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7 results for “Atlapetes”
Phylogeography of the tepui brush finch, Atlapetes personatus (Passeriformes: Passerellidae): Extensive differentiation on the sky islands of the Venezuelan Pantepui
<p>The biogeography and genetic structure of species endemic to the high elevation sky islands (tepuis) of the Guiana Shield in eastern and southern Venezuela and adjacent areas of Brazil and Guyana are poorly known. We investigated the phylogeography and population structure of the tepui brush finch (<em>Atlapetes personatus</em>) as an exemplar of that biota. Mitochondrial DNA sequences revealed three monophyletic clades that correspond to major morphological subspecies groups occurring in eastern, southern, and northwestern regions of the Pantepui. Differentiation among the clades accounted for 95% of the total genetic variance. DNA sequences from three nuclear loci also showed marked divergence among those three regions. Estimates of gene flow between regions and sampled populations were all less than one individual per generation. Consequently, these subspecies groups ought to be recognized as species-level taxa. The results suggest there is more large-scale biogeographic structure within the Pantepui region than generally recognized. Additionally, within two of the three regions, genetic variance among tepuis was substantial at both mitochondrial and nuclear loci. Many of the sampled populations appear to be genetically independent units that are nearly cryptic morphologically. The sampled tepuis may be islands of habitat for this taxon and for conservation purposes.</p>
Phylogeography of the tepui brush finch, Atlapetes personatus (Passeriformes: Passerellidae): Extensive differentiation on the sky islands of the Venezuelan Pantepui
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Data from: Potential distribution and landscape connectivity of the Antioquia Brushfinch (<em>Atlapetes blancae</em>): Implications for its conservation
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Figure 3 from: Rocha-Méndez A, Sánchez-González LA, Arbeláez-Cortés E, Navarro-Sigüenza AG (2018) Phylogeography indicates incomplete genetic divergence among phenotypically differentiated montane forest populations of Atlapetes albinucha (Aves, Passerellidae). ZooKeys 809: 125-148. https://doi.org/10.3897/zookeys.809.28743
Figure 3 Bayesian skyline plot derived from the concatenated gene dataset of Atlapetesalbinucha species. Time in millions of years. Population size change (Ne*generation time) in the Y axis. Mean estimate is shown as a thick solid line, and the 95% HDP limits are shown in solid purple color area surrounding the mean estimate.
Figure 4 from: Rocha-Méndez A, Sánchez-González LA, Arbeláez-Cortés E, Navarro-Sigüenza AG (2018) Phylogeography indicates incomplete genetic divergence among phenotypically differentiated montane forest populations of Atlapetes albinucha (Aves, Passerellidae). ZooKeys 809: 125-148. https://doi.org/10.3897/zookeys.809.28743
Figure 4 Maxent ENMs for A.albinucha species projected into present and past scenarios. Darker blue areas depict higher logistic prediction values. ENM projected in the a present b the Mid-Holocene Climatic Optimum (MH) c the Last Glacial Maximum (LGM) and d the Last Interglacial (LIG).
Figure 1 from: Rocha-Méndez A, Sánchez-González LA, Arbeláez-Cortés E, Navarro-Sigüenza AG (2018) Phylogeography indicates incomplete genetic divergence among phenotypically differentiated montane forest populations of Atlapetes albinucha (Aves, Passerellidae). ZooKeys 809: 125-148. https://doi.org/10.3897/zookeys.809.28743
Figure 1 Atlapetesalbinucha distribution shown in green stapled lines, based on Sánchez-González et al. (2015) and Natureserve (http://natureserve.org). Blue dots depict tissue samples used in the present study. Red dots depict records of the species used to construct the distribution model. Bird pictures depict the geographic regions where color morphs are found. Blue line depicts the location of the putative distribution barrier of the morphs in Chiapas.
Figure 2 from: Rocha-Méndez A, Sánchez-González LA, Arbeláez-Cortés E, Navarro-Sigüenza AG (2018) Phylogeography indicates incomplete genetic divergence among phenotypically differentiated montane forest populations of Atlapetes albinucha (Aves, Passerellidae). ZooKeys 809: 125-148. https://doi.org/10.3897/zookeys.809.28743
Figure 2 A Dated Bayesian maximum clade credibility tree showing phylogenetic relationships among members of Atlapetesalbinucha species. Node bars depict 95% HDP interval, scale bar represents millions of years. Nodal values above branches indicate posterior probabilities/ bootstrap supports of BI/ML. Capital letters depict haplotypes. An asterisk (*) indicate birds representing yellow morphs B Median-joining haplotype network for the concatenated dataset. Each color depicts the geographic provenance of samples: green-northern Chiapas (subspecies albinucha), red-southern Chiapas (subspeciesgriseipectus), blue-El Salvador (subspecies griseipectus), yellow-Honduras (subspecies fuscipygius) and light blue-Colombia (subspecies gutturalis). Each branch represents a single nucleotide change, transversal black lines along branches depict the occurrence of three mutations. Gray dots indicate median vectors inferred for the data.
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OpenNeuro
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