Chromosomal polymorphism of mandarin vole,Microtus mandarinus (Rodentia) |
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Authors: | Wang J X Zhao X F Deng Y Qi H Y Wang Z J |
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Affiliation: | Department of Biology, School of Life Sciences, Shandong University, Jinan, P.R. China. jxwang@sdu.edu.cn |
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Abstract: | The mitotic and meiotic chromosomes of mandarin vole, Microtus mandarinus Milne-Edwards, from Shandong Province of China were analyzed by conventional, G- and C-banding and Silver-staining techniques. We detected chromosomal polymorphism in the vole, exhibiting diploid chromosome numbers 2n = 48-50 and variable morphology of the 1st pair, one medium sized telocentric pair and the X chromosomes. Four types of karyotypes were revealed in the population. According to banding analysis, there were pericentric inversion, Robertsonian fusion and translocation in M. mandarinus karyotype evolution. The X displayed two different morphologies, which could be explained by prericentric inversion and a telocentric autosome translocation. |
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