Updated on 2026/03/26

写真a

 
OKUNO SEIYA
 
Organization
Graduate School of Science Department of Biology Assistant Professor
School of Science Department of Biology
Title
Assistant Professor
Affiliation
Institute of Science

Position

  • Graduate School of Science Department of Biology 

    Assistant Professor  2024.01 - Now

  • School of Science Department of Biology 

    Assistant Professor  2024.01 - Now

Degree

  • 博士（理学） （ Osaka City University ）

Research Areas

  • Life Science / Evolutionary biology

  • Life Science / Ecology and environment

  • Life Science / Biodiversity and systematics

Research Interests

  • 進化

  • 群集系統

  • 熱帯雨林

  • 交雑

Professional Memberships

  • 日本熱帯生態学会

    2017.04 - Now

  • 日本生態学会

    2017.03 - Now

Committee Memberships (off-campus)

  • 日本生態学会近畿地区会   会計  

    2024.01 - 2025.12 

Job Career (off-campus)

  • 酪農学園大学   非常勤講師

    2024.04 - 2024.09

  • Osaka Metropolitan University   Graduate School of Science Department of Biology

    2024.01 - Now

  • Osaka Metropolitan University   Graduate School of Science

    2023.04 - 2023.12

  • Osaka Sangyo University   Faculty of Design Technology Department of Environmental Science and Technology

    2022.09 - 2023.01

  • Osaka Sangyo University   Faculty of Design Technology Department of Environmental Science and Technology

    2020.09 - 2021.01

Papers

  • Repeated evolution of cooperative breeding and life history traits in Lake Tanganyika cichlids.

    Satoh S, Okuno S, Ito T, Frommen JG, Saeki T, Hori M, Hidaka R, Inoue R, Yoshio Y, Morita M, Kutsukake N, Kohda M, Tashiro F, Awata S

    Communications biology   2026.03

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  • Mouth- and substrate-brooding cichlids display contrasting trade-offs and diverse evolutionary pathways of egg investment

    Shun Satoh, Takeshi Ito, Will Sowesby, Masaya Morita, Nobuyuki Kutsukake, Fumihito Tashiro, Michio Hori, Satoshi Awata, Seiya Okuno

    The American Naturalist   2025.10（ ISSN:0003-0147 ） （ eISSN:1537-5323 ）

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1086/739303

  • Ghost Fishing Threatens Biodiversity in an African Great Lake Reviewed International coauthorship

    Shun Satoh, Tetsumi Takahashi, Seiya Okuno, Kento Kawasaka, Mabo Lwabanya

    Fisheries   49 ( 5 )   211 - 219   2024（ ISSN:03632415 ） （ eISSN:1548-8446 ）

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    Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

    We conducted an investigation into ghost fishing, a phenomenon in which abandoned fishing equipment remains operational for extended durations, in the southern region of Lake Tanganyika, Republic of Zambia. The perils associated with ghost fishing have achieved international recognition; however, there exists a conspicuous dearth of scholarly investigations in particular regions, notably inland aquatic environments and developing countries. Employing scuba diving for field observations, we discovered that ghost fishing was solely evident in monofilament nylon nets, despite the presence of four different net types in the littoral area of the lake. Notably, endemic crabs Platythelphusa armata and P. maculata from Lake Tanganyika constituted 65.2% of the organisms captured by abandoned nets, with the remainder comprising various fish species. The number of captured organisms exhibited a dependence on the interplay between the length and mesh size of the abandoned nets, indicating that the risk of ghost fishing is heightened when both net and mesh size are substantial. Furthermore, we encountered predatory Spiny Eels Mastacembelus moorii ensnared in nets around their jaws and teeth. Intriguingly, the digestive tract of one of the Spiny Eels contained a partially digested cichlid species entangled in the same nets, strongly suggesting the occurrence of secondary ghost fishing.

    DOI： 10.1002/fsh.11061

  • Fertilization modes and the evolution of sperm characteristics in marine fishes: Paired comparisons of externally and internally fertilizing species Reviewed

    Takeshi Ito, Masaya Morita, Seiya Okuno, Kazuo Inaba, Kogiku Shiba, Hiroyuki Munehara, Yasunori Koya, Mitsuo Homma, Satoshi Awata

    Ecology and Evolution   12 ( 12 )   e9562   2022.12（ ISSN:2045-7758 ） （ eISSN:2045-7758 ）

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    Publishing type：Research paper (scientific journal)   Kind of work：Joint Work   International / domestic magazine：International journal  

