Chromosome Database of Japanese Wild Mammals -- Japanese wild mammals

Glirulus japonicus (Thomas, 1905) : Japanese dormouse

2n=46, FN=?? Autosomes:;X; , Y;

Tsuchiya K (1979) A contribution to the chromosome study in Japanese mammals. Proceedings of the Japan Academy, Sereis B 55: 191-195.
Oshida T, Yanagawa H, Yoshida MC (1997) Chromosomal characterization of the Japanese dormouse Glirulus japonicus Schinz (Rodentia, Muscardinidae). Chromosome Science 1: 13-16.

Family MURIDAE

Eothenomys smithii (Thomas, 1905), synonym: E. kageus : Smith's red-backed vole

2n=56, FN=56 (60) Autosomes: A-26 pairs, M-1 pair (A-23 pairs, ST-3pairs, M-1pairs); X: large ST; Y: medium ST

Tsuchiya K (1979) A contribution to the chromosome study in Japanese mammals. Proceedings of the Japan Academy, Sereis B 55: 191-195.
Tsuchiya K (1981) On the chromosome variations in Japanese cricetid and murid rodents. Honyurui Kagaku [Mammalian Science] 42: 51-58 (in Japanese).
Tsuchiya K, Kimura Y, Minato S (1986) Comparison of cytogenetics in Japanese red-backed voles. In Conservation and Rehabitation of Oze, pp 97-42, Fukushima Prefectural Project Report on the Conservation of Special Plant Species and Their Habitats, Fukushima Prefecture (in Japanese).
Ando A, Shiraishi S, Harada M, Uchida TA (1988) A karyological study of two intraspecific taxa in Japanese Eothenomys (Mammalia: Rodentia). Journal of the Mammalogical Society of Japan 13: 93-104.
Ando A, Shiraishi S, Harada M, Uchida TA (1991) Variation of the X chromosome in the Smith's red-backed vole Eothenomys smithii. Journal of the Mammalogical Society of Japan 15: 83-90.
Yoshida I, Obara Y, Matsuoka N (1989) Phylogenetic relationships among seven taxa of the Japanese microtine voles revealed by karyological and biochemical techniques. Zoological Science 6: 409-420.
Iwasa MA, Obara Y, Kitahara E, Kimura Y (1999) Synaptonemal complex analysis in the XY chromosomes of six taxa of Clethrionomys and Eothenomys from Japan. Mammal Study 24: 103-113.
Iwasa MA, Tsuchiya K (2000) Karyological analysis of the Eothenomys sp. from Nagano City, central Honshu, Japan. Chromosome Science 4: 31-38.

Eothenomys andersoni (Thomas, 1905), synonym: E. niigatae & E. imaizumii: Anderson's red-backed vole

2n=56, FN=56 (60) Autosomes: A-26 pairs, M-1 pair (A-23 pairs, ST-3pairs, M-1pairs); X: large A, large ST; Y: small M

Hsu TC, Benirschke K (1974) Aschizomys niigatae and Aschizomys imaizumii. Atlas of Mammalian Chromosomes 8: folio 370.
Tsuchiya K (1977) Jpn J. Genet., 52: 482.
Tsuchiya K (1979) A contribution to the chromosome study in Japanese mammals. Proceedings of the Japan Academy, Sereis B 55: 191-195.
Tsuchiya K (1981) On the chromosome variations in Japanese cricetid and murid rodents. Honyurui Kagaku [Mammalian Science] 42: 51-58 (in Japanese).
Obara Y, Yoshida I (1985) A case of X-autosome translocation in the Japanese red-backed vole, Clethrionomys andersoni andersoni. Chromosome Information Service 39: 3-5.
Obara Y (1986) G-band homology between the Japanese red-backed vole, Clethrionomys a. andersoni and the grey red-backed vole, C. rufocanus. Chromosome Information Service 40: 7-9.
Tsuchiya K, Kimura Y, Minato S (1986) Comparison of cytogenetics in Japanese red-backed voles. In Conservation and Rehabitation of Oze, pp 97-42, Fukushima Prefectural Project Report on the Conservation of Special Plant Species and Their Habitats, Fukushima Prefecture (in Japanese).
Yoshida I, Obara Y, Matsuoka N (1989) Phylogenetic relationships among seven taxa of the Japanese microtine voles revealed by karyological and biochemical techniques. Zoological Science 6: 409-420.
Kitahara E, Harada M (1996) Karyological identity of Anderson's red-backed voles from the Kii peninsula and central Honshu in Japan. Bulletin of Forestry and Forest Product Research Institute 370: 21-30.
Iwasa MA, Obara Y, Kitahara E, Kimura Y (1999) Synaptonemal complex analysis in the XY chromosomes of six taxa of Clethrionomys and Eothenomys from Japan. Mammal Study 24: 103-113.
Iwasa MA, Tsuchiya K (2000) Karyological analysis of the Eothenomys sp. from Nagano City, central Honshu, Japan. Chromosome Science 4: 31-38.

