RESUMEN
Rhinopoma microphyllum is one of the species of bats that lives in arid and semi-arid areas of Iran. The initial suggestion of the presence of two subspecies R. m. microphyllum and R. m. harrisoni based on their morphological characteristics has been questioned on the basis of small differences between the populations. Later, other researchers assigned Iranian populations of this species to one or two subspecies based on their morphological and molecular characteristics. The present study provides a phylogeographical analysis of this species using 687 bp of the mitochondrial cytochrome b in 81 bats in Iran, Jordan, Levant and Ethiopia. Based on mtDNA sequences, we found a low degree of genetic diversity in the Iranian populations of R. microphyllum (π = 0.0025), which shows a close relationship between the haplotypes. The analysis of genetic distance (0.15-1.93%), phylogenetic trees, and statistical parsimony network showed that all Iranian samples were grouped in the same clade, while Levant, Jordan and Ethiopian samples belonged to a different clade. Molecular dating suggested the Iranian R. microphyllum lineage split from the R. microphyllum of the Levant and Jordan clade during the Pliocene 3.18 (2.11-4.32 Ma). Taking these results into consideration, we can conclude that all Iranian specimens belong to the same subspecies as R. m. harrisoni since molecular results indicate that Iranian samples are differ from Levant subspecies (R. m. microphyllum).
Asunto(s)
Quirópteros/genética , Citocromos b/genética , ADN Mitocondrial/genética , Especiación Genética , Animales , Quirópteros/clasificación , Variación Genética/genética , Genética de Población , Haplotipos/genética , Mitocondrias/genética , Filogeografía , Especificidad de la EspecieRESUMEN
In this paper, we investigate the genetic structure and phylogeography of Rhinolophus ferrumequinum, using the mitochondrial cytochrome b gene (1017 bp) in Iran and adjacent regions. The total haplotype and nucleotide diversity are 0.63 ± 0.055 and 0.0021 ± 0.00017, respectively which suggest that R. ferrumequinum exhibits low genetic diversity. AMOVA analysis shows that more variation of genetic differentiation is present among populations of phylogenetic groupings than within populations. Our phylogenetic results support the monophyly of R. ferrumequinum and suggest this taxon comprises three allopatric/parapatric phylogroups that are distributed in Europe-western Turkey, eastern Turkey-northern Iran, and southern Iran. The Europe-western Turkey lineage (clade 2) split from the eastern Turkey-Iran lineage (clade 1) during the middle Pleistocene (0.8534 (ca.I)-0.6454 (ca.II) Ma). The divergence time among subclades A and B occurred during the mid-Pleistocene (0.4849 (ca.I)-0.369 (ca.II) Ma). All phylogenetic analyses also indicate that the Iranian and eastern Turkey R. ferrumequinum diverged from Europe and western Turkey R. ferrumequinum, with the mean percentage sequence differences ranging from 0.92%-0.75% between them. We infer that long-term isolation of R. ferrumequinum in spatially distinct refugia in parts of southwestern and northeastern Iran has promoted distinct phylogeographic lineages during the Pleistocene.
Asunto(s)
Quirópteros/genética , Citocromos b/genética , Animales , Evolución Biológica , ADN Mitocondrial/genética , Evolución Molecular , Genes Mitocondriales/genética , Variación Genética/genética , Genética de Población/métodos , Genoma Mitocondrial/genética , Haplotipos/genética , Irán , Mitocondrias/genética , Filogenia , Filogeografía/métodos , Análisis de Secuencia de ADN/métodos , TurquíaRESUMEN
This study investigates the population genetic structure of Miniopterus pallidus using the D-loop region of mitochondrial DNA (331 bp) from 13 localities in Iran. We found a high number of haplotypes (N = 43) and high nucleotide diversity (π = 0.02). The average K2P genetic distance was high within (2.59%) and between (2.54%) the Iranian populations of M. pallidus and analysis of molecular variance revealed that most genetic variability was related to differences within populations. The positive and significant association between pairwise genetic and environmental distances (r = 0.443, p = .01) after accounting for the effect of geographical distances suggests that substantial influence of the climatic factors among different sites have shaped the genetic variation in this species. Neutrality tests showed historical demographic events when applying Fu's Fs, but Tajima's statistic was nonsignificant, indicating a deviation from the theoretical model of expansion. The hypothesis of sudden-expansion was not rejected by analyses of mismatch distribution as the Raggedness and SSD were insignificant (p(r)= .39 and p(SSD) = .38). Similarly, BSP results approximately revealed a major historical expansion around 81,000 years ago and a recent population decline around 13,000 years ago. Phylogenetic trees illustrated that all Iranian M. pallidus populations, as well as those from eastern Turkey and Azerbaijan, form a monophyletic clade, whereas the samples from western Turkey, Georgia and Greece belong to M. schreibersii clade. The haplotype network was consistent with these findings for M. pallidus populations in Iran and showed a high level of reticulation.
