The Experts below are selected from a list of 12525 Experts worldwide ranked by ideXlab platform

Michihiro C Yoshida - One of the best experts on this subject based on the ideXlab platform.

  • genetic variation and population structure of the japanese sika deer cervus nippon in hokkaido island based on mitochondrial d loop sequences
    Molecular Ecology, 1998
    Co-Authors: Junko Nagata, Ryuichi Masuda, Koichi Kaji, M Kaneko, Michihiro C Yoshida
    Abstract:

    Mitochondrial DNA (mtDNA) D-loop region sequences (602 bp) from 141 samples of the sika deer Cervus nippon collected from Hokkaido Island of Japan were investigated to elucidate population genetic structure. All animals possessed seven repeat units (38 or 39 bp each) in the sequences. Comparison of the 602-bp sequences showed four sites of transitional mutations (A↔G or C↔T). Based on combination of the substitutions, six D-loop haplotypes (a–f types) were identified in the Hokkaido population, suggesting the occurrence of at least six maternal lineages. Distribution maps of the haplotypes constructed using the Geographic Information System showed that the distribution patterns differed from haplotype to haplotype. In particular, distribution of the major three types (a-, b-, and c-types) almost overlapped with three main areas of Coniferous Forests in Hokkaido. These results suggest that expansion of the sika deer population could have occurred through the habitat of Coniferous Forests after the historical bottleneck in Hokkaido.

  • genetic variation and population structure of the japanese sika deer cervus nippon in hokkaido island based on mitochondrial d loop sequences
    Molecular Ecology, 1998
    Co-Authors: Junko Nagata, Ryuichi Masuda, Koichi Kaji, M Kaneko, Michihiro C Yoshida
    Abstract:

    Mitochondrial DNA (mtDNA) D-loop region sequences (602 bp) from 141 samples of the sika deer Cervus nippon collected from Hokkaido Island of Japan were investigated to elucidate population genetic structure. All animals possessed seven repeat units (38 or 39 bp each) in the sequences. Comparison of the 602-bp sequences showed four sites of transitional mutations (A G or C T). Based on combination of the substitutions, six D-loop haplotypes (a-f types) were identified in the Hokkaido population, suggesting the occurrence of at least six maternal lineages. Distribution maps of the haplotypes constructed using the Geographic Information System showed that the distribution of the major three types differed from haplotype to haplotype. In particular, distribution of the major three types (a-, b-, and c-types) almost overlapped with three main areas of Coniferous Forests in Hokkaido. These results suggest that expansion of the sika deer population could have occurred through the habitat of Coniferous Forests after the historical bottleneck in Hokkaido.

Kai Song - One of the best experts on this subject based on the ideXlab platform.

  • genomic analysis of demographic history and ecological niche modeling in the endangered chinese grouse tetrastes sewerzowi
    BMC Genomics, 2020
    Co-Authors: Kai Song, Bin Gao, Peter Halvarsson, Yun Fang, Ying Xin Jiang, Yuehua Sun, Jacob Hoglund
    Abstract:

    The Quaternary had worldwide consequences in forming the contemporary diversity of many populations, species and communities, which is characterized by marked climatic oscillations between glacial and interglacial periods. The origin and evolution of biodiversity in mountainous areas are highly dependent on historical orogenesis and associated climatic changes. The Chinese grouse Tetrastes sewerzowi is a forest-dwelling species endemic to the mountains to the east of the Qinghai–Tibet Plateau, which has been listed as Near Threatened with a decreasing trend by the IUCN because of ongoing deforestation and fragmentation of Coniferous Forests. It is important to place current population status into a broader ecological and evolutionary context to understand their demographic history. Analyses of the Chinese Grouse genome revealed fluctuations throughout the Pleistocene in effective population size. Populations decreased during early to middle Pleistocene but showed an expansion during late Pleistocene which was then followed by a sharp decline during the last glacial maximum (LGM). Ecological niche modeling indicated that a suitable habitat shift between high altitude regions to low altitude regions was due to a changing climate. This result parallels patterns of population size change in Chinese Grouse estimated from PSMC modelling, which suggested an expansion in population size from the last interglacial period (LIG) and then a peak and a bottleneck occurring at the last glacial maximum (LGM). Furthermore, the present-day distribution of Chinese Grouse is greatly reduced and fragmented. It will likely become even more fragmented in the future since Coniferous forest cover is threatened in the region of their distribution and the availability of such habitat restricts their ecological niche. The Chinese Grouse have experienced substantial population size changes from the beginning to the LIG and reached a peak before the LGM. A sharp decrease and bottleneck occurred during the LGM, when the Coniferous Forests were subjected to extensive loss. The results inferred from the whole genome sequencing and species distribution models both support historical population fluctuations. The distribution of the Chinese Grouse is strongly dependent on the Coniferous forest cover. To protect the fragmented Coniferous Forests is an essential action to protect the Chinese Grouse.

