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Disentangling the complex evolutionary history of the Western Palearctic blue tits (Cyanistes spp.) - phylogenomic analyses suggest radiation by multiple colonisation events and subsequent isolation.

Stervander, Martin LU ; Illera, Juan Carlos; Kvist, Laura; Barbosa, Pedro; Keehnen, Naomi; Pruisscher, Peter; Bensch, Staffan LU and Hansson, Bengt LU (2015) In Molecular Ecology 24(10). p.2477-2494
Abstract
Isolated islands and their often unique biota continue to play key roles for understanding the importance of drift, genetic variation, and adaptation in the process of population differentiation and speciation. One island system that has inspired and intrigued evolutionary biologists is the blue tit complex (Cyanistes spp.) in Europe and Africa, in particular the complex evolutionary history of the multiple genetically distinct taxa of the Canary Islands. Understanding Afrocanarian colonisation events is of particular importance because of recent unconventional suggestions that these island populations acted as source of the widespread population in mainland Africa. We investigated the relationship between mainland and island blue tits... (More)
Isolated islands and their often unique biota continue to play key roles for understanding the importance of drift, genetic variation, and adaptation in the process of population differentiation and speciation. One island system that has inspired and intrigued evolutionary biologists is the blue tit complex (Cyanistes spp.) in Europe and Africa, in particular the complex evolutionary history of the multiple genetically distinct taxa of the Canary Islands. Understanding Afrocanarian colonisation events is of particular importance because of recent unconventional suggestions that these island populations acted as source of the widespread population in mainland Africa. We investigated the relationship between mainland and island blue tits using a combination of Sanger sequencing at a population level (20 loci; 12,500 nucleotides) and next generation sequencing of single population representatives (>3,200,000 nucleotides), analysed in coalescence and phylogenetic frameworks. We found (i) that Afrocanarian blue tits are monophyletic and represent four major clades, (ii) that the blue tit complex has a continental origin, and that the Canary Islands were colonised three times, (iii) that all island populations have low genetic variation, indicating low long-term effective population sizes, and (iv) that populations on La Palma and in Libya represent relicts of an ancestral North African population. Further, demographic reconstructions revealed (v) that the Canary Islands, conforming to traditional views, hold sink populations, which have not served as source for back colonisation of the African mainland. Our study demonstrates the importance of complete taxon sampling and an extensive multi-marker study design to obtain robust phylogeographical inferences. This article is protected by copyright. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Molecular Ecology
volume
24
issue
10
pages
2477 - 2494
publisher
Wiley-Blackwell
external identifiers
  • pmid:25753616
  • wos:000353961500015
  • scopus:84928370189
ISSN
0962-1083
DOI
10.1111/mec.13145
language
English
LU publication?
yes
id
c454dd9d-1b0a-4ec9-8e32-af5ea514749d (old id 5264898)
date added to LUP
2015-04-14 12:54:29
date last changed
2017-09-10 03:06:47
@article{c454dd9d-1b0a-4ec9-8e32-af5ea514749d,
  abstract     = {Isolated islands and their often unique biota continue to play key roles for understanding the importance of drift, genetic variation, and adaptation in the process of population differentiation and speciation. One island system that has inspired and intrigued evolutionary biologists is the blue tit complex (Cyanistes spp.) in Europe and Africa, in particular the complex evolutionary history of the multiple genetically distinct taxa of the Canary Islands. Understanding Afrocanarian colonisation events is of particular importance because of recent unconventional suggestions that these island populations acted as source of the widespread population in mainland Africa. We investigated the relationship between mainland and island blue tits using a combination of Sanger sequencing at a population level (20 loci; 12,500 nucleotides) and next generation sequencing of single population representatives (>3,200,000 nucleotides), analysed in coalescence and phylogenetic frameworks. We found (i) that Afrocanarian blue tits are monophyletic and represent four major clades, (ii) that the blue tit complex has a continental origin, and that the Canary Islands were colonised three times, (iii) that all island populations have low genetic variation, indicating low long-term effective population sizes, and (iv) that populations on La Palma and in Libya represent relicts of an ancestral North African population. Further, demographic reconstructions revealed (v) that the Canary Islands, conforming to traditional views, hold sink populations, which have not served as source for back colonisation of the African mainland. Our study demonstrates the importance of complete taxon sampling and an extensive multi-marker study design to obtain robust phylogeographical inferences. This article is protected by copyright. All rights reserved.},
  author       = {Stervander, Martin and Illera, Juan Carlos and Kvist, Laura and Barbosa, Pedro and Keehnen, Naomi and Pruisscher, Peter and Bensch, Staffan and Hansson, Bengt},
  issn         = {0962-1083},
  language     = {eng},
  number       = {10},
  pages        = {2477--2494},
  publisher    = {Wiley-Blackwell},
  series       = {Molecular Ecology},
  title        = {Disentangling the complex evolutionary history of the Western Palearctic blue tits (Cyanistes spp.) - phylogenomic analyses suggest radiation by multiple colonisation events and subsequent isolation.},
  url          = {http://dx.doi.org/10.1111/mec.13145},
  volume       = {24},
  year         = {2015},
}