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Naeimeh Eskandarzadeh - One of the best experts on this subject based on the ideXlab platform.

  • A new species of Eryx (Serpentes: Erycidae) from Iran.
    Zootaxa, 2020
    Co-Authors: Naeimeh Eskandarzadeh, Nasrullah Rastegar-pouyani, Eskandar Rastegar-pouyani, Rajabizadeh, Jamil Zargan, Ashkan Hajinourmohamadi, Roman Nazarov, Soheil Sami, Hossein Nabizadeh, Majid Navaian
    Abstract:

    We describe a new species of the genus Eryx Daudin, 1803 from southern Iran that is morphologically closely related to the Indian sand boa, E. johnii. The new species, Eryx sistanensis sp. nov. has a distribution range from Zabol in the Sistan Region to the southern parts of Sistan Baluchistan, as well as Hormozgan Province of Iran. Morphologically, E. sistanensis sp. nov. differs from E. johnii by having fewer dorsal scale rows at midbody and the tail tip is not as blunt as E. johnii. The genetic distance (p-distance) between the new species and the Indian sand boa is considerable (9.1% for cytb and 11.8% for COI).

  • Revised classification of the genus Eryx Daudin, 1803 (Serpentes: Erycidae) in Iran and neighbouring areas, based on mtDNA sequences and morphological data
    Herpetological Journal, 2020
    Co-Authors: Naeimeh Eskandarzadeh
    Abstract:

    Several attempts have recently been made to elucidate taxonomic status and phylogenetic relationships among the species and subspecies of sand boas of the genus Eryx throughout their distribution range, with no stable consensus about their taxonomy. Here the phylogenetic relationships among the populations of Eryx in Iran and adjacent areas are studied based on two mitochondrial markers (cytb and 16S). Sixteen morphological characters were examined for evaluation of morphological differences among major populations. Ecological niche modeling was applied to demonstrate the potential distribution of the populations in Iran. ENMtools was also used to measure the degree of niche overlap among the major populations in Iran. Based on phylogenetic reconstruction and considering the genetic distances with specimens from type localities, E. tataricus is a junior synonym of E. miliaris and the subspecies rank for E. m. nogaiorum seems to be invalid. Considering the genetic distance of populations in western Iran and Iraq, and the habitat and morphological differences among the populations of Eryx in western Iran, Iraq and Egypt, the population of Eryx in western Iran is suggested as a different species from E. jaculus, named here as Eryx sp. and the ones from Iraq as Eryx cf. jaculus. Here, the evaluation and revision of taxonomic status, distribution ranges and descriptions of morphological characters of the studied species have been done.

  • modelling the habitat suitability of the arabian sand boa Eryx jayakari serpentes erycidae
    Zoology and ecology, 2018
    Co-Authors: Naeimeh Eskandarzadeh, Eskandar Rastegarpouyani, Nasrullah Rastegarpouyani, Reza Nasrabadi
    Abstract:

    The Arabian sand boa, Eryx jayakari Boulenger, 1888, is a highly adapted species living mostly in sandy deserts of the Arabian Peninsula and southwestern Iran. In order to reveal the most suitable habitats and determine the most effective environmental factors in distribution of the species through maximum entropy approach (MaxEnt), recorded localities of the species with bioclimatic, altitude, slope, soil and land cover variables were analyzed. Altitude with 35.93% contribution and annual mean temperature with 23.60% contribution were the most effecting factors on the distribution of the species. According to the projected map, some parts of the coastal areas of the Red Sea, the Persian Gulf and the Gulf of Oman with low altitude and interior regions of the Arabian Peninsula are among the suitable habitats of the species.

  • notes on morphology of the arabian sand boa Eryx jayakari boulenger 1888 serpentes erycidae from iran
    Zoology and ecology, 2018
    Co-Authors: Naeimeh Eskandarzadeh, Eskandar Rastegarpouyani, Nasrullah Rastegarpouyani, Fatemeh Todehdehghan
    Abstract:

    Herein we present morphological characters of five Eryx jayakari specimens from southwestern Iran and their comparison with other records of this species from its distribution range and with the holotype sample (BMNH 46.1.7.99) from Muscat, Oman.

  • Sexual Dimorphism in the Javelin Sand Boa, Eryx jaculus (Linnaeus, 1758) (Serpentes: Erycidae), from Western Iran
    Current Herpetology, 2018
    Co-Authors: Naeimeh Eskandarzadeh, Nasrullah Rastegar-pouyani, Eskandar Rastegar-pouyani, Fatemeh Todehdehghan, Rajabizadeh
    Abstract:

    The Javelin sand boa, Eryx jaculus, is one of the erycid snakes occurring in Iran. In order to investigate sexual dimorphism in this species, 12 morphological characters were examined in 22 adult specimens (10 males and 12 females) from different localities in western Iran. Results showed that the number of sub-caudal scales, the relative tail length, and snout-vent length are different between sexes. Brief comparison of sexual dimorphism among species of Eryx was presented.

A. Nistri - One of the best experts on this subject based on the ideXlab platform.

Rajabizadeh - One of the best experts on this subject based on the ideXlab platform.

