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山城考

徳島大学

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リサーチマップ・
Jグローバル
KAKEN
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2024年5月3日更新

職名: 准教授
電話: 088-656-7257
電子メール: tyamash@ias.tokushima-u.ac.jp
学歴: 2004/3: 東北大学大学院理学研究科博士後期3年の課程修了
学位: 理学博士 (東北大学) (2004年3月)
職歴・経歴: 〜: 徳島大学講師, 総合科学部 (-2007.3.)
2007/4: 徳島大学准教授, 総合科学部 (-2009.3.)
2009/4: 徳島大学准教授, 大学院ソシオ・アーツ・アンド・サイエンス研究部 (-2016.3.)
2016/4: 徳島大学准教授, 大学院生物資源産業学研究部 (-2017.3.)
2017/4: 徳島大学准教授, 大学院社会産業理工学研究部

専門分野・研究分野: 生物学 (Biology)
植物系統分類学

研究者総覧で最新データを確認する

2024年5月3日更新

専門分野・研究分野: 生物学 (Biology)
植物系統分類学
担当経験のある授業科目: グローバルコミュニケーション - 日本の伝統工芸を学ぶ (共通教育)
フィールド環境生態学 (学部)
分子生態学特論 (大学院)
卒業研究 (学部)
博物館資料論 (学部)
基礎生物学実験D (共通教育)
基礎生物学実験N (共通教育)
植物学総論 (学部)
生物多様性学 (学部)
生物生産システム実習A (学部)
生物生産システム実習C (学部)
生物生産システム実習Ⅰ (学部)
生物生産システム実習Ⅱ (学部)
生物生産システム概論 (学部)
生物生産フィールド実習 (学部)
生物生産科学特別演習 (大学院)
生物生産科学特別研究 (大学院)
生物資源学研究 (大学院)
生物資源環境学 (学部)
生物資源産業学C (学部)
生物資源産業学実習 (学部)
生物資源産業学専門英語 (学部)
英語論文講読 (学部)
英語論文講読Ⅰ (学部)
英語論文講読Ⅱ (学部)
指導経験: 5人 (学士)

研究者総覧で最新データを確認する

2024年5月3日更新

専門分野・研究分野: 生物学 (Biology)
植物系統分類学

研究テーマ: 被子植物の分類・系統

著書

山城考 :
キョウチクトウ科:改訂新版日本の野生植物,
平凡社, 東京, 2017年3月.

論文

Tadashi Yamashiro, Yoshinori Kaneshiro, Asuka Yamashiro and Masayuki Maki :
The Genetic Diversity and Structure of the Feral Raccoon (Procyon lotor) Population in Shikoku Island, Japan,
Mammal Study, Vol.47, No.3, 189-196, 2022.

(出版サイトへのリンク): ● Publication site (DOI): 10.3106/ms2021-0052
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.3106/ms2021-0052

(DOI: 10.3106/ms2021-0052) Miho Ogishima, Yusuke Hoshino, Sachiko Horie, Tadashi Yamashiro, Masayuki Maki, Kazuo Suzuki and Ikumi Dozono :
Secondary contact and adaptation to local pollinator assemblages mediate geographical variation in corolla length in Isodon shikokianus,
Plant Species Biology, Vol.37, No.3, 222-230, 2022.

(キーワード): altitudinal variation / Bombus / genetic differentiation / migration rate / visitation freiquency
(出版サイトへのリンク): ● Publication site (DOI): 10.1111/1442-1984.12370
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.1111/1442-1984.12370

(DOI: 10.1111/1442-1984.12370) Tadashi Yamashiro, Asuka Yamashiro, Michiyuki Maruoka, Tomiki Kobayashi and Masayuki Maki :
Genetic Structure of a Rare Interspecific Hybrid of Vincetoxicum atratum and V. pycnostelma (Apocynaceae-Asclepiadoideae),
Acta Phytotaxonomica et Geobotanica (APG), Vol.72, No.3, 227-239, 2021.

(キーワード): genetic structure / hybridization / microsatellite / Vincetoxicum atratum / Vincetoxicum pycnostelma
(出版サイトへのリンク): ● Publication site (DOI): 10.18942/apg.202104
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.18942/apg.202104

(DOI: 10.18942/apg.202104) Ryuuta Kyan, Takuma Kimura, Tadashi Yamashiro, Shinji Fujii, Shota Sakaguchi, Motomi Ito, Atsushi J Nagano, Hiroshi Kudoh and Masayuki Maki :
Phylogeographic and demographic modeling analyses of the multiple origins of the rheophytic goldenrod Solidago yokusaiana Makino,
Heredity, Vol.126, No.5, 831-845, 2021.

(出版サイトへのリンク): ● Publication site (DOI): 10.1038/s41437-021-00408-x
(文献検索サイトへのリンク): ● Summary page in Scopus @ Elsevier: 2-s2.0-85099946087

(DOI: 10.1038/s41437-021-00408-x, Elsevier: Scopus) Asuka Yamashiro, Kaneshiro Yoshinori, Yoichi Kawaguchi and Tadashi Yamashiro :
Dietary Overlap But Spatial Gap between Sympatric Japanese Serow (Capricornis crispus) and Sika Deer (Cervus nippon) on Eastern Shikoku, Japan,
Mammal Study, Vol.44, No.4, 261-267, 2019.

(出版サイトへのリンク): ● Publication site (DOI): 10.3106/ms2018-0072
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.3106/ms2018-0072

(DOI: 10.3106/ms2018-0072) Shinji Fujii, Tadashi Yamashiro, Sachiko Horie and Masayuki Maki :
Crassula peduncularis and C. saginoides (Crassulaceae), Newly Naturalized in Japan, and their Genetic Differences from C. aquatica,
Acta Phytotaxonomica et Geobotanica (APG), Vol.70, No.2, 119-127, 2019.