Clethrionomys rufocanus (Sundevall, 1846): Gray red-backed vole

2n=56, FN=56 Autosomes: A-26 pairs, M-1 pair; X: large A; Y: small A

Tsuchiya K (1970) Classification of Japanese voles, rats and mice based on their karyotypes. Yama-to-Hakubutsukan 15: 3-4 (in Japanese).
Sonta S, Hayata I, Kobayashi T (1971) A chromosome survey of the red-backed mouse, Clethrionomys rufocanus bedfordiae, in Hokkaido, with a note of a karyotypically abnormal specimen. Proceedings of the Japan Academy 47: 679-682.
Tsuchiya K (1979) A contribution to the chromosome study in Japanese mammals. Proceedings of the Japan Academy, Sereis B 55: 191-195.
Tsuchiya K (1981) On the chromosome variations in Japanese cricetid and murid rodents. Honyurui Kagaku [Mammalian Science] 42: 51-58 (in Japanese).
Obara Y (1986) G-band homology between the Japanese red-backed vole, Clethrionomys a. andersoni and the grey red-backed vole, C. rufocanus. Chromosome Information Service 40: 7-9.
Kashiwabara K, Onoyama K (1988) Karyotypes and G-banding patterns of the red-backed voles, Clethrionomys montanus and C. rufocanus bedfordiae (Rodentia, Microtinae). Journal of the Mammalogical Society of Japan 13: 33-41.
Yoshida I, Obara Y, Matsuoka N (1989) Phylogenetic relationships among seven taxa of the Japanese microtine voles revealed by karyological and biochemical techniques. Zoological Science 6: 409-420.
Iwasa MA, Obara Y, Kitahara E, Kimura Y (1999) Synaptonemal complex analysis in the XY chromosomes of six taxa of Clethrionomys and Eothenomys from Japan. Mammal Study 24: 103-113.

Clethrionomys rex Imaizumi, 1971, synonym: C. montanus: Dark red-backed vole

2n=56, FN=56 Autosomes: A-26 pairs, M-1 pair; X: large A; Y: small A

Tsuchiya K (1970) Classification of Japanese voles, rats and mice based on their karyotypes. Yama-to-Hakubutsukan 15: 3-4 (in Japanese).
Tsuchiya K (1979) A contribution to the chromosome study in Japanese mammals. Proceedings of the Japan Academy, Sereis B 55: 191-195.
Tsuchiya K (1981) On the chromosome variations in Japanese cricetid and murid rodents. Honyurui Kagaku [Mammalian Science] 42: 51-58 (in Japanese).
Kashiwabara K, Onoyama K (1988) Karyotypes and G-banding patterns of the red-backed voles, Clethrionomys montanus and C. rufocanus bedfordiae (Rodentia, Microtinae). Journal of the Mammalogical Society of Japan 13: 33-41.
Yoshida I, Obara Y, Matsuoka N (1989) Phylogenetic relationships among seven taxa of the Japanese microtine voles revealed by karyological and biochemical techniques. Zoological Science 6: 409-420.
Sokolov VY, Aniskin VM, Serbenyuk MA (1990) Comparative cytogenetics of 6 species of the Genus Clethrionomys (Rodentia, Microtinae). Zoologichaeskyi Zhurnal 69: 145-151 (in Russian with English summary).