    DOI： 10.1002/ece3.9562

    PubMed

    Other URL： https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.9562

  • Community phylogeny and spatial scale affect phylogenetic diversity metrics in a species‐rich rainforest in Borneo Reviewed

    Seiya Okuno, Tingting Yin, Satoshi Nanami, Shuhei Matsuyama, Koichi Kamiya, Sylvester Tan, Stuart J. Davies, Mohizah Mohamad, Takuo Yamakura, Akira Itoh

    Ecology and Evolution   12 ( 11 )   e9536   2022.11（ ISSN:2045-7758 ）

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    Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/ece3.9536

    PubMed

  • Reproduction of marble-mouth frogfish Lophiocharon lithinostomus (Lophiiformes, Antennariidae) and the evolution of parental care among frogfishes

    Toshiaki Mori, Risa Murai, Takeshi Ito, Seiya Okuno, Yuya Kobayashi, Tomoyuki Uehara, Shun Satoh

    2022.04

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.3897/arphapreprints.e84895

  • Genetic Diversity and Structure of Apomictic and Sexually Reproducing Lindera Species (Lauraceae) in Japan Reviewed

    Mizuho Nakamura, Satoshi Nanami, Seiya Okuno, Shun K. Hirota, Ayumi Matsuo, Yoshihisa Suyama, Hayato Tokumoto, Shizue Yoshihara, Akira Itoh

    Forests   12 ( 2 )   227 - 227   2021.02（ eISSN:1999-4907 ）

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    Publishing type：Research paper (scientific journal)  

    Research Highlights: genetic diversity in populations were compared among related shrub species with different reproductive systems. Background and Objectives: Lindera species are dioecious trees or shrubs that produce seeds by mating of males and females. To evaluate the importance of genetic diversity for the persistence of natural populations, we compared genetic information among four Lindera species in Japan. Three are dioecious shrubs (Lindera praecox, Lindera umbellata, and Lindera obtusiloba) that produce seeds by sexual reproduction. The remaining species, Lindera glauca, reproduces by apomixis; only female plants are found in Japan. Materials and Methods: all four species were sampled across a wide geographic area, from Tohoku to Kyushu, Japan. Single nucleotide polymorphisms (SNPs) were detected by multiplexed ISSR genotyping by sequencing (MIG-seq) and the resulting genetic diversity parameters were compared among populations. Results: in all sexually reproducing species, the values of observed heterozygosity were close to the expected ones and the inbreeding coefficients were nearly 0. These results were supposed to be caused by their obligate outcrossing. The genetic difference increased, in ascending order, between a mother plant and its seeds, within populations, and across geographic space. We observed a substantial geographic component in the genetic structure of these species. For L. glauca, the genetic difference between a mother and its seeds, within populations, and across space were not significantly different from what would be expected from PCR errors. Genetic diversity within and among populations of L. glauca was extremely low. Conclusions: apomixis has the advantage of being able to found populations from a single individual, without mating, which may outweigh the disadvantages associated with the extremely low genetic diversity of L. glauca. This may explain why this species is so widely distributed in Japan. Provided that the current genotypes remain suited to environmental conditions, L. glauca may not be constrained by its limited genetic diversity.

    DOI： 10.3390/f12020227

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Presentations

  • The comparison of genetic diversity in three populations of Myrsine stolonifera in Nara Prefecture Domestic conference

    2026.03 

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    Presentation type：Poster presentation  

  • アカネ科サンタンカのゲノム解読とゲノム進化 Domestic conference

    瓦谷丈琉, 奥野聖也, 伊東明

    第73回日本生態学会大会  2026.03  日本生態学会

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    Presentation type：Poster presentation  

    Venue：京都国際会館  

  • 西日本に分布するスベリヒユ複合体の種子形態 Domestic conference

    山下大月, 奥野聖也, 伊東明

    第73回日本生態学会大会  2026.03  日本生態学会

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    Presentation type：Poster presentation  

    Venue：京都国際会館  

  • 日本の在来、外来、雑種タンポポの種子内生菌相 Domestic conference

    金澤涼夏, 城垣 徹, 瓦谷 丈琉, 奥野 聖也, 伊東 明

    第73回日本生態学会大会  2026.03  日本生態学会

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    Presentation type：Poster presentation  

    Venue：京都国際会館  

  • 日本産カエデ属樹種における葉形態および紅葉の色と生育環境との関係 Domestic conference

    加藤拓磨, 名波哲, 奥野聖也, 永野惇, 伊東明

    第73回日本生態学会大会  2026.03  日本生態学会

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    Presentation type：Poster presentation  

