Comparative landscape genetics of pond-breeding amphibians in Mediterranean temporal wetlands: The positive role of structural heterogeneity in promoting gene flow
| Autor: | Emilio Civantos, João Gonçalves, Jorge Gutiérrez-Rodríguez, Iñigo Martínez-Solano |
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| Přispěvatelé: | Ministerio de Economía y Competitividad (España), Fundação para a Ciência e a Tecnologia (Portugal), European Commission, Consejo Superior de Investigaciones Científicas (España), Programa Operacional do Potencial Humano (Portugal) |
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Mediterranean climate Gene Flow NDVI Population Urodela Land cover Population connectivity Conservation Biology 010603 evolutionary biology 01 natural sciences Shrubland 03 medical and health sciences Genetics Animals education Ponds Ecology Evolution Behavior and Systematics geography education.field_of_study geography.geographical_feature_category Models Statistical Resistance (ecology) Ecology Vegetation NDMI Gene flow Bufonidae 030104 developmental biology Genetics Population Habitat Spain Wetlands Threatened species Iberian Peninsula Microsatellite Repeats |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 1365-294X |
| Popis: | Comparative landscape genetics studies can provide key information to implement cost-effective conservation measures favouring a broad set of taxa. These studies are scarce, particularly in Mediterranean areas, which include diverse but threatened biological communities. Here, we focus on Mediterranean wetlands in central Iberia and perform a multi-level, comparative study of two endemic pond-breeding amphibians, a salamander (Pleurodeles waltl) and a toad (Pelobates cultripes). We genotyped 411 salamanders from 20 populations and 306 toads from 16 populations at 18 and 16 microsatellite loci, respectively, and identified major factors associated with population connectivity through the analysis of three sets of variables potentially affecting gene flow at increasingly finer levels of spatial resolution. Topographic, land use/cover, and remotely sensed vegetation/moisture indices were used to derive optimized resistance surfaces for the two species. We found contrasting patterns of genetic structure, with stronger, finer scale genetic differentiation in Pleurodeles waltl, and notable differences in the role of fine-scale patterns of heterogeneity in vegetation cover and water content in shaping patterns of regional genetic structure in the two species. Overall, our results suggest a positive role of structural heterogeneity in population connectivity in pond-breeding amphibians, with habitat patches of Mediterranean scrubland and open oak woodlands (“dehesas”) facilitating gene flow. Our study highlights the usefulness of remotely sensed continuous variables of land cover, vegetation and water content (e.g., NDVI, NDMI) in conservation-oriented studies aimed at identifying major drivers of population connectivity. Secretaria de Estado de Investigacion,Desarrollo e Innovacion, Grant/AwardNumber: CGL2011-28300; Consejo Superior de Investigaciones Cientificas of Spain (CSIC); European Social Fund (ESF); FCT, Grant/Award Number: SFRH/BD/90112/2012, SFRH/BPD/109182/2015; POPH-QREN; CSF; Spanish “Ramon y Cajal”, Grant/Award Number: RYC-2007-01668; Severo Ochoa, Grant/Award Number: SEV-2012-0262 |
| Databáze: | OpenAIRE |
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