Reconsideration of the Karyological Relationship between Two Japanese Species of Shrew-moles, Dymecodon pilirostris and Urotrichus talpoides(Taxonomy)
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概要
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Details of the karyological relationship between the lesser Japanese shrew-mole Dymecodon pilirostris (2n = 34) and the greater Japanese shrew-mole Urotrichus talpoides (2n = 34) were examined by five differential-staining techniques, namely, G-, C-, NOR-, Q- and CMA-banding. Staining revealed that thirteen autosomal pairs and the sex chromosomes of the two species exhibited strong homology in terms of banding patterns. The remaining three autosomal pairs, nos. 13, 14 and 15, exhibited distinct interspecific differences both in banding patterns and in the morphology of the respective chromosomes. These interspecific differences can be explained by the presence or absence of an unusual (G-, C-, NOR- and Q-band-negative, but CMA-band-positive) region of chromatin, by the pericentric inversion inv (14) (p13q31), and by duplication of C-heterochromatin, respectively. It has been suggested that the unusual chromatin found in U. talpoides might contain highly repetitive GC-rich sequences, even though its staining properties appear to be unique and are unlike those of so-called C-heterochromatin. Detailed pair-matching analyses of banded chromosomes led us to revise the relationship, proposed previously by Hamada and Yosida, between D. pilirostris and U. talpoides (Hamada and Yosida, La Kromosomo II-20, 585-590, 1980).
- 社団法人日本動物学会の論文
- 1999-02-15
著者
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川田 伸一郎
国立科学博物館動物研究部
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小原 良孝
弘前大 農生
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OBARA Yoshitaka
Department of Ophthalmology, Koshigaya Hospital, Dokkyo University School of Medicine
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KAWADA Shin-ichiro
Department of Biology, Faculty of Science, Hirosaki University
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Obara Yoshitaka
Department Of Biofunctional Science Faculty Of Agriculture And Life Science Hirosaki University
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小原 良孝
弘前大学農学生命科学部生物機能科学教室
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川田 伸一郎
Department Of Zoology National Museum Of Nature And Science
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川田 伸一郎
名古屋大学大学院生命農学研究科動物管理学研究室
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Obara Yoshitaka
Fac. Agric. Life Sci. Hirosaki Univ.
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Obara Yoshitaka
Dept. Biol. Fac. Sci. Hirosaki Univ.
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Obara Yoshitaka
Department Of Biology Faculty Of Science Hirosaki University
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Kawada Shinichiro
Department Of Zoology National Museum Of Nature And Science
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Kawada Shin-ichiro
Dept. Biol. Fac. Sci. Hirosaki Univ.
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Kawada Shin-ichiro
Nagoya Univ.:(present)national Science Museum
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Kawada Shin-ichiro
Department Of Zoology National Science Museum
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Kawada Shin-ichiro
Department Of Biology Faculty Of Science Hirosaki University
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Kawada Shin-ichoro
Laboratory Of Animal Management And Resources Graduate School Of Bio-agricultural Sciences Nagoya Un
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Kawada Shin-ichiro
Department Of Zoology National Museum Of Nature And Science
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OBARA Yoshitaka
Deparment of Biology, Faculty of Science, Hirosaki University
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