(要約): Recently, we found two species of Crassula newly introduced into central Japan. Based on their morphology, we identified them as Crassula peduncularis and C. saginoides, native to the New World. They closely resemble C. aquatica, which is indigenous to Japan. Here, we describe the morphological distinctions among the three species in detail. In addition, we examined genetic differences among the three species based on sequence variations in the nuclear ribosomal ITS region and three chloroplast intergenic regions. Although C. saginoides was considered to be an inland form of C. aquatica and had been treated as a synonym of C. aquatica, the degree of genetic differentiation was relatively large, suggesting that these two taxa should be considered to be independent species.
(キーワード): Crassula aquatica / Crassula peduncularis / Crassula saginoides / genetic differentiation / morphology / naturalized
(出版サイトへのリンク): ● Publication site (DOI): 10.18942/apg.201818
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1390845713082461952; ● Search Scopus @ Elsevier (DOI): 10.18942/apg.201818

(DOI: 10.18942/apg.201818, CiNii: 1390845713082461952) Tadashi Yamashiro, Ogawa Makoto, Asuka Yamashiro and Maki Masayuki :
Natural hybridization between the endangered herb Artemisia gilvescens (Asteraceae) and the common congener, Artemisia indica var. maximowiczii in Japan,
Acta Phytotaxonomica et Geobotanica (APG), Vol.69, No.2, 109-117, 2018.

(出版サイトへのリンク): ● Publication site (DOI): 10.18942/apg.201802
(文献検索サイトへのリンク): ● Summary page in Scopus @ Elsevier: 2-s2.0-85050520380

(DOI: 10.18942/apg.201802, Elsevier: Scopus) Oike Akira, Watanabe Koichiro, Min Mi-Sook, Tojo Kaji, Kumagai Masahide, Kimono Yuya, Tadashi Yamashiro, Matsuo Takanori, Kodama Maho, Nakamura Yoriko, Notsu Maseru, Tochimoto Takeyoshi, Fujita Hiroyuki, Ota Maki, Ito Etsuro, Yasumasu Shigeki and Nakamura Masahisa :
Origin of sex chromosomes in six groups of Rana rugosa frogs inferred from a sexlinked DNA marker,
Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology, Vol.327, No.7, 444-452, 2017.

(要約): Each vertebrate species, as a general rule, has either the XX/XY or ZZ/ZW chromosomes by which sex is determined. However, the Japanese Rana (R.) rugosa frog is an exception, possessing both sex-determining combinations within one species, varying with region of origin. We collected R. rugosa frogs from 104 sites around Japan and South Korea and determined the nucleotide sequences of the mitochondrial 12S ribosomal RNA gene. Based on the sequences, R. rugosa frogs were divided into four groups from Japan and one from South Korea. The ZZ/ZW type is reportedly derived from the XX/XY type, although recently a new ZZ/ZW type of R. rugosa was reported. However, it still remains unclear from where the sex chromosomes in the five groups of this species were derived. In this study, we successfully isolated a sex-linked DNA maker and used it to classify R. rugosa frogs into several groupings. From the DNA marker as well as from nucleotide analysis of the promoter region of the androgen receptor (AR) gene, we identified another female heterogametic group, designated, West-Central. The sex chromosomes in the West-Central originated from the West and Central groups. The results indicate that a sex-linked DNA marker is a verifiable tool to determine the origin of the sex chromosomes in R. rugosa frogs in which the sex-determining system has changed, during two independent events, from the male to female heterogamety.
(出版サイトへのリンク): ● Publication site (DOI): 10.1002/jez.2130
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 29356406; ● Search Scopus @ Elsevier (PMID): 29356406; ● Search Scopus @ Elsevier (DOI): 10.1002/jez.2130

(DOI: 10.1002/jez.2130, PubMed: 29356406) Asuka Yamashiro, Kanashiro Yoshinori, Yoichi Kawaguchi and Tadashi Yamashiro :
Species, sex, and individual identification of Japanese serow (Capricornis crispus) and sika deer (Cervus nippon) in sympatric region based on the fecal DNA samples,
Conservation Genetics Resources, Vol.9, No.2, 333-338, 2017.

(出版サイトへのリンク): ● Publication site (DOI): 10.1007/s12686-016-0665-1
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.1007/s12686-016-0665-1

(DOI: 10.1007/s12686-016-0665-1) Tadashi Yamashiro, Asuka Yamashiro, Masahito Inoue and Masayuki Maki :
Genetic Diversity and Divergence in Populations of the Threatened Grassland Perennial Vincetoxicum atratum (Apocynaceae-Asclepiadoideae) in Japan.,
The Journal of Heredity, Vol.107, No.5, 455-462, 2016.

(要約): We examined the genetic diversity and structure in populations of the endangered grassland herb Vincetoxicum atratum using 11 polymorphic microsatellite loci. Although the populations were small and disconnected, our molecular data indicated that the species maintains relatively high levels of genetic diversity and connectivity among populations. Population clustering analyses detected 2 to 3 clusters and most of the populations of V. atratum comprised admixture of these genetic clusters. These admixtures likely formed during the process of colonizing habitats that had been disturbed by human activities. However, STRUCTURE clustering detected low-admixtures in populations occurring in rocky maritime sites, which may not be suitable for agriculture/rangeland activities. High genetic diversity and population connectivity suggested that loss of the remaining populations by grassland reduction might be an immediate threat for this species. Small grasslands populations managed by local farmers need appropriate conservation practices. Although our results showed genetic diversity and gene flow among populations of V. atratum were high, it is possible that this resulted from the historical continuous distribution of the species. To examine this hypothesis, further periodical monitoring of the genetic diversity and the genetic differentiation for the species is needed for a conservation action of the species.
(キーワード): Ecosystem / Evolution, Molecular / Gene Flow / Genetic Variation / Genetics, Population / Grassland / Japan / Microsatellite Repeats / Vincetoxicum
(出版サイトへのリンク): ● Publication site (DOI): 10.1093/jhered/esw034
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 27271115; ● Search Scopus @ Elsevier (PMID): 27271115; ● Search Scopus @ Elsevier (DOI): 10.1093/jhered/esw034

(DOI: 10.1093/jhered/esw034, PubMed: 27271115) Yue Li, Fumito Tada, Tadashi Yamashiro and Masayuki Maki :
Long-term persisting hybrid swarm and geographic difference in hybridization pattern: genetic consequences of secondary contact between two Vincetoxicum species (ApocynaceaeAsclepiadoideae),
BMC Evolutionary Biology, Vol.16, 20, 2016.

