, Volume 144, Issue 3, pp 251–259

Evaluation of Microcystis as food for zooplankton in a eutrophic lake

  • Takayuki Hanazato
  • Masayuki Yasuno


Four experiments were conducted to evaluate Microcystis as food for zooplankton in Lake Kasumigaura, and the following results were obtained. (1) Moina micrura (Cladocera) showed little growth and no reproduction when the animal was reared with Microcystis cultured in the laboratory. The animal did not grow nor reproduce well when Chlorella was mixed with Microcystis as food. (2) Moina micrura assimilated Microcystis much less than Chlorella when the animal fed on single species of Microcystis or a mixture with Chlorella. (3) Microcystis collected from Lake Kasumigaura could not be utilized by Moina micrura even though the colonies were broken up into edible sizes. However, the alga turned into utilizable food when it was decomposed. (4) No inhibitors of Moina micrura population growth could be found in the non-filtered water of Lake Kasumigaura where Microcystis was blooming heavily. Decomposed Microcystis seemed to be utilized by zooplankton as an important food source in Lake Kasumigaura.


Microcystis food for zooplankton Moina micrura Lake Kasumigaura 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Arnold, D. E., 1971. Ingestion, assimilation, survival, and reproduction by Daphnia pulex fed seven species of bluegreen-algae. Limnol. Oceanogr. 16: 906–920.Google Scholar
  2. DeBernardi, R., G. Giussani & E. L. Pedretti, 1981. The significance of blue-green algae as food for filter-feeding zooplankton: experimental studies on Daphnia spp. fed by Microcystis aeruginosa. Verh. int. Ver. Limnol. 21: 477–483.Google Scholar
  3. Dumont, H. J., 1977. Biotic factors in the population dynamics of rotifers. Arch. Hydrobiol. Beih. 8: 98–122.Google Scholar
  4. George, D. G. & R. W. Edwards, 1974. Population dynamics and production of Daphnia hyalina in a eutrophic reservoir. Freshwat. Biol. 4: 445–465.Google Scholar
  5. Hanazato, T. & M. Yasuno, 1984. Growth, reproduction and assimilation of Moina macrocopa fed on Microcystis and/or Chlorella. Jap. J. Ecol. 34: 195–202.Google Scholar
  6. Hanazato, T. & M. Yasuno, 1985a. Population dynamics and production of cladoceran zooplankton in the highly eutrophic Lake Kasumigaura. Hydrobiologia 124: 13–22.CrossRefGoogle Scholar
  7. Hanazato, T. & M. Yasuno, 1985b. Occurrence of Daphnia ambigua Scourfield in Lake Kasumigaura. Jap. J. Limnol. 46: 212–214.Google Scholar
  8. Jones, H. R., T. J. Lack & C. S. Jones, 1979. Population dynamics and production of Daphnia hyalina var. lacustris in Farmoor I, a shallow eutrophic reservoir. J. Plankton Res. 1: 45–65.Google Scholar
  9. Lampert, W., 1977a. Studies on the carbon balance of Daphnia pulex as related to environmental conditions, 1. Methodological problems of the use of 14C for the measurement of carbon assimilation. Arch. Hydrobiol., Suppl. 48: 287–309.Google Scholar
  10. Lampert, W., 1977b. Studies on the carbon balance of Daphnia pulex De Geer as related to environmental conditions, 2. The dependence of carbon assimilation on animal size, temperature, food concentration and diet species. Arch. Hydrobiol., Suppl. 48: 310–335.Google Scholar
  11. Lampert, W., 1981a. Inhibitory and toxic effects of blue-green algae on Daphnia. Int. Revue ges. Hydrobiol. 66: 285–298.Google Scholar
  12. Lampert, W., 1981b. Toxicity of the blue-green Microcystis aeruginosa: effective defence mechanism against grazing pressure by Daphnia. Verh. int. Ver. Limnol. 21: 1436–1440.Google Scholar
  13. Lampert, W., 1982. Further studies on the inhibitory effect of the toxic blue-green Microcystis aeruginosa on the filtering rate of zooplankton. Arch. Hydrobiol. 95: 207–220.Google Scholar
  14. Otsuki, A., Y. Ito & T. Fujii, 1983. Simultaneous measurements and determinations of stable carbon and nitrogen isotope ratios, and organic carbon and nitrogen contents in biological samples by coupling of a small quadrapole mass spectrometer and modified carbon-nitrogen elemental analyzer. Int. J. Mass spectrom. Ion Phys. 48:343–346.Google Scholar
  15. Pavlyutin, A. P., 1976. Food value of detritus for certain freshwater cladoceran species. Hydrobiol. J. 12: 7–12.Google Scholar
  16. Schindler, D. W., 1968. Feeding, assimilation and respiration rates of Daphnia magna under various environmental conditions and their relation to production estimates. J. anim. Ecol. 37: 369–385.Google Scholar
  17. Schoenberg, S. A., & R. E. Carlson, 1984. Direct and indirect effects of zooplankton grazing on phytoplankton in a hypereutrophic lake. Oikos 42: 291–302.Google Scholar
  18. Stangenberg, M., 1968. Toxic effects of Microcystis aeruginosa Kg. extracts on Daphnia longispina O. F. Müller and Eucypris virens Jurine. Hydrobiologia 32: 81–87.Google Scholar
  19. Straskraba, M., 1966. Interrelations between zooplankton and phytoplankton in the reservoirs Slapy and Klicava. Verh. int. Ver. Limnol. 16: 719–726.Google Scholar
  20. Takamura, N., T. Iwakuma & M. Yasuno, 1985. Photosynthesis and primary production of Microcystis aeruginosa Kutz. in Lake Kasumigaura. J. Plankton Res. 7: 303–312.Google Scholar
  21. Takamura, N., T. Iwakuma & M. Yasuno, 1986. Photosynthesis of size-fractionated phytoplankton population in hypertrophic Lake Kasumigaura, Japan. Arch. Hydrobiol., in press.Google Scholar
  22. Thompson, J. M., A. J. D. Ferguson & C. S. Reynolds, 1982. Natural filtration rates of zooplankton in a closed system: the derivation of a community grazing index. J. Plankton Res. 4: 545–560.Google Scholar
  23. UNESCO/SCOR, 1966. Determination of photosynthetic pigments in seawater. UNESCO, Paris, 69 pp.Google Scholar
  24. Watanabe, A., 1960. List of algal strains in collection at the Institute of Applied Microbiology, University of Tokyo. J. Gen. Appl. Microbiol. 6: 238–292.Google Scholar

Copyright information

© Dr W. Junk Publishers 1987

Authors and Affiliations

  • Takayuki Hanazato
    • 1
  • Masayuki Yasuno
    • 1
  1. 1.Division of Environmental BiologyNational Institute for Environmental StudiesIbarakiJapan

Personalised recommendations