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

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Sinai , I , Segev , O , Wei , G , Oron , T , Merilä , J , Templeton , A R , Blaustein , L , Greenbaum , G & Blank , L 2019 , ' The role of landscape and history on the genetic structure of peripheral populations of the Near Eastern fire salamander, Salamandra infraimmaculata, in Northern Israel ' , Conservation Genetics , vol. 20 , no. 4 , pp. 875-889 . https://doi.org/10.1007/s10592-019-01181-5

Title: The role of landscape and history on the genetic structure of peripheral populations of the Near Eastern fire salamander, Salamandra infraimmaculata, in Northern Israel
Author: Sinai, Iftah; Segev, Ori; Wei, Gilad; Oron, Talya; Merilä, Juha; Templeton, Alan R.; Blaustein, Leon; Greenbaum, Gili; Blank, Lior
Contributor: University of Helsinki, Organismal and Evolutionary Biology Research Programme
Date: 2019-08
Language: eng
Number of pages: 15
Belongs to series: Conservation Genetics
ISSN: 1566-0621
URI: http://hdl.handle.net/10138/314133
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.
Subject: Endangered salamander
Genetic diversity
Gene flow
Ecology
Peripheral populations
Conservation
SPECIES BORDERS
CLIMATE-CHANGE
CONSERVATION
DISTANCE
TERRESTRIAL
SOFTWARE
RANGE
DISPERSAL
DIVERSITY
AMPHIBIA
1172 Environmental sciences
1181 Ecology, evolutionary biology
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