(要約): During glacial periods, glacial advances caused temperate plant extirpation or retreat into localized warmer areas, and subsequent postglacial glacial retreats resulted in range expansions, which facilitated secondary contact of previously allopatric isolated lineages. The evolutionary outcomes of secondary contact, including hybrid zones, dynamic hybrid swarm, and resultant hybrid speciation, depends on the strengths of reproductive barriers that have arisen through epistatic and pleiotropic effects during allopatric isolation. The aim of this study was to demonstrate refugia isolation and subsequent secondary contact between two perennial Asclepioid species and to assess the genetic consequences of the secondary contact. We modeled the range shift of two ecologically distinct Vincetoxicum species using the species distribution model (SDM) and assessed the genetic consequences of secondary contact by combining morphological and genetic approaches. We performed morphometric analysis (592 individuals) and examined 10 nuclear microsatellites (671 individuals) in V. atratum, V. japonicum, and putative hybrid populations. Multivariate analysis, model-based Bayesian analysis, and non-model-based discriminant analysis of principal components confirmed the hybridization between V. atratum and V. japonicum. High pollen fertility and a lack of linkage disequilibrium suggested that the hybrid populations may be self-sustaining and have persisted since V. atratum and V. japonicum came into contact during the post-glacial period. Moreover, our findings show that the pattern of hybridization between V. atratum and V. japonicum is unidirectional and differs among populations. Geographically-isolated hybrid populations exist as genetically distinct hybrid swarms that consist of V. atratum-like genotypes, V. japonicum-like genotypes, or admixed genotypes. In addition, Bayesian-based clustering analysis and coalescent-based estimates of long-term gene flow showed patterns of introgressive hybridization in three morphologically 'pure' V. japonicum populations. In this study, we demonstrated that climatic oscillations during the Quaternary period likely led to species range shift and subsequently secondary contact. Hybrid populations may be self-sustaining and have persisted since V. atratum and V. japonicum came into contact during the post-glacial period. Pattern of hybridization between V. atratum and V. japonicum is unidirectional and differs among populations. We concluded that these differences in the genetic consequences of secondary contact are caused by historical colonization processes and/or natural selection.
(徳島大学機関リポジトリ): ● Metadata: 114369
(出版サイトへのリンク): ● Publication site (DOI): 10.1186/s12862-016-0587-2
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 26801608; ● Summary page in Scopus @ Elsevier: 2-s2.0-84961129151

(徳島大学機関リポジトリ: 114369, DOI: 10.1186/s12862-016-0587-2, PubMed: 26801608, Elsevier: Scopus) Asuka Yamashiro, Endo Akira, Kuwataka Hidehiko, Matsumoto Yuki and Tadashi Yamashiro :
Geographic Origin and Genetic Structure of Introduced Sika Deer, Kerama Deer (Cervus nippon keramae) on Ryukyus Inferred from Mitochondrial DNA Sequences,
Mammal Study, Vol.40, No.3, 187-192, 2015.

(出版サイトへのリンク): ● Publication site (DOI): 10.3106/041.040.0306
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.3106/041.040.0306

(DOI: 10.3106/041.040.0306) Yuki Matsumoto, Yu-ten Ju, Tadashi Yamashiro and Asuka Yamashiro :
Evidence of pre-introduction hybridization of Formosan sika deer (Cervus nippon taiouanus ) on Okinoshima, Wakayama Prefecture, Japan, based on mitochondrial and nuclear DNA sequences,
Conservation Genetics, Vol.16, No.2, 497-502, 2015.

(キーワード): Formosan sika deer / Hybridization / introduced deer / mtDNA / Nuclear DNA
(出版サイトへのリンク): ● Publication site (DOI): 10.1007/s10592-014-0675-z
(文献検索サイトへのリンク): ● Summary page in Scopus @ Elsevier: 2-s2.0-84925486047

(DOI: 10.1007/s10592-014-0675-z, Elsevier: Scopus) Asuka Yamashiro, Tadashi Yamashiro, Mori Kazuo and Mahito Kamada :
Indirect estimation of Recent Sika Deer (Cervus nippon) Migration in Tsurugi Quasi-National Park, Shikoku, Japan,
Mammal Study, Vol.39, No.2, 83-89, 2014.

(キーワード): genetic structure / microsatellite / migration / sika deer
(出版サイトへのリンク): ● Publication site (DOI): 10.3106/041.039.0203
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.3106/041.039.0203

(DOI: 10.3106/041.039.0203) Chung Yoon Mi, Nason D. John, López-Pujol Jordi, Tadashi Yamashiro, Yang Bo-Yun, Luo Yi-Bo and Chung Gi Myong :
Genetic consequences of fragmentation on populations of the terrestrial orchid Cymbidium goeringii,
Biological Conservation, Vol.170, 222-231, 2014.

(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.biocon.2013.12.005
(文献検索サイトへのリンク): ● Summary page in Scopus @ Elsevier: 2-s2.0-84893205874

(DOI: 10.1016/j.biocon.2013.12.005, Elsevier: Scopus) Chung Yoon Mi, Moon Myung-Ok, López-Pujol Jordi, Maki Masayuki, Tadashi Yamashiro, Yukawa Tomohisa, Sugiura Naoto, Lee Yung-I and Chung Gi Myong :
Was Jeju Island a glacial refugium for East Asian warm-temperate plants? Insights from the homosporous fern Selliguea hastata (Polypodiaceae),
American Journal of Botany, Vol.100, No.11, 2240-2249, 2013.

