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Robbery in progress: Historical museum collections bring to light a mitochondrial capture within a bird species widespread across southern Australia, the Copperback Quail‐thrush Cinclosoma clarum

We surveyed mitochondrial, autosomal, and Z chromosome diversity within and between the Copperback Quail‐thrush Cinclosoma clarum and Chestnut Quail‐thrush C. castanotum, which together span the arid and semi‐arid zones of southern Australia, and primarily from specimens held in museum collections....

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Autores principales: McElroy, Kerensa, Black, Andrew, Dolman, Gaynor, Horton, Philippa, Pedler, Lynn, Campbell, Catriona D., Drew, Alex, Joseph, Leo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7381587/
https://www.ncbi.nlm.nih.gov/pubmed/32724551
http://dx.doi.org/10.1002/ece3.6403
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author McElroy, Kerensa
Black, Andrew
Dolman, Gaynor
Horton, Philippa
Pedler, Lynn
Campbell, Catriona D.
Drew, Alex
Joseph, Leo
author_facet McElroy, Kerensa
Black, Andrew
Dolman, Gaynor
Horton, Philippa
Pedler, Lynn
Campbell, Catriona D.
Drew, Alex
Joseph, Leo
author_sort McElroy, Kerensa
collection PubMed
description We surveyed mitochondrial, autosomal, and Z chromosome diversity within and between the Copperback Quail‐thrush Cinclosoma clarum and Chestnut Quail‐thrush C. castanotum, which together span the arid and semi‐arid zones of southern Australia, and primarily from specimens held in museum collections. We affirm the recent taxonomic separation of the two species and then focus on diversity within the more widespread of the two species, C. clarum. To guide further study of the system and what it offers to understanding the genomics of the differentiation and speciation processes, we develop and present a hypothesis to explain mitonuclear discordance that emerged in ourdata. Following a period of historical allopatry, secondary contact has resulted in an eastern mitochondrial genome replacing the western mitochondrial genome in western populations. This is predicted under a population‐level invasion in the opposite direction, that of the western population invading the range of the eastern one. Mitochondrial captures can be driven by neutral, demographic processes, or adaptive mechanisms, and we favor the hypothesized capture being driven by neutral means. We cannot fully reject the adaptive process but suggest how these alternatives may be further tested. We acknowledge an alternative hypothesis, which finds some support in phenotypic data published elsewhere, namely that outcomes of secondary contact have been more complex than our current genomic data suggest. Discriminating and reconciling these two alternative hypotheses, which may not be mutually exclusive, could be tested with closer sampling at levels of population, individual, and nucleotide than has so far been possible. This would be further aided by knowledge of the genetic basis to phenotypic variation described elsewhere.
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spelling pubmed-73815872020-07-27 Robbery in progress: Historical museum collections bring to light a mitochondrial capture within a bird species widespread across southern Australia, the Copperback Quail‐thrush Cinclosoma clarum McElroy, Kerensa Black, Andrew Dolman, Gaynor Horton, Philippa Pedler, Lynn Campbell, Catriona D. Drew, Alex Joseph, Leo Ecol Evol Hypothesis We surveyed mitochondrial, autosomal, and Z chromosome diversity within and between the Copperback Quail‐thrush Cinclosoma clarum and Chestnut Quail‐thrush C. castanotum, which together span the arid and semi‐arid zones of southern Australia, and primarily from specimens held in museum collections. We affirm the recent taxonomic separation of the two species and then focus on diversity within the more widespread of the two species, C. clarum. To guide further study of the system and what it offers to understanding the genomics of the differentiation and speciation processes, we develop and present a hypothesis to explain mitonuclear discordance that emerged in ourdata. Following a period of historical allopatry, secondary contact has resulted in an eastern mitochondrial genome replacing the western mitochondrial genome in western populations. This is predicted under a population‐level invasion in the opposite direction, that of the western population invading the range of the eastern one. Mitochondrial captures can be driven by neutral, demographic processes, or adaptive mechanisms, and we favor the hypothesized capture being driven by neutral means. We cannot fully reject the adaptive process but suggest how these alternatives may be further tested. We acknowledge an alternative hypothesis, which finds some support in phenotypic data published elsewhere, namely that outcomes of secondary contact have been more complex than our current genomic data suggest. Discriminating and reconciling these two alternative hypotheses, which may not be mutually exclusive, could be tested with closer sampling at levels of population, individual, and nucleotide than has so far been possible. This would be further aided by knowledge of the genetic basis to phenotypic variation described elsewhere. John Wiley and Sons Inc. 2020-05-31 /pmc/articles/PMC7381587/ /pubmed/32724551 http://dx.doi.org/10.1002/ece3.6403 Text en © 2020 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Hypothesis
McElroy, Kerensa
Black, Andrew
Dolman, Gaynor
Horton, Philippa
Pedler, Lynn
Campbell, Catriona D.
Drew, Alex
Joseph, Leo
Robbery in progress: Historical museum collections bring to light a mitochondrial capture within a bird species widespread across southern Australia, the Copperback Quail‐thrush Cinclosoma clarum
title Robbery in progress: Historical museum collections bring to light a mitochondrial capture within a bird species widespread across southern Australia, the Copperback Quail‐thrush Cinclosoma clarum
title_full Robbery in progress: Historical museum collections bring to light a mitochondrial capture within a bird species widespread across southern Australia, the Copperback Quail‐thrush Cinclosoma clarum
title_fullStr Robbery in progress: Historical museum collections bring to light a mitochondrial capture within a bird species widespread across southern Australia, the Copperback Quail‐thrush Cinclosoma clarum
title_full_unstemmed Robbery in progress: Historical museum collections bring to light a mitochondrial capture within a bird species widespread across southern Australia, the Copperback Quail‐thrush Cinclosoma clarum
title_short Robbery in progress: Historical museum collections bring to light a mitochondrial capture within a bird species widespread across southern Australia, the Copperback Quail‐thrush Cinclosoma clarum
title_sort robbery in progress: historical museum collections bring to light a mitochondrial capture within a bird species widespread across southern australia, the copperback quail‐thrush cinclosoma clarum
topic Hypothesis
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7381587/
https://www.ncbi.nlm.nih.gov/pubmed/32724551
http://dx.doi.org/10.1002/ece3.6403
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