Clethrionomys rutilus (Pallas, 1778) : Northern red-backed vole

2n=56, FN=56 Autosomes: A-26 pairs, M-1 pair; X: large A; Y: small M

Tsuchiya K (1970) Classification of Japanese voles, rats and mice based on their karyotypes. Yama-to-Hakubutsukan 15: 3-4 (in Japanese).
Tsuchiya K (1979) A contribution to the chromosome study in Japanese mammals. Proceedings of the Japan Academy, Sereis B 55: 191-195.
Tsuchiya K (1981) On the chromosome variations in Japanese cricetid and murid rodents. Honyurui Kagaku [Mammalian Science] 42: 51-58 (in Japanese).
Yoshida I, Obara Y, Matsuoka N (1989) Phylogenetic relationships among seven taxa of the Japanese microtine voles revealed by karyological and biochemical techniques. Zoological Science 6: 409-420.
Obara Y, Kusakabe H, Miyakoshi K, Kawada S (1995) Revised karyotypes of the Japanese northern red-backed vole, Clethrionomys rutilus mikado. Journal of the Mammalogical Society of Japan 20: 125-133.
Iwasa MA, Obara Y, Kitahara E, Kimura Y (1999) Synaptonemal complex analysis in the XY chromosomes of six taxa of Clethrionomys and Eothenomys from Japan. Mammal Study 24: 103-113.

Microtus montebelli Milne-Edwards, 1872: Japanese field vole

2n=30, FN=56 Autosomes: M-11 pairs, SM-2 pairs, ST-1 pair; X: medium M; Y: small A

Tsuchiya K, Yosida TH (1971) Chromosome survey of small mammals in Japan. Annual Report of National Institute of Genetics, Japan 21: 54-55.
Tsuchiya K (1979) A contribution to the chromosome study in Japanese mammals. Proceedings of the Japan Academy, Sereis B 55: 191-195.
Tsuchiya K (1981) On the chromosome variations in Japanese cricetid and murid rodents. Honyurui Kagaku [Mammalian Science] 42: 51-58 (in Japanese).
Yamakage K, Nakayashiki N, Hasegawa J, Obara Y (1985) G-, C- and N-banding patterns on the chromosomes of the Japanese grass vole, Microtus montebelli montebelli, with special attention to the karyotypic comparison with the root vole, M. oeconomus. Journal of the Mammalogical Society of Japan 10: 209-220.
Iwasa M, Obara Y (1995) Presence of XY-synapsis in the Japanese grass vole, Microtus montebelli (Rodentia; Microtinae). Chromosome Information Service 59: 21-23.
Borodin PM, Rogacheva MB, Koyasu K, Fukuta K, Mekada K, Oda SI (1997) Pattern of X-Y chromosome pairing in the Japanese field vole, Microtus montebelli. Genome 40: 829-833.

Micromys minutus (Pallas, 1771) : Harvest mouse

2n=48, FN=54 Autosomes: A-19 pairs, M-4 pairs; X: large A; Y: small A

Tsuchiya K, Yosida TH (1971) Chromosome survey of small mammals in Japan. Annual Report of National Institute of Genetics, Japan 21: 54-55.
Tsuchiya K (1979) A contribution to the chromosome study in Japanese mammals. Proceedings of the Japan Academy, Sereis B 55: 191-195.
Tsuchiya K (1981) On the chromosome variations in Japanese cricetid and murid rodents. Honyurui Kagaku [Mammalian Science] 42: 51-58 (in Japanese).

