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Genotyping-by-Sequencing (GBS) of large amphibian genomes: a comparative study of two non-model species endemic to Italy

In: Animal Biology
Authors:
Valentina RovelliDepartment of Evolutionary and Environmental Biology, Faculty of Natural Sciences, Institute of Evolution, University of Haifa, Haifa, Israel
Department of Science, Roma Tre University, Viale Marconi 446, 00146 Rome, Italy

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Aritz Ruiz-GonzálezDepartment of Zoology and Animal Cell Biology, University of the Basque Country UPV/EHU, C/Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
Systematics, Biogeography and Population Dynamics Research Group, Lascaray Research Center, University of the Basque Country (UPV/EHU), Avda. Miguel de Unamuno, 3, 01006, Vitoria-Gasteiz, Spain
Conservation Genetics Laboratory, National Institute for Environmental Protection and Research (ISPRA), Via Cà Fornacetta 9, 40064, Ozzano dell’Emilia, Bologna, Italy

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Leonardo VignoliDepartment of Science, Roma Tre University, Viale Marconi 446, 00146 Rome, Italy

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Daniele MacaleFondazione Bioparco di Roma, Viale del Giardino Zoologico 20, 00197 Rome, Italy

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Vincenzo BuonoDepartment of Science, Roma Tre University, Viale Marconi 446, 00146 Rome, Italy

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Francesca DavoliConservation Genetics Laboratory, National Institute for Environmental Protection and Research (ISPRA), Via Cà Fornacetta 9, 40064, Ozzano dell’Emilia, Bologna, Italy

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David R. VieitesMuseo Nacional de Ciencias Naturales – Consejo Superior de Investigaciones Científicas (CSIC), C/José Gutiérrez Abascal 2, 28006, Madrid, Spain

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Nadav PezaroDepartment of Evolutionary and Environmental Biology, Faculty of Natural Sciences, Institute of Evolution, University of Haifa, Haifa, Israel

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Ettore RandiConservation Genetics Laboratory, National Institute for Environmental Protection and Research (ISPRA), Via Cà Fornacetta 9, 40064, Ozzano dell’Emilia, Bologna, Italy
Department 18/Section of Environmental Engineering, Aalborg University, Sohngårdsholmsvej 57, 9000, Aalborg, Denmark

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Abstract

Next Generation Sequencing (NGS) and related technologies have revolutionized the field of conservation and population genetics, providing novel tools and the capacity to discover thousands of new Single Nucleotide Polymorphisms (SNPs) for the analysis of population parameters. However, gathering NGS data for organisms with very large genomes, such as amphibians, remains challenging because it is still unclear how the current methods perform. Here, we use the Genotyping-by-Sequencing (GBS) approach to generate SNP data for the genotyping of two amphibian species that are of conservation concern, the Sardinian brook salamander (Euproctus platycephalus) and the Italian stream frog (Rana italica). Both E. platycephalus and R. italica have very large genomes (5.53 Gb and >20 Gb, respectively) so genomic data are not available for either of them. We used 95 individual samples and one Illumina lane for each species, with an additional lane for E. platycephalus. After filtering, we obtained 961 and 854 high-coverage SNPs for E. platycephalus and R. italica, respectively. Our results suggest that GBS can serve as a reliable and cost-effective method for genotyping large amphibian genomes, including non-model species.

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