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Extensive introgression and mosaic genomes of Mediterranean endemic lizards

Yang, Weizhao LU ; Feiner, Nathalie LU ; Pinho, Catarina ; While, Geoffrey M. LU ; Kaliontzopoulou, Antigoni ; Harris, D. James ; Salvi, Daniele LU orcid and Uller, Tobias LU (2021) In Nature Communications 12(1).
Abstract

The Mediterranean basin is a hotspot of biodiversity, fuelled by climatic oscillation and geological change over the past 20 million years. Wall lizards of the genus Podarcis are among the most abundant, diverse, and conspicuous Mediterranean fauna. Here, we unravel the remarkably entangled evolutionary history of wall lizards by sequencing genomes of 34 major lineages covering 26 species. We demonstrate an early (>11 MYA) separation into two clades centred on the Iberian and Balkan Peninsulas, and two clades of Mediterranean island endemics. Diversification within these clades was pronounced between 6.5–4.0 MYA, a period spanning the Messinian Salinity Crisis, during which the Mediterranean Sea nearly dried up before rapidly... (More)

The Mediterranean basin is a hotspot of biodiversity, fuelled by climatic oscillation and geological change over the past 20 million years. Wall lizards of the genus Podarcis are among the most abundant, diverse, and conspicuous Mediterranean fauna. Here, we unravel the remarkably entangled evolutionary history of wall lizards by sequencing genomes of 34 major lineages covering 26 species. We demonstrate an early (>11 MYA) separation into two clades centred on the Iberian and Balkan Peninsulas, and two clades of Mediterranean island endemics. Diversification within these clades was pronounced between 6.5–4.0 MYA, a period spanning the Messinian Salinity Crisis, during which the Mediterranean Sea nearly dried up before rapidly refilling. However, genetic exchange between lineages has been a pervasive feature throughout the entire history of wall lizards. This has resulted in a highly reticulated pattern of evolution across the group, characterised by mosaic genomes with major contributions from two or more parental taxa. These hybrid lineages gave rise to several of the extant species that are endemic to Mediterranean islands. The mosaic genomes of island endemics may have promoted their extraordinary adaptability and striking diversity in body size, shape and colouration, which have puzzled biologists for centuries.

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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nature Communications
volume
12
issue
1
article number
2762
publisher
Nature Publishing Group
external identifiers
  • scopus:85105798253
  • pmid:33980851
ISSN
2041-1723
DOI
10.1038/s41467-021-22949-9
language
English
LU publication?
yes
id
08bed1b1-2e39-4399-b018-c62d1bb14895
date added to LUP
2021-12-23 14:03:59
date last changed
2024-06-17 01:57:04
@article{08bed1b1-2e39-4399-b018-c62d1bb14895,
  abstract     = {{<p>The Mediterranean basin is a hotspot of biodiversity, fuelled by climatic oscillation and geological change over the past 20 million years. Wall lizards of the genus Podarcis are among the most abundant, diverse, and conspicuous Mediterranean fauna. Here, we unravel the remarkably entangled evolutionary history of wall lizards by sequencing genomes of 34 major lineages covering 26 species. We demonstrate an early (&gt;11 MYA) separation into two clades centred on the Iberian and Balkan Peninsulas, and two clades of Mediterranean island endemics. Diversification within these clades was pronounced between 6.5–4.0 MYA, a period spanning the Messinian Salinity Crisis, during which the Mediterranean Sea nearly dried up before rapidly refilling. However, genetic exchange between lineages has been a pervasive feature throughout the entire history of wall lizards. This has resulted in a highly reticulated pattern of evolution across the group, characterised by mosaic genomes with major contributions from two or more parental taxa. These hybrid lineages gave rise to several of the extant species that are endemic to Mediterranean islands. The mosaic genomes of island endemics may have promoted their extraordinary adaptability and striking diversity in body size, shape and colouration, which have puzzled biologists for centuries.</p>}},
  author       = {{Yang, Weizhao and Feiner, Nathalie and Pinho, Catarina and While, Geoffrey M. and Kaliontzopoulou, Antigoni and Harris, D. James and Salvi, Daniele and Uller, Tobias}},
  issn         = {{2041-1723}},
  language     = {{eng}},
  number       = {{1}},
  publisher    = {{Nature Publishing Group}},
  series       = {{Nature Communications}},
  title        = {{Extensive introgression and mosaic genomes of Mediterranean endemic lizards}},
  url          = {{http://dx.doi.org/10.1038/s41467-021-22949-9}},
  doi          = {{10.1038/s41467-021-22949-9}},
  volume       = {{12}},
  year         = {{2021}},
}