Matsumoto Akiko

写真a

Title

Professor

Researcher Number(JSPS Kakenhi)

80369206
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Current Affiliation Organization 【 display / non-display 】

  • Duty   University of the Ryukyus   Faculty of Global and Regional Studies   tourism and community design program   Professor  

  • Concurrently   University of the Ryukyus   Graduate School of Tourism Sciences  

  • Concurrently   University of the Ryukyus   Graduate School of Engineering and Science  

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Academic degree 【 display / non-display 】

  • Kyoto University -  Dr.

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External Career 【 display / non-display 】

  • 2010.04
    -
    2018.03

     

  • 2010.04
    -
    2024.03

     

  • 2012.10
    　
    　

     

  • 2017.04
    　
    　

     

  • 2018.04
    　
    　

     

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Research Interests 【 display / non-display 】

  • Human Evolution and Primate Models

  • Natural Tourism Resources and Human–Nature Relations

  • Evolution of Primate Social Behavior

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Research Areas 【 display / non-display 】

  • Life Science / Physical anthropology

  • Life Science / Ecology and environment

  • Humanities & Social Sciences / Tourism studies

  • Others / Others

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Acquisition of a qualification 【 display / non-display 】

  • Second Kind of High School Teacher License

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Research Theme 【 display / non-display 】

  • Comparative Study of Wound Healing Rates in Humans and Non-Human Animals: Evolutionary Perspectives

  • Collaborative Research on Sustainable Coexistence between Humans and Wildlife

  • Quantitative Analysis of Primate Group Behavior and Social Structure

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Published Papers 【 display / non-display 】

  • Erratum to “Inter-species differences in wound-healing rate: a comparative study involving primates and rodents” has been published online.

    Matsumoto-Oda A, Utsumi D, Takahashi K, Hirata S, Nyachieo A, Chai D, Jillani N, Raymond M.

    Proceedings of the Royal Society B Biological Sciences     2025 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

  • Inter-species differences in wound-healing rate: a comparative study involving primates and rodents.

    Matsumoto-Oda A, Utsumi D, Takahashi K, Hirata S, Nyachieo A, Chai D, Jillani N, Raymond M.

    Proceedings of the Royal Society B Biological Sciences     2025 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

    • Access this article
      DOI Open Access

  • How to treat mixed behavior segments in supervised machine learning of behavioral modes from inertial measurement data

    Resheff Y, Bensch H M, Zottl M, Harel R, Matsumoto-Oda A, Crofoot M, Gomez S, Börger L, Rotics S

    Moving Ecology   12 ( 44 )   2024.06 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

    　View Summary

    The application of supervised machine learning methods to identify behavioural modes from inertial measurements of bio-loggers has become a standard tool in behavioural ecology. Several design choices can affect the accuracy of identifying the behavioural modes. One such choice is the inclusion or exclusion of segments consisting of more than a single behaviour (mixed segments) in the machine learning model training data. Currently, the common practice is to ignore such segments during model training. In this paper we tested the hypothesis that including mixed segments in model training will improve accuracy, as the model would perform better in identifying them in the test data. We test this hypothesis using a series of data simulations on four datasets of accelerometer data coupled with behaviour observations, obtained from four study species (Damaraland mole-rats, meerkats, olive baboons, polar bears). Results show that when a substantial proportion of the test data are mixed behaviour segments (above ~ 10%), including mixed segments in machine learning model training improves the accuracy of classification. These results were consistent across the four study species, and robust to changes in segment length, sample size, and degree of mixture within the mixed segments. However, we also find that in some cases (particularly in baboons) models trained with mixed segments show reduced accuracy in classifying test data containing only single behaviour (pure) segments, compared to models trained without mixed segments. Based on these results, we recommend that when the classification model is expected to deal with a substantial proportion of mixed behaviour segments (> 10%), it is beneficial to include them in model training, otherwise, it is unnecessary but also not harmful. The exception is when there is a basis to assume that the training data contains a higher rate of mixed segments than the actual (unobserved) data to be classified—such a situation may occur particularly when training data are collected in captivity and used to classify data from the wild. In this case, excess inclusion of mixed segments in training data should probably be avoided.

