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Karyological Investigation of Bufo variabilis (Anura: Bufonidae) Populations from Northwest and Southeast of Iran

Fatemeh Fakharzadeh, Jamshid Darvish, Haji Gholi Kami, Fereshteh Ghassemzadeh, Eskandar Rastegar-Pouyani

Abstract


The cytogenetic data of Bufo variabilis populations in northwest and southeast of Iran are rare, so, it is highly important to describe the karyotypic details of unexamined populations of variable toads from these regions. In this study, karyotype characteristics of seventeen specimens of B. variabilis were examined. Karyotypes consist of 2n = 22 chromosomes and could be arranged into two categories; the first group has 6 pairs of large chromosomes and the second one has 5 pairs of small chromosomes. These chromosomes are metacentric or submetacentric. Karyotypes of B. variabilis from northwest of Iran showed that 4th and 7th pairs of chromosomes are submetacentric while in variable toads from southeastern 4th and 9th pairs of chromosomes are submetacentric. Neither sexual heteromorphism, nor secondary constriction was observed in any pairs of chromosomes.

Keywords


Bufo variabilis; Bufo viridis subgroup; Karyotype; Diploid; Iran

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References


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