Publications by authors named "G Delrio"
Article Synopsis
- The study investigates how understanding genome architecture can enhance insights into evolutionary history and population differentiation, particularly in species like the Amazonian antbird, Thamnophilus aethiops.
- Researchers found that different genealogical patterns are associated with chromosome size, with smaller chromosomes showing more gene flow, while larger chromosomes tend to reflect geographic isolation events.
- Using advanced genomic data and machine learning techniques, they constructed chromosome-level phylogenies that revealed distinct evolutionary patterns correlating with past geophysical events, such as the formation of the Madeira River Basin.
Large Amazonian rivers impede dispersal for many species, but lowland river networks frequently rearrange, thereby altering the location and effectiveness of river barriers through time. These rearrangements may promote biotic diversification by facilitating episodic allopatry and secondary contact among populations. We sequenced genome-wide markers to evaluate the histories of divergence and introgression in six Amazonian avian species complexes.
View Article and Find Full Text PDFSecondary contact between species often results in the formation of a hybrid zone, with the eventual fates of the hybridizing species dependent on evolutionary and ecological forces. We examine this process in the Amazon Basin by conducting the first genomic and phenotypic characterization of the hybrid zone formed after secondary contact between two obligate army-ant-followers: the White-breasted Antbird (Rhegmatorhina hoffmannsi) and the Harlequin Antbird (Rhegmatorhina berlepschi). We found a major geographic displacement (∼120 km) between the mitochondrial and nuclear clines, and we explore potential hypotheses for the displacement, including sampling error, genetic drift, and asymmetric cytonuclear incompatibilities.
View Article and Find Full Text PDFArticle Synopsis
- Scientists are studying bird genomes to learn more about their diversity and evolution, analyzing 363 bird genomes from nearly all bird families for a big project called Bird 10,000 Genomes (B10K).
- By using advanced methods, they can compare DNA more effectively, finding new patterns and understanding how different bird species are related.
- This research helps improve our understanding of how birds evolve and can also aid in protecting them in the future.