Artículo
Genomic diversity and demographic history of the Dromiciops genus (Marsupialia: Microbiotheriidae)
Quintero Galvis, Julian F.; Saenz Agudelo, Pablo; Amico, Guillermo Cesar
; Vazquez, Miriam Soledad
; Shafer, Aaron B. A.; Nespolo, Roberto F.
Fecha de publicación:
03/2022
Editorial:
Academic Press Inc Elsevier Science
Revista:
Molecular Phylogenetics and Evolution
ISSN:
1055-7903
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Three orders represent the South American fauna of marsupials. Of these, Microbiotheria was until recently known as a monotypic genus with the only surviving species Dromiciops gliroides (monito del monte). The recent proposal of a new Dromiciops species (Dromiciops bozinovici), together with new information on the origin and diversification of living microbioterians has changed the prevailing paradigm around the evolutionary history of these emblematic marsupials. Here, we used a RADseq approach to test for evidence of admixture and past or current gene flow among both species of Dromiciops and evaluate the genetic structure within D. gliroides. We analyzed 127 samples of Dromiciops distributed across the known distribution range of both species. We also inferred the joint demographic history of these lineages, thus corroborating the status of D. bozinovici as a distinct species. Demographic history reconstruction indicated that D. bozinovici diverged from D. gliroides around 4my ago and has remained isolated and demographically stable ever since. In contrast, D. gliroides is subdivided into three subclades that experienced recent expansions and moderate gene flow among them (mostly from north to south). Furthermore, genetic distances among populations within D. gliroides were significantly correlated with geographic distances. These results suggest that some of the D. gliroides populations would have survived in glacial refuges, with posterior expansions after ice retreat. Our results have important implications for the systematics of the genus and have profound conservation consequences for the new species, especially considering the fragmentation level of the temperate rainforest.
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Identificadores
Colecciones
Articulos(INIBIOMA)
Articulos de INST. DE INVEST.EN BIODIVERSIDAD Y MEDIOAMBIENTE
Articulos de INST. DE INVEST.EN BIODIVERSIDAD Y MEDIOAMBIENTE
Citación
Quintero Galvis, Julian F.; Saenz Agudelo, Pablo; Amico, Guillermo Cesar; Vazquez, Miriam Soledad; Shafer, Aaron B. A.; et al.; Genomic diversity and demographic history of the Dromiciops genus (Marsupialia: Microbiotheriidae); Academic Press Inc Elsevier Science; Molecular Phylogenetics and Evolution; 168; 3-2022; 1-12
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