(要約): We posed two hypotheses for broad scenarios of postglacial recolonization of Korea by the warm-temperate vegetation: (1) that extant Korean populations are derived from a single refugium, or (2) that they are derived from multiple refugia. We chose a homosporous fern typical of East Asian warm-temperate vegetation, Selliguea hastata, to test which of the two scenarios is more likely and to check whether Japan contained putative glacial refugia. Using 16 allozyme loci, we obtained genotypes of 756 individuals from 20 populations, representative of the whole distribution area in Korea (including Jeju Island), Japan, and Taiwan. We assessed genetic variability within and among populations, Wright's F-statistics, and conducted analysis of molecular variance, model-based Bayesian clustering, and bottleneck tests. We found no allozyme variation within populations of S. hastata in mainland Korea, whereas genetic polymorphism was detected for populations from Jeju Island, Japan (in particular a population from southeastern Shikoku), and Taiwan. The levels of inbreeding within populations were high, consistent with the potential of S. hastata for intragametophytic selfing. Data on allelic richness together with Bayesian clustering methods suggest a pattern of postglacial recolonization of mainland Korea from a single refugium, probably located either on Jeju Island or in Japan. Jeju Island should merit the highest priority for conservation biogeography, as it played a role as a Quaternary refugium for arctic-alpine, boreal, temperate as well as warm-temperate plants, as suggested here.
(キーワード): Bayes Theorem / Conservation of Natural Resources / Electrophoresis / Genetic Variation / Inbreeding / Islands / Isoenzymes / Japan / Molecular Sequence Data / Phylogeny / Plant Proteins / Polypodiaceae / Republic of Korea / Sequence Analysis, DNA / Taiwan
(出版サイトへのリンク): ● Publication site (DOI): 10.3732/ajb.1300134
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 24190948; ● Summary page in Scopus @ Elsevier: 2-s2.0-84887342859

(DOI: 10.3732/ajb.1300134, PubMed: 24190948, Elsevier: Scopus) Tadashi Yamashiro, Asuka Yamashiro, Ikumi Dohzono and Masayuki Maki :
Development of Microsatellite Markers for Isodon longitubus (Lamiaceae),
Applications in Plant Sciences, Vol.1, No.10, 1300028, 2013.

(要約): · Microsatellite markers were developed for Isodon longitubus to study the natural hybridization of the species and its congeners. · A total of 10 primer sets were developed for I. longitubus. From the initial screening, all of 10 loci were polymorphic with five to 19 alleles per locus in the Mt. Ishizuchi population, whereas nine loci were polymorphic with two to 12 alleles per loci in the Toon population. Although one locus was monomorphic at one population, the observed and expected heterozygosity values estimated from 34 I. longitubus samples ranged from 0.273 to 1.000 and from 0.483 to 0.918, respectively. Six primer sets could amplify all three species examined in this study (I. inflexus, I. japonicus, and I. shikokianus). · The 10 microsatellite markers developed here will be useful in analyzing the population genetic structure of I. longitubus and in studying the natural hybridization between Isodon species.
(出版サイトへのリンク): ● Publication site (DOI): 10.3732/apps.1300028
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 25202487; ● Search Scopus @ Elsevier (PMID): 25202487; ● Search Scopus @ Elsevier (DOI): 10.3732/apps.1300028

(DOI: 10.3732/apps.1300028, PubMed: 25202487) Asuka Yamashiro, Mahito Kamada and Tadashi Yamashiro :
A comparative study of the fecal characters of Japanese serow (Capricornis crispus) and sika deer (Cervus nippon),
Mammal Study, Vol.38, No.2, 117-122, 2013.

(出版サイトへのリンク): ● Publication site (DOI): 10.3106/041.038.0207
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.3106/041.038.0207

(DOI: 10.3106/041.038.0207) Asuka Yamashiro, Tadashi Yamashiro and Yoichi Tateishi :
Isolation and characterization of micro satellite markers for Canavalia cathartica and C. lineata (Fabaceae),
Applications in Plant Sciences, Vol.1, No.1, 1200111, 2013.

(出版サイトへのリンク): ● Publication site (DOI): 10.3732/apps.1200111
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.3732/apps.1200111

(DOI: 10.3732/apps.1200111) Tadashi Yamashiro, Asuka Yamashiro, Ogawa Makoto, Kurosaki Nobuhira, Kobayashi Tomiki and Maki Masayuki :
High population genetic diversity and regional differentiation in the endemic Vincetoxicum katoi-yamanakae complex (Apocynaceae; Asclepiadoideae) in Japan,
Acta Phytotaxonomica et Geobotanica (APG), Vol.63, No.1, 29-40, 2012.

(要約): We examined morphological differentiation and allozyme diversity in nine populations of Vincetoxicum katoi and its close relative V. yamanakae. Although, V. yamanakae has been distinguished from V. katoi in having a larger corolla and gynostegium, the principal component analysis based on 12 floral and three leaf characters did not support the distinction of the two taxa. The six allozyme loci examined revealed that population of V. katoi and V. yamanakae maintained high genetic diversity (P=72.1, A=2.40, h=0.313). The nine populations were clustered into three regions (Kanto-Tokai; middle Kiniki; and Kii-Shikoku) based on genetic differences, contradicting the current taxonomic treatment. Considering the evidence, it is appropriate to treat V. yamanakae as a synonym of V. katoi. The high genetic differentiation among regions suggested that disjunct distribution of the V. katoi-V. yamanakae complex might reflect the persistence of refugia since the last glacial period. In particular, the middle Kinki (Hyogo) population is located outside of known evergreen forest refugia, suggesting that it might have survived during the glacial period within cooler vegetative zones, such as in temperate forests, whereas the populations on the Pacific-side retreated to warm-temperature coastal refugia.
(キーワード): allozyme / disjunct distribution / floral morophology / Vincetoxicum katoi / Vincetoxicum yamanakae
(出版サイトへのリンク): ● Publication site (DOI): 10.18942/apg.KJ00008328279
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1390282680246530944; ● Search Scopus @ Elsevier (DOI): 10.18942/apg.KJ00008328279

(DOI: 10.18942/apg.KJ00008328279, CiNii: 1390282680246530944) Tadashi Yamashiro and Kobayashi Tomiki :
Genetic diversity in the threatened local endemic plant Arisaema minus (Araceae),
Acta Phytotaxonomica et Geobotanica (APG), Vol.61, No.3, 117-122, 2011.

