Researcher Database

Tohru Ikeda
Graduate School of Humanities and Human Sciences Division of Human Sciences Department of Regional Science
Professor

Researcher Profile and Settings

Affiliation

  • Graduate School of Humanities and Human Sciences Division of Human Sciences Department of Regional Science

Job Title

  • Professor

Degree

  • M.A.(Hokkaido University,1983)(Hokkaido University)

J-Global ID

Research Interests

  • New Zealand   Invasion Ecology   有害獣   伝統文化   博物館資料   Huntng   Pest Control   Furbearer Hunting   Invasive Alien Mammal   合意形成   生態系保全   アライグマ   キタキツネ   Invesive Alien Species   外来種   少数民族   環境問題   アーバン・ワイルドライフ   Invasive Alien Species control   Wildlife management   Regional Science   Animal Ecology   Conservation Ecology   

Research Areas

  • Life sciences / Ecology and environmental science / Invasion Ecology
  • Environmental science/Agricultural science / Environmental policy and society / IAS Management
  • Environmental science/Agricultural science / Biological resource conservation / Invasive Alien Species Control
  • Environmental science/Agricultural science / Biological resource conservation / Conservation Ecology
  • Environmental science/Agricultural science / Biological resource conservation / Wildlife Management
  • Humanities & social sciences / Experimental psychology / Animal Psychology
  • Environmental science/Agricultural science / Environmental impact assessment / Environmental Impact Assessment
  • Humanities & social sciences / Local studies / New Zealand
  • Life sciences / Ecology and environmental science / Animal ecology

Academic & Professional Experience

  • 2019/04 - Today Faculty of Humanities and Human Sciences, Hokkaido University Division of Human Sciences, Department of Regional Science Professor
  • 2007/04 - 2019/03 - 北海道大学大学院教授(文学研究科人間システム科学専攻地域システム科学講座) 教授
  • 2001/04 - 2007/03 北海道大学大学院助教授(文学研究科人間システム科学専攻地域システム科学講座) 助教授
  • 2000/04 - 2001/03 北海道大学大学院助手(文学研究科人間システム科学専攻地域システム科学講座) 助手
  • 1995/04 - 2000/03 北海道大学助手(文学部人文科学科地域システム科学講座) 助手
  • 1988/04 - 1995/03 北海道大学助手(文学部行動科学科社会生態学講座) 助手

Education

  • 1983/04 - 1988/03  Hokkaido University
  •        - 1988  Hokkaido University  Graduate School, Division of Letters  Psychology
  • 1981/04 - 1983/03  Hokkaido University
  •        - 1983  Hokkaido University  Graduate School, Division of Letters  Psychology
  • 1977/04 - 1981/03  Hokkaido University  Faculty of Letters
  •        - 1981  Hokkaido University  Faculty of Literature
  • 1974/03 - 1977/03  北海道札幌南高等学校

Association Memberships

  • IUCN   北海道自然保護協会   Society for Conservation Biology   The Wildlife Society   日本動物行動学会   動物の行動と管理学会   ASSOCIATION OF WILDLIFE AND HUMAN SOCIETY   .日本生態学会   The Mammalogical Society of Japan   The Mammal Society   日本シベリア学会   北海道民族学会   

Research Activities

Published Papers

  • Takaaki Suzuki, Tohru Ikeda
    BMC ECOLOGY 20 (1) 2020/12 
    Background The raccoon (Procyon lotor) is an invasive, non-native species in Japan. Throughout the country, it causes significant agricultural damage and negatively affects native biodiversity. Most of the responsibility for raccoon management lies with local government, and there are still many challenges to be overcome. Although raccoon populations have not been eradicated, intensive control campaigns such as focus on the early stages of invasion have controlled raccoons in some regions. To improve the national management of raccoons, we conducted a survey on raccoon management systems in local government departments considered to solve the challenges recognized in many areas. During 2014 and 2015, we surveyed three different municipal departments about raccoon management measures. The semi-structured interview survey covered two topics: (1) the situation leading up to the current management system; (2) the current management system. Results Our results describe the scope and methods used in raccoon management. The government staff managed raccoons using monitoring, employing a variety of methods, a range of budgets, and various role divisions. The management practices are similar in that they share a sense of taking precautions, collaborating with stakeholders, understanding that adequate methods must be used, and obtaining support from experts. Conclusions Our case studies reveal the challenges in raccoon management faced by local government officers in regions with active control. The management systems and methods that we surveyed seemed to be effective in solving problems in both developed and undeveloped areas.
  • Minami W. Okuyama, Michito Shimozuru, Mariko Nakai, Emi Yamaguchi, Kei Fujii, Ken-ichiro Shimada, Tohru Ikeda, Toshio Tsubota
    SCIENTIFIC REPORTS 10 (1) 2045-2322 2020/05 [Refereed][Not invited]
     
    Phylogeographic studies can resolve relationships between genetic population structure of organisms and geographical distributions. Raccoons have become feral in Japan, and in Hokkaido island, they have been rapidly increasing in number and spreading since the 1970s. We analyzed mitochondrial (mtDNA) and microsatellite DNA to understand the current phylogenetic distribution and invasive founder events. Overall, Hokkaido raccoons maintained high genetic diversity (i.e., the level of heterozygosity was comparable to the original habitat, North America). Based on mtDNA distribution and microsatellite diversity, Hokkaido raccoons were divided into six management units. However, mtDNA haplotype distributions and genetic structures based on microsatellites did not always correspond to each other (e.g., two geographically and genetically separated populations showed similar mtDNA distributions). In addition, a high degree of genetic admixture was observed in every unit, and the degree of genetic differentiation was low even between regions separated by long distances. Compared with other countries in Europe where genetic distribution of introduced raccoons is more clearly structured, the current results represent a unique and complex phenomenon of pet escape/abandonment in Hokkaido: i.e., genetically related colonies were introduced into multiple regions as founder events, resulting in the current state in which raccoons are not clearly genetically differentiated even 40 years after introduction.
  • Takaaki Suzuki, Tohru Ikeda
    WILDLIFE RESEARCH 46 (6) 476 - 483 1035-3712 2019/09 [Refereed][Not invited]
     
    Context In Japan, the raccoon is an invasive, non-native mammal that causes significant agricultural damage and impacts on native biodiversity throughout the country. Local governments are mainly responsible for raccoon management. Intensive control campaigns focused on the early invasion stage have controlled raccoons in some regions but, generally, there are very few regions where raccoon numbers have been reduced sustainably, and no raccoon populations have been eradicated.Aims To improve national management of raccoons and canvass the opinions and perceptions of local government officers involved in raccoon control, and to review the efficiency and effectiveness of raccoon management strategies.Methods A questionnaire survey of 47 prefectural and 366 municipal governments was conducted, regarding raccoon management measures, during 2012 and 2013. The survey covered two topics: (1) management difficulties experienced by officers; and (2) details of the current raccoon management regime.Key results Efforts to manage raccoon populations have encountered some difficulties, including shortages of raccoon control officers, funding, expertise in raccoon biology and management, and lack of information about the invasion status of local raccoon populations and ecological traits of raccoons. Prefectures not currently managing raccoons indicated that they suffered from a lack of appropriate management procedures. However, current management programs were not generally functioning efficiently or effectively because many local governments did not implement appropriate monitoring. About 70% of local governments did not set control target indices, and there were very few quantitative datasets that could be used to measure the effectiveness of control in reducing raccoon impacts.Conclusions Best practice management programs have been being implemented in very few government areas, with institutional characteristics and difficulties in obtaining relevant information causing major problems.Implications Collecting and sharing information about effective raccoon management methods and case study examples from successful regions would enable other local administrations to select and implement the most effective and efficient control strategy, methods and monitoring program for their region.
  • Why Alien Species are a Problem : From the Viewpoint of the Relationship between Human and Animals
    IKEDA Tohru
    Japanese Journal of Science Communication 23 41 - 50 2018/07 [Not refereed][Invited]
  • Raccoon: adaptive bandit
    IKEDA Tohru
    Northern forestry, Japan 68 (3) 35  2017 [Not refereed][Invited]
  • YAMAD Fumio, IKEDA Tohru, TODA Mitsuhiko, HASHIMOTO Takuma, GOKA Koichi, SOMIYA Kazuo
    Mammalian Science 56 (2) 251 - 257 2016 [Refereed][Not invited]
  • 立澤史郎, 吉田 睦, 中田 篤, 池田 透
    シベリア 温暖化する極北の水環境と社会 385 - 420 2015/03 [Not refereed][Not invited]
     