  • A new species of Eryx (Serpentes: Erycidae) from Iran.
    Zootaxa, 2020
    Co-Authors: Naeimeh Eskandarzadeh, Nasrullah Rastegar-pouyani, Eskandar Rastegar-pouyani, Rajabizadeh, Jamil Zargan, Ashkan Hajinourmohamadi, Roman Nazarov, Soheil Sami, Hossein Nabizadeh, Majid Navaian
    Abstract:

    We describe a new species of the genus Eryx Daudin, 1803 from southern Iran that is morphologically closely related to the Indian sand boa, E. johnii. The new species, Eryx sistanensis sp. nov. has a distribution range from Zabol in the Sistan Region to the southern parts of Sistan Baluchistan, as well as Hormozgan Province of Iran. Morphologically, E. sistanensis sp. nov. differs from E. johnii by having fewer dorsal scale rows at midbody and the tail tip is not as blunt as E. johnii. The genetic distance (p-distance) between the new species and the Indian sand boa is considerable (9.1% for cytb and 11.8% for COI).

  • Sexual Dimorphism in the Javelin Sand Boa, Eryx jaculus (Linnaeus, 1758) (Serpentes: Erycidae), from Western Iran
    Current Herpetology, 2018
    Co-Authors: Naeimeh Eskandarzadeh, Nasrullah Rastegar-pouyani, Eskandar Rastegar-pouyani, Fatemeh Todehdehghan, Rajabizadeh
    Abstract:

    The Javelin sand boa, Eryx jaculus, is one of the erycid snakes occurring in Iran. In order to investigate sexual dimorphism in this species, 12 morphological characters were examined in 22 adult specimens (10 males and 12 females) from different localities in western Iran. Results showed that the number of sub-caudal scales, the relative tail length, and snout-vent length are different between sexes. Brief comparison of sexual dimorphism among species of Eryx was presented.

  • Taxonomy and distribution of sand boas of the genus Eryx Daudin, 1803 (Serpentes: Erycidae) in Iran
    Zoology in the Middle East, 2017
    Co-Authors: Mohammad Zarrintab, Konstantin Milto, Naeimeh Eskandarzadeh, Bahman Zangi, Mohammad Jahan, Haji Gholi Kami, Nasrullah Rastegar-pouyani, Eskandar Rastegar-pouyani, Rajabizadeh
    Abstract:

    We review the distribution, morphology and taxonomic status of Eryx elegans, E. jaculus, E. miliaris, E. tataricus and E. johnii in Iran and examine four metric and 10 meristic characters of 94 specimens from different parts of the country. There are significant morphological differences between Eryx tataricus, E. jaculus and E. elegans, mainly in snout vent length, tail length, and number of ventrals, subcaudals and dorsal scales. Eryx jayakari and E. johnii can easily be distinguished based on their morphological traits and limited distribution in Iran. The occurrence of E. miliaris in Iran was not confirmed. The Iranian populations of Eryx jaculus are assigned to the subspecies E. j. turcicus. E. jaculus specimens from southwestern Iran had higher ventral scales than other populations, so evaluating their taxonomic status needs genetic studies in the future. A distribution map and a revised key to the genus Eryx in Iran are presented.

Günter P. Wagner - One of the best experts on this subject based on the ideXlab platform.

  • Did egg-laying boas break Dollo's law? Phylogenetic evidence for reversal to oviparity in sand boas (Eryx: Boidae).
    Evolution; international journal of organic evolution, 2009
    Co-Authors: Vincent J. Lynch, Günter P. Wagner
    Abstract:

    Re-evolution of lost complex morphological characters has been proposed for several characters, including insect wings, limbs, eyes in snakes, and digits in lizards, among others. There has also been much interest in whether the transition from oviparity to viviparity is reversible, particularly in squamate reptiles where the transition to viviparity has occurred more times than in any other lineage. Here, we present a phylogenetic analysis of boid snakes based on a concatenated multigene study of all genera of erycines, New and Old World boines, plus other groups thought to be closely related with boines such as monotypic species Calabaria and Casarea. We reconstruct ancestral parity mode on this phylogeny and present statistical evidence that oviparity reevolved in a species of Old World sand boa in the genus Eryx nearly 60 million years after the initial boid transition to viviparity. Remarkably, like other viviparous boas hatchlings of oviparous Eryx lack an egg-tooth providing independent evidence that oviparity is a derived state in these species.

Nasrullah Rastegar-pouyani - One of the best experts on this subject based on the ideXlab platform.

  • A new species of Eryx (Serpentes: Erycidae) from Iran.
    Zootaxa, 2020
    Co-Authors: Naeimeh Eskandarzadeh, Nasrullah Rastegar-pouyani, Eskandar Rastegar-pouyani, Rajabizadeh, Jamil Zargan, Ashkan Hajinourmohamadi, Roman Nazarov, Soheil Sami, Hossein Nabizadeh, Majid Navaian
    Abstract:

    We describe a new species of the genus Eryx Daudin, 1803 from southern Iran that is morphologically closely related to the Indian sand boa, E. johnii. The new species, Eryx sistanensis sp. nov. has a distribution range from Zabol in the Sistan Region to the southern parts of Sistan Baluchistan, as well as Hormozgan Province of Iran. Morphologically, E. sistanensis sp. nov. differs from E. johnii by having fewer dorsal scale rows at midbody and the tail tip is not as blunt as E. johnii. The genetic distance (p-distance) between the new species and the Indian sand boa is considerable (9.1% for cytb and 11.8% for COI).