(要約): The genetic diversity and genetic structure of the locally endemic Arisaema minus was examined using allozyme polymorphisms. Arisaema minus is restricted to Hyogo Prefecture in western Honshu, Japan. The Red List of Japan treats it as "vulnerable". To determine the genetic diversity of the species, 274 individuals from six populations were sampled. Genetic diversity at 10 allozyme loci was relatively high at both the population and species level, and comparable to previously reported species of Japanese Arisaema species having wider distribution ranges. Although the western and eastern Hyogo populations are disjunct, very low genetic differentiation was observed among the six populations (Gst=0.06). The genetic data suggest that the risk of rapid extinction of A. minus is quite low. The eastern Hyogo populations, however, have lower genetic diversity than those in western Hyogo and are threatened by habitat destruction caused by human activities, therefore placing them at greater risk of extinction. Periodic monitoring of both the demography and genetic variation in the eastern populations is needed.
(キーワード): Arisaema minus / genetic diversity / local endemic
(出版サイトへのリンク): ● Publication site (DOI): 10.18942/apg.KJ00007062767
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1390282680246324736; ● Search Scopus @ Elsevier (DOI): 10.18942/apg.KJ00007062767

(DOI: 10.18942/apg.KJ00007062767, CiNii: 1390282680246324736) Asuka Yamashiro, Tadashi Yamashiro, Baba Minoru, Endo Akira and Mahito Kamada :
Species identification based on the faecal DNA samples of the Japanese serow (Capricornis crispus),
Conservation Genetics Resources, Vol.2, No.1, 409-414, 2010.

(出版サイトへのリンク): ● Publication site (DOI): 10.1007/s12686-010-9281-7
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.1007/s12686-010-9281-7

(DOI: 10.1007/s12686-010-9281-7) Maki Masayuki, Kokubugata Goro and Tadashi Yamashiro :
Lack of allozyme diversity in populations of the endangered perennial Senecio scandens (Asteraceae) in Japan: comparison with a population in Taiwan,
Vol.58, No.1, 39-42, 2010. Masayuki Maki, Tadashi Yamashiro, Ikumi Dohzono and Kazuo Suzuki :
Molecular phylogeny of Isodon (Lamiaceae) in Japan using chloroplast DNA sequences: recent rapid radiations or ancient introgressive hybridization?,
Plant Species Biology, Vol.25, No.3, 240-248, 2010.

(出版サイトへのリンク): ● Publication site (DOI): 10.1111/j.1442-1984.2010.00290.x
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.1111/j.1442-1984.2010.00290.x

(DOI: 10.1111/j.1442-1984.2010.00290.x) Maki Masayuki, Matsumura Shun'ichi and Tadashi Yamashiro :
Allozyme diversity and history of distribution expansion in the martime perennial plant Hedyotis strigulosa (Rubiaceae), distributed over the wide latitudes in the Japanese Archipelago,
Biological Journal of the Linnean Society, Vol.93, No.4, 679-688, 2008.

(出版サイトへのリンク): ● Publication site (DOI): 10.1111/j.1095-8312.2007.00894.x
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.1111/j.1095-8312.2007.00894.x

(DOI: 10.1111/j.1095-8312.2007.00894.x) Asuka Yamashiro and Tadashi Yamashiro :
Utilization on extrafloral nectaries and fruit domatia of Canavalia lineata and C. cathartica (leguminosae) by ants,
Arthropod-Plant Interactions, Vol.2, No.1, 1-8, 2008.

(キーワード): Canavalia cathartica / Canavalia lineata / Domatia / EFNs / Fruit / Nest / Plant-ant interaction / NEOTROPICAL HERB / 植物 (plant) / HERBIVORE / MUTUALISM / ACACIAS / GUARDS / 木 (tree) / SET
(出版サイトへのリンク): ● Publication site (DOI): 10.1007/s11829-008-9030-y
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.1007/s11829-008-9030-y

(DOI: 10.1007/s11829-008-9030-y) Tadashi Yamashiro, Asuka Yamashiro, Jun Yokoyama and Masayuki Maki :
Morphological aspects and phylogenetic analyses of pollination systems in the Tylophora-Vincetoxicum complex (Apocynaceae-Asclepiadoideae) in Japan,
Biological Journal of the Linnean Society, Vol.93, No.2, 325-341, 2008.

(出版サイトへのリンク): ● Publication site (DOI): 10.1111/j.1095-8312.2007.00896.x
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.1111/j.1095-8312.2007.00896.x

(DOI: 10.1111/j.1095-8312.2007.00896.x) Kamada Takuro, Tadashi Yamashiro and Maki Masayuki :
Intraspecific morphological and genetic differentiation in Scrophularia grayana (Scrophulariaceae),
Journal of Plant Research, Vol.120, No.3, 437-443, 2007.