Jacob Hoglund - One of the best experts on this subject based on the ideXlab platform.

  • genomic analysis of demographic history and ecological niche modeling in the endangered chinese grouse tetrastes sewerzowi
    BMC Genomics, 2020
    Co-Authors: Kai Song, Bin Gao, Peter Halvarsson, Yun Fang, Ying Xin Jiang, Yuehua Sun, Jacob Hoglund
    Abstract:

    The Quaternary had worldwide consequences in forming the contemporary diversity of many populations, species and communities, which is characterized by marked climatic oscillations between glacial and interglacial periods. The origin and evolution of biodiversity in mountainous areas are highly dependent on historical orogenesis and associated climatic changes. The Chinese grouse Tetrastes sewerzowi is a forest-dwelling species endemic to the mountains to the east of the Qinghai–Tibet Plateau, which has been listed as Near Threatened with a decreasing trend by the IUCN because of ongoing deforestation and fragmentation of Coniferous Forests. It is important to place current population status into a broader ecological and evolutionary context to understand their demographic history. Analyses of the Chinese Grouse genome revealed fluctuations throughout the Pleistocene in effective population size. Populations decreased during early to middle Pleistocene but showed an expansion during late Pleistocene which was then followed by a sharp decline during the last glacial maximum (LGM). Ecological niche modeling indicated that a suitable habitat shift between high altitude regions to low altitude regions was due to a changing climate. This result parallels patterns of population size change in Chinese Grouse estimated from PSMC modelling, which suggested an expansion in population size from the last interglacial period (LIG) and then a peak and a bottleneck occurring at the last glacial maximum (LGM). Furthermore, the present-day distribution of Chinese Grouse is greatly reduced and fragmented. It will likely become even more fragmented in the future since Coniferous forest cover is threatened in the region of their distribution and the availability of such habitat restricts their ecological niche. The Chinese Grouse have experienced substantial population size changes from the beginning to the LIG and reached a peak before the LGM. A sharp decrease and bottleneck occurred during the LGM, when the Coniferous Forests were subjected to extensive loss. The results inferred from the whole genome sequencing and species distribution models both support historical population fluctuations. The distribution of the Chinese Grouse is strongly dependent on the Coniferous forest cover. To protect the fragmented Coniferous Forests is an essential action to protect the Chinese Grouse.

Peter Halvarsson - One of the best experts on this subject based on the ideXlab platform.

  • genomic analysis of demographic history and ecological niche modeling in the endangered chinese grouse tetrastes sewerzowi
    BMC Genomics, 2020
    Co-Authors: Kai Song, Bin Gao, Peter Halvarsson, Yun Fang, Ying Xin Jiang, Yuehua Sun, Jacob Hoglund
    Abstract:

