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2011 Fiscal Year Final Research Report

Evaluation of trophic magnification and ecological risk of persistent toxic substances by integration of bio-geochemistry and numerical analysis

Research Project

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Project/Area Number 21310043
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Risk sciences of radiation/Chemicals
Research InstitutionEhime University

Principal Investigator

TAKAHASHI Shin  愛媛大学, 沿岸環境科学研究センター, 准教授 (30370266)

Co-Investigator(Kenkyū-buntansha) ISOBE Tomohiko  愛媛大学, 上級研究員センター, 講師 (50391066)
KOJI Omori  愛媛大学, 沿岸環境科学研究センター, 准教授 (10152258)
ITSUKI Handoh  総合地球環境学研究所, 研究推進戦略センター, 特任准教授 (40446266)
Project Period (FY) 2009 – 2011
Keywords微量化学物質汚染評価 / 残留性有機汚染物質 / 臭素系難燃剤 / 食物連鎖
Research Abstract

We analyzed PCBs, brominated flame retardants(PBDEs and HBCDs) and trace elements accumulated in marine organisms at various trophic levels from open waters around Japan and off-California to evaluate their contamination status, ecological effect and trophic magnification in the food webs. Among the areas surveyed, considerable contamination of HBCDs was found in the Seto-Inland Sea and off-Miyagi. In finless porpoises from the Seto-Inland Sea, concentrations of PCBs in liver trematodeinfected individuals were significantly higher than those in non-infected ones, implying their possible immune depression. Considering the results of carbon and nitrogen isotope analyses and other biological and physicochemical parameters, nutrients cycles and species structures of each food web and isomer specific metabolism/excretion by organisms as well as their trophic levels can be suggested as key factors for the food web magnification.

  • Research Products

    (13 results)

All 2011 2010 2009

All Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (5 results) Book (1 results)

  • [Journal Article] Contamination status of POPs and BFRs and relationship with Parasitic Infection in Finless Porpoises(Neophocaena phocaenoides) from Seto Inland Sea and Omura Bay, Japan2011

    • Author(s)
      Isobe, T., Oshihoi, T., Hamada, H., Nakayama, K., Yamada, T. K., Tajima, Y., Amano, M. and Tanabe, S.
    • Journal Title

      Marine Pollution Bulletin

      Volume: 63 Pages: 564-571

    • Peer Reviewed
  • [Journal Article] Contamination status and spatial distribution of organochlorine compounds in fishes from Nansei Islands, Japan2011

    • Author(s)
      Malarvannan, G., Takahashi, S., Ikemoto, T., Isobe, T., Kunisue, T., Sudaryanto, A., Miyagi, T., Nakamura, M., Yasumura, S. and Tanabe, S.
    • Journal Title

      Marine Pollution Bulletin

      Volume: 63 Pages: 541-54

    • Peer Reviewed
  • [Journal Article] Organohalogen compounds in deep-sea fishes from the western North Pacific, off-Tohoku, Japan : Contamination status and bioaccumulation profiles2010

    • Author(s)
      Takahashi, S., Oshihoi, T., Ramu, K., Isobe, T., Ohmori, K., Kubodera, T. and Tanabe, S.
    • Journal Title

      Marine Pollution Bulletin

      Volume: 60 Pages: 187-196

    • Peer Reviewed
  • [Journal Article] Tracing anthropogenic inputs to production in the Seto Inland Sea, Japan. A stable isotope approach2010

    • Author(s)
      Miller, T. W., Omori, K., Hamaoka, H., Shibata, J. Y. and Hidejiro, O.
    • Journal Title

      Marine Pollution Bulletin

      Volume: 60 Pages: 1803-1809

    • Peer Reviewed
  • [Journal Article] On the timescales of sustainability and futurability2010

    • Author(s)
      Handoh, I. C., and Hidaka, T.
    • Journal Title

      Futures

      Volume: 42 Pages: 743-748

    • Peer Reviewed
  • [Journal Article] Storage and the regulation of body mass in animals : A general growth equation based on an energy balance model2009

    • Author(s)
      Omori, K., Sogabe, A., Hamaoka, H. and Ohnishi, H.
    • Journal Title

      Ecological Modelling

      Volume: 220 Pages: 2618-2623

    • Peer Reviewed
  • [Journal Article] Mathematical explanation for the non-linear hydrophobicity-dependent bioconcentration processes of persistent organic pollutants in phytoplankton2009

    • Author(s)
      Seto., M. and Handoh, I. C.
    • Journal Title

      Chemosphere

      Volume: 77 Pages: 679-686

    • Peer Reviewed
  • [Presentation] 臭素系難燃剤の生物濃縮とヒトのリスク評価2011

    • Author(s)
      磯部友彦
    • Organizer
      環境学会シンポジウム
    • Place of Presentation
      仙台市
    • Year and Date
      20110910-11
  • [Presentation] PCB_sおよびその他POPsによる地球汚染の実態と野生動物への影響2010

    • Author(s)
      高橋真
    • Organizer
      第52回日本環境化学会講演会「絶縁油に含まれる微量PCBの簡易測定法と微量PCB汚染廃電気機器等の無害化処理」
    • Place of Presentation
      東京
    • Year and Date
      2010-10-27
  • [Presentation] 残留性有機汚染物質の動態予測は不確実か?2010

    • Author(s)
      半藤逸樹
    • Organizer
      第19回日本環境化学討論会
    • Place of Presentation
      春日井市
    • Year and Date
      2010-06-23
  • [Presentation] Distribution and bioaccumulation profiles of persistent toxic substances in deep-sea ecosystems around Japan2010

    • Author(s)
      Takahashi, S.
    • Organizer
      SETAC Asia/Pacific
    • Place of Presentation
      Guangzhou, China
    • Year and Date
      2010-06-07
  • [Presentation] Biomagnification pattern of PBDEs and HBCDs in eastern and western boundary current ecosystems of the North Pacific Ocean2010

    • Author(s)
      Isobe, T.
    • Organizer
      5th International Symposium on Brominated Flame Retardants
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2010-04-07
  • [Book] 2. 4. 3.有機汚染物質の生物濃縮,環境毒性学,渡邉泉・久野勝治編2011

    • Author(s)
      高橋真
    • Total Pages
      57-63
    • Publisher
      朝倉書店

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Published: 2013-07-31  

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