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Environmental-medical and sanitary-zoological investigation on the land leech biohazard spreading at the southern area of Boso Peninsula.

Research Project

Project/Area Number 02670228
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Hygiene
Research InstitutionThe Jikei University School of Medicine

Principal Investigator

YOSHIBA Shigeo  The Jikei University School of Medicine, Professor, 医学部, 教授 (90056549)

Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1991: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1990: ¥800,000 (Direct Cost: ¥800,000)
Keywordsland leech / Haemadipsa zeylanica japonica, Whitman, 1886 / land leech biohazard / anti-land leech antibody / explosive propagation of land leech / immunological thinning out / ニホンヤナビル / ヤマビルの異常大発生
Research Abstract

1. As the result of continuous fixed point investigation on the land leech population, their active period prolonged toward mid winter, and several individuals of the leech were collected even in December and January and they spawned 3 egg masses.
2. As the causes of this explosive occurrence of the land leech, (1)appearance and wandering of deers in the town, (2)scarce existence of natural enemies of the land leech, and(3)weather condition in 1984 that was suitable for the leech propagation were listed.
3. As the natural enemies of the land leech, 4 species of insect were confirmed among 77 species of carnivorous animals tested, but they are hardly useful to practically exterminate the leech because of less chances to meet with the leeches.
4. Symptoms induced by bloodsucking of the leech are local bleeding (caused by prolonged bleeding time and loss of coagulation) lasting for about 1 hour, followed by itching and occasional induration, and the application with plaster and treatment wit … More h 1% tannic acid cotton are effectual.
5. Anti-land leech antibody was produced in the blood of bloodsucked humans and mammals and increased with the frequency of bloodsucking. This antibody lightens the local bleeding and kills the leech. These antibody values were detected even in cases affected more than 17 years ago by another subspecies of Haemadipsa.
6. It was proven that deers act as if the proper host of the land leech and carry several tens of the leeches on their extremities and that they have a kind of hollowed inflammatory tumors between the 3rd and the 4th toes, within the hollow of the tumors a leech enters.
7. The population of the land leech is controlled immmunologically by killing effect of the antibody.
8. Some ground walking birds will be safe carrier of the land leech because they are prefered by the leech but hardly produce anti-land leech antibody.
9. Hotwater extract of tobacco and nicotin sulfate are effectual for field extermination of the leech and salt powder or ashes of tobacco and mosquito coil are fitted to removal of the leech on the skin, and these substances are lethal to the leech. Less

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] 吉葉 繁雄: "千葉県天津小湊町に大発生しているニホンヤマビルの天敵の探索" 千葉大学理学部海洋生態系研究センタ-年報. 11(号). 61-70 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 石井 美恵子: "千葉県天津小湊町におけるニホンヤマビル異常発生前後の気象デ-タの統計的解析" 千葉大学理学部海洋生態系研究センタ-年報. 11(号). 71-74 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 吉葉 繁雄: "ニホンヤマビルの反復吸血により哺乳類に発現する抗体産生と免疫様現象" 日本衛生学雑誌. 46. 167 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 吉葉 繁雄: "ニホンヤマビル吸血被害者体内の抗ヤマビル抗体産生とヤマビルの宿主動物の再検討" 日本衛生学雑誌. 47. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 吉葉 繁雄: "ニホンヤマビルの吸血による抗ヤマビル抗体産生と抗体によるヤマビル生息密度の免疫学的制御" 千葉大学理学部海洋生態系研究センタ-年報. 12(号). (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 石井 美恵子: "ニホンヤマビルの駆除対策ー薬剤の有効性の実験" 千葉大学理学部海洋生態系研究センタ-年報. 12(号). (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shigeo Yashiba: "Natural enemies of the land leech, Haemadipsa zeylanica japonica, whitman, in Kominato, Chiba prefecture that explosively propagated in last five years." Japanese Journal of Hygiene. 45(1). 333 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shigeo Yoshiba: "Investigation on natural enemies of the land leech Haemadipsa zeylanica japonica Whitman, 1886, that explosively propagated in Amatsu-Kominato-machi, Chiba Prefecture." Annual Report of Marine Ecosystems Research Center Chiba University. (11). 61-70 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Mieko Ishii :"Statistical analysis for the meteorological data related with the rapid mass occurrence of the land leech, Haemadipsa zeylanica japonica, in Amatsu-Kominato-machi, Ciba Prefecture." Ann. Rep. Mar. Ecosystems Res. Ctr Chiba University. (11). 71-74 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shigeo Yoshiba :"Production of antibodies and "immunity"-like phenomena developed in mammals through repeated blood suckings by the land leech, Haemadipsa japonica Whiman." Jpn. J. Hyg.46(1). 167 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shigeo Yoshiba :"Anti-land leech antibody production in human and mammalian animals and its killing effect on land leech, Haemadipsa zeylanica japonica Whitman, 1886. -An immunological mechanism to control the population-" Ann Rep. Mar Ecosystems Res. Ctr. (12). (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Mieko Ishii :"Study on the exterminatory efficiency of same chemicals to the land leech, Haemadipsa zeylanica japonica" Ann. Rep. Mar. Ecosystems Res. Ctr. (12). (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shigeo Yoshiba: "Production of anti-land leech antibody in the bloodsucked victims and reinvestigation on host animals of the land leech, Haemadipsa zeylanica japonica Whitman, 1886." Jpn. J. Hyg.47(1). (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 吉葉 繁雄: "千葉県天津小湊町に大発生しているニホンヤマビルの天敵の探索" 千葉大学理学部海洋生態系研究センタ-年報. 11(号). 61-70 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 石井 美恵子: "千葉県天津小湊町におけるニホンヤマビル異常発生前後の気象デ-タの統計的解析" 千葉大学理学部海洋生態系研究センタ-年報. 11(号). 71-74 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 吉葉 繁雄: "ニホンヤマビルの反復吸血により哺乳類に発現する抗体産生と免疫様現象" 日本衛生学雑誌. 46. 167 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 吉葉 繁雄: "ニホンヤマビル吸血被害者体内の抗ヤマビル抗体産生とヤマビルの宿主動物の再検討" 日本衛生学雑誌. 47. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 吉葉 繁雄: "ニホンヤマビルの吸血による抗ヤマビル抗体産生と抗体によるヤマビル生息密度の免疫学的抑制" 千葉大学理学部海洋生態系研究センタ-年報. 12(号). (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 石井 美恵子: "ニホンヤマビルの駆除対策ー薬剤の有効性の実験" 千葉大学理学部海洋生態系研究センタ-年報. 12(号). (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 吉葉 繁雄: "千葉県天津小湊町に大発生しているニホンヤマビルの天敵の探索" 千葉大学理学部海洋生物環境解析施設年報. 10号. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 石井 美恵子,縣 俊彦,吉葉 繁雄: "千葉県天津小湊町におけるニホンヤマビル異常発生前後の気象デ-タの統計的解析" 千葉大学理学部海洋生物環境解析施設年報. 10号. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 吉葉 繁雄,石井 美恵子: "ニホンヤマビルの反覆吸血により哺乳類に発現する抗体産生と“免疫"様現象" 日本衛生学雑誌. 46. (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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