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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->2016 Vol.35 No.3

Chromosomal Karyotype Characteristics and Systematic Cluster Analysis of Phrynocephalus guinanensis
Author of the article:LI Jiasheng, TONG Haojie, ZHANG Kailong, YANG Kun, LUO Yuanyuan, JIN Yuanting*
Author's Workplace:China Jiliang University, Hangzhou 310018, China
Key Words:Phrynocephalus guinanensis; karyotype; cluster analysis; phylogenetic divergence
Abstract:Phrynocephalus guinanensis was a newly named species and phenotypically different from P. putjatia and P. vlangalii. Recent molecular systematic analysis on Phrynocephalus suggested that P. guinanensis was an invalid species and its population was clustered into a subclade of P. putjatia on the tree topology. As a basic method of cellular genetics research, chromosomal karyotype analysis has been an alternative effective way for studying the modern comprehensive classification. In this study, the medullary cell of P. guinanensis was used to prepare chromosome for karyotype analysis and the chromosomal karyotype characteristics were used to investigate the cluster relationship among P. guinanensis and other Phrynocephalus species. The results showed that chromosomal karyotype of P. guinanensis could be expressed as 2n=24I+24m, which had twelve pairs of macrochromosomes belonging to end type and twelve pairs of microchromosomes. No heteromorphic sex chromosomes were observed. Based on the result of cluster analysis of eleven Phrynocephalus populations distributed in Qinghai province, P. guinanensis and all P. putjatia specimens were clustered as a sister clade, and this also indicated that P. guinanensis was an invalid species with the most closely evolutionary relationship with P. putjatia.
2016,(35): 391-394,399 收稿日期:2015-12-31
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