationen
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Conservation Gen ...
- Av lärosätet
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Stockholms universitet