Updated on 2024/05/28

写真a

 
EIMURA Naoko
 
Organization
Research Field in Agriculture, Agriculture, Fisheries and Veterinary Medicine Area Faculty of Agriculture Department of Agriculture Assistant Professor
Title
Assistant Professor

Degree

  • 博士（理学） ( 2015.3   立教大学 )

Research Interests

  • 鳥類

  • 種子散布

  • 生物間相互作用

  • 島の生物

  • 保全

Research Areas

  • Life Science / Ecology and environment  / 森林保護学

Research History

  • Kagoshima University   Research Field in Agriculture, Agriculture, Fisheries and Veterinary Medicine Area Faculty of Agriculture Department of Environmental Sciences and Technology   Assistant Professor

    2018.8

Professional Memberships

  • 日本生態学会

  • 植物分類学会

  • 九州森林学会

  • 種生物学会

  • 日本鳥学会

Committee Memberships

  • 日本鳥学会   和文誌編集委員  

    2024.1   

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    Committee type：Academic society

  • 生態学会九州地区   鹿児島地区役員  

    2023.1 - 2024.12   

  • 日本鳥学会   企画委員  

    2022.2   

 

Papers

  • Naoko Emura, Tomoaki Muranaka, Takaya Iwasaki, Mie N Honjo, Atsushi J Nagano, Yuji Isagi, Hiroshi Kudoh .  Effects of fruit dimorphism on genetic structure and gene flow in the coastal shrub <i>Scaevola taccada</i> .  Annals of Botany130 ( 7 ) 1029 - 1040   2022.12

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Oxford University Press (OUP)  

    Abstract

    Background and Aims

    Plant propagules often possess specialized morphologies that facilitate dispersal across specific landscapes. In the fruit dimorphism of a coastal shrub, Scaevola taccada, individual plants produce either cork-morph or pulp-morph fruits. The former is buoyant and common on sandy beaches, whereas the latter does not float, is bird-dispersed, and is common on elevated sites such as slopes on sea cliffs and behind rocky shores. We hypothesized that beach populations bridge the heterogeneous landscapes by serving as a source of both fruit types, while dispersal is biased for the pulp morph on elevated sites within the islands and for the cork morph between beaches of different islands. Based on this hypothesis, we predicted that populations in elevated sites would diverge genetically over time due to isolation by distance, whereas beach populations would maintain high genetic similarity via current gene flow.

    Methods

    The genetic structure and gene flow in S. taccada were evaluated by investigating genome-wide single nucleotide polymorphisms in plants from 17 sampling sites on six islands (belonging to the Ryukyu, Daito and Ogasawara Islands) in Japan.

    Key Results

    Geographical isolation was detected among the three distant island groups. Analyses within the Ryukyu Islands suggested that sandy beach populations were characterized by genetic admixture, whereas populations in elevated sites were relatively isolated between the islands. Pairwise FST values between islands were lowest between sandy beaches, intermediate between sandy beaches and elevated sites, and highest between elevated sites.

    Conclusions

    Dispersal across the ocean by cork morphs is sufficiently frequent to prevent genetic divergence between beaches of different islands. Stronger genetic isolation of elevated sites between islands suggests that bird dispersal by pulp morphs is restricted mainly within islands. These contrasting patterns of gene flow realized by fruit dimorphism provide evidence that fruit characteristics can strongly mediate genetic structure.

    DOI： 10.1093/aob/mcac138

    Scopus

    PubMed

  • Hata Kunihiko, Kawadzu Takuma, Emura Naoko .  Effect of temperature on mycelial growth of the pathogen of zonate leaf blight isolated from <i>Camellia sasanqua</i> .  Tree and Forest Health26 ( 2 ) 79 - 80   2022.4Effect of temperature on mycelial growth of the pathogen of zonate leaf blight isolated from <i>Camellia sasanqua</i>

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    Language：Japanese   Publisher：Tree Health Research Society, Japan  

