15 Result(s)
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Article
Ryuichi Masuda
Zoology
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Article
Phylogeography of the stone marten (Martes foina: Mustelidae: Mammalia) in Eurasia, based on a mitochondrial DNA analysis
The stone marten (Martes foina) is a small carnivore distributed from Europe to Central Asia. To investigate its phylogeography, we sequenced part of the mitochondrial control-region (485 bp) for 30 individuals f...
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Genetic diversity and phylogeography of urban hedgehogs (Erinaceus europaeus) around Helsinki, Finland, revealed by mitochondrial DNA and microsatellite analyses
The European hedgehog (Erinaceus europaeus) is widely distributed in Europe, from Iberia and Italy to Scandinavia, and in New Zealand. They inhabit a wide range of environments, from natural habitats to urban are...
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Evolution of MHC class I genes in Japanese and Russian raccoon dogs, Nyctereutes procyonoides (Carnivora: Canidae)
Major histocompatibility complex (MHC) genes have been widely studied to assess the immunological fitness and evolutionary adaptation of animal populations. Among the Canidae, the raccoon dog’s adventurous nat...
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Phylogenetic relationships of ancient brown bears (Ursus arctos) on Sakhalin Island, revealed by APLP and PCR-direct sequencing analyses of mitochondrial DNA
To investigate the phylogenetic relationships of brown bears (Ursus arctos) on Sakhalin Island in the Far East, mitochondrial DNA (mtDNA) sequences were analyzed for 27 ancient and five contemporary specimens of ...
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Genetic diversity and evolution of the MHC class II DRB gene in the Japanese marten, Martes melampus (Carnivora: Mustelidae)
High polymorphism in major histocompatibility complex (MHC) genes plays an essential role in the adaptive immune system of vertebrates for defense against various pathogens. To further understand the evolution...
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Mitochondrial haplogrou** of the ancient brown bears (Ursus arctos) in Bulgaria, revealed by the APLP method
In order to investigate the detailed zoogeographical history of brown bears (Ursus arctos) in Bulgaria and their relationships with populations in neighboring regions of Europe and Asia, the amplified product len...
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Hybridization between the European and Asian badgers (Meles, Carnivora) in the Volga-Kama region, revealed by analyses of maternally, paternally and biparentally inherited genes
Two closely related species of Meles (Carnivora), the European badger (M. meles) and the Asian badger (M. leucurus), are distributed allopatrically in continental Eurasia but show a narrow contact zone around the...
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Sex-biased natal dispersal in Hokkaido brown bears revealed through mitochondrial DNA analysis
Understanding natal dispersal patterns is fundamental in the ecology and conservation biology of large wild carnivores. In this study, we used two approaches to determine genetic variation and dispersal patter...
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Genetic diversity of MHC class II DRB alleles in the continental and Japanese populations of the sable Martes zibellina (Mustelidae, Carnivora, Mammalia)
The sable (Martes zibellina) is a medium-sized mustelid inhabiting forest environments in Siberia, northern China, the Korean Peninsula, and Hokkaido Island, Japan. To further understand the molecular evolution o...
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Open AccessPaternal phylogeographic structure of the brown bear (Ursus arctos) in northeastern Asia and the effect of male-mediated gene flow to insular populations
Sex-biased dispersal is widespread among mammals, including the brown bear (Ursus arctos). Previous phylogeographic studies of the brown bear based on maternally inherited mitochondrial DNA have shown intraspecif...
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Open AccessRecent fragmentation of the endangered Blakiston’s fish owl (Bubo blakistoni) population on Hokkaido Island, Northern Japan, Revealed by Mitochondrial DNA and Microsatellite Analyses
Blakiston’s fish owl (Bubo blakistoni) was previously widespread on Hokkaido Island, Japan, but is now distributed only in limited forest areas. The population size on Hokkaido decreased during the 20th century d...
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Open AccessSpatial and temporal variation at major histocompatibility complex class IIB genes in the endangered Blakiston’s fish owl
Quantifying intraspecific genetic variation in functionally important genes, such as those of the major histocompatibility complex (MHC), is important in the establishment of conservation plans for endangered ...
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Article
Temporal change in the spatial genetic structure of a sika deer population with an expanding distribution range over a 15-year period
Since the 1980s, the sika deer (Cervus nippon Temminck, 1838) population of Hokkaido, Japan, has grown, resulting in range expansion. To assess the effects of this range expansion on the spatial genetic structure...
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Phylogenetic relationships among deer in China derived from mitochondrial DNA cytochromeb sequences
The phylogenetic relationships of Cervidae and Moschidae were examined using partial sequence data of mitochondrial DNA (mtDNA) cytochromeb. Ten new sequences were obtained for six species of Cervidae and Moschid...
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Biogeographical history of northeastern Asiatic soricine shrews (insectivora, mammalia)
A hypothetical biogeographical history of northeastern Asiatic soricine shrews in the late Quaternary was developed by integrating their present distributions, fossil records, a hypothetical phylogeny, and geo...
