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Revalidation of Myotis taiwanensis Ärnbäck-Christie-Linde 1908 and its molecular relationship with M. adversus (Horsfield 1824) (Vespertilionidae, Chiroptera)

100%

Han N. J. , Zhang J. S. , Reardon T. , Lin L. K. , Zhang J. P. , Zhang S. Y.

nr 2

A combined approach using molecular and morphological data has revealed that the taxon Myotis taiwanensis, which until now has been usually considered as a subspecies of Myotis adversus, should be reinstated as a full species, as originally described by Ärnbäck-Christie-Linde (1908) from Takao, Anping, Tainan, Formosa (= southern Taiwan). In our genetic analysis using two nuclear DNA segments of protein kinase C iota (PRKCI) and ubiquitin specific peptidase 9 (Usp9x), X-linked genes, together with two mitochondrial genes, i.e., nicotinamide adenine dinucleotide dehydrogenase subunit 1 (ND1) and cytochrome b (Cyt b), we demonstrate that M. taiwanensis is closely related to M. pilosus, and largely divergent from two subspecies of M. adversus. Our analysis further shows that M. taiwanensis differs considerably from M. adversus in external and dental features. New records of M. taiwanensis from Shandong and Anhui provinces in eastern China are presented.

Taxonomic study of the water shrews Chimarrogale himalayica and C. platycephala

100%

Motokawa M. , Harada M. , Apin L. , Yasuma S. , Yuan S. L. , Lin L. K.

Acta Theriologica

2006

tom 51

nr 2

215-223

We investigated karyotypes, mitochondrial cytochromeb gene sequences, and cranial morphometries of the water shrewsChimarrogale himalayica (Gray, 1842) andC. platycephala (Temminck, 1842) (Insectivora, Soricidae). Karyotypes ofC. himalayica from Taiwan andC. platycephala are 2n=52 and FNa=100. Autosomes consisted of 21 large-to-small metacentric or submetacentric pairs, and 4 medium-to-small subtelocentric pairs. The X and Y chromosomes were medium submetacentric and small acrocentric, respectively. The karyotypes ofC. himalayica andC. platycephala were very similar. Secondary constrictions were observed in the largest metacentric pair in both species. In the 930 base-pairs of the cytochromeb gene,C. himalayica from Taiwan andC. platycephala diverged with 9.46% sequence difference; each species diverged fromC. phaeura with more than 14% sequence difference. The two speciesC. himalayica andC. platycephala were well distinguished by morphometric characters, but three subspecies ofC. himalayica were not clearly separated. We suggest thatC. platycephala be treated as a valid species and separated fromC. himalayica in Taiwan.