(要約): Scrophularia grayana, which is distributed throughout northern Japan and Sakhalin, and its locally endemic variety var. grayanoides, have been examined morphometrically and genetically. Principal-component analysis using a total of 26 morphological characteristics revealed that these taxa are morphologically differentiated, but that the difference is not distinct. These two taxa have the same number of chromosomes in the somatic cells, 2n = 94, suggesting that ploidal level difference is not relevant to their divergence. The distributions of the taxa are adjoining in the north of Japanese mainland Honshu. Nevertheless, principal-coordinate analysis using putative 112 ISSR loci indicated they are genetically very distinct. Many taxon-specific alleles were found, and many of the alleles were fixed in each taxon. This genetic information suggests that a relatively long time has passed since the taxa became differentiated and that gene flow has rarely occurred between them, although morphological similarity has been maintained, probably because of natural selective forces.
(キーワード): Flowers / Genetic Variation / Geography / Japan / Plant Leaves / Scrophularia / Species Specificity
(出版サイトへのリンク): ● Publication site (DOI): 10.1007/s10265-007-0084-1
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 17431541; ● Search Scopus @ Elsevier (PMID): 17431541; ● Search Scopus @ Elsevier (DOI): 10.1007/s10265-007-0084-1

(DOI: 10.1007/s10265-007-0084-1, PubMed: 17431541) 立石庸一, 松村俊一, 山城考, 新城和治 :
クズ(マメ科)の琉球列島における自然分布の空白域と沖縄・石垣両島への侵入,
沖縄生物学会誌, Vol.44, 65-73, 2006年.

(キーワード): invasion / natural distribution / Pueraria lobata / Ryukyu Islands
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1521699230128404352

(CiNii: 1521699230128404352) Asuka Yamashiro and Tadashi Yamashiro :
Seed dispersal by Kerama deer (Cervus nippon keramae) on Aka Island, the Ryukyu Archipelago, Japan,
Biotropica, Vol.38, No.3, 405-413, 2006.

(キーワード): Cervus nippon keramae / endozoochory / Kerama deer / Ryukyu Islands / seed dispersal / subtropical rain forest / WARM TEMPERATE FOREST / SIKA-DEER / FOOD-HABITS / FRUIT / HERBIVORES / MIGRATION / コミュニティ (community) / MAMMALS / FOLIAGE / HONSHU
(出版サイトへのリンク): ● Publication site (DOI): 10.1111/j.1744-7429.2006.00158.x
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.1111/j.1744-7429.2006.00158.x

(DOI: 10.1111/j.1744-7429.2006.00158.x) Tadashi Yamashiro, Kazuo Suzuki and Maki Masayuki :
Chromosome Numbers of Isodon (Lamiaceae) in Japan,
Acta Phytotaxonomica et Geobotanica (APG), Vol.56, No.3, 241-246, 2005.

(要約): Somatic chromosome numbers were counted in seven species and six varieties of Isodon occurring in Japan. All of the taxa had 2n=24 chromosomes, indicating that they are diploid. For all taxa except I. umbrosus var. hakusanensis and I. japonicus, chromosome numbers are reported here for the first time. The results suggest that diversification in Japanese taxa of Isodon has occurred at the diploid level, even though some reticulation had been suggested by a preliminary molecular study.
(キーワード): chromosome number / Isodon / Japan / Lamiaceae
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1390001205269064320

(CiNii: 1390001205269064320) Tadashi Yamashiro and Masayuki Maki :
A comparative study of the reproductive character and genetic diversity of an autogamous Tylophora matsumurae and its progenitor Tylophora tanakae (Apocynaceae-Asclepiadoideae),
Plant Systematics and Evolution, Vol.256, No.1, 55-67, 2005.

(出版サイトへのリンク): ● Publication site (DOI): 10.1007/s00606-005-0360-2
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.1007/s00606-005-0360-2

(DOI: 10.1007/s00606-005-0360-2) 山城明日香, 山城考, 土肥昭夫, 伊澤雅子, 遠藤晃 :
ケラマジカ(Cervus nippon keramae)の植生ー糞分析および食痕調査からー,
野生生物保護, Vol.9, 47-61, 2004年. 立石庸一, 松村俊一, 山城考, 新城和治 :
琉球列島植物分布資料17,
沖縄生物学会誌, Vol.42, 61-67, 2004年. Tadashi Yamashiro, Tatsuya Fukuda, Jun Yokoyama and Masayuki Maki :
Molecular phylogeny of Vincetoxicum (Apocynaceae-Asclepiadoideae) based on the nucleotide sequences of cpDNA and nrDNA,
Molecular Phylogenetics and Evolution, Vol.31, No.2, 689-700, 2004.

(要約): Molecular phylogenetic analyses of Vincetoxicum and Tylophora (Apocynaceae-Asclepiadoideae) were conducted based on the nucleotide sequences of cpDNA (two intergenic spacers of trnL (UAA)-trnF (GAA) and psbA-trnH and three introns, i.e., atpF, trnG (UCC) and trnL (UAA)), and nrDNA (ITS and ETS regions). Our phylogenetic analysis revealed two monophyletic groups; one consisted of seven taxa of Tylophora and Vincetoxicum inamoenum, Vincetoxicum magnificum and Vincetoxicum macrophyllum (Clade I) and the other consisted of 17 accessions of Vincetoxicum (Clade II). The monophyly of the genus Vincetoxicum was not supported. Although many nucleotide substitutions were observed in Clade I, the genetic differentiation within Clade II was small. Low genetic diversification but considerable morphological divergence suggests that the species in Clade II had undergone rapid diversification. Although most species in Clade I have tiny flowers, those in Clade II have larger and more nectariferous ones. Thus, we hypothesized that the rapid morphological radiation in Clade II may have been due to the gaining of floral characters such as large flowers and large amounts of nectar corresponding to diverse pollinators.
(キーワード): Asclepiadoideae / DNA sequences / Molecular phylogeny / Rapid radiation / Vincetoxicum
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.ympev.2003.08.016
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 15062803; ● Search Scopus @ Elsevier (PMID): 15062803; ● Search Scopus @ Elsevier (DOI): 10.1016/j.ympev.2003.08.016

(DOI: 10.1016/j.ympev.2003.08.016, PubMed: 15062803) Tadashi Yamashiro, Jun Yokoyama and Masayuki Maki :
Two new species of Vincetoxicum (Apocynaceae-Asclepiadoideae) from Japan,
Acta Phytotaxonomica et Geobotanica (APG), Vol.55, No.1, 1-8, 2004.