Asunto(s)
Quirópteros/genética , ADN Mitocondrial/genética , Animales , Marcadores Genéticos , Genética de Población , IránRESUMEN
Molecular phylogeography and species distribution modelling (SDM) suggest that late Quaternary glacial cycles have portrayed a significant role in structuring current population genetic structure and diversity. Based on phylogenetic relationships using Bayesian inference and maximum likelihood of 535 bp mtDNA (D-loop) and 745 bp mtDNA (Cytb) in 62 individuals of the Mediterranean Horseshoe Bat, Rhinolophus euryale, from 13 different localities in Iran we identified two subspecific populations with differing population genetic structure distributed in southern Zagros Mts. and northern Elburz Mts. Analysis of molecular variance (AMOVA) obtained from D-loop sequences indicates that 21.18% of sequence variation is distributed among populations and 10.84% within them. Moreover, a degree of genetic subdivision, mainly attributable to the existence of significant variance among the two regions is shown (θCT = 0.68, p = .005). The positive and significant correlation between geographic and genetic distances (R2 = 0.28, r = 0.529, p = .000) is obtained following controlling for environmental distance. Spatial distribution of haplotypes indicates that marginal population of the species in southern part of the species range have occupied this section as a glacial refugia. However, this genetic variation, in conjunction with results of the SDM shows a massive postglacial range expansion for R. euryale towards higher latitudes in Iran.
Asunto(s)
Quirópteros/genética , ADN Mitocondrial/genética , Evolución Molecular , Polimorfismo Genético , Animales , ADN Mitocondrial/química , Complejo IV de Transporte de Electrones/genética , Haplotipos , Irán , FilogeografíaRESUMEN
To examine the level of genetic differentiation in the sequences of the mitochondrial D-loop gene of Rhinolophus ferrumequinum, and to evaluate the current taxonomic status of this species, 50 tissue samples of greater horseshoe bats were collected in 2011-2015 from 21 different localities in northwest, northeast, west, central, and south regions of Iran. Twenty-two published D-loop sequences from Europe (Switzerland, United Kingdom, Bulgaria, and Tunisia), and Anatolia (south, west, and east Turkey) were downloaded from GenBank. Molecular genetic analyses revealed remarkable variation among populations of R. ferrumequinum. Two major clades with strong support were identified within the greater horseshoe bat. One of these clades consists of individuals of R. ferrumequinum from Iran and eastern Turkey, and is further subdivided into two subclades. A second clade includes samples from western Turkey and Europe. The two subclades from Iran and Turkey and the second clade from western Turkey and Europe represent three diagnosable categories, which most probably warrant three subspecies for the species. Thus, based on genetic differences, it is clear that two subspecific populations are found in Iran: R. f. irani (southern Iran) and R. f. proximus (northern Iran).
Asunto(s)
Quirópteros/clasificación , Quirópteros/genética , Mitocondrias/genética , Distribución Animal , Animales , Irán , Especificidad de la EspecieRESUMEN
New species of the genus Niphargus is described and named as N. kermanshahi sp. nov. from a karst spring in west of Iran. This species is identified based on the analysis of morphological characters and 28S ribosomal DNA sequences. Taxonomic status and phylogenetic position of this species is discussed in comparison to other Iranian species of Niphargus genus.
Asunto(s)
Anfípodos/clasificación , Anfípodos/anatomía & histología , Anfípodos/genética , Anfípodos/crecimiento & desarrollo , Distribución Animal , Estructuras Animales/anatomía & histología , Estructuras Animales/crecimiento & desarrollo , Animales , Tamaño Corporal , Irán , Masculino , Tamaño de los Órganos , FilogeniaRESUMEN
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.