    檜山哲哉・藤原潤子 編著
  • 外来種問題の所在と対策課題
    池田 透
    北海道芝草研究会報 (38) 3 - 8 2014/08 [Not refereed][Invited]
  • アライグマ問題にみる外来種対策の社会・政策的課題
    池田 透
    Seeder = シーダー : 種まく人 : 地域環境情報から考える地球の未来 10 76 - 80 2014 [Not refereed][Invited]
  • YAMADA Fumio, ISHII Nobuo, IKEDA Tohru, TOKIDA Kunihiko, FUKASAWA Keita, HASHIMOTO Takuma, MOROSAWA Takahiro, ABE Shintaro, ISHIKAWA Takuya, ABE Go, MURAKAMI Okimasa
    哺乳類科学 52 (2) 265 - 287 0385-437X 2012/12/30 [Not refereed][Not invited]
  • Furbearer Hunting and invasive alienspecies issues in Yakutia.
    Tohru Ikeda
    Global Warming and the Human-nature Dimension in Siberisa 100 - 102 2012 [Not refereed][Not invited]
  • MURAKAMI TAKAHIRO, IKEDA TOHRU, SHIMADA KEN'ICHIRO
    知床博物館研究報告 33 (33) 61 - 67 0387-8716 2011/12/30 [Not refereed][Not invited]
  • ABE Go, MIYOSHI Hidekatsu, SASHIKA Mariko, NAKAI Mariko, SHIMADA Kenichirou, UEDA Kazunori, TOGASHI Takashi, IKEDA Tohru, TATSUZAWA Shirow, MUROYAMA Yasuyuki
    ほ乳類科学 日本哺乳類学会 51 (2) 257 - 263 0385-437X 2011/12/30 [Not refereed][Not invited]
  • Establishing the raccoon control system and the issues in Hokkaido.
    Tohru IEDA
    Island Invasives: Eradication and Management 526 - 526 2011 [Not refereed][Not invited]
  • Shimatani Y, Takeshita T, Tatsuzawa S, Ikeda T, Masuda R
    Zoological science 27 (3) 243 - 247 0289-0003 2010/03 [Refereed][Not invited]
  • Koji Kotani, Hiromasa Ishii, Hiroyuki Matsuda, Tohru Ikeda
    POPULATION ECOLOGY 51 (4) 493 - 504 1438-3896 2009/10 
    We develop discrete-time models for analyzing the long-run equilibrium outcomes on invasive species management in two-patch environments with migration. In particular, the focus is on a situation where removal operations for invasive species are implemented only in one patch (controlled patch). The new features of the model are that (1) asymmetry in density-dependent migration is considered, which may originate from impact of harvesting as well as heterogeneous habitat conditions, and (2) the effect of density-dependent catchability accounts for the fact that the required effort level to remove one individual may rise as the existing population decreases. The model is applied to agricultural damage control in the raccoon (Procyon lotor) problem that has occurred in Hokkaido, Japan. Numerical illustrations demonstrate that the long-run equilibrium outcomes largely depend on the degree of asymmetry in migration as well as the sensitivity of catchability in response to a change in the population size of the invasive species. Furthermore, we characterize the conditions under which the economically optimal effort levels are qualitatively affected by the above two factors, and conclude that aiming at local extermination of invasive species in the controlled patch is justified.
  • YAMADA Fumio, IKEDA Tohru, OGURA Go, TOKIDA Kunihiko, ISHII Nobuo, MURAKAMI Okimasa
    Honyurui Kagaku (Mammalian Science) 日本哺乳類学会 49 (1) 177 - 183 0385-437X 2009/06/30 [Not refereed][Not invited]
  • 池田 透
    地理 古今書院 54 (3) 32 - 35,4 0577-9308 2009/03 [Not refereed][Invited]
  • Kotani Koji, Ishii Hiromasa, Matsuda Hiroyuki, Ikeda Tohru
    Economic analysis & policy series 国際大学 9 1 - 28 2009/01 [Not refereed][Not invited]
     
    We develop discrete-time models for analyzing the long run equilibrium outcomes on invasive species management in two-patch environments with migration. In particular, the focus is upon a situation where removal operations for invasive species are implemented only in one patch (controlled patch). The new features of the model are that (i) asymmetry in density dependent migration is considered, which may originate from impact of harvesting aswell as heterogeneous habitat conditions, and (ii) the effect of density-dependent catchability is well-taken to account for the nature that the required effort level to remove one individual may rise as the existing population decreases. The model is applied for agricultural damage control in the raccoon problem that has occurred in Hokkaido, Japan. Numerical illustrationsdemonstrate that the long run equilibrium outcomes highly depend on the degree ofasymmetry in migration as well as the sensitivity of catchability in response to a change in the population size of invasive species. Furthermore, we characterize the conditions under which the economically optimal effort levels are qualitatively affected by the above two factors and aiming at local extermination of invasive species in the controlled patch is justified.
  • Yukari Shimatani, Tsuyoshi Takeshita, Shirow Tatsuzawa, Tohru Ikeda, Ryuichi Masuda
    ZOOLOGICAL SCIENCE 25 (7) 714 - 720 0289-0003 2008/07 [Refereed][Not invited]
     
    To identify mammalian carnivore species distributed in the Kushiro Wetland, eastern Hokkaido, Japan, we developed molecular-genetic methods for identification of the species from fecal samples collected from the field. Species-specific primers and PCR programs were established for five native and six alien species of carnivores: Martes zibellina, Mustela nivalis, Mustela erminea, Vulpes vulpes, and Nyctereutes procyonoides as native species, and Neovison vison, Martes melampus, Mustela itatsi, Canis familiaris, Felis catus, and Procyon lotor as alien species in Hokkaido. Touch-down PCR, in which the annealing temperature is decreased 1 degrees C every cycle, was more effective for some species from which fecal DNA was not amplified species-specifically with standard PCR programs. Of 405 fecal samples collected from the Kushiro Wetland, the species of origin of 246 samples were successfully identified: 88 samples for N. vison, 140 for M. zibellina, 13 for V vulpes, four for C. familiaris and one for E catus. The results show the particular applicability of this method to monitoring M. zibellina and N. vison. In addition, methods to PCR-amplify DNA from two crayfish species (Pacifastacus leniusculus and Cambaroides japonicus) were developed to determine whether the carnivore fecal samples contained detectable DNA from the prey crayfishes. DNA from P leniusculus was amplified from feces of N. vison identified in the present study, but no DNA from C. japonicus was detected. This indicates that N. vison preys on the alien species P leniusculus.
  • 浅川 満彦, 池田 透
    ワイルドライフ・フォーラム 「野生生物と社会」学会 12 (2) 25 - 29 1341-8785 2007/08/25 [Not refereed][Not invited]
  • 池田 透
    緑の読本 環境コミュニケーションズ (78) 30 - 35 2007/08 [Not refereed][Invited]
  • 池田透
    月刊資源環境対策 43 (10) 30 - 35 0916-9172 2007/08 [Not refereed][Invited]
  • 北海道アライグマ感染症概説
    Wildlife Forum 12 (2) 25 - 31 2007 [Not refereed][Not invited]
  • ABE Go, AOYAGI Masahide, MATOBA Yohei, SASHIKA Mariko, KURUMADA Toshio, TAKANO Yasuko, IKEDA Tohru, TATSUZAWA Shirow
    Honyurui Kagaku (Mammalian Science) 日本哺乳類学会 46 (2) 169 - 175 0385-437X 2006/12/30 [Not refereed][Not invited]
     
