Paso doble : A two-step Late Pleistocene range expansion in the Tyrrhenian tree frog Hyla sarda
(2021) In Gene 780.- Abstract
The Tyrrhenian tree frog, Hyla sarda, is an amphibian endemic to the Tyrrhenian islands (Western Mediterranean). Previous investigations of its Pleistocene evolutionary history suggested that it colonised the northern portion of its current range, through a spatial diffusion process from the Sardinia island, during the last glaciation. However, southern and northern portions of the species’ range experienced markedly different climatic conditions during the Late Pleistocene, suggesting the possibility of an unusual two-step process of demographic expansion. Here, we use Bayesian phylogeographic approaches to locate the ancestral area in Sardinia and to characterise better the demographic component of this expansion event. These analyses... (More)
The Tyrrhenian tree frog, Hyla sarda, is an amphibian endemic to the Tyrrhenian islands (Western Mediterranean). Previous investigations of its Pleistocene evolutionary history suggested that it colonised the northern portion of its current range, through a spatial diffusion process from the Sardinia island, during the last glaciation. However, southern and northern portions of the species’ range experienced markedly different climatic conditions during the Late Pleistocene, suggesting the possibility of an unusual two-step process of demographic expansion. Here, we use Bayesian phylogeographic approaches to locate the ancestral area in Sardinia and to characterise better the demographic component of this expansion event. These analyses located the ancestral area for H. sarda populations along the central-eastern coast of the Sardinia island, within an area previously shown to host suitable bioclimatic conditions for H. sarda populations throughout the Late Pleistocene. Historical demographic reconstructions clearly showed that a two-step process of demographic growth fits well the data, with northern populations expanding later than Sardinia populations. The harsher climatic conditions occurred in northern islands during the glacial epoch, as compared to Sardinia, likely delayed tree frog colonisation of northern territories, and the associated demographic growth.
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- author
- Spadavecchia, Giada ; Chiocchio, Andrea LU ; Bisconti, Roberta and Canestrelli, Daniele
- organization
- publishing date
- 2021-05
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Bayesian phylogeography, Historical demography, Hyla sarda, Two-epoch model, Tyrrhenian islands
- in
- Gene
- volume
- 780
- article number
- 145489
- publisher
- Elsevier
- external identifiers
-
- pmid:33588038
- scopus:85101821969
- ISSN
- 0378-1119
- DOI
- 10.1016/j.gene.2021.145489
- language
- English
- LU publication?
- yes
- id
- 404a9d12-3cf4-4f4f-80ba-9616196c0758
- date added to LUP
- 2021-12-28 13:52:38
- date last changed
- 2025-01-13 20:46:28
@article{404a9d12-3cf4-4f4f-80ba-9616196c0758,
abstract = {{<p>The Tyrrhenian tree frog, Hyla sarda, is an amphibian endemic to the Tyrrhenian islands (Western Mediterranean). Previous investigations of its Pleistocene evolutionary history suggested that it colonised the northern portion of its current range, through a spatial diffusion process from the Sardinia island, during the last glaciation. However, southern and northern portions of the species’ range experienced markedly different climatic conditions during the Late Pleistocene, suggesting the possibility of an unusual two-step process of demographic expansion. Here, we use Bayesian phylogeographic approaches to locate the ancestral area in Sardinia and to characterise better the demographic component of this expansion event. These analyses located the ancestral area for H. sarda populations along the central-eastern coast of the Sardinia island, within an area previously shown to host suitable bioclimatic conditions for H. sarda populations throughout the Late Pleistocene. Historical demographic reconstructions clearly showed that a two-step process of demographic growth fits well the data, with northern populations expanding later than Sardinia populations. The harsher climatic conditions occurred in northern islands during the glacial epoch, as compared to Sardinia, likely delayed tree frog colonisation of northern territories, and the associated demographic growth.</p>}},
author = {{Spadavecchia, Giada and Chiocchio, Andrea and Bisconti, Roberta and Canestrelli, Daniele}},
issn = {{0378-1119}},
keywords = {{Bayesian phylogeography; Historical demography; Hyla sarda; Two-epoch model; Tyrrhenian islands}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Gene}},
title = {{Paso doble : A two-step Late Pleistocene range expansion in the Tyrrhenian tree frog Hyla sarda}},
url = {{http://dx.doi.org/10.1016/j.gene.2021.145489}},
doi = {{10.1016/j.gene.2021.145489}},
volume = {{780}},
year = {{2021}},
}