    DOI： 10.18938/treeforesthealth.26.2_79

  • 榮村奈緒子・繁昌慶・村中智明 .  大隅諸島竹島における鳥類の生息状況と外来種イエネコによる捕食状況 .  Strix37   9 - 23   2021.5大隅諸島竹島における鳥類の生息状況と外来種イエネコによる捕食状況Reviewed

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    Authorship：Lead author   Language：Japanese   Publishing type：Research paper (bulletin of university, research institution)  

  • Hata Kunihiko, Hayase Aina, Fujii Yusuke, Okuda Ayako, Emura Naoko .  Occurrence of zonate leaf blight of <i>Camellia sasanqua</i> in Kagoshima prefecture and affecting factors .  Tree and Forest Health25 ( 2 ) 67 - 68   2021.4Occurrence of zonate leaf blight of <i>Camellia sasanqua</i> in Kagoshima prefecture and affecting factors

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    Language：Japanese   Publisher：Tree Health Research Society, Japan  

    DOI： 10.18938/treeforesthealth.25.2_67

  • 佐藤逸史, 大石圭太, 畑邦彦, 榮村奈緒子 .  赤外線センサーカメラで観察された鹿児島県本土の連続林と分断林を利用する哺乳類と鳥類． .  鹿児島大学農学部演習林報告   2021赤外線センサーカメラで観察された鹿児島県本土の連続林と分断林を利用する哺乳類と鳥類．Reviewed

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    Authorship：Last author,　Corresponding author  

  • KAWANISHI Motohiro, SAKOU Haruhi, AIBA Shin-ichiro, FUJITA Shiho, UGAWA Shin, EIMURA Naoko, TAGANE Shuichirou, MIYAMOTO Junko .  Relationships between clear cutting history and/or microtopography and species diversity in the laurel forest of Amami-Oshima Island, a World Natural Heritage candidate, Kagoshima, Japan ―Kagoshima University Satsunan Islands Forest Ecosystem Research Group― .  Annual Report of Pro Natura Foundation Japan30 ( 0 ) 6 - 24   2021

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    Language：English   Publisher：Pro Natura Foundation Japan  

    <p>We have established ecological research plots in the laurel forests of Amami-Oshima Island and Tokunoshima Island, which are candidates for World Natural Heritage sites, and are constructing a monitoring system for flora and fauna. In this study, we conducted a survey to understand the relationship between clear cutting history and/or microtopography and species diversity mainly in the forest area outside the national forest where ecological knowledge is scarce in the laurel forest of Amami-Oshima. As a result, we found that although laurel forest in the upper slope area near the ridge and the lower slope area facing the deep valley had some common species, there were some species with distinctly different distribution patterns. In particular, many species of forest floor herbs, such as ferns and orchids, were distributed in the lower slope area. In addition, many epiphytic plants which included many endangered species were found in the unlogged forest areas. The relationships between number of sites and the cumulative number of species showed that the species composition of the unlogged forests in the lower slope area differed greatly between forest stand, suggesting that beta diversity contributed significantly to the overall species diversity. On the other hand, some deciduous trees had a biased distribution in the logged areas, and some tree and shrub species preferred in the upper slope areas such as ridges. These results suggest that in order to maintain the species diversity of plant species in the entire watershed, it is essential to have a habitat on each microtopography of slope from the ridge to the valley.</p>

    DOI： 10.32215/pronatura.30.0_6

  • 安藤温子, 栄村奈緒子, 出口智広 .  小笠原諸島におけるジュウイチHierococcyx hyperythrusの初記録 .  日本鳥学会誌   2020.4小笠原諸島におけるジュウイチHierococcyx hyperythrusの初記録Reviewed

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.3838/jjo.69.105

  • Honjo MN, Emura N, Kawagoe T, Sugisaka J, Kamitani M, Nagano AJ, Kudoh H .  Seasonality of interactions between a plant virus and its host during persistent infection in a natural environment .  The ISME Journal   2019.10Seasonality of interactions between a plant virus and its host during persistent infection in a natural environmentReviewed

