Genomic diversity and demographic history of the<i> Dromiciops</i> genus (Marsupialia: Microbiotheriidae)

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dc.contributor.authorQuintero-Galvis, Julian F.
dc.contributor.authorSaenz-Agudelo, Pablo
dc.contributor.authorAmico, Guillermo C.
dc.contributor.authorVazquez, Soledad
dc.contributor.authorShafer, Aaron B. A.
dc.contributor.authorNespolo, Roberto F.
dc.date.accessioned2025-01-20T21:08:04Z
dc.date.available2025-01-20T21:08:04Z
dc.date.issued2022
dc.description.abstractThree 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 sys-tematics of the genus and have profound conservation consequences for the new species, especially considering the fragmentation level of the temperate rainforest.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.ympev.2022.107405
dc.identifier.eissn1095-9513
dc.identifier.issn1055-7903
dc.identifier.urihttps://doi.org/10.1016/j.ympev.2022.107405
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93454
dc.identifier.wosidWOS:000791689200001
dc.language.isoen
dc.revistaMolecular phylogenetics and evolution
dc.rightsacceso restringido
dc.subjectMicrobiotheria
dc.subjectDromiciops bozinovici
dc.subjectDromiciops gliroides
dc.subjectPleistocene
dc.subjectGlaciation
dc.subjectRADseq
dc.subjectPopulation genomics
dc.titleGenomic diversity and demographic history of the<i> Dromiciops</i> genus (Marsupialia: Microbiotheriidae)
dc.typeartículo
dc.volumen168
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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