Unravelling population processes over the Late Pleistocene driving contemporary genetic divergence in Palearctic buzzards

• Tipo: Artigo em Revista Científica Internacional
• Data: 2019

Autores

Jowers, MJ (Autor) Outra; Sanchez Ramirez, S (Autor) Outra; Lopes, S (Autor) Outra; Karyakin, I (Autor) Outra; Dombrovski, V (Autor) Outra; Qninba, A (Autor) Outra; Valkenburg, T (Autor) Outra; Onofre, N (Autor) Outra; ferrand, n (Autor) FCUP; Beja, P (Autor) Outra; Palma, L (Autor) Outra; godinho, r (Autor) FCUP

Revista

Título: Molecular Phylogenetics and Evolution

Vol. 134

Páginas: 269-281

ISSN: 1055-7903

Editora: Elsevier

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 7 Citações

Outras Informações

ID Authenticus: P-00Q-BM3

DOI: 10.1016/j.ympev.2019.02.004

Abstract (EN): Population range expansions and contractions as a response to climate and habitat change throughout the Quaternary are known to have contributed to complex phylogenetic and population genetic events. Speciation patterns and processes in Palearctic buzzards (genus Buteo) are a long-standing example of morphological and genetic data incongruence, attributed to panmixia, habitat range shifts, contact zones, and climate change. Here we assess the systematics, phylogeography and population genetic structure of three nominal species of Palearctic buzzards, Buteo buteo (including B. b. vulpinus), B. rufinus (including B. r. cirtensis) and B. hemilasius. Phylogenetic analyses inferred from mitochondrial data recover B. hemilasius as sister to the sister clades B. r. rufinus and B. buteo complex (B. b. buteo, B. b. vulpinus, but also including B. r. cirtensis). In contrast, we find an unresolved genetic delimitation inferred from four nuclear loci, suggesting an ancestral genetic pool for all species. Time-trees suggest population contractions and expansions throughout the Pleistocene, which likely reflect habitat change and contrasting ecological niche requirements between species. Microsatellite-based extended Bayesian skyline plots reveal relatively constant population sizes for B. hemilasius, B. r. rufinus, and B. b. vulpinus, in contrast to a dramatic population expansion in B. r. cirtensis within the last 3 kya. Overall, our study illustrates how complex population processes over the Late Pleistocene have shaped the patterns of genetic divergence in Palearctic buzzards, due to the joint effects of shared ancestral polymorphisms, population expansions and contractions, with hybridization at contact zones leading to admixture and introgression.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 13