Updated on 2024/03/27

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 / Biodiversity and systematics

  • Life Science / Ecology and environment

  • Life Science / Evolutionary biology

Research Interests

  • 交雑

  • 熱帯雨林

  • 群集系統

  • 進化

Professional Memberships

  • 日本熱帯生態学会

    2017.04 - Now

  • 日本生態学会

    2017.03 - Now

Job Career (off-campus)

  • 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

  • Ghost Fishing Threatens Biodiversity in an African Great Lake

    2024 （ ISSN:03632415 ）

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    International / domestic magazine：International journal  

    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 ）

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    Publishing type：Research paper (scientific 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

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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