理数情報教育系

乾 陽子

イヌイ ヨウコ  (Yoko Inui)

基本情報

所属
大阪教育大学 教育学部 教育協働学科 理数情報講座 准教授
学位
博士(理学)(京都大学)
修士(理学)(京都大学)

J-GLOBAL ID
200901079262351983
researchmap会員ID
5000026336

外部リンク

論文

 26
  • 長谷川諒, 生田享介, 乾陽子
    大阪教育大学紀要 人文社会科学・自然科学 70 2022年  査読有り
  • Atsuki Nakai, Yoko Inui, Kei Tokita
    arXiv:2004.01966 2020年  
  • 中西 晃, 東 若菜, 田中 美澄枝, 宮崎 祐子, 乾 陽子
    日本生態学会誌 68(2) 125-139 2018年  査読有り
    林冠生物学は、生物多様性や生態系機能が局在する森林の林冠において、多様な生物の生態や相互作用、生態学的な機能やプロセスの理解を目指す学問である。林冠は高所に存在し複雑な構造を有するため、林冠生物学研究の飛躍的な進展は1980年代以降の林冠アクセス手段の発達に拠るところが大きい。様々な林冠アクセス手段の中でも、ロープテクニックを駆使して樹上にアクセスするツリークライミングは道具を手軽に持ち運べることから移動性に優れ、対象木に反復してアクセスすることが可能である。また、林冠クレーンや林冠ウォークウェイなどの大型アクセス設備に比べて経済的であるという利点が活かされ、林冠生物学研究に幅広く適用されてきた。近年では、ツリークライミングの技術や道具の発展によって安全性や作業効率の向上が図られており、今後ますます活用されることが期待されている。本稿では、ツリークライミングを用いた林冠生物学の研究例を紹介しつつ、樹上調査における林冠アクセス手段としてのツリークライミングの有用性を示す。さらに、ツリークライミングを用いた林冠生物学研究の今後の展望および課題について議論する。移動性、経済性、撹乱性に優れたツリークライミングは、場所の制限を受けないため、あらゆる森林での林冠生物学研究において今後も重要な役割を担うと考えられる。また、他の林冠アクセス手段や測定機器と併用することでさらなる進展が期待される。一方、安全かつ有効なツリークライミングが普及するためには、研究調査以外の領域も含めたツリークライミング・ネットワークの形成と情報共有のためのプラットフォームづくりが急務である。
  • Eri Yamasaki, Yoko Inui, Shoko Sakai
    EVOLUTIONARY BIOLOGY 43(3) 407-413 2016年9月  査読有り
    Many plants have mutualistic relationships with ants, whereby plants provide food and/or nesting sites for the symbiotic ants, and in turn the ants protect the host plants by excluding herbivores. While the ants are useful as guards, they may negatively affect host reproduction by excluding pollinators. Here we studied this potential conflict in the myrmecophytic Macaranga winkleri pollinated by the thrips Dolichothrips fialae. Behavioural responses of ant guards to pollinator thrips and their chemicals, and related chemical analyses, provide evidence that thrips deter ant-guards by secreting droplets containing ant-repelling n-decanoic acid from their anuses. This is the first report of insect pollinators repelling their host's symbiotic guard ants to perform pollination. This is a novel strategy by which a plant host avoids interference with pollination by ant-guards in an ant-plant mutualism. The acquisition of a pollination system that is resistant to ant attacks may have facilitated the evolution of myrmecophytes in the genus Macaranga.

MISC

 13
  • 大谷郁生, 上田昇平, 乾陽子, 森地重博, 平井規央
    日本応用動物昆虫学会大会講演要旨 65th 2021年  
  • 中井貴生, 乾陽子, 時田恵一郎
    日本生態学会大会講演要旨(Web) 67th 2020年  
  • 乾 陽子, 上田 昇平
    環境技術 46(9) 484-487 2017年9月  招待有り
  • Shimizu-kaya Usun, Inui Yoko, Ueda Shouhei, Itino Takao, Itioka Takao
    Proceedings of the symposium "Frontier in tropical forest research: progress in joint projects between the Forest Department Sarawak and the Japan Research Consortium for Tropical Forests in Sarawak" 2016 146-153 2016年6月  
    This proceeding is a compilation of findings and progress activities of research collaboration between the Forest Department Sarawak (FDS) and the Japan Research Consortium for Tropical Forests in Sarawak (JRCTS). To highlight the research findings, An International Symposium entitled "Frontier in Tropical Forest Research: Progress in Joint Projects between the Forest Department Sarawak and the Japan Research Consortium for Tropical Forests in Sarawak" was ii held in Kuching, Sarawak on 21-22 September 2015.Myrmecophytes have mutualistic associations with plant-inhabiting ants (so-called plant-ants). They provide plant-ants with nest space and sometimes foods, and in return, the plant-ants protect their host-plants against herbivores, pathogens and climbing plants. In the tree genus Macaranga (Euphorbiaceae), 26 species are myrmecophytic, among which 18 species are distributed in Sarawak. The relationships between Macaranga myrmecophytes and plant-ants are remarkable for their high species-specificity and strong interdependency. For 20 years, we have studied the myrmecophyte-plant-ant relationships and their effects on the herbivorous insect assemblage associated with Macaranga plants at Lambir Hills National Park (LHNP), where 17 Macaranga species, including 12 myrmecophytic species, are distributed. Here, we describe 1) some ecological characteristics of Macaranga myrmecophytes, 2) the main results of our studies on the character of the mutualisms and their ecological consequences, and 3) our new research plans in Sarawak to investigate the geographical variations in the mutualisms. In our future research, we will enhance collaboration with Sarawakian researchers.
  • Inui Yoko, Shimizu-Kaya Usun, Yamasaki Eri, Maruyama Munetoshi, Itioka Takao
    Proceedings of the Symposium "Frontier in Tropical Forest Research: Progress in Joint Projects between the FDS and JRCTS" 2016 154-159 2016年  査読有り
    This proceeding is a compilation of findings and progress activities of research collaboration between the Forest Department Sarawak (FDS) and the Japan Research Consortium for Tropical Forests in Sarawak (JRCTS). To highlight the research findings, An International Symposium entitled "Frontier in Tropical Forest Research: Progress in Joint Projects between the Forest Department Sarawak and the Japan Research Consortium for Tropical Forests in Sarawak" was ii held in Kuching, Sarawak on 21-22 September 2015.Two myrmecophilous insect taxa on myrmecophytes (ant-plants) were studied, Arhopala (Lycaenidae) butterfly larvae feeding on Macaranga ant-plants and a monotypic cockroach genus inhabiting epiphytic ant-ferns. The chemical profiles of cuticular hydrocarbons did not always match between these myrmecophilous insects and the associated ants on the ant-plants. Chemically, Arhopala dajagaka showed good mimicry of the host ant species, A. amphimuta does not mimic, and A. zylda lacked hydrocarbons and thus appeared to be chemically insignificant. The cuticular hydrocarbons of Pseudoanaplectinia yumotoi cockroach were propagated among the host ant colonies. It is suggested that considerable variations exist in the chemical strategies that the myrmecophilous insects on ant-plants use in order to avoid ant attack and profit from the ant-plant associations.

共同研究・競争的資金等の研究課題

 11