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Development of optimal management strategies to control mammal populations incorporating behaviorally mediated indirect effect

Research Project

Project/Area Number 17H01916
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental and ecological symbiosis
Research InstitutionNational Institute for Environmental Studies

Principal Investigator

Yokomizo Hiroyuki  国立研究開発法人国立環境研究所, 環境リスク・健康研究センター, 主任研究員 (30550074)

Co-Investigator(Kenkyū-buntansha) 宮下 直  東京大学, 大学院農学生命科学研究科(農学部), 教授 (50182019)
中島 啓裕  日本大学, 生物資源科学部, 専任講師 (80722420)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2019: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2017: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Keywords大型哺乳類 / カメラトラップ / 個体数密度推定 / ニホンイノシシ / RESTモデル / 焼きなまし法 / 哺乳類 / 人間活動 / 個体群管理 / 自動撮影カメラ / 行動介在間接効果 / 農業被害 / 個体数推定 / 行動変化 / 状態空間モデル
Outline of Final Research Achievements

On the southern part of the Boso Peninsula, in Chiba Prefecture, Japan, we conducted a field survey using camera traps to examine how the heterogeneity of landscape and anthropogenic activity affects the population density and population parameters of wild boars (Sus scrofa). Our results suggest that the high mortality rate of juveniles near human habitation areas was due to capture by trapping, and the high density of adult animals near such areas may have been due to the increased migration of individuals inside forests. Abandoned agricultural areas were used by the boars throughout the year, and catchability tended to be relatively high in winter.
We developed an algorithm that calculated the optimum spatial allocation of hunting efforts to minimize the total number of boars in accordance with, for example, changes in the area of agricultural land and in the hunting population in relation to human activities.

Academic Significance and Societal Importance of the Research Achievements

近年日本各地でイノシシやシカなどの野生生物が増加し、その管理が重要課題となっている。本研究では、「人為に起因する行動変化とそれがもたらす個体群レベルでの影響を明示的に組み込んだ管理戦略」を構築するため、捕獲やそれ以外の人為活動がもたらす行動介在間接効果を考慮に入れて、イノシシなどの哺乳類の個体群成長率や捕獲効率を空間明示的に予測した。人為活動と個体群パラメータの関係などを、フィールド調査により明らかにした。合計個体数を最小にするための捕獲努力の最適空間配分を計算するアルゴリズムを開発した。こうした成果は、人口減少社会を迎えた日本などにおける野生動物の効率的な管理に有用となると考えられる。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (24 results)

All 2020 2019 2018 Other

All Int'l Joint Research (1 results) Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 5 results) Presentation (14 results) (of which Int'l Joint Research: 1 results,  Invited: 3 results) Remarks (1 results)

  • [Int'l Joint Research] Queensland University of Technology(オーストラリア)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Landscape-scale estimation of forest ungulate density and biomass using camera traps: Applying the REST model2020

    • Author(s)
      Nakashima Yoshihiro、Hongo Shun、Akomo-Okoue Etienne Fransois
    • Journal Title

      Biological Conservation

      Volume: 241 Pages: 108381-108381

    • DOI

      10.1016/j.biocon.2019.108381

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Predation on an introduced bullfrog <i>Lithobates catesbeiana</i> by native vertebrate predators in the Boso Peninsula, Japan2020

    • Author(s)
      中島 啓裕
    • Journal Title

      Honyurui Kagaku (Mammalian Science)

      Volume: 60 Issue: 1 Pages: 2-2

    • DOI

      10.11238/mammalianscience.60.2

    • NAID

      130007798004

    • ISSN
      0385-437X, 1881-526X
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Potentiality and limitations of N‐mixture and Royle‐Nichols models to estimate animal abundance based on noninstantaneous point surveys2019

    • Author(s)
      Nakashima Yoshihiro
    • Journal Title

      Population Ecology

      Volume: 62 Issue: 1 Pages: 151-157

    • DOI

      10.1002/1438-390x.12028

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Camera trapping is opening up a new future in mammalogy: importance of field experiences and statistical thoughts2019

    • Author(s)
      中島 啓裕
    • Journal Title

      Honyurui Kagaku (Mammalian Science)

      Volume: 59 Issue: 1 Pages: 111-116

    • DOI

      10.11238/mammalianscience.59.111

    • NAID

      130007694969

    • ISSN
      0385-437X, 1881-526X
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Estimating range expansion of wildlife in heterogeneous landscapes: A spatially explicit state‐space matrix model coupled with an improved numerical integration technique2019

    • Author(s)
      Yutaka Osada, Takeo Kuriyama, Masahiko Asada, Hiroyuki Yokomizo, Tadashi Miyashita
    • Journal Title

      Ecology and Evolution

      Volume: 9 Issue: 1 Pages: 318-327

    • DOI

      10.1002/ece3.4739

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Preface: Effective management for mammal populations under uncertainty2018