    The wire cage trap, which is the most popular restraining measure for capturing feral raccoons (Procyon lotor) in Japan, has some problems, including 1) capturing untargeted animals, 2) bait stealing by small animals and mechanical failure, 3) trap-shyness, 4) tendency to break due to the activities of captured animals, and 5) high cost of purchasing, transportation and maintenance. Seven EggTM traps were employed to examine their efficacy in preventing these problems. In this study, 2 feral raccoons (a 5-year-old male and a 6-year-old female) were captured without injury over 200 trap nights. No untargeted animals were captured and only one trap failed due to a crack in inner parts. There was also no bait loss recorded with the bait-setup that involved a trap hanging from an iron pole. The results showed that the EggTM traps, which are cheaper, smaller, lighter, and easier to maintain than live cage traps, could help resolve or reduce some problems of live cage traps in capturing feral raccoons.
  • IKEDA Tohru
    Honyurui Kagaku (Mammalian Science) 日本哺乳類学会 46 (1) 95 - 97 0385-437X 2006/06/30 [Not refereed][Not invited]
  • MURAKAMI Okimasa, ISHII Nobuo, IKEDA Tohru, TOKIDA Kunihiko, YAMADA Fumio
    Honyurui Kagaku (Mammalian Science) 日本哺乳類学会 46 (1) 69 - 74 0385-437X 2006/06/30 [Not refereed][Not invited]
  • Differences in habitat use of the native raccoon dog (Nyctereutes procyonoides albus ) and the invasive alien raccoon (Procyon lotor ) in the Nopporo Natural Forest Park, Hokkaido, Japan
    Assessment and Control of Biological Invasion Risks 116 - 121 2006 [Not refereed][Not invited]
  • Present Status of Invasive Alien Raccoon and its Impact in Japan.
    Tohru KEDA, Makoto ASANO, Yohei MATOBA, Go ABE
    Global Environment Research 8 (2) 125 - 131 2004 [Refereed][Not invited]
  • M Asano, Y Matoba, T Ikeda, M Suzuki, M Asakawa, N Ohtaishi
    JOURNAL OF VETERINARY MEDICAL SCIENCE 65 (3) 369 - 373 0916-7250 2003/03 [Refereed][Not invited]
     
    Reproduction of feral raccoons (Procyon lotor) in Hokkaido, Japan, was examined during a 2-year period by analysis of placental scars or fetuses in the uterus. Of 242 collected females, 69 (29%) were juveniles, 71 (29%) yearlings, and 102 (42%) adults. The pregnancy rate averaged 66% in yearlings and was significantly lower than the 96% average observed in adults (p<0.01). Litter size ranged from I to 7 offspring per female, and averaged 3.6 in yearlings and 3.9 in adults. There was no significant difference in mean litter size between yearlings and adults. In Hokkaido, the raccoon mating season peaked in February and the majority of litters were born between March and May, similar to patterns described in North America, but some females mated in summer. The reproductive potential of feral raccoons in Hokkaido was similar to that reported in North America. The recent increase in raccoon numbers can be explained by their high productivity. Harvest data suggest that hunting pressure on juveniles is lower than that for older age classes when using box traps in summer. In order to reduce the feral raccoon population, alternative hunting methods that increase juvenile mortality rates are needed.
  • M Asano, Y Matoba, T Ikeda, M Suzuki, M Asakawa, N Ohtaishi
    JAPANESE JOURNAL OF VETERINARY RESEARCH 50 (4) 165 - 173 0047-1917 2003/02 [Refereed][Not invited]
     
    The growth pattern and seasonal weight fluctuations of feral raccoons in Hokkaido were evaluated between 1999 and 2001. The growth rates in body length and body weight were described for juveniles (young of the year) and yearlings (animals born in the previous season) using the Gompertz growth model. The asymptotic body sizes for males were greater than those for females. Young raccoons born during spring in the study area could potentially grow up to their asymptotic size at the beginning of their first winter, but they would not reach their full adult sizes until at least their second fall. Adult raccoons (animals greater than or equal to 2 -year-old) had seasonal weight fluctuations with annual weight loss of 25% to 28% of mean maximum weights in west-central Hokkaido, but these result would be an underestimate of the degree of annual weight fluctuations. Juvenile raccoons can be distinguished from the older animals by measuring body length or body weight during fall in Hokkaido.
  • Present Situation of Furbearer Hunting in Northern Yakutia : Turning Point of Traditional Hunting Activities
    Tohru IKEDA
    Northern Asian Studies 6 77 - 88 2003 [Not refereed][Invited]
  • 池田透
    日本野生動物医学会誌 7 (1) 13 - 16 1342-6133 2002/03 [Not refereed][Invited]
  • IKEDA TOHRU, ENDO MASAFUMI, MURANO NORIO
    酪農学園大学紀要 自然科学編 25 (2) 311 - 319 0388-001X 2001/02/20 [Not refereed][Not invited]
  • Ikeda Tohru
    Japanese journal of conservation ecology 日本生態学会 5 (2) 159 - 170 1342-4327 2001/01 [Not refereed][Invited]
     
    日本各地で野生化しているアライグマの現状とその管理課題について考察を試みた.アライグマは雑食性で多様な環境で生息可能であり,逃亡・遺棄によって野生化が生じると,人間を怖れないために人間の生活圏内でも条件にさえ恵まれれば急激に増加する可能性を持っている.また,日本には天敵も存在しないためにアライグマが野山に拡散するに連れて在来の生物へも影響が及び,生態系の撹乱が危惧される.生物多様性条約への批准を機に日本でもようやく移入種問題が取り上げられるようになったが動きは遅く,現在のアライグマ対策は地方自治体が主体となって展開している.農業被害に端を発した北海道の対策は,生態系の保全を念頭においた科学的対策構築へと展開してきたが,法的規制に関連する予防措置や対策継続のための長期的予算確保など問題も多く残されている.今後は移入種問題を危機管理の問題としてとらえ,移入種に対する管理指針の確立とガイドラインの制定とを含めて国家的対策としての体制を整え,自治体との連携作業で事態に対処することが望まれる.
  • 池田透
    生物の科学 遺伝 裳華房 54 (3) 59 - 63 0387-0022 2000/03 [Not refereed][Invited]
  • 池田 透
    The Annual report on cultural science 北海道大學文學部 = The Faculty of Letters, Hokkaido University 47 (4) 149 - 175 0437-6668 1999/03 [Not refereed][Not invited]
  • 池田 透
    The Annual report on cultural science 北海道大學文學部 = The Faculty of Letters, Hokkaido University 47 (3) 179 - 209 0437-6668 1998/12 [Not refereed][Not invited]
  • 池田 透
    遺伝 裳華房 52 (5) 37 - 41 0387-0022 1998/05 [Not refereed][Invited]
  • IKEDA TOHRU
    生物の科学 遺伝 52 (5) 37 - 41 0387-0022 1998/05 [Not refereed][Invited]
  • 池田 透
    The Annual report on cultural science 北海道大學文學部 = The Faculty of Letters, Hokkaido University 46 (1) 195 - 215 0437-6668 1997/09 [Not refereed][Not invited]
  • 池田 透
    遺伝 裳華房 38 (7) 94 - 98 0387-0022 1984/07 [Not refereed][Invited]
  • 鈴木 延夫, 池田 透, 岡野 美佐夫
    哺乳類科学 The Mammal Society of Japan 23 (2) 1 - 12 0385-437X 1983 [Refereed][Not invited]
  • 鈴木 延夫, 池田 透
    哺乳類科学 The Mammal Society of Japan 21 (1) 1 - 9 0385-437X 1981 [Refereed][Not invited]

Books etc

  • The Regional Assessment Report on Biodiversity and Ecosystem Services for Asia and the Pacific
    Lilibeth A. Acosta, Amjad Virk, Ritesh Kumar, Shyam Sharma, Tohru Ikeda, Ganesh Raj Joshi, Md Saiful Karim, Koichi Kuriyama, Mitsutaku Makino, Kimiko Okabe, Nicolas Pascal, Zara Phang, Noraini Mohd Tamin, Yasuo Takahashi (Joint workChapter 6. Options for Governance and Decision-Making across Scales and Sectors)
    The Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) 2018/06
  • Satoshi OHDACHI, Ysuyuki ISHIBASHI, Masahiro IWASA, Dai Fukui, TAkashi SAITOH (Contributorraccoon, invasive alien mammals)
    SHOUKADOH Book Sellers, The Mammalogical Society of Japan 2015/07
  • 檜山 哲哉, 藤原 潤子 (Contributor第11章11-2節)
    京都大学学術出版会 2015/04 (ISBN: 4876983151) 511
  • 池田 透 (Editorchapter 9)
    北海道大学出版会 2013/03 (ISBN: 4832933841) 316
  • 高倉 浩樹, 佐々木 史郎, 中田 篤, 藤原 潤子, 吉田 睦, 檜山 哲哉, 池田 透, 奥村 誠, 永山 ゆかり, 山田 仁史 
    新泉社 2012 (ISBN: 9784787711120)
  • 山田文雄, 池田透, 小倉剛, 山田 文雄, 小倉 剛, 池田 透 (Editor第1章・第3章)
    東京大学出版会 2011/12 (ISBN: 4130602217) 439
  • Invasive Alien Mammals in Japan
    University of Tokyo Press 2011
  • 北村清彦, 池田 透, 加藤博文, 佐藤知己, 津曲敏郎, 宮武公夫, 望月恒子, 谷古宇尚, 吉開将人, 北村清彦 編 (Contributor)
    北海道大学出版会 2010/04 (ISBN: 4832933744) 282
  • The Wild Mammals of Japan
    S.OHDACHI, Y.ISHIBASHI, M.Iwasa, T.SAITOH (Contributorraccoon, invasive alien mammals)
    SHOUKADOH Book Sellers 2009/07 (ISBN: 4879746266) 544
  • 日本の哺乳類学 2 中大型哺乳類・霊長類
    東京大学出版会 2008
  • Mammalogy in Japan
    University of Tokyo Press 2008
  • 池田 透 (Supervisor)
    青春出版社 2007/02 (ISBN: 4413041666) 205
  • アラスカ遠征のパイオニア
    北方文化振興協会 2007
  • 日本生態学会 (Joint editor哺乳類)
    地人書館 2002/09 (ISBN: 9784805207062)
  • レッドデータ 日本の哺乳類
    日本哺乳類学会 (Contributor食肉目)
    文一総合出版 1997/09
  • 子別れの心理学 新しい親子関係像の提唱
    根ケ山光一, 鈴木晶夫 (Contributor)
    福村出版 1995/04
  • 生態学からみた北海道
    東正剛, 阿部永, 辻井達一 (Contributor)
    北海道大学図書刊行会 1993/06