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Ito T, Nishio H, Tarutani Y, Emura N, Honjo MN, Toyoda A, Fujiyama A, Kakutani T, Kudoh H .  Seasonal Stability and Dynamics of DNA Methylation in Plants in a Natural Environment .  Genes   2019.7Seasonal Stability and Dynamics of DNA Methylation in Plants in a Natural EnvironmentReviewed

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    Language：English   Publishing type：Research paper (scientific journal)  

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MISC

  • クサトベラの種子散布に関わる果実二型の原因遺伝子のスクリーニング．

    榮村奈緒子

    生態学研究センターニュース   148   18 - 18   2021

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    Authorship：Lead author  

Presentations

  • 榮村奈緒子，池田裕作，村中智明，畑邦彦，藤田志歩，鵜川信   奄美大島における自動録音機を用いた夜間の鳥類モニタリング  

    第77回九州森林学会  2021 

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    Event date： 2021.10 - 2021.11

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 畑邦彦，河南秀亮，内村瑞穂，榮村奈緒子   吹上浜海岸クロマツ林における地上性キノコ各種の子実体発生条件  

    第77回九州森林学会  2021 

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    Event date： 2021.10 - 2021.11

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 栄村奈緒子, 古本良, 内貴章世, 梶田忠, 工藤洋   クサトベラのニ型間および環境間で果実形態に違いが生じる要因  

    日本生態学会第67回全国大会 

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    Event date： 2020.3

    Language：Japanese   Presentation type：Poster presentation  

  • 吉元弘祐, 栄村奈緒子, 畑 邦彦   鹿児島県の遷移段階の異なる林分におけるFrankia根粒の着生状況  

    第75回九州森林学会大会 

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    Event date： 2019.10

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 繁昌 慶, 畑 邦彦, 榮村奈緒子   鹿児島におけるノネコ食性の季節変動と地域変動  

    九州森林学会 

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    Event date： 2019.10

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 佐藤逸史, 大石圭太, 畑 邦彦, 榮村奈緒子   鹿児島県内における野生鳥獣の生息状況  

    第75回九州森林学会大会 

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    Event date： 2019.10

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 松尾綾乃, 畑 邦彦, 榮村奈緒子   桜島と新島における鳥類相の比較－ウチヤマセンニュウの繁殖状況に着目して－  

    第75回九州森林学会大会 

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    Event date： 2019.10

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 榮村奈緒子, 古本 良, 内貴章世, 梶田 忠, 工藤 洋   海岸植物クサトベラの果実二型－鳥による種子散布能力の評価－   International conference

    第75回九州森林学会大会 

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    Event date： 2019.10

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 榮村奈緒子   海岸植物クサトベラの種子散布に関わる果実二型の研究   Invited

    動物・植物・生態三学会合同鹿児島例会 

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    Event date： 2019.7

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

  • 梶田結衣・山本崇・栄村奈緒子・井村信弥・石垣圭一・堤ひとみ・Alison KS WEE・高山浩司・梶田忠   汎熱帯海流散布植物ナガミハマナタマメの種内と近縁種間の生殖的隔離  