  • Reduction of bitter taste receptor gene family in folivorous Colobines as compared with omnivorous Cercopithecines in Primates

    Hou M, Akhtar MS, Hayashi M, Ashino, Matsumoto-Oda A, Hayakawa T, Ishida T, Melin AD, Imai H, Kawamura S

    Primates   65   311 - 331   2024 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

    　View Summary

    Bitter taste perception is important in preventing animals from ingesting potentially toxic compounds. Whole-genome assembly (WGA) data have revealed that bitter taste receptor genes (TAS2Rs) comprise a multigene family with dozens of intact and disrupted genes in primates. However, publicly available WGA data are often incomplete, especially for multigene families. In this study, we employed a targeted capture (TC) approach specifically probing TAS2Rs for ten species of cercopithecid primates with diverse diets, including eight omnivorous cercopithecine species and two folivorous colobine species. We designed RNA probes for all TAS2Rs that we modeled to be intact in the common ancestor of cercopithecids (“ancestral-cercopithecid TAS2R gene set”). The TC was followed by short-read and high-depth massive-parallel sequencing. TC retrieved more intact TAS2R genes than found in WGA databases. We confirmed a large number of gene “births” at the common ancestor of cercopithecids and found that the colobine common ancestor and the cercopithecine common ancestor had contrasting trajectories: four gene “deaths” and three gene births, respectively. The number of intact TAS2R genes was markedly reduced in colobines (25–28 detected via TC and 20–26 detected via WGA analysis) as compared with cercopithecines (27–36 via TC and 19–30 via WGA). Birth or death events occurred at almost every phylogenetic-tree branch, making the composition of intact genes variable among species. These results show that evolutionary change in intact TAS2R genes is a complex process, refute a simple general prediction that herbivory favors more TAS2R genes, and have implications for understanding dietary adaptations and the evolution of detoxification abilities.

  • Sharing sleeping sites disrupts sleep but catalyses social tolerance and coordination between groups.

    Loftus C, Harel R, Ashbury AA, Núñez CL, Bidner L, Matsumoto-Oda A, Isbell LA, Crofoot MC.

    Proceedings of the Royal Society B Biological Sciences     2024 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

    • Access this article
      DOI Open Access

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Books 【 display / non-display 】

  • Behavioral Diversity in Chimpanzees and Bonobos

    Matsumoto-Oda A ( Part: Allotment Writing ,  Social relationships between cycling females and males in Mahale chimpanzees. )

    Cambridge University Press. p168-180  2002

  • All Apes Great and Small: Volume 1: African Apes

    Hosaka K, Nishida T, Hamai M, Matsumoto-Oda A, Uehara S ( Part: Allotment Writing ,  Predation of mammals by the chimpanzees of the Mahale Mountasins, Tanzania. )

    Kluwer Academic Publishers. p107-130  2001

  • Baboons: Behavior, Ecology and Taxonomy

    Matsumoto-Oda A, Van Rooy A, Palombit RA. ( Part: Allotment Writing ,  Shared use of sleeping sites and avoidance of daytime encounters in two neighboring baboon groups. )

    Cambridge University Press.  1900.01

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Other Papers 【 display / non-display 】

  • Preparatory research on wildlife tourism at private conservancy in Kenya

      5   11 - 17   2013

     

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Media Coverage 【 display / non-display 】

  • NHK「はなしちゃお！」  TV or radio program

    NHK  2024.2

  • NHK ワイルドライフ 「アフリカケニアの高原 サバンナのヒヒ 気遣いが力に勝てるか？」  TV or radio program

    NHK  2017.5

    Author： Myself 

  • NHK ダーウィンが来た！ 349回「“強さ”vs“優しさ” アヌビスヒヒ 恋の駆け引き」  TV or radio program

    NHK  2014.1

    Author： Myself 

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Academic Activities 【 display / non-display 】

  • 2023.10
    　
    　

  • 2020.4
    -
    2024.3

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