(要約): Two new species, Vincetoxicum izuense and V. hoyoense, are described here. Vincetoxicum izuense is a twining perennial herb on rocky beaches and on the margins of thickets near the sea and is endemic to the southern Izu Peninsula. It resembles V. sublanceolatum and V. japonicum, but V. izuense is distinguished from them by the leaves, follicles and trichomes on the lower surface of the leaves. Vincetoxicum hoyoense is a large, perennial, twining herb on rocks and on the margins of thickets facing the sea and is endemic to the area around the Bungo Channel. Vincetoxicum hoyoense resembles V. japonicum f. puncticulatum and V. sublanceolatum, but V. hoyoense can be distinguished from them by the larger, elliptic or ovate leaf blades with shallowly cordate base and the longer corolla lobes. Although V. hoyoense also resembles V. izuense in flower, morphology and leaf shape, V. hoyoense is easily distinguished from it by the large ovate or elliptic leaves with shallowly cordate base and the large corollas.
(キーワード): Bungo Channel / Izu Peninsula / new species / Vincetoxicum
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1390001205270321792

(CiNii: 1390001205270321792) Tadashi Yamashiro, Yoichi Tateishi, Tetsuo Denda, Masatsugu Yokota and Masyuki Maki :
Transference of Cynanchum matsumurae T. Yamaz. to Tylophora (Asclepiadaceae),
The Journal of Japanese Botany, Vol.78, No.6, 349-354, 2003.

(キーワード): Cynanchum matsumurae / new combination / Ryukyus / Tylophora tanakae / Vincetoxcium matsumurae
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1520573330403905920

(CiNii: 1520573330403905920) Masayuki Maki, Tadashi Yamashiro and Shun-ichi Matsumura :
High levels of genetic diversity on island populations of the island endemic Suzukia luchuensis (Labiatae),
Heredity, Vol.91, No.3, 300-306, 2003.

(要約): Genetic diversity and genetic differentiation within and among island populations was examined by allozyme electrophoresis in Suzukia luchuensis (Labiatae), which is endemic to four of the Ryukyu Islands, southern Japan, and one island near Taiwan. Intrapopulation allozyme diversity was very low in all the four Ryukyu Islands, probably due to the effects of random drift in small populations. In contrast, genetic diversity at the species level was high, possibly because of an ancient origin of populations and/or multiple colonization of the species on different islands. Genetic differentiation among the overall populations was high (G(ST)=0.863), while gene flow (Nm) as estimated from allozyme frequency data was 0.041, suggesting that its occurrence among populations is highly restricted. Hierarchical analysis of genetic differentiation indicated that a high proportion of the total allelic variance is attributed to variation among islands, corresponding to the fact that several alleles were fixed on only one island. However, intraisland genetic differentiation was small on all islands except Yonaguni Island, where S. luchuensis is relatively widely distributed. Most diversity was thus due to differences among islands.
(キーワード): allozyme / gene flow / genetic diversity / insular endemic / Labiatae
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/sj.hdy.6800311
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 12939632; ● Search Scopus @ Elsevier (PMID): 12939632; ● Search Scopus @ Elsevier (DOI): 10.1038/sj.hdy.6800311

(DOI: 10.1038/sj.hdy.6800311, PubMed: 12939632) Tadashi Yamashiro, Yoichi Tateishi and Masayuki Maki :
Vincetoxicum yonakuniense, a new combination of Asclepiadaceae and its new distribution record on Senkaku Island, Ryukyu Archipelago,
Acta Phytotaxonomica et Geobotanica (APG), Vol.54, No.1, 31-36, 2003.

(要約): Cynanchum yonakuniense, a perennial twining herb, endemic to Yonaguni Island, the Ryukyu Archipelago has never been recorded since its original materials collected there. We rediscovered it on the island and moreover found a herbarium specimen of the species on Senkaku Islands in the same archipelago. In this paper we added the morphologies of root, fruit and seed to the description of this species. On the basis of morphological re-examinations, we propose a new combination Vincetoxicum yonakuniense.
(キーワード): Asclepiadaceae / Cynanchum yonakuniense / new combination / Ryukyu Archipelago
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1390001205270344704

(CiNii: 1390001205270344704) Tadashi Yamashiro, Masatsugu Yokota, Tetsuo Denda, Yoichi Tateishi, Jun Yokoyama and Masayuki Maki :
Chromosme numbers of Japanese Asclepiadaceae,
Acta Phytotaxonomica et Geobotanica, Vol.53, No.2, 143-152, 2002.

(キーワード): Asclepiadaceae / chromosome number / intraspecific polyploidy / Japan

MISC

渡部稔, 山城考, 佐藤高則, 大橋眞, 間世田英明, 續木章三, 英崇夫 :
高大連携事業「高校生の大学研究室への体験入学型学習プログラム」の実施報告,
大学教育研究ジャーナル, No.6, 85-101, 2009年.

(徳島大学機関リポジトリ): ● Metadata: 82694
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1050845762393916288

(徳島大学機関リポジトリ: 82694, CiNii: 1050845762393916288) 大橋眞, 山城考, 中鉢龍一郎, 佐藤征弥, 佐藤高則 :
体験型ゼミ『徳島の文化遺産「吉野川第十堰」から学ぶ自然と人間の共生』の実施と共生環境教育としての意義, --- 現代GP「豊饒な吉野川を持続可能とする共生環境教育」の一環として ---,
大学教育研究ジャーナル, No.5, 128-132, 2008年.

(徳島大学機関リポジトリ): ● Metadata: 82682
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1050845762393913856

(徳島大学機関リポジトリ: 82682, CiNii: 1050845762393913856) 山城考, 山城明日香 :
キレンゲショウマ(ユキノシタ科)の遺伝的多型と遺伝的分化に関する解析,
阿波学会紀要, Vol.54, 45-48, 2008年. 山城考, 山城明日香 :
剣山における大型草食獣の希少植物に対する食害状況の把握．阿波学会紀要,
阿波学会紀要, Vol.53, 39-42, 2007年. 山城考, 山城明日香 :
木沢村における野生動物による農林業被害状況,
阿波学会紀要, No.51, 165-171, 2005年. 山城考, 山城明日香 :
木沢村における野生動物による農業被害状況,
阿波学会紀要, Vol.51, 165-172, 2004年.

