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Reconstruction of the past plankton community in Lake Biwa using Daphnia resting eggs

Research Project

Project/Area Number 12440218
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 生態
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

URABE Jotaro  Center for Ecological Research, Kyoto Univ. Associate Prof., 生態学研究センター, 助教授 (50250163)

Co-Investigator(Kenkyū-buntansha) KASHIWAYA Kenji  Faculty of Sci., Kanazawa Univ, Prof., 理学部, 教授 (30161029)
NARITA Tetsuya  Center for Ecological Research, Kyoto Univ. Assist. Prof., 生態学研究センター, 助手 (40025440)
SHIMIZU Isamu  Center for Ecological Research, Kyoto Univ. Prof., 生態学研究センター, 教授 (80025486)
KAWABATA Keiichi  Faculty of Education., Kanazawa Univ. Associate Prof., 教育学部, 助教授 (40211867)
Project Period (FY) 2000 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥15,700,000 (Direct Cost: ¥15,700,000)
Fiscal Year 2002: ¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2001: ¥5,900,000 (Direct Cost: ¥5,900,000)
Fiscal Year 2000: ¥6,200,000 (Direct Cost: ¥6,200,000)
KeywordsLake Biwa / Zooplankton / DNA / Species Compsition / lake bottom / resting eggs / Sediments / Daphnia / 推積物
Research Abstract

To clarify changes in the plankton community for the past 100 years in lake Biwa, we performed paleolimnological analyses on cladoceran remains and genetic analyses on daphnia resting eggs in die lake sediments. Dating of the lake sediments was determined using 137Cs and 210Pb. For genetic analyses, we developed a new method to extract DNA efficiently from the resting eggs of Daphnia species. Identification of Daphnia species was then made based on sequences of mt DNA 12S rRNA and nuclear DNA-ITS regions with PCR-RFLP method.
The results revealed historical changes in the zooplankton community. Before 1900, D. mendotae which have been thought as endemic species in Norm America were abundantly occurred and sole Hyalodaphnia species in this lake. After 1990, however, D. galeata was occurred and produced hybrids with D. mendotae. Thus, at present, Hyalodaphnia populations in Lake Biwa compose of D. mendotae, D. galeata and their hybrid. Detailed analysis of the present population showed th … More at D. mendotae were most dominant Hyalodaphnia species and that existence balance of these species (and hybrid) deviated from the Hardy-Weinberg equilibrium, suggesting that D. mendotae and D. galeata are isolated as single species within the lake. Other than these species, D. pulicaria occurred suddenly and abundantly in 1999. Genetic analyses showed that this population is genetically most close to those in lakes at west coast of North America, suggesting that D. pulicaria occurred in Lake Biwa is a recent invader from North America.
Paleolimnological analyses on cladoceran remains further revealed that population density of Daphnia species (mainly D. mendotae) has increased, they did not produce resting eggs for the last 20 years. Experimental analysis indicates mat this decrease in resting egg production is not due to changes in water quality. Since Daphnia became to appear abundantly even in winter since 1980, this decrease in resting egg production seems to be due to a results of natural selection caused by changes in food and water temperature regimes in winter. These results suggest that the zooplankton community in Lake Biwa has largely changed for the past 100 years and has received frequently various type of environmental disturbances including eutroophication, species invasions and shift in water temperature regimes. Less

Report

(4 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] J.Urabe: "Contrasting effects of different types of resource depletion on life history traits in Daphnia"Functional Ecology. 15. 165-174 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] C.Yoshimizu: "Roles of Daphnia in decomposition of organic matters in the Surface layer of Lake Biwa"Lakes & Reservoirs. 7. 325-330 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Ishikawa: "Population dynamics and production of Jesogammarus annandale ; an endemic amphipod, in Lake Biwa"Freshwater Biology. 47. 1935-1943 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] J.Urabe: "Food quality determinants for Daphnia growth in P-limited lakes"Verh. Internat. Verein. Limnol. 28. 1089-1094 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] J.Urabe: "Facilitation among herbivore animals can mitigate environmental mismatch of energy and material supplies"Ecology Letters. 5. 177-185 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] J.Urabe: "Daphnia palicaria ; a Zooplankton species that suddenly appeared in 1999 in the offshore zone of Lake Biwa"Limnology. 4・(1)(印刷中). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Urabe, J. and R. W. Sterner: "Contrasting effects of different type of resource depletion on life history traits in Daphnia"Functional Ecology. 15. 165-174 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Urabe, J., J. J. Elser, M. Kyle, T. Sekino and Z. Kawabata: "Facilitation among herbivorous animals can mitigate environmental mismatch of energy and material supplies"Ecology Letters. 5. 177-185 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Makino, W., J. Urabe, J. J. Elser and C. Yoshimizu: "Evidence of phosphorus-limited individual and population growth of Daphnia in a Canadian Shield lake"Oikos. 96. 197-205 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Yoshimizu, C. and J. Urabe: "Roles of Daphnia in decomposition of organic matters in the surface layer of Lake Biwa"Lakes and Reservoirs. 7. 325-330 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Yshikawa, T. and J. Urabe: "Population dynamics and production of Jesogammarus annandalei, an endemic amphipod, in Lake Biwa Japan"Freshwater Biology. 47. 1935-1943 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Urabe, J., W. Makino, K. Hayakawa and J. J. Elser: "Food quality determintants for Daphnia growth in P-limited lakes"Verh. Internal Verein. Limnol. 28. 1089-1094 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Urabe, I., S. Ishida, M. Nishmoto and L. J. Welder: "Daphnia pulicaria; a zooplankton spfecies that suddenly appeared in 1999 in the offshore zone of Lake Biwa"Limnology. in press. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Ishikawa: "Population dynamics and production of Jesogammarus annandalei, an endemic amphipod, in Lake Biwa"Freshwater Biology. 47. 1935-1943 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] C.Yoshimizu: "Roles of Daphnia in decomposition of organic matters in the surface layer of Lake Biwa"Lakes & Reservoirs. 7. 325-330 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] J.Urabe: "Food quality determinants for Daphnia growth in P-limited lakes"Verh. Internat. Verein. Limnol.. 28. 1089-1094 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] J.Urabe: "Facilitation among herbivorous animals can mitigate environmental mismatch of energy and material supplies"Ecology Letters. 5. 177-185 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] J.Urabe: "Daphnia pulicaria ; a zooplankton species that suddenly appeared in 1999 in the offshore zone of Lake Biwa"Limnology. 4(1)(印刷中). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Yoshida: "Contrasting effects of a cladoieran (Daphnia) and a calanoidacopepod on algal and microbial plankton in Lake Biwa"Oecologia. 129. 602-610 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] J.Urabe: "Contrasting effects of different types of resource depletion on life history traits in Daphnia"Functional Ecology. 15. 165-174 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] W.Makino: "Evidence of Phosphorus-limited individual and population growth of Daphnia in a Canadian Shield lake"Oikos. 96. 197-205 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Yoshida: "Seasonal Succession of Zooplankton in the north Basin of Lake Biwa"Aguatic Ecology. 35(in press). (2001)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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