    • Author(s)
      横溝裕行・鈴木牧
    • Journal Title

      Japanese Journal of Conservation Ecology

      Volume: 23 Issue: 1 Pages: 5-7

    • DOI

      10.18960/hozen.23.1_5

    • NAID

      130007417963

    • ISSN
      1342-4327, 2424-1431
    • Related Report
      2017 Annual Research Report
  • [Journal Article] Exploring the drivers of wild boar population dynamics using a state-space model with Bayesian model averaging2018

    • Author(s)
      長田穣・栗山武夫・浅田正彦・横溝裕行・宮下直
    • Journal Title

      Japanese Journal of Conservation Ecology

      Volume: 23 Issue: 1 Pages: 29-38

    • DOI

      10.18960/hozen.23.1_29

    • NAID

      130007418034

    • ISSN
      1342-4327, 2424-1431
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of invasive raccoons and civets on the population density of native raccoon dogs2018

    • Author(s)
      栗山武夫・小井土美香・長田穣・浅田正彦・横溝裕行・宮下直
    • Journal Title

      Japanese Journal of Conservation Ecology

      Volume: 23 Issue: 1 Pages: 9-17

    • DOI

      10.18960/hozen.23.1_9

    • NAID

      130007418059

    • ISSN
      1342-4327, 2424-1431
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] 人里近くの知られざる哺乳類の世界:房総半島の大規模カメラ調査から見えてきたこと2020

    • Author(s)
      中島啓裕・矢島豪太・宮下直・横溝裕行
    • Organizer
      生態学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] RESTモデル、CPUE、景観構造を統合した個体群モデルの開発2019

    • Author(s)
      笠田実・横溝裕行・宮下直
    • Organizer
      日本哺乳類学会2019年度大会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] カメラトラップと捕獲データから推定するイノシシの繁殖期前後の生態特性の変化2019

    • Author(s)
      横山雄一、矢島豪太、中島啓裕、宮下直
    • Organizer
      第66回日本生態学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 自動撮影カメラを用いたシカ・イノシシの個体数・密度推定2019

    • Author(s)
      中島啓裕
    • Organizer
      日本生態学会第65回全国大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 房総半島における自動撮影カメラを用いたイノシシの産仔数に影響する景観構造の解明2019

    • Author(s)
      矢島 豪太, 黒瀬 弘毅, 富澤 眞柚, 中島 啓裕
    • Organizer
      日本哺乳類学会2018年度大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] イノシシのメス親が連れているウリ坊の数は何によって決定されるか?自動撮影カメラを用いた検証2019

    • Author(s)
      矢島豪太, 黒瀬弘毅, 横溝裕行, 宮下直, 中島啓裕
    • Organizer
      第66回日本生態学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Optimal management strategies to control mammal populations incorporating behaviorally mediated indirect effect2018

    • Author(s)
      Yokomizo H, Y. Nakashima, Y. Osada, K. Kagawa, T. Kuriyama, M. Kasada, M. Suzuki, G. Yajima, N. Ishizuka, M. Asada, Y. Yokoyama, T. Miyashita
    • Organizer
      2018 Annual Meeting of the Society for Mathematical Biology & the Japanese Society for Mathematical Biology
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 自動撮影カメラを用いたシカとイノシシの同時広域密度推定2018

    • Author(s)
      中島啓裕
    • Organizer
      日本哺乳類学会2018年度大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 画像から個体識別できない場合の個体数密度の推定方法2018

    • Author(s)
      中島啓裕
    • Organizer
      日本哺乳類学会2018年度大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 自動撮影カメラが拓く新しい哺乳類研究ー現場の勘と統計的思考の協働ー2018

    • Author(s)
      自動撮影カメラが拓く新しい哺乳類研究ー現場の勘と統計的思考の協働ー自動撮影カメラが拓く新しい哺乳類研究ー現場の勘と統計的思考の協働ー
    • Organizer
      日本哺乳類学会2018年度大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 野生生物の保全・管理のための数理的研究2018

    • Author(s)
      横溝裕行
    • Organizer
      巌佐庸教授退官記念シンポジウム
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] 千葉県におけるイノシシの捕獲ワナ設置位置の配置の改善2018

    • Author(s)
      横山雄一・笠田実・宮下直
    • Organizer
      第65回日本生態学会全国大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 自動撮影カメラによる地上性動物の密度推定―個体識別を必要としない手法の開発と検証2018

    • Author(s)
      中島啓裕・深澤圭太・鮫島弘光
    • Organizer
      第65回日本生態学会全国大会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] カメラトラップと罠捕獲を利用したイノシシの個体数推定法の開発2018

    • Author(s)
      笠田実・横溝裕行・中島啓裕・矢島豪太・横山雄一・宮下直
    • Organizer
      第65回日本生態学会全国大会
    • Related Report
      2017 Annual Research Report
  • [Remarks] 人間活動による行動変化を組み込んだ大型哺乳類の個体群管理戦略の構築

    • URL

      http://www.nies.go.jp/subjects/2017/23959_fy2017.html

    • Related Report
      2017 Annual Research Report

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Published: 2017-04-28   Modified: 2021-02-19  

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