総説・解説: 研究者総覧に該当データはありませんでした。
講演・発表: 中村豊, 中沢道彦, 山城考, 端野晋平, 那須浩郎 :
徳島市三谷遺跡の発掘調査-雑穀農耕開始期の遺跡調査-,
雑穀研究会, 2016年8月. 渡部稔, 山城考, 小川誠 :
タンポポを題材とした遺伝子解析の実験,
日本生物教育学会第98回研究発表予稿集, 30, 2015年1月.

研究会・報告書

平井松午, 山城考 :
徳島県美馬市舞中島文化的景観保存調査報告書,
113, 2011年3月. 友岡憲彦, ダンカンヴォーン, 江川宜伸, 立石庸一, 山城考 :
南西諸島におけるアズキ近縁野生種の分布調査と収集,
農業生物資源研究書, Vol.16, 39-49, 2000年1月.

(キーワード): wild species / Vigna / Canavalia / Macroptilium / Okinawa

特許: 研究者総覧に該当データはありませんでした。
作品: 研究者総覧に該当データはありませんでした。
補助金・競争的資金: 大規模撹乱と野生植物集団の遺伝的多様性：巨大津波を想定した前向き・後ろ向き研究 (研究課題/領域番号: 22H02366 )
稲作の衰退が生物多様性を減少させる：落水後のため池に特有な植物群の現状とその保全 (研究課題/領域番号: 19H02975 )
津波攪乱域に新規に出現した稀少植物群の保全遺伝学的研究―地域固有性の解明と保全 (研究課題/領域番号: 16H04733 )
西日本の渓流沿い植物の系統地理及び集団維持に関する研究 (研究課題/領域番号: 15K07186 )
縄文／弥生移行期における農耕の実態解明に関する研究 (研究課題/領域番号: 26370897 )
風穴植物の系統地理学－低地に氷河期の足跡を探る (研究課題/領域番号: 24657059 )
交雑集団を利用した近縁種間における異なる花冠長への分化過程および維持機構の解析 (研究課題/領域番号: 24570101 )
ニホンジカ個体数の広域的・効率的管理に向けた施策支援システムの構築 (研究課題/領域番号: 19310029 )
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2024年5月3日更新

専門分野・研究分野: 生物学 (Biology)
植物系統分類学
所属学会・所属協会: 日本植物分類学会
徳島生物学会
委員歴・役員歴: 研究者総覧に該当データはありませんでした。
受賞: 2013年3月, 日本植物分類学会
活動: (徳島県カモシカ保護委員 [2004年7月〜])

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Jグローバル最終確認日: 2024/4/27 01:30
氏名（漢字）: 山城考
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氏名（英字）: Yamashiro Tadashi
所属機関: 徳島大学准教授

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researchmap最終確認日: 2024/4/28 02:23
氏名（漢字）: 山城考
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氏名（英字）: Yamashiro Tadashi
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ＫＡＫＥＮで最新データを確認する

2024年4月27日更新

研究者番号: 50380126

所属（現在）: 2024/4/1 : 徳島大学, 大学院社会産業理工学研究部(生物資源産業学域), 准教授

所属（過去の研究課題 情報に基づく）*注記: 2017/4/1 – 2023/4/1 : 徳島大学, 大学院社会産業理工学研究部(生物資源産業学域), 准教授
2016/4/1 : 徳島大学, 大学院生物資源産業学研究部, 准教授
2012/4/1 – 2015/4/1 : 徳島大学, 大学院ソシオ・アーツ・アンド・サイエンス研究部, 准教授
2014/4/1 : 徳島大学, 総合科学部, 准教授
2013/4/1 – 2014/4/1 : 徳島大学, ソシオ・アーツ・アンド・サイエンス部, 准教授
2012/4/1 : 徳島大学, 総合科学部, 准教授
2009/4/1 : 徳島大学, 大学院・ソシオ・アーツ・アンド・サイエンス研究部, 准教授
2007/4/1 – 2008/4/1 : 徳島大学, 総合科学部, 准教授

審査区分/研究分野

研究代表者

生物系 / 生物学 / 基礎生物学 / 生物多様性・分類

研究代表者以外

総合・新領域系 / 複合新領域 / 環境学 / 環境影響評価・環境政策
生物系 / 生物学 / 基礎生物学 / 生物多様性・分類
人文社会系 / 人文学 / 史学 / 考古学
生物系 / 総合生物 / 生物資源保全学 / 生物資源保全学
小区分39060:生物資源保全学関連

キーワード

研究代表者

種間交雑 / 花冠長 / 遺伝子型 / 雑種指数 / 生殖的隔離 / マイクロサテライト / ヤマハッカ属 / シソ科植物 / アキチョウジ / ヤマハッカ / 交雑集団 / 渓流沿い植物 / 集団クラスタリング / 生物地理 / レフュージア / 系統地理 / 環境適応 / 種分化

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ニホンジカ / GPS / GIS / DNA / 移動分散 / 空間モデル / 個体数管理 / GISデータベース / GPSによる個体追跡 / 分布拡大モデル / 糞DNA / 遺伝的構造 / マイクロサテライト / 分布拡大予測モデル / DNAによる分布拡大過程推定 / 社会システム / 合意形成 / GPSによる固体追跡 / 系統地理学 / 遺伝的分化 / 風穴 / 遺伝的多様性 / 縄文時代 / 弥生時代 / 農耕の起源 / イネ / アワ / キビ / 石棒 / 縄文 / 弥生 / 畠跡 / 三谷遺跡 / 農耕起源 / 凸帯文土器 / 遠賀川式土器 / 石棒祭祀 / 縄文弥生移行期 / アズキ / 在来種保全 / 遺伝子保全 / 遺伝子資源保全 / 遺伝子資源

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