KOBAYASHI Shun

写真a

Title

Associate Professor

Researcher Number(JSPS Kakenhi)

60838150
4 6 8
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Current Affiliation Organization 【 display / non-display 】

  • Concurrently   University of the Ryukyus   Graduate School of Engineering and Science   Chemistry, Biology and Marine Science   Assistant Professor  

  • Duty   University of the Ryukyus   Faculty of Science   Chemistry, Biology and Marine Science   Associate Professor  

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University 【 display / non-display 】

  • 2007.04
    -
    2011.03

    University of the Ryukyus   Faculty of Science   Graduated

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Graduate School 【 display / non-display 】

  • 　
    -
    2017.03

    University of the Ryukyus  Graduate School, Division of Science and Engineering  Doctor's Course (second term)  Completed

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Affiliated academic organizations 【 display / non-display 】

  • 2022.09
    -
    Now
     

    Mammalogical Society of Japan    Editor

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Research Areas 【 display / non-display 】

  • Environmental Science/Agriculture Science / Social-ecological systems

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Acquisition of a qualification 【 display / non-display 】

  • Junior High School Teacher Specialization License

  • High School Teacher Specialization License (first and second kind,specialization)

  • Museum Attendant

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Published Papers 【 display / non-display 】

  • Tree cavity usage patterns by the cavity-nesting rat Diplothrix legata in a subtropical forest

    Teppei Higashi, Shun Kobayashi

    Journal of Mammalogy ( Oxford Academic )    2026.06 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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      DOI

  • Flower visitors and floral traits of two sympatric Mucuna (Fabaceae) species on Iriomote-jima Island in the Ryukyu Archipelago, Japan

    Kobayashi Shun, Tsuruta Moe, Denda Tetsuo, Izawa Masako

    Journal of Plant Research ( Springer )  139   467 - 478   2026.04 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

    　View Summary

    Closely related species with sympatric distributions often evolve mechanisms of reproductive isolation. In Mucuna species lacking autonomous self-pollination, animals that trigger explosive flower opening are considered the primary pollinators. Nevertheless, no comparative studies have examined pollination mechanisms among sympatric species within the same subgenus of Mucuna. In this study, we aimed to clarify the floral traits and pollinators of Mucuna membranacea Hayata and M. gigantea (Willd.) DC. (Fabaceae), which co-occur on Iriomote-jima Island, Japan. Camera trap surveys showed that the Yaeyama flying fox (Pteropus dasymallus yayeyamae) visited flowers and caused explosive flower openings, whereas birds and insects consumed nectar without triggering an explosive opening. Bagging experiments showed that neither species set fruit autonomously, indicating a lack of autonomous self-pollination. These results suggest that the primary pollinator of both species is P. d. yayeyamae. Measurements of flower morphology revealed differences in flower length and stigma position between the two species, suggesting that pollen attachment sites on the pollinator and stigma contact position differ, potentially reducing reproductive interference. Additionally, nectar volume, concentration, and flower-opening force differed between the two species, although their effects on pollination remain to be investigated.

  • Foraging of endangered and endemic plant species by a non-native sika deer found in the northern part of Okinawa-jima Island, Japan: evidence from fecal DNA metabarcoding analysis

    Shun Kobayashi, Hitomi Asato, Katsushi Nakata, Junco Nagata, Yuya Watari

    MAMMAL STUDY ( Bio One )  51 ( 2 ) 199 - 204   2026.03 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

    　View Summary

    In the northern part of Okinawa-jima Island, a Natural World Heritage site inhabited by many endangered and endemic species, a non-native sika deer Cervus nippon was sighted on October 21, 2024. Two days later, a sika deer fecal pellet was collected from the forest floor near the first observed location. In this study, DNA metabarcoding analysis was performed on feces to identify the plant species consumed by sighted individuals to consider the potential impacts of sika deer when established in this ecosystem. Analysis of five fecal samples of a single fecal pellet revealed the presence of 24 angiosperm species across 18 families, and four fern species across three families. Among these, two species are endemic to the Ryukyu Archipelago, including one classified as Critically Endangered (CR) on the Red List of Ministry of the Environment, Japan. These results indicate that establishment of sika deer populations in this region may have a significant impact on the survival of endangered species and ecosystems. Therefore, it is desirable to promptly remove sighted individuals and establish a system to prevent further invasions.