Apodemus peninsulae (Thomas, 1907) : East Asiatic wood mouse

2n=48-(with B chromosomes), FN=46 Autosomes: A-22 pairs; X: large A; Y: small A

Tsuchiya K, Yosida TH (1971) Chromosome survey of small mammals in Japan. Annual Report of National Institute of Genetics, Japan 21: 54-55.
Hayata I, Shimba H, Kobayashi T, Makino S (1970) Preliminary accounts on the chromosomal polymorphism in the field mouse, Apodemus giliacus, a new form from Hokkaido. Proceedings of the Japan Academy 46: 567-571.
Hayata I (1973) Chromosomal polymorphism caused by supernumerary chromosomes in the field mouse, Apodemus giliacus. Chromosoma 42: 403-414.
Tsuchiya K (1979) A contribution to the chromosome study in Japanese mammals. Proceedings of the Japan Academy, Sereis B 55: 191-195.
Tsuchiya K (1981) On the chromosome variations in Japanese cricetid and murid rodents. Honyurui Kagaku [Mammalian Science] 42: 51-58 (in Japanese).
Abe S, Han SH, Kojima H, Ishibashi Y, Yoshida MC (1997) Differential staining profiles of B-chromosomes in the East-Asiatic wood mouse Apodemus peninsulae. Chromosome Science 1: 7-12.
Trifonov VA, Perelman PL, Kawada SI, Iwasa MA, Oda SI, Graphodatsky AS (2002) Complex structure of B-chromosomes in two mammalian species: Apodemus peninsulae (Rodentia) and Nyctereutes procyonoides (Carnivora). Chromosome Research 10: 109-116.

Apodemus argenteus (Temminck, 1844): Small Japanese filed mouse

2n=46, FN=48 Autosomes: M-2 pairs, A-20 pairs; X: large ST; Y: small A

Tsuchiya K, Yosida TH (1971) Chromosome survey of small mammals in Japan. Annual Report of National Institute of Genetics, Japan 21: 54-55.
Yoshida MC, Sasaki M, Oshimura M (1975) Karyotype and heterochromatin pattern of the field mouse, Apodemus argenteus Temminck. Genetica 45: 397-403.
Tsuchiya K (1979) A contribution to the chromosome study in Japanese mammals. Proceedings of the Japan Academy, Sereis B 55: 191-195.
Tsuchiya K (1981) On the chromosome variations in Japanese cricetid and murid rodents. Honyurui Kagaku [Mammalian Science] 42: 51-58 (in Japanese).
Obara Y, Sasaki S (1997) Fluorescent approaches on the origin of B chromosomes of Apodemus argenteus hokkaidi. Chromosome Science 1: 1-5.
Obara Y, Sasaki S, Igarashi Y (1997) Delayed response of QM- and DA/DAPI-fluorescence in C-heterochromatin of the small Japanese field mouse, Apodemus argenteus. Zoological Science 14: 57-64.
Nomura T, Saigusa K, Fukushi D, Obara Y, Kuro-o M (2002) Restriction endonuclease banding and photooxidation studies of delayed QM-fluorescence of the C-heterochromatin of the small Japanese field mouse, Apodemus argenteus. Chromosome Science 5: 123-131.

Apodemus speciosus (Temminck, 1844): Large Japanese field mouse

2n=46, 47, 48, FN=54 Autosomes: (Eastern population: 2n=46) M-1 pair, SM-3 pairs, ST-1 pair, A-17 pairs; X: large A; Y: small A Autosomes: (Hybrid zone: 2n=47); M-1 pair, SM-2 pairs+1, ST-1 pair, A-17 pairs+2; X: large A; Y: small A Autosomes: (Western population: 2n=48); M-1 pair, SM-2 pairs, ST-1 pair, A-19 pairs; X: large A; Y: small A

