Graduate School Human and Environmental Studies/Earth, Life and Environment
Undergraduate School Earth, Life and Environment (Division of Natural Sciences)
Other Affiliation Graduate School of Global Environmental Studies
Email ichioka.takao.5m(at mark), itiokatakao(at mark)
Personal Page Additional Information
Until 2023, the undergraduate school had five divisions. 'Division' provided above refers to the faculty member's former affiliation.
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Research areas Community Ecology, Population Ecology, Entomology, Evolutionary biology
Keywords Animal-plant interactions, Tropical rain forests, Biodiversity, Interspecific interactions, Longterm population dynamics
Themes The main purposes of my study are to clarify the features, dynamics and functions of the web of various interspecific interactions in biological communities in the wild for better understanding of how the web has influenced on the evolutionary processss of the organism traits, how it contributes to the maintenance of the biodiversity, and how it functions in the ecosystem. Recently, in Bornean tropical rain forests, I concentrate my research efforts on insect-plant interactions, effects of predation on behaviors, life histories and population traits of preys, effects of the supra-annual climatic change on the temporal trends in insect community, and human impacts on the biodiversity loss.
Major publications Itioka, T. & Inoue, T. 1996. Density-dependent ant attendance and its effects on the parasitism of a honeydew-producing scale insect, Ceroplastes rubens. Oecologia 106: 448-454.
Itioka, T. & Inoue, T. 1996. The consequences of ant-attendance to the biological control of the red wax scale insect Ceroplastes rubens by Anicetus beneficus. Journal of Applied Ecology 33: 609-618.
Itioka, T. & Inoue, T. 1999. The alternation of mutualistic ant species affects the population growth of their trophobiont meallybug. Ecography 22: 169-177.
Itioka, T., Nomura, M., Inui, Y., Itino, T. & Inoue, T. 2000. Difference in intensity of ant defense among three species of Macaranga myrmecophyte in a Southeast Asian dipterocarp forest. Biotropica 32: 318-326.
Itioka, T. and Yamauti, M. 2004. Severe drought, leafing phenology, leaf damage and lepidopteran abundance in the canopy of a Bornean aseasonal tropical rain forest. Journal of Tropical Ecology 20: 479-482
Professional societies/Research and synergic activities The Ecological Society of Japan, The Society of Population Ecology, The Entomological Society of Japan, The Ecological Society of America, The Japan Ethological Society
Teaching Areas
  • Undergraduate courses
  • Graduate courses (Master's program)
  • Graduate courses (Doctor's program)
  • Undergraduate courses open to all departments
Background Bachelor of Agriculture from Faculty of Agriculture, Kyoto University, Mar 1987
Master of Agriculture from Graduate School of Agriculture, Kyoto University, Mar 1989
Doctor of Agricultural Sciences, Kyoto University, May 1993

Fellow of the Japan Society for the Promotion of Science for Japanese Junior Scientists, Apr-Aug 1993
Research Associate, School of Agriculture, Nagoya University, Sep 1993 - Mar 1999
Research Associate, Graduate School of Bioagricultural Sciences, Nagoya University, Apr 1999
Assistant Professor of Graduate School of Human and Environmental Studies, Kyoto University, Apr 2004
Associate Professor of Graduate School of Human and Environmental Studies, Kyoto University, Apr 2007
Associate Professor of Graduate School of Global Environmental Studies, Kyoto University, Apr 2008
Professor of Graduate School of Human and Environmental Studies, Kyoto University, Apr 2013

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