Reticulate and Hybrid Speciation is Promoted by Environmental Instability in an Indo-Pacific Species Complex of Whistlers (Aves: Pachycephala).

ABSTRACT: Genomic studies have revealed introgressive hybridisation as a common phenomenon across the tree of life, particularly among young radiations. As incipient speciation tends to be induced by vicariance events, it is assumed that introgressive hybridisation is more frequent in young radiations in which allopatrically distributed species have a high probability of coming into secondary contact. In this study, we use whole genomic data to investigate spatio-temporal introgression patterns in a songbird radiation that has colonised a highly dynamic island region in the Indo-Pacific. Some taxa within this radiation have colonised remote oceanic islands whereas others occur on landmasses and islands in the Sahul region that were periodically connected during Pleistocene periods of lower sea level

SUBMITTER: Irestedt M 

PROVIDER: S-EPMC12573736 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature