Agricultural intensification alters marbled newt genetic diversity and gene flow through density and dispersal reduction
| العنوان: | Agricultural intensification alters marbled newt genetic diversity and gene flow through density and dispersal reduction |
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| المؤلفون: | Raphaël Leblois, Pierre Grillet, Olivier Lourdais, Alexandre Boissinot, Bertrand Gauffre, Vincent Quiquempois, Sophie Morin, Damien Picard, Cécile Ribout |
| المساهمون: | School of Biological Sciences [Clayton], Monash University [Clayton], Unité de recherche Plantes et Systèmes de Culture Horticoles (PSH), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC), Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Réserve Naturelle Régionale du Bocage des Antonins [France], Office français de la biodiversité (OFB), Département de Biologie UFR Sciences - Université d'Angers [France], Université d'Angers (UA), Centre d’Etudes Biologiques de Chizé (CEBC), UMR 7372 CNRS - La Rochelle Université, France, 79360, Villiers-en-Bois, France |
| المصدر: | Molecular Ecology Molecular Ecology, Wiley, 2022, ⟨10.1111/mec.16236⟩ Molecular Ecology, Wiley, In press, ⟨10.1111/mec.16236⟩ |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | 0106 biological sciences, Gene Flow, Triturus marmoratus, [SDV]Life Sciences [q-bio], Population, Biology, 010603 evolutionary biology, 01 natural sciences, microsatellites, 03 medical and health sciences, demographic inferences, Effective population size, Genetics, Animals, education, dispersal, ComputingMilieux_MISCELLANEOUS, Ecology, Evolution, Behavior and Systematics, Ecosystem, 030304 developmental biology, 2. Zero hunger, 0303 health sciences, education.field_of_study, Genetic diversity, Ecology, Genetic Variation, landscape genetics, genetic diversity, 15. Life on land, Salamandridae, Habitat destruction, Genetics, Population, Genetic distance, Genetic structure, [SDE]Environmental Sciences, Biological dispersal, Arable land, Microsatellite Repeats |
| الوصف: | International audience; Recent agricultural intensification threatens global biodiversity with amphibians being one of the most impacted groups. Because of their biphasic life cycle, amphibians are particularly vulnerable to habitat loss and fragmentation that often result in small, isolated populations and loss of genetic diversity. Here, we studied how landscape heterogeneity affects genetic diversity, gene flow and demographic parameters in the marbled newt, Triturus marmoratus, over a hedgerow network landscape in Western France. While the northern part of the study area consists of preserved hedged farm-land, the southern part was more profoundly converted for intensive arable crops production after WWII. Based on 67 sampled ponds and 10 microsatellite loci, we characterized regional population genetic structure and evaluated the correlation between landscape variables and (i) local genetic diversity using mixed models and (ii) genetic distance using multiple regression methods and commonality analysis. We identified a single genetic population characterized by a spatially heterogeneous isolation- by- distance pattern. Pond density in the surrounding landscape positively affected local genetic diversity while arable crop land cover negatively affected gene flow and connectivity. We used demographic inferences to quantitatively assess dif-ferences in effective population density and dispersal between the contrasted land-scapes characterizing the northern and southern parts of the study area. Altogether, results suggest recent land conversion affected T. marmoratus through reduction in both effective population density and dispersal due to habitat loss and reduced connectivity. |
| تدمد: | 1365-294X 0962-1083 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83f4dfd10b479594f693bcb2bd9bdf91Test https://pubmed.ncbi.nlm.nih.gov/34674328Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....83f4dfd10b479594f693bcb2bd9bdf91 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1365294X 09621083 |
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