    Venue：京都国際会館  

  • 日本産イヌタデ属の系統関係と各種の気候ニッチ Domestic conference

    小倉唯, 奥野聖也, 城垣徹, 厚井聡, 名波哲, 伊東明

    第73回日本生態学会大会  2026.03  日本生態学会

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    Presentation type：Poster presentation  

    Venue：京都国際会館  

  • Do facial patterns indicate relatedness? A study of the individuality of facial patterns in a cooperatively breeding cichlid Domestic conference

    2025.11 

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    Presentation type：Oral presentation (general)  

  • ランビル国立公園に同所的共存する Ixora 属の種間交雑とマイクロハビタットニッチシフト International coauthorship Domestic conference

    瓦谷丈琉, 奥野聖也, 駒田夏生, 水野尊文, Sylvester TAN, Mohizha MOHAMAD, Melvin T GUMAL, 徳本勇人, 吉原静恵, 伊東明

    第35回日本熱帯生態学会年次大会  2025.06  日本熱帯生態学会

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    Presentation type：Poster presentation  

    Venue：九州大学伊都キャンパス  

  • Evaluation of the utility of DNA barcodes for identification of tropical rainforests plants in Sarawak International conference

    Seiya OKUNO

    SATREPS-PUBS Workshop 2025  2025.05 

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    Presentation type：Symposium, workshop panel (nominated)  

    Venue：Imperial Hotel, Miri, Sarawak  

  • 奈良県のツルマンリョウ集団の構造と遺伝的多様性 Domestic conference

    丸田吏紗, 小倉裕二郎, 徳本勇人, 吉原静恵, 奥野聖也, 伊東 明

    地域自然史と保全研究大会2025 関西自然保護機構（KONC）2025年大会  2025.03  関西自然保護機構・大阪市立自然史博物館

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    Venue：大阪市立自然史博物館  

  • Differences in inflorescence architecture according to sex expression in Japanese maples Domestic conference

    2025.03 

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    Presentation type：Poster presentation  

  • Estimating effective population size dynamics of Ixora in Borneo using MIG-seq data. International coauthorship Domestic conference

    2025.03 

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    Presentation type：Poster presentation  

  • 生活史理倫再考：タンガニイカ湖産カワスズメ科魚類における卵サイズの進化経路 International coauthorship Domestic conference

    佐藤駿 , 伊藤岳 , Sowesby Will , 守田昌哉 , 沓掛展之 , 田城文人 , 堀道雄 , 安房田智司 , 奥野聖也

    2024年度日本魚類学会年会  2024.09  日本魚類学会

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    Presentation type：Oral presentation (general)  

    Venue：福岡工業大学  

  • 海産魚類では受精様式の進化が精子形質の「ばらつき」に関係する Domestic conference

    伊藤岳, 守田昌哉, 奥野聖也, 稲葉一男, 柴小菊, 古屋康則, 本間光雄, 安房田智司

    2024年度日本魚類学会年会大会  2024.09  日本魚類学会

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    Presentation type：Oral presentation (general)  

    Venue：福岡工業大学  

  • Application of Genetic Methods and Next-generation Sequencing to the Ecological Study of Tree Community Invited International conference

    Seiya OKUNO

    2024.08 

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    Presentation type：Symposium, workshop panel (nominated)  

    Venue：Sarawak Biodiversity Center, Sarawak, Malaysia  

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Grant-in-Aid for Scientific Research