Conference Activities & Talks

  • Distribution change of sables in Nopporo Forest Park, Hokkaido, Japan  [Not invited]
    Feiyan LU, Tohru IKEDA
    第68回日本生態学会大会  2021/03
  • 池田 透, 鈴木 嵩彬, 淺野 玄, 國永 尚稔, 小林 あかり
    第67回日本生態学会大会  2020/03
  • 野生動物管理策の前提として不可欠な「実現可能性分析」 ~外来生物対策における先行事例を踏まえて~  [Invited]
    池田透
    令和元年度日本獣医師会獣医学術学会年次大会 公益社団法人日本獣医師会-シンポジウム 「CSF(豚コレラ)対策として求められる野生イノシシの生態学的・行動学的知見と防疫対応の考え方」  2020/02
  • 効果的・効率的アライグマ 防除対策を目指して ~外来種管理のキーポイント~  [Invited]
    池田透
    岐阜大学2019年度連続講座「野生動物を知る」  2019/12
  • アライグマ地域的根絶に関するフィージビリティスタディ  [Not invited]
    池田透, 小林あかり, 鈴木嵩彬, 淺野玄, 國永尚稔
    日本哺乳類学会2019年度大会  2019/09
  • Study of requirements for feasible control strategies against invasive raccoons  [Not invited]
    IKEDA Tohru
    第65回日本生態学会大会  2019/03
  • 効果的・効率的アライグマ対策に向けた意思決定支援システム(DSS)導入の検討  [Not invited]
    池田透, 小林あかり
    日本哺乳類学会2018年度大会  2018/09
  • 日本のアライグマ対策における実現可能性研究の導入の検討  [Not invited]
    小林あかり, 池田透
    日本哺乳類学会2018年度大会  2018/09
  • 樹洞営巣性を利用したアライグマ巣箱型ワナの低密度生息状況における効果と効率  [Not invited]
    池田透, 島田健一郎, 田中一典, 鈴木高彬, 小林あかり, 槻田和史, 須田孝徳, 根本英希
    日本哺乳類学会2017年度大会  2017/09
  • アライグマの樹洞営倉性を利用した巣箱型捕獲ワナの開発と有効性の検証  [Not invited]
    池田透, 島田健一郎, 鈴木嵩彬, 田中一典
    第64回日本生態学会大会  2017/03
  • 対策コスト削減を目的としたアライグマ捕獲ワナの開発  [Not invited]
    池田透, 島田健一郎
    野生生物と社会学会  2016/11
  • 天売島のノラネコ問題と対策に関する住民意識調査  [Not invited]
    池田透, 竹中康進, 山田太志, 鈴木嵩彬, 豆野皓太, 小林あかり, 石田祥紀, 大坂義臣
    日本哺乳類学会  2016/09
  • アライグマ管理(防除対策)のパターンと生じる課題  [Not invited]
    鈴木嵩彬, 池田透
    日本哺乳類学会  2016/09
  • 北海道におけるアライグマの遺伝子型の地理的分布に関する研究  [Not invited]
    奥山みなみ, 下鶴倫人, 中井真理子, 藤井啓, 山口英美, 島田健一郎, 池田透, 坪田敏男
    日本獣医学会  2016/08
  • 外来種アライグマ対策の現状と課題  [Not invited]
    池田 透, 鈴木嵩彬
    第63回日本生態学会  2016/03
  • 外来種から地域の生物多様性を守るために(仮題)  [Invited]
    池田 透
    外来種リスクから生物多様性を考えるシンポジウム  2015/10
  • Towards Solving a Problem in Invasive Alien Raccoon Control Focusing on Information Sharing in Japan  [Not invited]
    Takaaki Suzuki, Tohru Ikeda
    5th International Wildlife Management Congress  2015/07
  • Struggles for Effenctive and Sustained Control of Invasive Alien Species; Toward improved control and radication in the Future  [Not invited]
    Tohru Ikeda
    5th International Wildlife Management Congress  2015/07
  • Current Status, Challenges and Future Perspective on Controlling Invasive Alien Raccoons in Japan.  [Not invited]
    Tohru Ikeda, K.Shimada, T.Suzuki
    5th International Wildlife Management Congress  2015/07
  • 哺乳類の現状と課題 (フォーラム 愛知目標達成のための侵略的外来種リスト(仮称)の現状と課題)  [Not invited]
    池田 透
    第62回日本生態学会  2015/03
  • 生物多様性と特定外来生物アライグマ  [Invited]
    池田 透
    旭川市生物多様性セミナー  2015/02
  • 大分市一木地区における官・民・学連携によるアライグマ防除  [Not invited]
    池田透, 島田健一郎, 中井真理子, 鈴木嵩彬, 内田桂
    第20回野生生物と社会学会犬山大会  2014/11
  • アライグマ防除対策と外来種の捕獲技術研究について  [Invited]
    池田 透
    平成26年度環境省野生生物研修会  2014/09
  • アライグマ管理(防除対策)における成果や課題の収集と整理  [Not invited]
    鈴木嵩彬, 池田透
    日本哺乳類学会2014年度大会  2014/09
  • 生物多様性保全に基盤を置いた官・民・学協働アライグマ侵入初期防除の成果と課題  [Not invited]
    池田透, 島田健一郎, 中井真理子, 鈴木嵩彬, 内田桂
    日本哺乳類学会2014年度大会  2014/09
  • 外来アライグマ防除対策における情報共有ネットワーク構築  [Not invited]
    鈴木嵩彬, 池田透
    第61回日本生態学会  2014/03
  • アライグマの効果的・効率的防除戦略開発  [Not invited]
    池田透, 中井真理子, 島田健一郎, 鈴木嵩彬
    第61回日本生態学会  2014/03
  • 外来種防除対策の考え方とアライグマ防除対策  [Not invited]
    池田 透
    北海道外来種対策連絡会議  2014/02
  • アライグマ  [Invited]
    池田 透
    外来種問題を考える  2014/02
  • 外来種問題の所在と対策仮題  [Invited]
    池田 透
    北海道芝草研究会  2014/01
  • 外来アライグマ対策における情報共有ネットワークの構築に向けて  [Not invited]
    鈴木嵩彬, 池田透
    第19回野生生物と社会学会篠山大会  2013/11
  • Trial Run of Community-based Invasive Raccoon Control Campaign with the Objective of Conserving Local Ecosystem.  [Not invited]
    Tohru Ikeda, Kei Uchida, Miharu Kojo
    2nd International Congress on Biological Invasions  2013/10
  • アライグマ防除対策と外来種の捕獲技術研究  [Invited]
    池田 透
    平成25年度環境省野生生物研修会  2013/09
  • 効果的・効率的な外来アライグマ対策に向けた情報共有練ったワークの必要性と可能性  [Not invited]
    鈴木嵩彬, 池田透
    日本哺乳類学会2013年度大会  2013/09
  • アライグマ低密度生息下における新しい捕獲技術としての巣箱型ワナ開発  [Not invited]
    島田健一郎, 池田透
    日本哺乳類学会2013年度大会  2013/09
  • 知床半島におけるアライグマ防除の展望  [Not invited]
    池田透, 島田健一郎
    日本哺乳類学会2013年度大会  2013/09
  • アライグマ探索犬の訓練方法及び活用に関する研究 ~真冬の探索試験の結果および探索環境条件と臭気の流れに関する考察  [Not invited]
    中井真理子, 山下國廣, 福江佑子, 池田透
    日本哺乳類学会2013年度大会  2013/09
  • New initiative for invasive alien raccoon control in Jpan  [Not invited]
    Tohru Ikeda, M.Nakai, K.Shimada, T.Suzuki, J.Zhang
    26th International Congress for Conservation Biology  2013/07
  • 効果的・効率的外来哺乳類対策の構築に向けて  [Not invited]
    池田透, 石井信夫, 山田文雄
    日本哺乳類学会2012年度大会  2012/09
  • アライグマ捕獲のための巣箱型ワナの開発と試験設置  [Not invited]
    島田健一郎, 池田透
    日本哺乳類学会2012年度大会  2012/09
  • アライグマ探索犬の育成方法及び活用に関する研究 ~探索訓練の経過と発信器装着アライグマのレスティングサイト探索試験  [Not invited]
    中井真理子, 山下國廣, 福江佑子, 池田透
    日本哺乳類学会2012年度大会  2012/09
  • Struggle with raccoons for preventing ecological and agricultural impacts.  [Not invited]
    IKEDA Tohru
