Isolation, marine transgression and translocation of the bare-nosed wombat (Vombatus ursinus)

Alynn Martin; Scott Carver; Kirstin Proft; Tamieka A Fraser; Adam Polkinghorne; Sam Banks; Christopher P Burridge

doi:10.1111/eva.12785

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Isolation, marine transgression and translocation of the bare-nosed wombat (Vombatus ursinus)

Journal article

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Isolation, marine transgression and translocation of the bare-nosed wombat (Vombatus ursinus)

Alynn Martin, Scott Carver, Kirstin Proft, Tamieka A Fraser, Adam Polkinghorne, Sam Banks and Christopher P Burridge

Evolutionary Applications, Vol.12(6), pp.1114-1123

2019

DOI: https://doi.org/10.1111/eva.12785

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Abstract

Population genetics

Vombatus ursinus

genetic structure

conservation

spatial structure

island biogeography

Island populations can represent genetically distinct and evolutionarily important lineages relative to mainland conspecifics . However, phenotypic divergence of island populations does not necessarily reflect genetic divergence, particularly for lineages inhabiting islands periodically connected during Pleistocene low sea stands. Marine barriers may also not be solely responsible for any divergence that is observed. Here , we investigated genetic divergence among and within the three phenotypically -distinct subspecies of bare -nosed wombats (Vombatus ursinus) in southeast Australia that are presently -but were not historically -isolated by marine barriers. U sing genome -wide single nucleotide polymorphisms we identified three genetically distinct groups (mainland Australia, Bass Strait island, Tasmania) corresponding to the recognised subspecies. However, isolation by distance was observed in the Tasmanian population, indicating additional constraints on gene flow can contribute to divergence in the absence of marine barriers, and may also explain genetic structuring among fragmented mainland populations. W e additionally confirm origins and quantif y the genetic divergence of an island population 4 6 years after the introduction of 21 individuals from the Vulnerable Bass Strait subspecies. In light of our findings we make recommendations for the maintenance of genetic variation and fitness across the species range.

Details

Title: Isolation, marine transgression and translocation of the bare-nosed wombat (Vombatus ursinus)
Authors: Alynn Martin (Corresponding Author) - University of Tasmania
Scott Carver (Author) - University of Tasmania
Kirstin Proft (Author) - University of Tasmania
Tamieka A Fraser (Author) - University of the Sunshine Coast - School of Science & Engineering
Adam Polkinghorne (Author) - University of the Sunshine Coast - School of Science & Engineering
Sam Banks (Author) - Charles Darwin University
Christopher P Burridge (Author) - University of Tasmania
Publication details: Evolutionary Applications, Vol.12(6), pp.1114-1123
Publisher: Wiley-Blackwell Publishing Inc.
Date published: 2019
DOI: 10.1111/eva.12785
ISSN: 1752-4563; 1752-4563
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99451424502621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Evolutionary Biology