Universität zu Köln

Boric-Bargetto, Dusan ORCID: 0000-0002-4568-8828, Zuniga-Reinoso, Alvaro, Inostroza-Michel, Oscar, Rodriguez-Serrano, Enrique, Gonzalez-Acuna, Daniel, Eduardo Palma, R. and Hernandez, Cristian E. (2021). A comprehensive overview of the genetic diversity in Thylamys elegans (Didelphimorphia: Didelphidae): establishing the phylogeographic determinants. Rev. Chil. Hist. Nat., 94 (1). SANTIAGO: SOC BIOLGIA CHILE. ISSN 0717-6317

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Abstract

Background For the genus Thylamys, the rivers have been reported as barriers to dispersal, limiting current and historical distribution of its lineages. We hypothesized that the Maipo river has affected the genetic structure of northern and southern lineages of Thylamys elegans, recovering a phylogenetic relationships with reciprocally monophyletic sister groups on opposite river banks. We evaluated the role of other rivers in the Mediterranean zone of Chile as historical and recent modulators of the biogeographic processes of this species. Methods We applied a phylogeographic approach, using the cytochrome-b mitochondrial gene for 93 individuals of T. elegans, from 37 localities in a latitudinal gradient between 21 degrees 25' and 3556'S, encompassing a geographic area between the Atacama Desert and most of the Mediterranean Chilean zone. Results The phylogenetics results recovered six lineages within T. elegans: Thylamys elegans elegans, Thylamys elegans coquimbensis, the Loa lineage and three other lineages not described previously (Aconcagua, South 1 and South 2). We suggest that following rivers play a role like primary barrier: the Maipo river in the genetic differentiation of northern and southern ancestral lineages, and the Mataquito river and its tributary Teno river for the South 1 and South 2 lineages. On the other hand, the Quilimari river preserve the genetic divergence in T. e. coquimbensis and Aconcagua lineage and the Aconcagua river in Aconcagua lineage and T. e. elegans acting like secondary barriers. Conclusions We concluded that the genetic diversity and biogeographic history of T. elegans was shaped by mountain glaciers, changes in river water levels during the Pleistocene glaciations and hyperaridity, promoting the differentiation and persistance of the T. elegans lineages.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Boric-Bargetto, Dusan UNSPECIFIED orcid.org/0000-0002-4568-8828 UNSPECIFIED Zuniga-Reinoso, Alvaro UNSPECIFIED UNSPECIFIED UNSPECIFIED Inostroza-Michel, Oscar UNSPECIFIED UNSPECIFIED UNSPECIFIED Rodriguez-Serrano, Enrique UNSPECIFIED UNSPECIFIED UNSPECIFIED Gonzalez-Acuna, Daniel UNSPECIFIED UNSPECIFIED UNSPECIFIED Eduardo Palma, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hernandez, Cristian E. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-590463
DOI:	10.1186/s40693-021-00103-5
Journal or Publication Title:	Rev. Chil. Hist. Nat.
Volume:	94
Number:	1
Date:	2021
Publisher:	SOC BIOLGIA CHILE
Place of Publication:	SANTIAGO
ISSN:	0717-6317
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language LIOLAEMUS-MONTICOLA; GENUS THYLAMYS; MOUSE OPOSSUMS; QUATERNARY GLACIATIONS; ATACAMA DESERT; IQ-TREE; DIVERSIFICATION; SYSTEMATICS; MAMMALS; ANDES Multiple languages Biodiversity Conservation; Ecology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/59046