    Joint Meeting of the 59th Annual Meeting of ESJ & the 5th EAFES International Conference.  2012/03
  • 低密度状況下におけるアライグマの探索・捕獲技術開発  [Not invited]
    池田透, 中井真理子, 島田健一郎, 山下國廣, 福江佑子, 小谷栄二, 川崎綾子
    日本哺乳類学会2011年度大会  2011/09
  • 外来哺乳類対策の展開と地域協働 (企画集会 外来生物法の見直しと将来)  [Not invited]
    池田 透
    第58回日本生態学会  2011/03
  • development of efficient technolofies to detect and capture invasve alien raccoons at low population density in Japan.  [Not invited]
    Tohru Ikeda, M.Nakai, K.Shimada, K.Yamashita, E.Kotani, A.Kawasaki
    18th Annual Conference of the Wildlife Society  2011
  • Development of efficient technologies to capture invasive alien raccoons at low population density.  [Not invited]
    Tohru Ikeda, M.Nakai, K.Shimada, K.Yamashita, E.Kotani, A.Kawasaki
    25th Intenational Conference for Conservation Biology  2011
  • 外来哺乳類の防除戦略(シンポジウム 侵略的外来種の防除戦略)  [Not invited]
    池田透
    第57会日本生態学会  2010/03
  • 外来種(特定外来生物)アライグマ、野生化への対応  [Invited]
    池田透
    動物臨床医学会  2008/11  大阪
  • アライグマ防除の現状と課題  [Not invited]
    池田透
    日本生態学会  2007  松山市
  • 知床における外来哺乳類問題  [Not invited]
    池田透, 立澤史郎
    日本生態学会  2007  松山市
  • 外来生物からみた北海道  [Not invited]
    池田透
    日本哺乳類学会  2007  東京
  • Problems in countermeasures against invasive alien raccoons in Hokkaido, Japan.  [Not invited]
    Ikeda T, Abe G
    2nd Scientific Congress of East Asian Federation of Ecological Societies  2006  新潟市
  • 知床半島へのアライグマの侵入  [Not invited]
    立澤史郎, 池田透, 増田泰
    日本生態学会  2006  新潟市
  • 外来アライグマ対策における合意形成の進め方について  [Not invited]
    池田透
    日本生態学会  2006  新潟市
  • 外来アライグマ問題に対する地域住民意識と合意形成の進め方について  [Not invited]
    池田透, 立澤史郎, 阿部豪
    日本哺乳類学会  2006  京都
  • 北方地域における環境研究の課題 ―自然資源保全と環境適応―  [Not invited]
    池田透
    北海道大学文学研究科公開シンポジウム『北方的−北方研究の構築と展開  2006  札幌
  • Problems in controlling invasive alien raccoons in Hokkaido, Japan.  [Not invited]
    Ikeda T, Abe G, Masuyama Y, Tatsuzawa S
    Hokkaido University International Symposium on Sustainable Development  2006  札幌
  • Social consciousness toward invasive raccoon issues in Japan.  [Not invited]
    Ikeda T, Abe G, Tatsuzawa S
    IX International Mammalogical Congress  2005  札幌
  • アライグマ侵入地域における住民意識調査  [Not invited]
    池田透, 立澤史郎
    野生生物保護学会  2005  金沢市
  • 天売島ノネコ対策における合意形成のための住民意識調査  [Not invited]
    池田透, 立澤史郎
    日本生態学会  2005  大阪
  • 個体間距離から見るアライグマとエゾタヌキの種間関係  [Not invited]
    阿部豪, 池田透, 立澤史郎
    日本生態学会  2005  大阪
  • 自然遺産をめぐる諸問題  [Invited]
    池田透
    日本学術会議第1部・北海道大学主催シンポジウム『文化の問題としての環境』  2005  札幌
  • Reproductive characteristics of the feral raccoon in Hokkaido, Japan.  [Not invited]
    Asano M, Matoba Y, Ikeda T, Suzuki M, Asakawa M, Ohtaishi N
    IX International Mammalogical Congress  2005  札幌
  • An overview of internal parasites and food habits of feral raccoons in Hokkaido, Japan.  [Not invited]
    Matoba Y, Asano M, Masubuchi H, Ikeda T, Asakawa M
    IX International Mammalogical Congress  2005  札幌
  • Home range and habitat use of the raccoon dog in a raccoon complex.  [Not invited]
    Abe G, Ikeda T, Tatsuzawa S
    IX International Mammalogical Congress  2005  札幌
  • Control of the invasive raccoon in Hokkaido, Japan. Current status and problems to be solved-  [Not invited]
    Ikeda T, Asano M, Matoba Y, Abe G, Asakawa M
    IX International Mammalogical Congress  2005  札幌
  • 北海道における侵略的外来種問題の諸相−アライグマ管理問題を中心に− Aspects of the Invasive Alien Species issues in Hokkaido : with special reference to the invasive alien raccoon  [Not invited]
    池田透
    北海道大学-オークランド大学共同国際シンポジウム Hokkaido University ? Univertsuty of Auckland Joint  2005  札幌
  • Present status of the native raccoon-dogs under the eradication program of the alien invasive raccoons in the Nopporo Forest Park, Hokkaido, Japan.  [Not invited]
    Abe G, Ikeda T, Tatsuzawa S
    International Conference on Assessment and control of biological invasion risks  2004  横浜市
  • An overview of internal parasites and food habits of feral raccoons (Procyon lotor) in Hokkaido, Japan.  [Not invited]
    Matoba Y, Asano M, Masubuchi I, Ikeda T, Asakawa M
    International Conference on Assessment and control of biological invasion risks  2004  横浜市
  • Social consciousness of Japanese people toward invasive raccoons  [Not invited]
    Ikeda T, Abe G, Tatsuzawa S
    International Conference on Assessment and control of biological invasion risks  2004  横浜市
  • 北海道野幌森林公園における外来アライグマと在来エゾタヌキの関係(2) ?エゾタヌキの生息数推定とアライグマ対策への提言-  [Not invited]
    阿部豪, 池田透, 立澤史郎, 浅川満彦, 的場洋平
    日本生態学会  2004  釧路市
  • 北海道野幌森林公園における外来アライグマと在来エゾタヌキの関係(1) ?空間利用からみた種間関係-  [Not invited]
    池田透, 阿部豪, 立澤史郎
    日本生態学会  2004  釧路市
  • 空間利用から見た外来アライグマと在来エゾタヌキの種間関係  [Not invited]
    阿部豪, 池田透
    日本哺乳類学会  2004  厚木市
  • ニュージーランドにおける外来種対策と在来種保護 ?Karori Wildlife SanctuaryとTiritiri Matangi Islandの事例から-  [Not invited]
    池田透, 立澤史郎, 鈴木克哉
    日本哺乳類学会  2004  厚木市
  • 「移入哺乳類の現状と対策」  [Not invited]
    『遺伝』  1998