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  • Observations of the feeding behavior on the fragrant screw-pine (Pandanus odorifer) and roadkill cases, and a new finding on the land hermit crab (Coenobita cavipes) as a prey species in the Ryukyu long-furred rat (Diplothrix legata)

    Yusuke Maruta, Kazuki Tsuji, Yukuto Sato, Shun Kobayashi, Nobuhiko Kotaka, Kaori Tsurui

      66 ( 1 ) 45 - 56   2026.02 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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  • Volatile compounds of mammal-pollinated <i>Mucuna macrocarpa</i> (Fabaceae) based on distribution area in Japan, Taiwan, and Thailand

    Kobayashi, S; Watanabe, K; Kuraya, E; Touyama, A; Liao, CC; Panha, S; Nantarat, N; Denda, T; Izawa, M

    PLANT SPECIES BIOLOGY ( Plant Species Biology )  40 ( 5 ) 517 - 523   2025.06 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

    　View Summary

    Abstract In this study, we aimed to identify the variation in the volatile compounds of Mucuna macrocarpa (Fabaceae), a species pollinated by various mammals in different regions. Volatile compounds of M. macrocarpa were collected from four regions using the dynamic head‐space method. Collected compounds were analyzed using gas chromatography–mass spectrometry. Combined, 112 volatile compounds were identified, with the number per flower ranging from 14 to 63 compounds in each flower. Of these, 1,3‐pentadiene was the most dominant compound in all flowers across all regions, accounting for 89.2%–98.5% of the total peak area. Several flowers did not contain the sulfur compounds reported to attract mammals, particularly nectar‐feeding bats. The results indicate that this plant attracts a diverse range of mammals without changing its primary compounds. Despite the absence of certain known mammal‐attracting volatile compounds, 1,3‐pentadiene may still effectively attract a range of arboreal mammalian pollinators.

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      DOI Open Access

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Other Papers 【 display / non-display 】

  • Seawater tolerance of eggs and ecology of the stick insects

    Kobayashi S.

    The Nature and Insects   58 ( 3 ) 15 - 20   2023.03

     

  • Educational program as prevention measures of poaching of endangered turtles in the Ryukyu Archipelago ―Executive Committee of Symposium on Poaching of Endangered Turtles in Ryukyu Archipelago―

    IZAWA Masako, DENDA Tetsuo, TAMASHIRO Ayumu, KOBAYASHI Shun

    Annual Report of Pro Natura Foundation Japan ( Pro Natura Foundation Japan )  29 ( 0 ) 394 - 398   2020

     

    DOI CiNii Research

  • Non-flying mammal pollination in Asia

    Kobayashi Shun

    Honyurui Kagaku (Mammalian Science) ( The Mammal Society of Japan )  60 ( 2 ) 385 - 389   2020

     

    DOI CiNii Research

  • A report on the 3rd International Southeast Asian Bat Conference

    Kobayashi Shun

    Honyurui Kagaku (Mammalian Science) ( The Mammal Society of Japan )  55 ( 2 ) 323 - 325   2015

     

    DOI CiNii Research

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Academic Awards 【 display / non-display 】

  • 2023 Paper Award

    2023.09   Entomological Society of Japan   Effect of spraying behavior and body size on predators of the big head stick insect Megacrania tsudai (Phasmatodea: Phasmatidae)

    Winner: Kobayashi S, Takaoka C, Tanimoto H, Arimitsu S, Izawa M

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Grant-in-Aid for Scientific Research 【 display / non-display 】

  • Terrestrial mammal adaptation on islands through the case study of the Ryukyu Archipelago mammals

    Grant-in-Aid for Scientific Research(C)

    Project Year: 2023.04  -  2026.03 

    Direct: 3,700,000 (YEN)  Overheads: 4,810,000 (YEN)  Total: 1,110,000 (YEN)

  • Terrestrial mammal adaptation on islands through the case study of the Ryukyu Archipelago mammals

    Grant-in-Aid for Scientific Research(C)

    Project Year: 2023.04  -  2026.03 

    Direct: 3,700,000 (YEN)  Overheads: 4,810,000 (YEN)  Total: 1,110,000 (YEN)

  • Terrestrial mammal adaptation on islands through the case study of the Ryukyu Archipelago mammals

    Grant-in-Aid for Scientific Research(C)

    Project Year: 2023.04  -  2026.03 

    Direct: 3,700,000 (YEN)  Overheads: 4,810,000 (YEN)  Total: 1,110,000 (YEN)

  • Grant-in-Aid for Scientific Research(C)

    Project Year: 2022.04  -  2026.03 

    Direct: 3,200,000 (YEN)  Overheads: 4,160,000 (YEN)  Total: 960,000 (YEN)

  • Grant-in-Aid for Scientific Research(C)

    Project Year: 2022.04  -  2026.03 

    Direct: 3,200,000 (YEN)  Overheads: 4,160,000 (YEN)  Total: 960,000 (YEN)

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SDGs 【 display / non-display 】

  • 1) 世界自然遺産地域を含む琉球諸島における動物の生態および動物-植物相互作用の解明
    2) アジア域における哺乳類媒植物の送粉様式の解明

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Social Activity 【 display / non-display 】

  • 2025.02
    　
    　

  • 2024.12
    　
    　

  • 2024.12
    　
    　

  • 2024.11
    　
    　

  • 2024.02
    　
    　

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Media Coverage 【 display / non-display 】

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Academic Activities 【 display / non-display 】

  • [International contribution]

    小林峻・久保麦野・林昭次 

    2023
    -
    2025

    種別： Academic society, research group, etc. 

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