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A decision-making framework to maximise the evolutionary potential of populations - Genetic and genomic insights from the common midwife toad (Alytes obstetricans) at its range limits

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Titel: A decision-making framework to maximise the evolutionary potential of populations - Genetic and genomic insights from the common midwife toad (Alytes obstetricans) at its range limits
Autoren: Christopher D. Barratt, Kathleen Preißler, Pauline R. Jennert, Falk Eckhardt, Mirjam Nadjafzadeh, Sebastian Steinfartz
Quelle: Heredity (Edinb)
Heredity vol. 2024
Verlagsinformationen: Springer Science and Business Media LLC, 2024.
Publikationsjahr: 2024
Schlagwörter: Conservation of Natural Resources, Conservation biology, Population genetics, Climate Change, Decision Making, Genetic Variation, Genomics, Bufonidae/genetics [MeSH], 631/208/457, Europe [MeSH], Climate Change [MeSH], Polymorphism, Single Nucleotide [MeSH], Adaptation, Physiological/genetics [MeSH], Genetics, Population [MeSH], Genomics/methods [MeSH], Animals [MeSH], Biological Evolution [MeSH], Article, 631/158/2452, 45/77, 45/23, Microsatellite Repeats/genetics [MeSH], Conservation of Natural Resources [MeSH], Anura/genetics [MeSH], 704/158/672, Bufonidae/classification [MeSH], Genetic Variation [MeSH], Decision Making [MeSH], article, Polymorphism, Single Nucleotide, Biological Evolution, Adaptation, Physiological, Bufonidae, Europe, Genetics, Population, Life Science, Animals, Molecular ecology, Anura, Microsatellite Repeats
Beschreibung: Anthropogenic habitat modification and climate change are fundamental drivers of biodiversity declines, reducing the evolutionary potential of species, particularly at their distributional limits. Supportive breeding or reintroductions of individuals are often made to replenish declining populations, sometimes informed by genetic analysis. However, most approaches utilised (i.e. single locus markers) do not have the resolution to account for local adaptation to environmental conditions, a crucial aspect to consider when selecting donor and recipient populations. Here, we incorporate genetic (microsatellite) and genome-wide SNP (ddRAD-seq) markers, accounting for both neutral and putative adaptive genetic diversity, to inform the conservation management of the threatened common midwife toad, Alytes obstetricans at the northern and eastern edges of its range in Europe. We find geographically structured populations (n = 4), weak genetic differentiation and fairly consistent levels of genetic diversity across localities (observed heterozygosity and allelic richness). Categorising individuals based on putatively adaptive regions of the genome showed that the majority of localities are not strongly locally adapted. However, several localities present high numbers of private alleles in tandem with local adaptation to warmer conditions and rough topography. Combining genetic diversity and local adaptations with estimates of migration rates, we develop a decision-making framework for selecting donor and recipient populations which maximises the geographic dispersal of neutral and putatively adaptive genetic diversity. Our framework is generally applicable to any species, but especially to amphibians, so armed with this information, conservationists may avoid the reintroduction of unsuitable/maladapted individuals to new sites and increase the evolutionary potential of populations within species.
Publikationsart: Article
Other literature type
Dateibeschreibung: application/pdf
Sprache: English
ISSN: 1365-2540
0018-067X
DOI: 10.1038/s41437-024-00710-4
Zugangs-URL: https://pubmed.ncbi.nlm.nih.gov/39223228
https://repository.publisso.de/resource/frl:6491744
https://research.wur.nl/en/publications/a-decision-making-framework-to-maximise-the-evolutionary-potentia
https://doi.org/10.1038/s41437-024-00710-4
https://repository.naturalis.nl/pub/800756
Rights: CC BY
Dokumentencode: edsair.doi.dedup.....efda2a6c8c4832c85b4a318f38bbdf72
Datenbank: OpenAIRE
Beschreibung
Abstract:Anthropogenic habitat modification and climate change are fundamental drivers of biodiversity declines, reducing the evolutionary potential of species, particularly at their distributional limits. Supportive breeding or reintroductions of individuals are often made to replenish declining populations, sometimes informed by genetic analysis. However, most approaches utilised (i.e. single locus markers) do not have the resolution to account for local adaptation to environmental conditions, a crucial aspect to consider when selecting donor and recipient populations. Here, we incorporate genetic (microsatellite) and genome-wide SNP (ddRAD-seq) markers, accounting for both neutral and putative adaptive genetic diversity, to inform the conservation management of the threatened common midwife toad, Alytes obstetricans at the northern and eastern edges of its range in Europe. We find geographically structured populations (n = 4), weak genetic differentiation and fairly consistent levels of genetic diversity across localities (observed heterozygosity and allelic richness). Categorising individuals based on putatively adaptive regions of the genome showed that the majority of localities are not strongly locally adapted. However, several localities present high numbers of private alleles in tandem with local adaptation to warmer conditions and rough topography. Combining genetic diversity and local adaptations with estimates of migration rates, we develop a decision-making framework for selecting donor and recipient populations which maximises the geographic dispersal of neutral and putatively adaptive genetic diversity. Our framework is generally applicable to any species, but especially to amphibians, so armed with this information, conservationists may avoid the reintroduction of unsuitable/maladapted individuals to new sites and increase the evolutionary potential of populations within species.
ISSN:13652540
0018067X
DOI:10.1038/s41437-024-00710-4