BECAS
OBREGÓN Graciela Del Carmen
artículos
Título:
First assessment of genetic diversity, population structure and historical population dynamics of Myocastor coypus (Rodentia: Echimyidae) in the centre of its native range
Autor/es:
IBAÑEZ E.A; PERALTA D.M; OBREGÓN G.; NARDELLI M.; TÚNEZ J.I.
Revista:
BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2021
ISSN:
0024-4066
Resumen:
Myocastor coypus is a rodent native to South America that is strongly linked to river systems. In their native distribution range, past studies were mainly aimed at its ecology and parasitology but genetic studies were very limited. Here, we used sequences of the mitochondrial D-loop control region to study the genetic diversity, population genetic structure and some aspects of historical population dynamics of coypu in the centre of its native range. Our results showed moderate to high levels of genetic diversity and a lack of genetic structure in the study area. Bayesian analysis of population structure (BAPS) showed the existence of two haplogroups distributed in most sampling sites. These results suggest the movement of coypu is independent of the structure of current known river networks and its dispersal patterns are related to flooding events and the presence of lagoons connecting river basins. The demographic expansion patterns in this coypu population and other populations of South American mammals during the Late Pleistocene support the hypothesis that demographical changes in wild populations are relative to fluctuations in climate and ecology.
