Population genomics of the island thrush elucidates one of earth’s great archipelagic radiations DOI Creative Commons
Andrew Hart Reeve, Graham Gower, J. M. Pujolar

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2022, Volume and Issue: unknown

Published: April 22, 2022

ABSTRACT Tropical islands are renowned as natural laboratories for evolutionary study. Lineage radiations across tropical archipelagos ideal systems investigating how colonization, speciation, and extinction processes shape biodiversity patterns. The expansion of the island thrush Indo-Pacific represents one largest yet most perplexing any songbird species. exhibits a complex mosaic pronounced plumage variation its range, is arguably world’s polytypic bird. It sedentary species largely restricted to mountain forests, it has colonized vast region spanning quarter globe. We conducted comprehensive sampling populations obtained genome-wide SNP data, which we used reconstruct phylogeny, population structure, gene flow, demographic history. evolved from migratory Palearctic ancestors radiated explosively during Pleistocene, with numerous instances flow between populations. Its bewildering masks biogeographically intuitive stepping stone colonization path Philippines through Greater Sundas, Wallacea New Guinea Polynesia. thrush’s success in colonizing mountains can be understood light ancestral mobility adaptation cool climates; however, shifts elevational degree apparent dispersal rates eastern part range raise further intriguing questions about biology.

Language: Английский

Population genomics of the island thrush elucidates one of earth’s great archipelagic radiations DOI Creative Commons
Andrew Hart Reeve, Graham Gower, J. M. Pujolar

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2022, Volume and Issue: unknown

Published: April 22, 2022

ABSTRACT Tropical islands are renowned as natural laboratories for evolutionary study. Lineage radiations across tropical archipelagos ideal systems investigating how colonization, speciation, and extinction processes shape biodiversity patterns. The expansion of the island thrush Indo-Pacific represents one largest yet most perplexing any songbird species. exhibits a complex mosaic pronounced plumage variation its range, is arguably world’s polytypic bird. It sedentary species largely restricted to mountain forests, it has colonized vast region spanning quarter globe. We conducted comprehensive sampling populations obtained genome-wide SNP data, which we used reconstruct phylogeny, population structure, gene flow, demographic history. evolved from migratory Palearctic ancestors radiated explosively during Pleistocene, with numerous instances flow between populations. Its bewildering masks biogeographically intuitive stepping stone colonization path Philippines through Greater Sundas, Wallacea New Guinea Polynesia. thrush’s success in colonizing mountains can be understood light ancestral mobility adaptation cool climates; however, shifts elevational degree apparent dispersal rates eastern part range raise further intriguing questions about biology.

Language: Английский

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