    日本植物分類学会第18回大会 

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    Event date： 2019.3

    Language：Japanese   Presentation type：Poster presentation  

  • 本庄三恵, 村中智明, 伊藤佑, 西尾治幾, 榮村奈緒子, 工藤洋   植物における季節的な前歴環境による直接・間接プライミング  

    日本生態学会第66回全国大会 

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    Event date： 2019.3

    Language：Japanese   Presentation type：Poster presentation  

  • 榮村奈緒子、内貴章世、梶田忠、吉永新、高部圭司、本庄三恵、工藤洋   クサトベラの種子散布に関わる果実二型をもたらす形態的差異と遺伝基盤  

    2018年度（第50回）　種生物学シンポジウム 

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    Event date： 2018.12

    Language：Japanese   Presentation type：Poster presentation  

  • 本庄三恵, 永野惇, 川越哲博, 杉阪次郎, 榮村奈緒子, 神谷麻梨, 工藤洋   季節環境がもたらすウイルス―宿主の長期共存機構  

    2018年度（第50回）　種生物学シンポジウム 

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    Event date： 2018.12

    Language：Japanese   Presentation type：Poster presentation  

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Research Projects

  • 種子散布に関する果実二型の維持機構の解明

    Grant number：22K06375  2022.4 - 2026.3

    日本学術振興会  科学研究費補助金  基盤研究C

    榮村 奈緒子

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    Grant type：Competitive

    Grant amount：\4160000 （ Direct Cost: \3200000 、 Indirect Cost：\960000 ）

  • 河川を利用する鳥類の季節移動と遺伝的集団構造の両方からみた国内河川の連結性の検討

    Grant number：20K12255  2020.4 - 2023.3

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    笠原 里恵, 榮村 奈緒子, 東 信行, 森本 元, 西海 功

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    Grant amount：\4420000 （ Direct Cost: \3400000 、 Indirect Cost：\1020000 ）

    日本の河川の砂礫地で繁殖する代表的な鳥類である、イカルチドリとイソシギについて、渡り経路と越冬地、およびそこでの利用環境を明らかにするために、2021年4－6月に、調査地である北海道の十勝川、青森県の平川および長野県の千曲川で繁殖調査と捕獲調査を行い、合計18羽のイカルチドリと2羽のイソシギに色足輪での標識とGPS(PinPoint-10および50)を装着することができた。PinPoint-50は10よりも記録できる地点数が多く、詳細な移動を明らかにできる機種である。また、2020年に装着したうち3個体からGPSを回収することができた。
    回収したGPSデータから、イカルチドリは年間を通して河川に依存している可能性が高く、また一部の個体は繁殖地に周年とどまったが、一部の個体は東北から中部地方まで移動していることが示され、季節的な移動距離も個体によって大きく異なることが明らかとなってきた。
    併せて2020年までに得られた鹿児島県、青森県、長野県のイカルチドリの血液試料からDNA分析を行ており、間もなくプライマーを確立できる段階である。DNAを用いて遺伝的構造の分析を行う。
    2020年に引き続き、新型コロナウィルスの流行状態を鑑みて、いずれの地域においても調査日数は最低限に設定した。また、調査時期に河川の増水が生じるなど、北海道のイカルチドリとイソシギ、また他地域のイソシギについては、血液試料を得ることが難しかった。したがって、北海道での2種の調査および各地域でのイソシギの調査については2022年に引き継いで行う予定である。

  • クサトベラの種子散布に関わる果実二型の原因遺伝子のスクリーニング

    2020.4 - 2021.3

    京都大学生態学研究センター  国内共同研究 

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    共同研究a

  • 種子散布に関する果実形態の進化プロセスの解明

    2019.8 - 2020.3

    先進ゲノム支援（先進ゲノム解析研究推進プラットフォーム）  国内共同研究 

  • 種子散布に関する果実形態の進化プロセスの解明

    2018.4 - 2021.3

    科学研究費補助金  若手研究(B)

  • Elucidation of the evolutionary process of fruit morphology related to seed dispersal

    Grant number：18K14779  2018.4 - 2021.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Early-Career Scientists

    Emura Naoko

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    Grant amount：\4160000 （ Direct Cost: \3200000 、 Indirect Cost：\960000 ）

    Coastal shrub Scaevola taccada has the inter-individual fruit dimorphism of a dispersal-related two fruit morphs. Namely, the individuals either produce fruits with a corky mesocarp, or with a pulpy mesocarp, referred to as cork and pulp morphs, respectively. In this study, we aimed to clarify the molecular differences between the two morphs. Comparative transcriptome analysis revealed differences in the expression levels of genes involved in lignin biosynthesis between the two morphs in fruits after 15 days of flowering. In addition, we have determined the whole genome sequence of one type of the first generation of self-built cork in Iriomote Island. Using this sequence as a reference sequence, we are analyzing it using the QTL-seq method, one of the whole genome linkage analysis methods, and comparing the sequences between the two types.

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