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The role of landscape and history on the genetic structure of peripheral populations of the Near Eastern fire salamander, Salamandra infraimmaculata, in Northern Israel
Year:
2019
Source of publication :
conservation genetics
Authors :
Blank, Lior
;
.
Volume :
Co-Authors:

Ori Segev, Leon Blaustein  -Institute of Evolution and Department of Evolutionary and Environmental Biology, Faculty of Natural SciencesUniversity of HaifaHaifaIsrael 

Gilad Weil, Talya Oron - Israel Nature and Parks AuthorityJerusalemIsrae

Juha Merilä - Ecological Genetics Research Unit, Organismal and Evolutionary Biology Research Programme, Faculty Biological & Environmental SciencesUniversity of HelsinkiHelsinkiFinland

Alan R. Templeton - Department of BiologyWashington UniversitySt. LouisUSA

Gili Greenbaum - Department of BiologyStanford UniversityPalo AltoUSA

Facilitators :
From page:
1
To page:
15
(
Total pages:
15
)
Abstract:

Genetic studies on core versus peripheral populations have yielded many patterns. This diversity in genetic patterns may reflect diversity in the meaning of “peripheral populations” as defined by geography, gene flow patterns, historical effects, and ecological conditions. Populations at the lower latitude periphery of a species’ range are of particular concern because they may be at increased risk for extinction due to global climate change. In this work we aim to understand the impact of landscape and ecological factors on different geographical types of peripheral populations with respect to levels of genetic diversity and patterns of local population differentiation. We examined three geographical types of peripheral populations of the endangered salamander, Salamandra infraimmaculata, in Northern Israel, in the southernmost periphery of the genus Salamandra, by analyzing the variability in 15 microsatellite loci from 32 sites. Our results showed that: (1) genetic diversity decreases towards the geographical periphery of the species’ range; (2) genetic diversity in geographically disjunct peripheral areas is low compared to the core or peripheral populations that are contiguous to the core and most likely affected by a founder effect; (3) ecologically marginal conditions enhance population subdivision. The patterns we found lead to the conclusion that genetic diversity is influenced by a combination of geographical, historical, and ecological factors. These complex patterns should be addressed when prioritizing areas for conservation.

Note:
Related Files :
Conservation
Ecology
Endangered salamander
gene flow
genetic diversity
Peripheral populations
Show More
Related Content
More details
DOI :
https://doi.org/10.1007/s10592-019-01181-5
Article number:
0
Affiliations:
Database:
Google Scholar
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
40160
Last updated date:
02/03/2022 17:27
Creation date:
29/04/2019 11:43
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Scientific Publication
The role of landscape and history on the genetic structure of peripheral populations of the Near Eastern fire salamander, Salamandra infraimmaculata, in Northern Israel

Ori Segev, Leon Blaustein  -Institute of Evolution and Department of Evolutionary and Environmental Biology, Faculty of Natural SciencesUniversity of HaifaHaifaIsrael 

Gilad Weil, Talya Oron - Israel Nature and Parks AuthorityJerusalemIsrae

Juha Merilä - Ecological Genetics Research Unit, Organismal and Evolutionary Biology Research Programme, Faculty Biological & Environmental SciencesUniversity of HelsinkiHelsinkiFinland

Alan R. Templeton - Department of BiologyWashington UniversitySt. LouisUSA

Gili Greenbaum - Department of BiologyStanford UniversityPalo AltoUSA

The role of landscape and history on the genetic structure of peripheral populations of the Near Eastern fire salamander, Salamandra infraimmaculata, in Northern Israel

Genetic studies on core versus peripheral populations have yielded many patterns. This diversity in genetic patterns may reflect diversity in the meaning of “peripheral populations” as defined by geography, gene flow patterns, historical effects, and ecological conditions. Populations at the lower latitude periphery of a species’ range are of particular concern because they may be at increased risk for extinction due to global climate change. In this work we aim to understand the impact of landscape and ecological factors on different geographical types of peripheral populations with respect to levels of genetic diversity and patterns of local population differentiation. We examined three geographical types of peripheral populations of the endangered salamander, Salamandra infraimmaculata, in Northern Israel, in the southernmost periphery of the genus Salamandra, by analyzing the variability in 15 microsatellite loci from 32 sites. Our results showed that: (1) genetic diversity decreases towards the geographical periphery of the species’ range; (2) genetic diversity in geographically disjunct peripheral areas is low compared to the core or peripheral populations that are contiguous to the core and most likely affected by a founder effect; (3) ecologically marginal conditions enhance population subdivision. The patterns we found lead to the conclusion that genetic diversity is influenced by a combination of geographical, historical, and ecological factors. These complex patterns should be addressed when prioritizing areas for conservation.

Scientific Publication
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