Shimba H, Kobayashi T (1966) A Robertsonian type polymorphism of the chromosomes in the field mouse, Apodemus speciosus. Japanese Journal of Genetics 44: 177-122.
Tsuchiya K, Yosida TH (1971) Chromosome survey of small mammals in Japan. Annual Report of National Institute of Genetics, Japan 21: 54-55.
Tsuchiya K, Moriwaki K, Yosida TH (1973) Cytogenetical survey in wild population of Japanese wood mouse, Apodemus speciosus and its breeding. Experimetal Animals 22: 221-229.
Tsuchiya K (1974) Cytological and biochemical studies of Apodemus speciosus group in Japan. Journal of the Mammalogical Society of Japan 6: 67-87.
Tsuchiya K (1979) A contribution to the chromosome study in Japanese mammals. Proceedings of the Japan Academy, Sereis B 55: 191-195.
Tsuchiya K (1981) On the chromosome variations in Japanese cricetid and murid rodents. Honyurui Kagaku [Mammalian Science] 42: 51-58 (in Japanese).
Saitoh M, Obara Y (1986) Chromosome banding patterns in five intraspecific taxa of the large Japanese field mouse, Apodemus speciosus. Zoological Science 3: 785-792.
Saitoh M, Obara Y (1988) Meiotic studies of interracial hybrids from the wild population of the large Japanese field mouse, Apodemus speciosus speciosus. Zoological Science 5: 815-822.

Tokudaia osimensis (Abe, 1933): Ryukyu spiny rat

2n=25, 44, 45 Autosomes: (Amamioshima popul.: 2n=25); M-4 pairs, SM-3 pairs, ST-4 pairs, A-1 pair; X: small SM; Y: 0 Autosomes: (Okinawajima popul.: 2n=44); SM-4 pairs, A-17 pairs; X: large M; Y: large M Autosomes: (Tokunoshima popul.: 2n=45); SM-3 pairs, ST-6 pairs, A-12 pairs; X: large ST; Y: 0

Tsuchiya K, Yosida TH (1971) Chromosome survey of small mammals in Japan. Annual Report of National Institute of Genetics, Japan 21: 54-55.
Honda T, Suzuki H, Itoh M (1977) An unusual sex chromosome constitution found in the Amami spinous country-rat, Tokudai osimensis osimensis. Japanese Journal of Genetics 52: 247-249.
Honda T, Suzuki H, Itoh M, Hayashi K (1978) Karyotypic differences of the Amami spinous country-rats, Tokudai osimensis osimensis obtained from two neighboring islands. Japanese Journal of Genetics 53: 297-299.
Tsuchiya K (1979) A contribution to the chromosome study in Japanese mammals. Proceedings of the Japan Academy, Sereis B 55: 191-195.
Tsuchiya K (1981) On the chromosome variations in Japanese cricetid and murid rodents. Honyurui Kagaku [Mammalian Science] 42: 51-58 (in Japanese).
Tsuchiya K, Wakana S, Suzuki H, Hattori S, Hayashi Y (1989) Taxonomic study of Tokudaia (Rodentia: Muridae): I. Genetic differentiation. Bulletin of National Science of Museum 22: 227-234 (in Japanese with English abstract).
Sutou S, Mitsui Y, Tsuchiya K (2001) Sex determination without the Y chromosome in two Japanese rodents Tokudaia osimensis osimensis and Tokudaia osimensis spp. Mammalian Genome 12: 17-21.
Arakawa Y, Nishida-Umehara C, Matsuda Y, Sutou S, Suzuki H (2002) X-chromosomal localization of mammalian Y-linked genes in two XO species of the Ryukyu spiny rat. Cytogenetics and Genome Research 99: 303-309.

Dirlothrix legata (Thomas, 1906) : Ryukyu long-haired rat

2n=44, FN=?? Autosomes: M-4 pairs, SM-1 pair, A-17 pairs; X;??

Tsuchiya K, Yosida TH (1971) Chromosome survey of small mammals in Japan. Annual Report of National Institute of Genetics, Japan 21: 54-55.
Tsuchiya K (1979) A contribution to the chromosome study in Japanese mammals. Proceedings of the Japan Academy, Sereis B 55: 191-195.
Tsuchiya K (1981) On the chromosome variations in Japanese cricetid and murid rodents. Honyurui Kagaku [Mammalian Science] 42: 51-58 (in Japanese).

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