Morteza Naderi; Saeid Mohammadi; Neda Behdarvand
Volume 6, Issue 4 , June 2018, , Pages 113-121
Abstract
Abstract Mitochondrial genes important tool in various studies in the fields of animal evolution, is phylogeography and phylogenetic. Based on the analysis carried out by sequencing mitochondrial Cytochrome b gene, five samples of Iranian jerboa and two Hotson's Jerboa from the Mirabad plains and Chupanan ...
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Abstract Mitochondrial genes important tool in various studies in the fields of animal evolution, is phylogeography and phylogenetic. Based on the analysis carried out by sequencing mitochondrial Cytochrome b gene, five samples of Iranian jerboa and two Hotson's Jerboa from the Mirabad plains and Chupanan in Naein, Isfahan Province, respectively, were sampled, it was found that the divergence between the two groups, but this degree of intraspecific divergence between the two species is not enough to lead to the divergence. However, concludes that different habitat conditions, different diet and feeding behavior induced evolutionary divergence and this process in the future, especially in the absence of gene flow between populations may lead to speciation. Extensive studies and more accurate than relying on other molecular markers such as microsatellites and nDNA is suggested.
Morteza Naderi; Zahra Eftekhar; Mohammad Kaboli; Hamidreza Rezaei
Volume 6, Issue 3 , March 2018, , Pages 95-104
Abstract
Quaternary climatic fluctuations had remained phylogeographical footprints on some organisms. Relocation of northern populations of many species to the southern parts during ice ages, followed by subsequent northward expansions from refugia during interglacial periods had been resulted in intraspecific ...
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Quaternary climatic fluctuations had remained phylogeographical footprints on some organisms. Relocation of northern populations of many species to the southern parts during ice ages, followed by subsequent northward expansions from refugia during interglacial periods had been resulted in intraspecific morphological and molecular divergence. This model has been used Fat Dormouse was used as a model species for investigation about such events that happened in the Hyrcanian Refugium. By photographing of lower mandibles we would able to compare morphological differences between populations distributed along the Hyrcanian forests. We compared our results with previous molecular findings. However the role of remnant Hyrcanian forests as a refugium has been confirmed by some investigations but longterm survival and isolation of some species in this refugium from eastern and northern parts of Palearctic region trigged inter population’s evolutionary divergence. By investigation about these evolutionary diverged traits, some micro refugiums can be defined along the Hyrcanian refugia. In this study, we found some preliminary documents about the presence of eastern micro refugia based on morphological divergence of Glis glis as a model species.
Gilan Attaran-Fariman; Azadeh Beyg-Moradi; Hassan Zadeh-Abbas Shahabadi
Volume 5, Issue 4 , May 2017, , Pages 11-20
Abstract
Brittle stars belonging to family Ophiotrichidae and genus Ophiothrix are of common species in the intertidal zones and coral reefs of tropical region. Members of genus Ophiothrix are well distributed in Chabahar Bay at northern coast of Oman sea. These species morphologically are very simillar to species ...
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Brittle stars belonging to family Ophiotrichidae and genus Ophiothrix are of common species in the intertidal zones and coral reefs of tropical region. Members of genus Ophiothrix are well distributed in Chabahar Bay at northern coast of Oman sea. These species morphologically are very simillar to species of genus Macrophiothrix because of that often separating them based on morphological characteristics is difficult. That is why their accurate classification requires detailed morphological and molecular studies simultaneously. Sampling was taken place in Tis (Chabahar Bay) to study the morphology and Phylogeny of brittle stars based on COI gene sequence. Morphologically, this species has a five-lobed disc, trapezoidal arm plates and rectangular abdominal plates both are granular. Also, according to the results of molecular analysis Ophiothrix sp. With 49% bootstrap is supported in the clade of genus Ophiothrix and shows a monophyletic relationship with members of this genus. Although it is weakly supported, it seems that this species is a new species which due to the lack of studies about brittle stars of this region remains unknown.
