Volume 39 Issue 5
Sep.  2018
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Masaharu Motokawa, Yi Wu, Masashi Harada, Yuta Shintaku, Xue-Long Jiang, Yu-Chun Li. Karyotypes of field mice of the genus Apodemus (Mammalia: Rodentia) from China. Zoological Research, 2018, 39(5): 348-355. doi: 10.24272/j.issn.2095-8137.2018.054
Citation: Masaharu Motokawa, Yi Wu, Masashi Harada, Yuta Shintaku, Xue-Long Jiang, Yu-Chun Li. Karyotypes of field mice of the genus Apodemus (Mammalia: Rodentia) from China. Zoological Research, 2018, 39(5): 348-355. doi: 10.24272/j.issn.2095-8137.2018.054

Karyotypes of field mice of the genus Apodemus (Mammalia: Rodentia) from China

doi: 10.24272/j.issn.2095-8137.2018.054
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  • Corresponding author: Masaharu Motokawa,Yu-Chun Li,E-mail:motokawa.masaharu.6m@kyoto-u.ac.jp; li_yuchun@sdu.edu.cn
  • Publish Date: 2018-09-18
  • Karyotypes of four Chinese species of field mice of the genus Apodemus were examined, including Apodemus chevrieri (diploid chromosome number, 2n=48, fundamental number of autosomal arms, FNa=56), A. draco (2n=48, FNa=48), A. ilex (2n=48, FNa=48), and A. latronum (2n=48, FNa=48). Karyotypes of A. chevrieri, A. draco, and A. ilex are reported here for the first time, providing useful information for their species taxonomy. Determining the karyotypes of all species of Apodemus in Asia, both in this and previous studies, provides a solid overview of the chromosome evolution and species differentiation of the genus in East Asia. In addition to allopatric speciation, chromosome rearrangements likely played an important role in the formation of the four Apodemus species groups as well as speciation within each group in East Asia. For example, increased centromeric heterochromatin in A. latronum may have contributed to the post-mating reproductive isolation from the A. draco-A. ilex-A. semotus clade.
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