Evolutionary history of the Pectoral Sparrow Arremon taciturnus: evidence for diversification during the Late Pleistocene

We focus on reconstructing a spatiotemporal scenario of diversification of a widespread South American species, the Pectoral Sparrow Arremon taciturnus (Aves: Passerellidae). This species is widely distributed in both the humid and the dry forests of South America and therefore provides an interesti...

Full description

Saved in:
Bibliographic Details
Published in:Ibis (London, England) England), 2020-10, Vol.162 (4), p.1198-1210
Main Authors: Carneiro de Melo Moura, Carina, Fernandes, Alexandre M., Aleixo, Alexandre, Farias Pereira de Araújo, Helder, de Freitas Mariano, Erich, Wink, Michael
Format: Article
Language:English
Subjects:
Alleles
Allopatry
Amazonia
Arremon taciturnus
Atlantic Forest
biogeography
Cytochrome
Cytochrome b
Cytochromes
Divergence
Diversification
Dry forests
Fibrinogen
forest‐associated species
Gene frequency
Geographical locations
Mitochondria
NADH
Neotropics
Nicotinamide adenine dinucleotide
Nucleotides
Pectoral Sparrow
Pleistocene
Rivers
Speciation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We focus on reconstructing a spatiotemporal scenario of diversification of a widespread South American species, the Pectoral Sparrow Arremon taciturnus (Aves: Passerellidae). This species is widely distributed in both the humid and the dry forests of South America and therefore provides an interesting model for understanding the connection between different biomes of South America. We examined nucleotide sequences of the mitochondrial genes Cytochrome b (cyt‐b) and NADH subunit 2 (ND2) from 107 specimens, and one nuclear marker (intron 7 of the β‐fibrinogen gene) from a subset of samples collected across the distribution ranges of A. t. taciturnus and A. t. nigrirostris. Six major lineages were recovered in the phylogenies that displayed high levels of variance of allele frequencies and corresponded to distinct geographical locations. The estimation of divergence times provided evidence that diversification of the six lineages of the Pectoral Sparrow occurred throughout the Late Pleistocene across major cis‐Andean biomes and Amazonian interfluves. Our dataset for A. taciturnus provides further evidence that rivers in Amazonia constitute barriers promoting allopatric speciation, with occasional sharing of alleles among lineages, particularly those with adjacent distributions.
ISSN:0019-1019
1474-919X
DOI:10.1111/ibi.12813