Recent divergence and microgeographic genetic structure in an endangered Australian songbird: the southern black-throated finch DOI
Daniel M. Hooper, Kelsie A. Lopez,

Bronwyn G. Butcher

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown

Опубликована: Апрель 18, 2025

ABSTRACT Anthropogenic habitat loss and climate change threaten global biodiversity. Effective conservation management requires a detailed understanding of geographic structure, genetic diversity, demography threatened species. The black-throated finch, Poephila cincta , is an Australian songbird with two subspecies: atropygialis . southern subspecies, has experienced ∼80% range contraction over the last century listed as endangered but surveys it are incomplete. Here, we use combination reduced representation whole genome sequencing to examine differentiation, spatial demographic history in both forms this We find that genetically distinct despite divergence gene flow geographically isolated by biogeographic barrier known Einasleigh Uplands. Since they shared common ancestor ∼400,000 years ago, subspecies have trajectories: population expansion decline remnant centers from Galilee Basin Townsville Coastal Plain, each represent lineages appreciable levels ∼4,000 ago. Moreover, report striking microgeographic structure Plain between populations <20 km apart associated barriers dispersal caused anthropogenic modification 50 years: namely construction Ross River Dam. Our findings highlight urgent need for approach prioritizes restoration re-establish connectivity finch.

Язык: Английский

Recent divergence and microgeographic genetic structure in an endangered Australian songbird: the southern black-throated finch DOI
Daniel M. Hooper, Kelsie A. Lopez,

Bronwyn G. Butcher

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown

Опубликована: Апрель 18, 2025

ABSTRACT Anthropogenic habitat loss and climate change threaten global biodiversity. Effective conservation management requires a detailed understanding of geographic structure, genetic diversity, demography threatened species. The black-throated finch, Poephila cincta , is an Australian songbird with two subspecies: atropygialis . southern subspecies, has experienced ∼80% range contraction over the last century listed as endangered but surveys it are incomplete. Here, we use combination reduced representation whole genome sequencing to examine differentiation, spatial demographic history in both forms this We find that genetically distinct despite divergence gene flow geographically isolated by biogeographic barrier known Einasleigh Uplands. Since they shared common ancestor ∼400,000 years ago, subspecies have trajectories: population expansion decline remnant centers from Galilee Basin Townsville Coastal Plain, each represent lineages appreciable levels ∼4,000 ago. Moreover, report striking microgeographic structure Plain between populations <20 km apart associated barriers dispersal caused anthropogenic modification 50 years: namely construction Ross River Dam. Our findings highlight urgent need for approach prioritizes restoration re-establish connectivity finch.

Язык: Английский

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