Unexpected low genetic variation in the South American hystricognath rodent Lagostomus maximus (Rodentia: Chinchillidae)

Autoři: María Constanza Gariboldi aff001;  Pablo Ignacio Felipe Inserra aff001;  Sergio Lucero aff002;  Mauricio Failla aff004;  Sergio Iván Perez aff002;  Alfredo Daniel Vitullo aff001
Působiště autorů: Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico, Universidad Maimónides, Ciudad Autónoma de Buenos Aires, Argentina aff001;  Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Autónoma de Buenos Aires, Argentina aff002;  División de Mastozoología, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Ciudad Autónoma de Buenos Aires, Argentina aff003;  Proyecto Patagonia Noreste, Río Negro, Argentina aff004;  División Antropología, Facultad de Ciencias Naturales y Museo, Universidad Nacional de la Plata, Buenos Aires, Argentina aff005
Vyšlo v časopise: PLoS ONE 14(9)
Kategorie: Research Article
doi: 10.1371/journal.pone.0221559


The South American plains vizcacha, Lagostomus maximus inhabits primarily the Pampean and adjoining Espinal, Monte and Chaquenean regions of Argentina. In order to study the population genetic structure of L. maximus, a fragment of 560 bp of the mitochondrial DNA hypervariable region 1from 90 individuals collected from the 3 subspecies and 8 groups along Argentina was amplified and analyzed. We found 9 haplotypes. The haplotype network did not show an apparent phylogeographical signal. Although low levels of genetic variation were found in all the subspecies and groups analyzed, a radiation of L. maximus would have occurred from the North and Center of the Pampean region toward the rest of its geographic range in Argentina. Low levels of genetic diversity, the existence of a single genetically distinct population in Argentina and changes of its effective size indicate that metapopulation processes and changes in human population dynamics during the late-Holocene were important factors shaping the population genetic structure of L. maximus in Argentina.

Klíčová slova:

Biology and life sciences – Evolutionary biology – Genetic polymorphism – Genetics – Population genetics – Phylogeography – Heredity – Genetic mapping – Haplotypes – DNA – Conservation genetics – Population biology – Population metrics – Population size – Biogeography – Biochemistry – Nucleic acids – Forms of DNA – Mitochondrial DNA – Conservation biology – Ecology and environmental sciences – Conservation science – Earth sciences – Geography – People and places – Geographical locations – South America – Argentina


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