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Geographic variation of diapause and life cycles of Locusta migratoria in China.

Research Project

Project/Area Number 17580048
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied entomology
Research InstitutionNational Institute of Agrobiological Sciences

Principal Investigator

TANAKA Seiji  National Institute of Agrobiological Sciences, Insect Interaction Research Unit., senior researcher (50370664)

Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2006: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2005: ¥2,200,000 (Direct Cost: ¥2,200,000)
KeywordsLocusta misratoria / Phase polyphenism / Outbreak / embryonic diapause / China / geographic variation / cold hardiness / body size / 相変異 / 国際研究者交換 / 昆虫学
Research Abstract

To investigate geographic adaptation of the migratory locust Locusta migratoria in China, locusts were collected in six localities ranging from 47.4°N to 19.2°N. Using offspring from the various populations, we compared embryonic diapause, reproductive traits, cold hardiness and adult body size. The incidence of embryonic diapause was influenced by the genetic makeup, parental photoperiod, and incubation temperature of the eggs. The northern strain (47.4°N) produced diapause eggs under all photoperiodic conditions, whereas the other strains produced a higher proportion of diapause eggs when exposed to a short photoperiod. The incubation temperature greatly influenced diapause induction. At low temperature, eggs entered diapause even in a tropical strain (19.2°N) in which no diapause was induced at high temperatures. Diapause intensity decreased with decreasing original latitude. Cold hardiness was compared by exposing eggs in diapause to either-10 or-20℃ for various periods; the northern strain was more cold hardy than the southern strain, although some eggs in the tropical strain probably were not in a state of diapause. Adult body size and head width showed a complicated pattern of variation along the latitudinal gradient, whereas egg pod size (egg pod width and egg number) and hatchling weight tended to decrease with decreasing latitude. These results reveal that L. migratoria has adapted to local environments and that the latitudinal gradient appears to play an important role in shaping the L. migratoria life cycle and development.

Report

(3 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • Research Products

    (13 results)

All 2007 2006 2005 Other

All Journal Article (7 results) (of which Peer Reviewed: 2 results) Presentation (3 results) Book (2 results) Remarks (1 results)

  • [Journal Article] (Co-author) Invitation to African Entomology2007

    • Author(s)
      Tanaka, S.
    • Journal Title

      Kyoto University Press

      Pages: 99-113

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Corazonin and locust phase polyphenism2006

    • Author(s)
      田中 誠二
    • Journal Title

      Applied Entomology and Zoology 41

      Pages: 179-193

    • NAID

      110004749459

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Corazonin and locust phase polyphenism.2006

    • Author(s)
      田中誠二
    • Journal Title

      Applied Entomology and Zoology 41

      Pages: 179-193

    • NAID

      110004749459

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Outbreaks of the migratory locust Locusta migratoria(Orthoptera:Acrididae)and control in China2005

    • Author(s)
      田中 誠二, 朱 道弘
    • Journal Title

      Applied Entomology and Zoology 41

      Pages: 257-263

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Hormonal control of phase polyphenism in locusts2005

    • Author(s)
      田中誠二
    • Journal Title

      Formosan Entomologist 25

      Pages: 131-143

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Outbreaks of the migratory locust Locusta migratoria(Orthoptera : Acrididae) and control in China.

    • Author(s)
      Tanaka, S., Zhu, D.-H.
    • Journal Title

      pplied Entomology and Zoology 40

      Pages: 257-263

    • NAID

      10015668159

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] (2006) Corazonin and locust phase polyphenism

    • Author(s)
      Tanaka, S.
    • Journal Title

      Applied Entomology and Zoology 41

      Pages: 179-193

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Presentation] Seasonal adaptation of Locusta migratoria in China : Geographic variation.2007

    • Author(s)
      Tanaka, S. Zhu, D.-H.
    • Organizer
      Annual Conference of the Entomolgocal Society of Japan
    • Year and Date
      2007-05-19
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Presentation] 中国大陸のトノサマバッタの季節適応:休眠と日本個体群との遺伝的親和性2005

    • Author(s)
      田中 誠二, 朱 道弘
    • Organizer
      日本昆虫学会大会
    • Place of Presentation
      岡山大学教育開発センター
    • Year and Date
      2005-09-23
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Presentation] Seasonal adaptation of Locusta migratoria in China : Genetic compatibility with Japanese locusts.2005

    • Author(s)
      Tanaka, S. Zhu, D.-H.
    • Organizer
      Annual Conference of the Entomolgocal Society of Japan
    • Year and Date
      2005-09-23
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Book] アフリカ昆虫学への招待(第7章大発生するバッタと相変異共著pp, 99・113)2007

    • Author(s)
      田中 誠二(共著)
    • Total Pages
      286
    • Publisher
      京都大学学術出版会
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Book] アフリカ昆虫学への招待2007

    • Author(s)
      田中誠二(分筆)日高敏隆(監修)
    • Publisher
      京都大学出版
    • Related Report
      2006 Annual Research Report
  • [Remarks] 「研究成果報告書概要(和文)」より

    • Related Report
      2006 Final Research Report Summary

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Published: 2005-04-01   Modified: 2016-04-21  

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