  • 熱帯雨林樹木のニッチ多様化における過去の交雑と超越分離

    Grant-in-Aid for Early-Career Scientists  2026

  • 熱帯雨林樹木のニッチ多様化における過去の交雑と超越分離

    Grant-in-Aid for Early-Career Scientists  2025

  • 熱帯雨林樹木のニッチ多様化における過去の交雑と超越分離

    Grant-in-Aid for Early-Career Scientists  2024

Charge of on-campus class subject

  • 自然誌機能生物学演習1B

    2025   Intensive lecture   Graduate school

  • 自然誌機能生物学演習2B

    2025   Intensive lecture   Graduate school

  • 海外特別研究1

    2025   Intensive lecture   Graduate school

  • 海外特別研究2

    2025   Intensive lecture   Graduate school

  • 生物学特別研究1B

    2025   Intensive lecture   Graduate school

  • 生物学特別研究2B

    2025   Intensive lecture   Graduate school

  • 生物学特別演習1B

    2025   Intensive lecture   Graduate school

  • 生物学特別演習2B

    2025   Intensive lecture   Graduate school

  • 専門生物学実験2

    2025   Intensive lecture   Undergraduate

  • 生物学卒業演習B

    2025   Intensive lecture   Undergraduate

  • 生物学卒業研究B

    2025   Intensive lecture   Undergraduate

  • 専門生物学演習

    2025   Intensive lecture   Undergraduate

  • 特別研究

    2025   Intensive lecture   Undergraduate

  • 海外特別研究

    2025   Intensive lecture   Undergraduate

  • 自然誌機能生物学ゼミナール

    2025   Intensive lecture   Graduate school

  • 自然誌機能生物学特別演習

    2025   Intensive lecture   Graduate school

  • 海外特別研究3

    2025   Intensive lecture   Graduate school

  • 海外特別研究4

    2025   Intensive lecture   Graduate school

  • 海外特別研究5

    2025   Intensive lecture   Graduate school

  • 生物学特別研究3B

    2025   Intensive lecture   Graduate school

  • 生物学特別研究4B

    2025   Intensive lecture   Graduate school

  • 生物学特別研究5B

    2025   Intensive lecture   Graduate school

  • 生物学実験A

    2025   Weekly class   Undergraduate

  • 生物学特別研究3A

    2025   Intensive lecture   Graduate school

  • 生物学特別研究4A

    2025   Intensive lecture   Graduate school

  • 生物学特別研究5A

    2025   Intensive lecture   Graduate school

  • 自然誌機能生物学演習1A

    2025   Intensive lecture   Graduate school

  • 自然誌機能生物学演習2A

    2025   Intensive lecture   Graduate school

  • 生物学特別研究1A

    2025   Intensive lecture   Graduate school

  • 生物学特別研究2A

    2025   Intensive lecture   Graduate school

  • 生物学特別演習1A

    2025   Intensive lecture   Graduate school

  • 生物学特別演習2A

    2025   Intensive lecture   Graduate school

  • 生物学の潮流

    2025   Weekly class   Undergraduate

  • 野外実習

    2025   Intensive lecture   Undergraduate

  • 生物体系学4

    2025   Weekly class   Undergraduate

  • 専門生物学実験1

    2025   Weekly class   Undergraduate

  • 生物学卒業演習A

    2025   Intensive lecture   Undergraduate

  • 生物学卒業研究A

    2025   Intensive lecture   Undergraduate

  • 専門生物学演習

    2024   Intensive lecture   Undergraduate

  • 特別研究

    2024   Intensive lecture   Undergraduate

  • 自然誌機能生物学ゼミナール

    2024   Intensive lecture   Graduate school

  • 自然誌機能生物学特別演習

    2024   Intensive lecture   Graduate school

  • 海外特別研究3

    2024   Intensive lecture   Graduate school

  • 海外特別研究4

    2024   Intensive lecture   Graduate school

  • 海外特別研究5

    2024   Intensive lecture   Graduate school

  • 生物学特別研究3B

    2024   Intensive lecture   Graduate school

  • 生物学特別研究4B

    2024   Intensive lecture   Graduate school

  • 生物学特別研究5B

    2024   Intensive lecture   Graduate school

  • 自然誌機能生物学演習1B

    2024   Intensive lecture   Graduate school

  • 自然誌機能生物学演習2B

    2024   Intensive lecture   Graduate school

  • 海外特別研究1

    2024   Intensive lecture   Graduate school

  • 海外特別研究2

    2024   Intensive lecture   Graduate school

  • 生物学特別研究1B

    2024   Intensive lecture   Graduate school

  • 生物学特別研究2B

    2024   Intensive lecture   Graduate school

  • 専門生物学実験2

    2024   Intensive lecture   Undergraduate

  • 生物学特別研究3A

    2024   Intensive lecture   Graduate school

  • 生物学特別研究4A

    2024   Intensive lecture   Graduate school

  • 生物学特別研究5A

    2024   Intensive lecture   Graduate school

  • 生物学実験A

    2024   Weekly class   Graduate school

  • 自然誌機能生物学演習1A

    2024   Intensive lecture   Graduate school

  • 自然誌機能生物学演習2A

    2024   Intensive lecture   Graduate school

  • 生物学特別研究1A

    2024   Intensive lecture   Graduate school

  • 生物学特別研究2A

    2024   Intensive lecture   Graduate school

  • 生物学の潮流

    2024   Weekly class   Undergraduate

  • 生物体系学4

    2024   Weekly class   Undergraduate

  • 専門生物学実験1

    2024   Weekly class   Undergraduate

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Charge of off-campus class subject

  • 植生保全学

    2024.04
    -
    2024.09
    Institution：Rakuno Gakuen University

Faculty development activities

  • 新任FD研修受講  2024