    The Quaternary had worldwide consequences in forming the contemporary diversity of many populations, species and communities, which is characterized by marked climatic oscillations between glacial and interglacial periods. The origin and evolution of biodiversity in mountainous areas are highly dependent on historical orogenesis and associated climatic changes. The Chinese grouse Tetrastes sewerzowi is a forest-dwelling species endemic to the mountains to the east of the Qinghai–Tibet Plateau, which has been listed as Near Threatened with a decreasing trend by the IUCN because of ongoing deforestation and fragmentation of Coniferous Forests. It is important to place current population status into a broader ecological and evolutionary context to understand their demographic history. Analyses of the Chinese Grouse genome revealed fluctuations throughout the Pleistocene in effective population size. Populations decreased during early to middle Pleistocene but showed an expansion during late Pleistocene which was then followed by a sharp decline during the last glacial maximum (LGM). Ecological niche modeling indicated that a suitable habitat shift between high altitude regions to low altitude regions was due to a changing climate. This result parallels patterns of population size change in Chinese Grouse estimated from PSMC modelling, which suggested an expansion in population size from the last interglacial period (LIG) and then a peak and a bottleneck occurring at the last glacial maximum (LGM). Furthermore, the present-day distribution of Chinese Grouse is greatly reduced and fragmented. It will likely become even more fragmented in the future since Coniferous forest cover is threatened in the region of their distribution and the availability of such habitat restricts their ecological niche. The Chinese Grouse have experienced substantial population size changes from the beginning to the LIG and reached a peak before the LGM. A sharp decrease and bottleneck occurred during the LGM, when the Coniferous Forests were subjected to extensive loss. The results inferred from the whole genome sequencing and species distribution models both support historical population fluctuations. The distribution of the Chinese Grouse is strongly dependent on the Coniferous forest cover. To protect the fragmented Coniferous Forests is an essential action to protect the Chinese Grouse.

Junko Nagata - One of the best experts on this subject based on the ideXlab platform.

  • genetic variation and population structure of the japanese sika deer cervus nippon in hokkaido island based on mitochondrial d loop sequences
    Molecular Ecology, 1998
    Co-Authors: Junko Nagata, Ryuichi Masuda, Koichi Kaji, M Kaneko, Michihiro C Yoshida
    Abstract:

    Mitochondrial DNA (mtDNA) D-loop region sequences (602 bp) from 141 samples of the sika deer Cervus nippon collected from Hokkaido Island of Japan were investigated to elucidate population genetic structure. All animals possessed seven repeat units (38 or 39 bp each) in the sequences. Comparison of the 602-bp sequences showed four sites of transitional mutations (A↔G or C↔T). Based on combination of the substitutions, six D-loop haplotypes (a–f types) were identified in the Hokkaido population, suggesting the occurrence of at least six maternal lineages. Distribution maps of the haplotypes constructed using the Geographic Information System showed that the distribution patterns differed from haplotype to haplotype. In particular, distribution of the major three types (a-, b-, and c-types) almost overlapped with three main areas of Coniferous Forests in Hokkaido. These results suggest that expansion of the sika deer population could have occurred through the habitat of Coniferous Forests after the historical bottleneck in Hokkaido.

  • genetic variation and population structure of the japanese sika deer cervus nippon in hokkaido island based on mitochondrial d loop sequences
    Molecular Ecology, 1998
    Co-Authors: Junko Nagata, Ryuichi Masuda, Koichi Kaji, M Kaneko, Michihiro C Yoshida
    Abstract:

    Mitochondrial DNA (mtDNA) D-loop region sequences (602 bp) from 141 samples of the sika deer Cervus nippon collected from Hokkaido Island of Japan were investigated to elucidate population genetic structure. All animals possessed seven repeat units (38 or 39 bp each) in the sequences. Comparison of the 602-bp sequences showed four sites of transitional mutations (A G or C T). Based on combination of the substitutions, six D-loop haplotypes (a-f types) were identified in the Hokkaido population, suggesting the occurrence of at least six maternal lineages. Distribution maps of the haplotypes constructed using the Geographic Information System showed that the distribution of the major three types differed from haplotype to haplotype. In particular, distribution of the major three types (a-, b-, and c-types) almost overlapped with three main areas of Coniferous Forests in Hokkaido. These results suggest that expansion of the sika deer population could have occurred through the habitat of Coniferous Forests after the historical bottleneck in Hokkaido.