Works

  • 「移入アライグマの現状と問題点」,苫小牧市博物館講座
    2000
  • 「アライグマをはじめとする移入動物の現状と課題」,空知支庁『アライグマをはじめとする移入動物問題を考える』フォーラム基調講演
    2000

MISC

Research Grants & Projects

  • Developing tools for invasive non-native species management considering invasion stage and feasibility
    Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
    Date (from‐to) : 2020/04 -2023/03 
    Author : 鈴木 嵩彬, 久保 雄広, 池田 透
  • 侵略的外来哺乳類の防除政策決定プロセスのための対策技術の高度化
    環境省:環境研究総合推進費
    Date (from‐to) : 2020/04 -2023/03 
    Author : 代表:城ヶ原貴通、ST3:淺野玄、池田透
  • JSPS:Bilateral program(Joint research project)
    Date (from‐to) : 2018/04 -2020/03 
    Author : IKEDA Tohru
  • 外来アライグマの営巣特性調査と対策コスト削減のための巣箱型ワナの開発
    富士フイルム:グリーンファンド
    Date (from‐to) : 2016/09 -2017/08 
    Author : 池田 透
  • 外来種アライグマ対策コスト削減のための巣箱型罠の開発と商品化
    ノーステック財団:イノベーション創出研究支援事業
    Date (from‐to) : 2016/08 -2017/02 
    Author : 池田 透
  • Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
    Date (from‐to) : 2013/04 -2016/03 
    Author : TAGUCHI HIROMI, TAKAHASHI A. Mitsuhiko, IKEDA Tohru, IGOTA Hiromasa, SASAKI Shiro, KITOU Syuichi, MIURA Shingo, YOKOHARI Makoto, EBIHARA Ippei
     
    In urban areas of Japan (Sapporo, Sendai, Uozu, Toyama, etc.) and abroad (Nairobi, Milwaukee, Iowa City, etc.), problems related to large wild mammals are increasing. These cities are under pressure to cope with the wildlife. Governments, local and national, are only engaging in damage control and cannot foresee fundamental solutions. To operate wildlife control smoothly, agencies needs to collaborate with specialists and the local community, which could range from urban residents, as in Japan and the United States, to ethnic communities as in the case of Nairobi. In Kenya, the national wildlife agency is moving to delegate its powers to local communities. Our research suggests that in many jurisdictions, private land ownership has become stronger and thus complicating the task of agencies to control wildlife in the field. Wildlife control methods are also compelled to adjust to the opinions of urbanites which often are at odds with traditional wildlife management.
  • 野生動物の生息域拡大期における都市防衛システムの開発に関する環境学研究
    文部科学省:科学研究費補助金 基盤研究(B)
    Date (from‐to) : 2013/04 -2016/03 
    Author : 田口洋美
  • 外来動物の根絶を目指した総合的防除手法の開発
    環境省:環境研究総合推進費
    Date (from‐to) : 2011/04 -2014/03 
    Author : 五箇公一
  • Cultural adaptation in the forest areas in the Russian Far East
    文部科学省:科学研究費補助金 基盤研究(A)
    Date (from‐to) : 2009/04 -2013/03 
    Author : 佐々木 史郎, SASAKI, Shiro, 国立民族学博物館, 先端人類科学研
     
    The Russian Far East, which is located in the opposite side of the Sea of Japan, is rich in forest. In this research project, we researched and analyzed the culture that has been grown in this area from two sides of adaptation; one was the adaptation to the natural environment and the other was that to political and economic environment, which was historically cleated by human activities. As a result, we could show that the relation between culture and political-economic environment was more intimate, direct, and restrained than that between culture and nature and that, at the same time, it is more fragile and less flexible.
  • 侵略的外来中型哺乳類の効果的・効率的な防除技術の開発に関する研究
    環境省:生物多様性関連技術開発等推進事業
    Date (from‐to) : 2009/04 -2012/03 
    Author : 小倉剛
  • Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)
    Date (from‐to) : 2009 -2012 
    Author : SASAKI Shiro, SATO Hiroyuki, TAGUCHI Hiromi, IKEDA Toru, TAKAKURA Hiroki, ONISHI Hideyuki, SI Qinfu, IGAUE Naho, YASUKI Shin'chiro, NEGISHI Yo, MATSUMORI Tomohiko, NAKAMURA Kazuyuki, ARGUDIAVA Yu. V., BEREZNITSKY S. V., KHISAMUTDINOV A.a., KRADIN N.n., LATUSHKO Yu.v., NIKITIN Yu.g., SAMAR A.p, HUAN Xiaodong, LIANG Song, HOU Ru
     
    The Russian Far East, which is located in the opposite side of the Sea of Japan, is rich in forest. In this research project, we researched and analyzed the culture that has been grown in this area from two sides of adaptation; one was the adaptation to the natural environment and the other was that to political and economic environment, which was historically cleated by human activities. As a result, we could show that the relation between culture and political-economic environment was more intimate, direct, and restrained than that between culture and nature and that, at the same time, it is more fragile and less flexible.
  • Research no Ainu Materials in Museums in Hokkaido
    文部科学省:科学研究費補助金 基盤研究(B)
    Date (from‐to) : 2005/04 -2008/03 
    Author : 小谷 凱宣, 南山, 人文学部, 佐々木 史郎, SASAKI, Shiro, 国立民族学博物館, 研究戦略セン
     
    The main purpose of this research project was the documentation of the Ainu collections reserved in museums in Hokkaido. We chose the following three museums in Hokkaido, that is, Museum of the Botanical Garden of Field Science Center for Northern Biosphere in Hokkaido University, Hakodate City Museum of Northern Peoples, and Museum of Matsumae Castle, reconfirmed the collections in each museum, made documents and photographs of each material, and researched the historical background of the collections. As a result of our research activities in three years, we could document all the materials (about 2, 600) of the collection of the Museum of Botanical Garden of Hokkaido University, all the materials (about 320) of the Museum of Matsumae Castle, and about 700 materials from 2, 500 of Hakodate City Museum of Northern Peoples. Adding to the documentation of the collections, we tried to clarify the historical background of their formation. Especially, as to the collection of the Museum of the Botanical Garden, we paid much attention to the fact that a government organization, the Department for Development of Hokkaido, had had much to do with the collection of Ainu materials and that some foreign advisers employed by the Japanese government helped it. Therefore we dispatched some research members to United States to study archives of foreign advisers that had visited Japan and that had concerned the collection of Ainu materials. This project clarified that the Ainu collections of these three museums were established in the same period, that is, from 1880s to 1920s, during which well documented Ainu collections of museums in Europe and North America were established, and that we can see some parallels between them. The results of our research and documentation can be used as references for identification of Ainu collections and materials in other museums in Japan, which have no documents and information. Combining the results of the previous research projects on the Ainu collections of European, American and Russian museums, this project will contribute to the development of Ainu study and the revitalization of Ainu culture.
  • Wildlife resource use in Siberia
    Date (from‐to) : 2008
  • 侵入種生態リスクの評価手法と対策に関する研究
    環境省:環境研究総合推進費
    Date (from‐to) : 2004/04 -2007/03 
    Author : 五箇公一
  • Research no Ainu Materials in Museums in Hokkaido
    Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
    Date (from‐to) : 2005 -2007 
    Author : SASAKI Shiro, OGIHARA Shinko, SASAKI Toshikazu, TAKARABE Kae, TANIMOTO Akihisa, KATO Masaru
     
    The main purpose of this research project was the documentation of the Ainu collections reserved in museums in Hokkaido. We chose the following three museums in Hokkaido, that is, Museum of the Botanical Garden of Field Science Center for Northern Biosphere in Hokkaido University, Hakodate City Museum of Northern Peoples, and Museum of Matsumae Castle, reconfirmed the collections in each museum, made documents and photographs of each material, and researched the historical background of the collections. As a result of our research activities in three years, we could document all the materials (about 2, 600) of the collection of the Museum of Botanical Garden of Hokkaido University, all the materials (about 320) of the Museum of Matsumae Castle, and about 700 materials from 2, 500 of Hakodate City Museum of Northern Peoples. Adding to the documentation of the collections, we tried to clarify the historical background of their formation. Especially, as to the collection of the Museum of the Botanical Garden, we paid much attention to the fact that a government organization, the Department for Development of Hokkaido, had had much to do with the collection of Ainu materials and that some foreign advisers employed by the Japanese government helped it. Therefore we dispatched some research members to United States to study archives of foreign advisers that had visited Japan and that had concerned the collection of Ainu materials. This project clarified that the Ainu collections of these three museums were established in the same period, that is, from 1880s to 1920s, during which well documented Ainu collections of museums in Europe and North America were established, and that we can see some parallels between them. The results of our research and documentation can be used as references for identification of Ainu collections and materials in other museums in Japan, which have no documents and information. Combining the results of the previous research projects on the Ainu collections of European, American and Russian museums, this project will contribute to the development of Ainu study and the revitalization of Ainu culture.
  • Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
    Date (from‐to) : 2004 -2005 
    Author : IKEDA Tohru, TATSUZAWA Shiro
     
