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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 39, No. 5, 2018, pp. 348-355
Bioline Code: zr18033
Full paper language: English
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 39, No. 5, 2018, pp. 348-355

 en Karyotypes of field mice of the genus Apodemus check for this species in other resources (Mammalia: Rodentia) from China
Motokawa, Masaharu; Wu, Yi; Harada, Masashi; Shintaku, Yuta; Jiang, Xue-Long & Li, Yu-Chun

Abstract

Karyotypes of four Chinese species of field mice of the genus Apodemus were examined, including Apodemus chevrieri check for this species in other resources (diploid chromosome number, 2n=48, fundamental number of autosomal arms, FNa=56), A. draco check for this species in other resources (2n=48, FNa=48), A. ilex check for this species in other resources (2n=48, FNa=48), and A. latronum check for this species in other resources (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 check for this species in other resources clade.

Keywords
Karyotype; Chromosome evolution; Speciation; Taxonomy; Field mice

 
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