The role of landscape and history on the genetic structure of peripheral populations of the Near Eastern fire salamander, Salamandra infraimmaculata, in Northern Israel
SPECIES BORDERS
; CLIMATE-CHANGE
; CONSERVATION
; DISTANCE
; TERRESTRIAL
; SOFTWARE
; RANGE
; DISPERSAL
; DIVERSITY
; AMPHIBIA
WOS学科分类:
Biodiversity Conservation
; Genetics & Heredity
WOS研究方向:
Biodiversity & Conservation
; Genetics & Heredity
英文摘要:
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.
1.Univ Haifa, Fac Nat Sci, Inst Evolut, IL-3498838 Haifa, Israel 2.Univ Haifa, Fac Nat Sci, Dept Evolutionary & Environm Biol, IL-3498838 Haifa, Israel 3.Israel Nat & Pk Author, Jerusalem, Israel 4.Univ Helsinki, Fac Biol & Environm Sci, Ecol Genet Res Unit, Organismal & Evolutionary Biol Res Programme, Helsinki, Finland 5.Washington Univ, Dept Biol, Campus Box 1137, St Louis, MO 63130 USA 6.Stanford Univ, Dept Biol, Palo Alto, CA 94305 USA 7.ARO, Dept Plant Pathol & Weed Res, Volcani Ctr, IL-50250 Bet Dagan, Israel
Recommended Citation:
Sinai, Iftah,Segev, Ori,Wei, Gilad,et al. The role of landscape and history on the genetic structure of peripheral populations of the Near Eastern fire salamander, Salamandra infraimmaculata, in Northern Israel[J]. CONSERVATION GENETICS,2019-01-01,20(4):875-889