    We conducted the attitude survey for the purpose of consensus building for the countermeasure against invasive alien raccoons in 4 areas in Hokkaido. As for the understanding for the invasive alien species issues in local residents, the uniform understanding goes around through press coverage, and it became clear that most local residents don't have consciousness for the ecological conservation. The consensus building based on ecological conservation is absolutely imperative for the long-term countermeasures against the invasive alien species, and it is necessary that all local residents understand the actual condition correctly. Reinforcement of school education and enlightenment by local museum for the diffusion on invasive alien issues remains to be solved. Many young people don't pay attention on the invasive raccoon issues and show strong resistance to the extermination of raccoons based on the animal protection or animal rights. It is also important to provide appropriate information especially to young generation so that young people can reconsider this problem on an individual basis, not through the standardized idea.
  • 侵入生物による生物多様性影響機構に関する研究
    環境省:地球環境研究総合推進費
    Date (from‐to) : 2001/04 -2004/03 
    Author : 五箇公一
  • The Study of Survival Strategy of Hunter-Herders in Siberia
    文部科学省:科学研究費補助金 基盤研究(A)
    Date (from‐to) : 1997/04 -2000/03 
    Author : 斎藤 晨二, SAITO, Shinji, 人文社会学
     
    The Sakha in the Yakuts region not only present us a living example of the survival of horse herding peoples in the modern world, but they exemplify a historical account of the adaptation of man toward severe climates. This field survey studied the Sakha during summer soltice festivities, taking in video recordings of their lives, and audio recordings of legends and folk songs. The survey indicated evidence that the younger generation was apt toward maintaining the traditional culture, along with their older generation. Horse herding is conducted on relatively small scale grasslands in Alass, formed by thawing of permafrost ground. Horse grazing is done in small area segments of one male unit, and from this practice, it is apparent that the original Mongol grassland herding developed into herding with the two distinct purposes : one, for raising working animals, i.e. horses trained for riding and working ; the other, for raising livestock for meat and leather products. The Sakha consider both purposes as equally important. Reindeer herding is facing extinction, and this has been accelerated by factors such as the former Soviet policy toward ethnic cultures, environmental destruction, and recent Russian economic crisis. Such factors have presented an extreme challenge toward the survival and maintenance of traditional cultures. However, it should be noted that the Nenets of Gydan Peninsular have been able to maintain their traditional lifestyle, consisting of reindeer herding, fishing, and hunting. With the disappearance of traditional life sustenance activities, such as reindeer herding, hunting, and fishing, hunting for wild animals for the purpose of marketing meat has become increasingly important. Furthermore, the recent onset of Western marketing principles have had a severe impact on the traditional markets for wild meat and fur, established during the Soviet era. Recent environmental protection measures have posed strict limits on hunting and fishing activities, further jeopardizing the continuation of traditional cultures and lifestyles.
  • The Study of Survival Strategy of Hunter-Herders in Siberia
    Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A).
    Date (from‐to) : 1997 -1999 
    Author : SAITO Shinji, TAKAKURA Hiroki, IKEDA Tohru, YOSHIDA Atsushi
     
    The Sakha in the Yakuts region not only present us a living example of the survival of horse herding peoples in the modern world, but they exemplify a historical account of the adaptation of man toward severe climates. This field survey studied the Sakha during summer soltice festivities, taking in video recordings of their lives, and audio recordings of legends and folk songs. The survey indicated evidence that the younger generation was apt toward maintaining the traditional culture, along with their older generation. Horse herding is conducted on relatively small scale grasslands in Alass, formed by thawing of permafrost ground. Horse grazing is done in small area segments of one male unit, and from this practice, it is apparent that the original Mongol grassland herding developed into herding with the two distinct purposes : one, for raising working animals, i.e. horses trained for riding and working ; the other, for raising livestock for meat and leather products. The Sakha consider both purposes as equally important. Reindeer herding is facing extinction, and this has been accelerated by factors such as the former Soviet policy toward ethnic cultures, environmental destruction, and recent Russian economic crisis. Such factors have presented an extreme challenge toward the survival and maintenance of traditional cultures. However, it should be noted that the Nenets of Gydan Peninsular have been able to maintain their traditional lifestyle, consisting of reindeer herding, fishing, and hunting. With the disappearance of traditional life sustenance activities, such as reindeer herding, hunting, and fishing, hunting for wild animals for the purpose of marketing meat has become increasingly important. Furthermore, the recent onset of Western marketing principles have had a severe impact on the traditional markets for wild meat and fur, established during the Soviet era. Recent environmental protection measures have posed strict limits on hunting and fishing activities, further jeopardizing the continuation of traditional cultures and lifestyles.
  • Ethnological Study of Herders in Siberia
    文部科学省:科学研究補助金 国際学術研究
    Date (from‐to) : 1993/04 -1996/03 
    Author : 斎藤 晨二, SAITO, Shinji, 教養部, 斉藤 晨二, 教養部
     
    This research project is an attempt to show how human beings in the polar regions of in the Northern hemisphere have adjusted themselves to the cold climates. The project followed the Evens and the Evenks living in the mountain tundra region and the taiga region of the Sakha Republic and Irkutsk Region, and investigated their reindeer herding and hunting in every season except for the coldest period. The project also observed horse breeding by the Yakuts, recorded some of the "olonkho, "a traditional lyric, and carried out a linguistic investigation of some minority peoples in the areas.Furthermore, it looked into reindeer herding in the tundra and hunting in the taiga in North-East Siberia, and studied the traditional way of life that has survived among the Nenets in West Siberia. Our research revealed that the traditional techniques and ways of life unique to the indigenous peoples in siberia have survived even through the Soviet era. To make more accurate reserach into East Siberia, which has seen a rapid industrial development in recent years, and West Siberia, which has remained undeveloped, will be of crucial importance in keeping track of the valuable and rare cultures that human beings have created in such cold soil. Implementing possible survival strategies for keeping up the peoples' cultural traditions will be beneficial for them, and at the same time it will give us some key clues in dealing with the racial and environmental problems that we face today in various parts of the world.
  • Ethnological Study of Herders in Siberia
    Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research Grant-in-Aid for international Scientific Research
    Date (from‐to) : 1993 -1995 
    Author : SAITO Shinji, IKEDA Tohru, SASAKI Shiro, INOUES Koichi
     
    This research project is an attempt to show how human beings in the polar regions of in the Northern hemisphere have adjusted themselves to the cold climates. The project followed the Evens and the Evenks living in the mountain tundra region and the taiga region of the Sakha Republic and Irkutsk Region, and investigated their reindeer herding and hunting in every season except for the coldest period. The project also observed horse breeding by the Yakuts, recorded some of the "olonkho, "a traditional lyric, and carried out a linguistic investigation of some minority peoples in the areas.Furthermore, it looked into reindeer herding in the tundra and hunting in the taiga in North-East Siberia, and studied the traditional way of life that has survived among the Nenets in West Siberia. Our research revealed that the traditional techniques and ways of life unique to the indigenous peoples in siberia have survived even through the Soviet era. To make more accurate reserach into East Siberia, which has seen a rapid industrial development in recent years, and West Siberia, which has remained undeveloped, will be of crucial importance in keeping track of the valuable and rare cultures that human beings have created in such cold soil. Implementing possible survival strategies for keeping up the peoples' cultural traditions will be beneficial for them, and at the same time it will give us some key clues in dealing with the racial and environmental problems that we face today in various parts of the world.
  • Development of Multivariate Analysis for Mesh Data with Preliminary Information and its Application
    Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research Grant-in-Aid for General Scientific Research (C)
    Date (from‐to) : 1993 -1994 
    Author : SAITO Takayuki, IKEDA Tohru, OTSU Tatsuo
     