  • Sexual Dimorphism in the Javelin Sand Boa, Eryx jaculus (Linnaeus, 1758) (Serpentes: Erycidae), from Western Iran
    Current Herpetology, 2018
    Co-Authors: Naeimeh Eskandarzadeh, Nasrullah Rastegar-pouyani, Eskandar Rastegar-pouyani, Fatemeh Todehdehghan, Rajabizadeh
    Abstract:

    The Javelin sand boa, Eryx jaculus, is one of the erycid snakes occurring in Iran. In order to investigate sexual dimorphism in this species, 12 morphological characters were examined in 22 adult specimens (10 males and 12 females) from different localities in western Iran. Results showed that the number of sub-caudal scales, the relative tail length, and snout-vent length are different between sexes. Brief comparison of sexual dimorphism among species of Eryx was presented.

  • On the Snake Fauna of Central and Southern Iraq and Some Zoogeographic Remarks
    Russian Journal of Herpetology, 2017
    Co-Authors: Fadhel Aabbas Rhadi, Nasrullah Rastegar-pouyani, Eskandar Rastegar-pouyani, Rihab Ghaleb Mohammed, Seyyed Saeed Hosseinian Yousefkhani
    Abstract:

    Central and southern Iraq in the area adjacent to and between the Tigris and Euphrates rivers, known as Mesopotamian plain. The Mesopotamian plain is a geological depression filled with rivers sediments which covers the central and southern part of Iraq. It is plain of the Tigris and Euphrates rivers, beings north of Baghdad and extends to southern Iraq, bordered by High Mountain in the east, desert from the west, and Persian Gulf from the south. An area of diverse physical features leading to rich biodiversity. An investigation of the status of snakes in central and southern Iraq was carried out from September 2013 to May 2015. A total of 138 specimens were collected and identified. Five families, 13 genera, and 17 species are represented, including Lyptotyphlopidae: Lyptotyphlops macrorhyncha (Jan, 1861); Boidae: Eryx jaculus jaculus (Linnaeus, 1758), Eryx jaculus familiaris Eichwald, 1831, Eryx cf. miliaris (Pallas, 1773); Lamprophiidae: Psammophis schokari (Forsskal, 1775), Malpolon insignitus (Geoffroy Saint-Hilaire, 1827), Rhagerhis moilensis (Reuss, 1834); Colubridae: Dolichophis cf. caspius (Gmelin, 1789), Dolichophis jugularis (Linnaeus 1785), Dolichophis cf. schmidti (Nikolsky, 1909), Spalerosophis diadema cliffordi (Schlegel, 1837), Platyceps ventromaculatus (Gray, 1834), Natrix tessellata (Laurenti, 1768); and Viperidae: Pseudocerastes persicus fieldi K. Schmidt, 1930, Macrovipera lebetina (Linnaeus, 1758), Cerastes gasperettii gasperettii Leviton et Anderson, 1967, and Echis carinatus Stemmler, 1969. According to the literature, 41 species of snakes were found in Iraq and according to the results of this survey 17 species and subspecies (~41%) of them occur in central and southern Iraq. Of these, 10 species are aglypha, 3 species opisthoglypha and 4 species proteroglypha. This study was conducted in 27 sampling localities and these project areas represent typical environment and climate of the central and southern regions of Iraq.

  • Taxonomy and distribution of sand boas of the genus Eryx Daudin, 1803 (Serpentes: Erycidae) in Iran
    Zoology in the Middle East, 2017
    Co-Authors: Mohammad Zarrintab, Konstantin Milto, Naeimeh Eskandarzadeh, Bahman Zangi, Mohammad Jahan, Haji Gholi Kami, Nasrullah Rastegar-pouyani, Eskandar Rastegar-pouyani, Rajabizadeh
    Abstract:

    We review the distribution, morphology and taxonomic status of Eryx elegans, E. jaculus, E. miliaris, E. tataricus and E. johnii in Iran and examine four metric and 10 meristic characters of 94 specimens from different parts of the country. There are significant morphological differences between Eryx tataricus, E. jaculus and E. elegans, mainly in snout vent length, tail length, and number of ventrals, subcaudals and dorsal scales. Eryx jayakari and E. johnii can easily be distinguished based on their morphological traits and limited distribution in Iran. The occurrence of E. miliaris in Iran was not confirmed. The Iranian populations of Eryx jaculus are assigned to the subspecies E. j. turcicus. E. jaculus specimens from southwestern Iran had higher ventral scales than other populations, so evaluating their taxonomic status needs genetic studies in the future. A distribution map and a revised key to the genus Eryx in Iran are presented.