Assessing spatial mating patterns in translocated populations of Campanula glomerata
Plant translocations represent a solution for rescuing nonviable populations and recreating population networks. An essential criterion for translocation success is genetic diversity enhancement or maintenance in post-translocation generations. Genetic mixing, i.e. individual relatedness and spatial...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-10-01
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| Series: | Global Ecology and Conservation |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S235198942300183X |
| _version_ | 1797676266130767872 |
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| author | Fabienne Van Rossum Sarah Le Pajolec Cécile Godé |
| author_facet | Fabienne Van Rossum Sarah Le Pajolec Cécile Godé |
| author_sort | Fabienne Van Rossum |
| collection | DOAJ |
| description | Plant translocations represent a solution for rescuing nonviable populations and recreating population networks. An essential criterion for translocation success is genetic diversity enhancement or maintenance in post-translocation generations. Genetic mixing, i.e. individual relatedness and spatial structure, also needs to be considered. We investigated the processes involved in the spatial patterns of genetic diversity in the first post-translocation generation (recruits and seed progeny) of translocated populations of the insect-pollinated, self-incompatible herb Campanula glomerata. We combined direct and indirect estimates of contemporary mating and gene dispersal using 15 microsatellite loci to estimate clonal extent, and genetic diversity and structure, to reconstruct sibship and parentage and to estimate pollen and seed dispersal distances. Genetic diversity in the first post-translocation generation is representative of the natural seed-source populations. Combining sources enhanced the effective number of breeders (Ne = 102–175). Clonal propagation was only marginal. Pollen and seed dispersal occurred at short distances within populations (up to 18 m), favouring fine-scale spatial genetic structure (SGS). This means that the enhanced genetic diversity, random mating and high admixture levels are ascribed to the mixed spatial arrangement of transplants. Stronger SGS might lead to biparental inbreeding and reduced seed set due to a lack of compatible neighbours, and impact the long-term population genetic sustainability. Increasing seed-dispersal distances within and among sites might be mediated by grazing livestock used for grassland management. Some long-distance pollen flow events (0.68–2.35 km) between populations were also detected, suggesting the potential of creating large translocated populations to restore connectivity by gene flow. |
| first_indexed | 2024-03-11T22:26:29Z |
| format | Article |
| id | doaj.art-0f7566993308448b8b7e1ea81f054596 |
| institution | Directory Open Access Journal |
| issn | 2351-9894 |
| language | English |
| last_indexed | 2024-03-11T22:26:29Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Global Ecology and Conservation |
| spelling | doaj.art-0f7566993308448b8b7e1ea81f0545962023-09-24T05:15:17ZengElsevierGlobal Ecology and Conservation2351-98942023-10-0146e02548Assessing spatial mating patterns in translocated populations of Campanula glomerataFabienne Van Rossum0Sarah Le Pajolec1Cécile Godé2Meise Botanic Garden, Nieuwelaan 38, 1860 Meise, Belgium; Service général de l'Enseignement supérieur et de la Recherche scientifique, Fédération Wallonie-Bruxelles, rue A. Lavallée 1, 1080 Brussels, Belgium; Corresponding author at: Meise Botanic Garden, Nieuwelaan 38, 1860 Meise, Belgium.Meise Botanic Garden, Nieuwelaan 38, 1860 Meise, BelgiumUniv. Lille, CNRS, UMR 8198 - Evo-Eco-Paleo, F-59000 Lille, FrancePlant translocations represent a solution for rescuing nonviable populations and recreating population networks. An essential criterion for translocation success is genetic diversity enhancement or maintenance in post-translocation generations. Genetic mixing, i.e. individual relatedness and spatial structure, also needs to be considered. We investigated the processes involved in the spatial patterns of genetic diversity in the first post-translocation generation (recruits and seed progeny) of translocated populations of the insect-pollinated, self-incompatible herb Campanula glomerata. We combined direct and indirect estimates of contemporary mating and gene dispersal using 15 microsatellite loci to estimate clonal extent, and genetic diversity and structure, to reconstruct sibship and parentage and to estimate pollen and seed dispersal distances. Genetic diversity in the first post-translocation generation is representative of the natural seed-source populations. Combining sources enhanced the effective number of breeders (Ne = 102–175). Clonal propagation was only marginal. Pollen and seed dispersal occurred at short distances within populations (up to 18 m), favouring fine-scale spatial genetic structure (SGS). This means that the enhanced genetic diversity, random mating and high admixture levels are ascribed to the mixed spatial arrangement of transplants. Stronger SGS might lead to biparental inbreeding and reduced seed set due to a lack of compatible neighbours, and impact the long-term population genetic sustainability. Increasing seed-dispersal distances within and among sites might be mediated by grazing livestock used for grassland management. Some long-distance pollen flow events (0.68–2.35 km) between populations were also detected, suggesting the potential of creating large translocated populations to restore connectivity by gene flow.http://www.sciencedirect.com/science/article/pii/S235198942300183XEffective population sizePaternity analysesPlant reintroductionSeed-source mixingSibship assignmentSpatial autocorrelation analysis |
| spellingShingle | Fabienne Van Rossum Sarah Le Pajolec Cécile Godé Assessing spatial mating patterns in translocated populations of Campanula glomerata Global Ecology and Conservation Effective population size Paternity analyses Plant reintroduction Seed-source mixing Sibship assignment Spatial autocorrelation analysis |
| title | Assessing spatial mating patterns in translocated populations of Campanula glomerata |
| title_full | Assessing spatial mating patterns in translocated populations of Campanula glomerata |
| title_fullStr | Assessing spatial mating patterns in translocated populations of Campanula glomerata |
| title_full_unstemmed | Assessing spatial mating patterns in translocated populations of Campanula glomerata |
| title_short | Assessing spatial mating patterns in translocated populations of Campanula glomerata |
| title_sort | assessing spatial mating patterns in translocated populations of campanula glomerata |
| topic | Effective population size Paternity analyses Plant reintroduction Seed-source mixing Sibship assignment Spatial autocorrelation analysis |
| url | http://www.sciencedirect.com/science/article/pii/S235198942300183X |
| work_keys_str_mv | AT fabiennevanrossum assessingspatialmatingpatternsintranslocatedpopulationsofcampanulaglomerata AT sarahlepajolec assessingspatialmatingpatternsintranslocatedpopulationsofcampanulaglomerata AT cecilegode assessingspatialmatingpatternsintranslocatedpopulationsofcampanulaglomerata |