    When an environmental or ecological survey is conducted in a region, observations are often taken at each mesh cell in the region and recorded as multivariate data. In certain situations, there may be prior information about the variates or the cells, which is provided independently of the survey. In this study, we developed two procedures to analyze the multivariate data, incorporationg the prior infromation in the analyzes. One procedure deals with asymmetrical relationship among cells and performs analysis on the basis of least squares criterion. The otherdeals with the information about the variates or the cells and performs analysis accoding to Bays estimation. Both procedures have been found to work successfully. For possible application of the procedures, ecological data files were constructed for investigatation of home ranges of raccoons and other animals.
  • 野生有害哺乳動物に対する食物嫌悪条件づけの応用研究
    日本学術振興会:科学研究費助成事業 奨励研究(A)
    Date (from‐to) : 1993 -1993 
    Author : 池田 透
     
    野生有害獣対策としての野外における食物嫌悪条件づけの効果を検討した。近年人間生活圏への侵入が問題化しているキタキツネを対象とし、恵庭市郊外のキタキツネの定期的採食が観察される地域を調査地に選択した。 標的食物としてはキツネが調査地において日常的に摂取しているニジマスを用い、魚切片に相当量の粉末塩化リチウム(安全性の高い催吐剤)を混入してキツネの餌場に設置し、摂取後の採食行動の変化を自動車内から観察した。実験スケジュールは第一段階(塩化リチウム未処理餌呈示:7日間)、第二段階(塩化リチウム処理餌呈示:7日間)、第三段階(再度未処理餌呈示:7日間)を設定し、餌の消費数・餌場への侵入回数を記録した。 個体識別されたキツネは5頭であり、うち3頭が複数回確認され2頭が塩化リチウムで処理された標的食物を摂取した(1頭は1回、もう1頭は2回)。第二段階での塩化リチウム処理餌摂取後、直ちに餌消費数・餌場侵入回数は激減し、特に第二段階後半ではともに0となり、キツネの姿も確認されなかった。だが、第三段階にはいるとすぐにキツネがあらわれ、その後餌消費数・餌場侵入回数ともに増加回復を示した。 一般に食物嫌悪条件づけは少ない試行数で長期的効果が得られることが特徴とされてきたが、今回は標的食物回避の兆候は直ちにあらわれたものの、効果は短期的なものであった。その原因としては、キツネが塩化リチウム処理餌と未処理餌を味覚・嗅覚的に識別してしまった可能性があること、および今回のように標的食物が日常的に摂取されている場合、先行する安全学習の効果が強く影響を与えていることが予想され、標的食物投与の方法・投与間隔の問題など、厳密な実験下での効果的条件づけスケジュールの検討が今後の課題であろう。
  • 野生有害哺乳動物に対する食物嫌悪条件づけの応用研究
    日本学術振興会:科学研究費助成事業 奨励研究(A)
    Date (from‐to) : 1992 -1992 
    Author : 池田 透
  • Comparative Study of the Circum-polar Cultures
    Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research Grant-in-Aid for Co-operative Research (A)
    Date (from‐to) : 1991 -1992 
    Author : OKADA Hiroaki, IKEDA Tohru, KISHIGAMI Nobuhiro, MIYAOKA Osahito, KOTANI Yoshinobu, OKADA Atsuko
     
    Comparative study of arctic and sub-arctic cultures has been undertaken by a team of researchers in cultural anthropology, linguistics, history, ecology, etc. for the period of two years starting in 1991. Sixteen investigators in 1991 and fifteen investigators in 1992, including the head investigator, read papers in turn at four consective meetings at Sapporo, Nagoya and Abashiri. A substantial number of out research team also partipatipated in the 6th and 7th international symposia on northern peoples in Abashiri City as contributors, chairpersons and/or organizers. Many topics on the native cultures of Scandinavia, Siberia and North America were covered by us either at the regular meetings or at the symposia stated above. An emphasis was also placed upon the culture of the Ainu people in northern Japan ; some of the investigators read papers at a symposium on the Ainu language and culture organized by O.Miyaoka in November, 1991. In addition to our team members, specialists in other related fields, such as the one in physical anthropology, made valuable contributions to the accumulation of out knowledge on circum-polar peoples. The results of our research for the past two years are now being organized into the form of a final report of our team. It consists of ten papers, including three papers on the Ainu, two on the Northwest Coast Indians, one on Inuit and one on Sami (formerly known as Lapp), all of which fall into the category of cultural anthropology. Two other papers deal with the languages of Scandinavian and northeast Asian natives. Our final report is also supplemented by a contribution by our American colleague, W.M.Olson, who collaborated with the Okadas in studying Tlingit and Haida Indians in southeastern Alaska. while we missed to incorporate articles on Siberian ethnography in this volume, at least three papers by our team members were already publised in 1992, in the "Anthropology of the North-culture and ecology in the circum-polar area" edited by H.and A.Okada. The final report of out research team should go hand in hand with the book printed ten months ago. Taken together, we may safely say that our team contributed to the study of arctic and subarctic peoples and cultures in this country. Unpublished materials related to out research are collected and put into file either at Hokkaido University or at Hokkaido Museum of Northern Peoples for further use.
  • Study of Invasive Alien Species Issues
    Date (from‐to) : 1989

Educational Activities

Teaching Experience

  • 博士論文指導特殊演習
    開講年度 : 2019
    課程区分 : 博士後期課程
    開講学部 : 文学研究科
  • 博士論文指導特殊演習Ⅰ
    開講年度 : 2019
    課程区分 : 博士後期課程
    開講学部 : 文学院
  • 修士論文
    開講年度 : 2019
    課程区分 : 修士課程
    開講学部 : 文学研究科
  • 修士論文・特定課題指導特殊演習
    開講年度 : 2019
    課程区分 : 修士課程
    開講学部 : 文学研究科
  • 国際教養演習Ⅱ
    開講年度 : 2019
    課程区分 : 学士課程
    開講学部 : 文学部
  • 卒業論文
    開講年度 : 2019
    課程区分 : 学士課程
    開講学部 : 文学部
  • 修士論文・特定課題指導特殊演習
    開講年度 : 2019
    課程区分 : 修士課程
    開講学部 : 文学院

Social Contribution

Social Contribution

Social Contribution

  • 大分市アライグマ対策アドバイザー
    Date (from-to) : 2016-Today
    Role : Lecturer
  • 環境省野生生物研修
    Date (from-to) : 2011-Today
    Role : Lecturer
    Sponser, Organizer, Publisher  : 環境省
  • 旭川市アライグマセミナー
    Date (from-to) : 2019/03/23
    Role : Lecturer
    Sponser, Organizer, Publisher  : 旭川市生物多様性保全推進協議会
    Event, Program, Title : 旭川市生物多様性保全推進協議会
  • アライグマ講演会
    Date (from-to) : 2018/07/08
    Role : Lecturer
    Sponser, Organizer, Publisher  : 深川ひきがえるバスターズ、 深川市環境衛生協会
  • 後志アライグマ研修会アライグマ対策講演
    Date (from-to) : 2018/07/02
    Role : Lecturer
    Sponser, Organizer, Publisher  : 北海道後志総合振興局
    Event, Program, Title : 後志アライグマ研修会
  • アライグマ講演会
    Date (from-to) : 2017/10/25
    Role : Lecturer
    Sponser, Organizer, Publisher  : 北海道上川総合振興局
    Event, Program, Title : アライグマ講演会
  • 外来種リスクから生物多様性を考えるシンポジウム
    Date (from-to) : 2015/10/25
    Role : Panelist
    Sponser, Organizer, Publisher  : おおいた環境保全フォーラム
  • 移入アライグマの現状と問題点
    Date (from-to) : 2000
    Role : Lecturer
    Sponser, Organizer, Publisher  : 苫小牧市博物館
    Event, Program, Title : 苫小牧市博物館講座
  • アライグマをはじめとする移入動物の現状と課題
    Date (from-to) : 2000
    Role : Lecturer
    Sponser, Organizer, Publisher  : 空知支庁
    Event, Program, Title : 空知支庁『アライグマをはじめとする移入動物問題を考える』フォーラム

Media Coverage

  • テレビ朝日 アライグマ問題へのコメント
    Date : 2018/12
    Publisher, broadcasting station: テレビ朝日
    Program, newspaper magazine: テレビ朝日
    Media report

Academic Contribution

  • タンチョウも住める町づくり協議会生息環境専門部会
    Date (from-to) :2019/02/22
    Organizer, responsible person: タンチョウも住める町づくり協議会、日本生態系協会
  • アライグマヒアリング
    Date (from-to) :2019/02
    Type: Academic research
    Organizer, responsible person: (株)総合環境計画


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