Ageing and Growth of the Endangered Kaiser's Mountain Newt,<i>Neurergus kaiseri</i>(Caudata: Salamandridae), in the Southern Zagros Range, Iran

Farasat, Hossein; Sharifi, Mozafar

doi:10.1670/14-142

Cited by 5 publications

(1 citation statement)

References 16 publications

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“…It is also possible that N . kaiseri with high longevity of up to 14 years [ 56 ] living in a very small distribution range (789km 2 ) with a small nearest neighbor distance 11.84 km [ 26 ] avoid or delay the effect of genetic drift.…”

Section: Discussionmentioning

confidence: 99%

Population Genetic Structure of the Endangered Kaiser’s Mountain Newt, Neurergus kaiseri (Amphibia: Salamandridae)

2016

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Species often exhibit different levels of genetic structuring correlated to their environment. However, understanding how environmental heterogeneity influences genetic variation is difficult because the effects of gene flow, drift and selection are confounded. We investigated the genetic variation and its ecological correlates in an endemic and critically endangered stream breeding mountain newt, Neurergus kaiseri, within its entire range in southwestern Iran. We identified two geographic regions based on phylogenetic relationships using Bayesian inference and maximum likelihood of 779 bp mtDNA (D-loop) in 111 individuals from ten of twelve known breeding populations. This analysis revealed a clear divergence between northern populations, located in more humid habitats at higher elevation, and southern populations, from drier habitats at lower elevations regions. From seven haplotypes found in these populations none was shared between the two regions. Analysis of molecular variance (AMOVA) of N. kaiseri indicates that 94.03% of sequence variation is distributed among newt populations and 5.97% within them. Moreover, a high degree of genetic subdivision, mainly attributable to the existence of significant variance among the two regions is shown (θCT = 0.94, P = 0.002). The positive and significant correlation between geographic and genetic distances (r = 0.61, P = 0.002) following controlling for environmental distance suggests an important influence of geographic divergence of the sites in shaping the genetic variation and may provide tools for a possible conservation based prioritization policy for the endangered species.

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Section: Discussionmentioning

confidence: 99%

Population Genetic Structure of the Endangered Kaiser’s Mountain Newt, Neurergus kaiseri (Amphibia: Salamandridae)

2016

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Effects of climate change on habitat and connectivity for populations of a vulnerable, endemic salamander in Iran

Ashrafzadeh

Naghipour

Haidarian

et al. 2019

Global Ecology and Conservation

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The least‐cost path analysis of landscape genetics identifies two dispersal routes for the threatened Kaiser's mountain newt (Caudata: Salamandridae)

Vaissi

2021

J Zool Syst Evol Res

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Variation in landscape features plays an important role in shaping the distribution of species in natural populations. These can influence population connectivity, gene flow, genetic drift, and ultimately the genetic structure and diversity of isolated populations. In this study, we aimed to identify the impact of landscape heterogeneity on the dispersal patterns of the threatened Kaiser's mountain newt, Neurergus kaiseri.We integrated population genetics and geospatial data to predict the rates and patterns of genetic differentiation as well as to identify potential movement corridors among populations. For this purpose, we used two mitochondrial DNA markers and combined data on genetic subdivision (θ ST ) and least-cost path (LCP) analyses from 15 fragmented highland streams and spring-ponds representing the entire species distribution area. Five possible dispersal routes used in this study were straight-line, stepping-stone, least cost slope, stream likelihood and combination least cost slope/ stream likelihood. Genetic and LCP analyses indicated that two clades in the northern and southern distribution range have experienced two differing dispersal routes. The newts identified through the northern populations with high genetic diversity have dispersed with stepping-stone movements. In contrast, the southern populations are more isolated and dispersal might be facilitated by aquatic corridors in the least cost slope. We suggest that this study allows new implications for the conservation priorities of N. kaiseri by estimating the potential dispersal activity of the species in the face of climate change and ongoing habitat destruction relating to human activities in the southern Zagros mountains of Iran.

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Ageing and Growth of the Endangered Kaiser's Mountain Newt,Neurergus kaiseri(Caudata: Salamandridae), in the Southern Zagros Range, Iran

Cited by 5 publications

References 16 publications

Population Genetic Structure of the Endangered Kaiser’s Mountain Newt, Neurergus kaiseri (Amphibia: Salamandridae)

Population Genetic Structure of the Endangered Kaiser’s Mountain Newt, Neurergus kaiseri (Amphibia: Salamandridae)

Effects of climate change on habitat and connectivity for populations of a vulnerable, endemic salamander in Iran

The least‐cost path analysis of landscape genetics identifies two dispersal routes for the threatened Kaiser's mountain newt (Caudata: Salamandridae)

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