Morphological structure and functional patterns of Keratella cochlearis (Gosse) populations in stratified lakes

  • Galina A. Galkovskaya
  • Inessa F. Mityanina
Part of the Developments in Hydrobiology book series (DIHY, volume 52)


Vertical distribution of the rotifer Keratella cochlearis in stratified water columns of mesotrophic and eutrophic lakes during summer stagnation has been studied. Coexisting morphs K. cochlearis hispida (Lauterborn, 1898), K. c. tecta (Gosse, 1851) and K. c. cochlearis (Gosse, 1851) inhabit different layers in the water column and are vertically subdivided. The distribution of morph abundance and reproductive potential indicate that substitution of morphs within the vertical water column may be due to trophic conditions. The maximum population productivity is observed at the epi-metalimnion border. The maximum density zone lies below the zone of the highest productivity. The principle of ‘sliced functioning’ is used to explain the adaptive significance of the morphological structure of populations under heterogeneous environmental conditions.

Key words

Keratella cochlearis diurnal vertical distribution morphological structure population and energetic patterns 


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  1. Bosch, F. V. D. & J. Ringelberg, 1985. Seasonal succession and population dynamics of Keratella cochlearis (Gosse) and Kellicottia longispina (Kellicott) in lake Maarsseveen 1 (Netherlands). Arch. Hydrobiol. 103: 273–290.Google Scholar
  2. Carlin, B., 1943. Die planktonrotatorien des Motalastrom. Lund: Carl Bloms Bortryckeri, 255 pp.Google Scholar
  3. Djokosetiyanto, D. & N. Lair, 1983. Strategies d’utilisation des ressources dans un lac meso-oligotrophe: Migration verticales. Ann. Stat. biol. Besse- en Chandess. N 17: 65–91.Google Scholar
  4. Galkovskaya, G. A., 1984. Spatial distribution of planktonic rotifers and their trophic relations in lake ecosystems. V kn. Limnologia gornykh vodoemov. Yerevan: 54 (In Russian).Google Scholar
  5. Galkovskaya, G. A. & I. F. Mityanina, 1986. Birth rate characteristics of natural population of the rotifer Keratella cochlearis (Gosse). DAN BSSR 30: 568–570 (In Russian).Google Scholar
  6. Gallagher, J. J., 1957. Cyclomorphosis in the rotifer Keratella cochlearis (Gosse). Trans. am. micr. Soc. 76: 197–203.CrossRefGoogle Scholar
  7. Green, J., 1981. Altitude and seasonal polymorphism of Keratella cochlearis (Rotifera) in lakes of Auvergne, Central France. Biol. J. limnean Soc. 16: 55–61.CrossRefGoogle Scholar
  8. Hillbricht-Ilkowska, A., 1972. Morphological variation of the Keratella cochlearis (Gosse) (Rotatoria) in several Masurian lakes of different trophic level. Pol. Arch. Hydrobiol. 19: 253–264.Google Scholar
  9. Hillbricht-Ilkowska, A., E. Pieczynska & E. Pieczynski, 1971. Studies on the productivity of several Mazurian lakes and on the effect of fish on lake biocenosis. Wiadomosci ekologiczne 17: 124–146.Google Scholar
  10. Hofmann, W., 1980. On morphological variation in Keratella cochlearis population from Holstein lakes (Northern Germany). Hydrobiologia 73: 255–258.CrossRefGoogle Scholar
  11. Hofmann, W., 1983. On temporal variation in the rotifer Keratella cochlearis (Gosse): the question of ‘Lauterborn-cycles’. Hydrobiologia 101: 247–254.CrossRefGoogle Scholar
  12. Hofmann, W., 1987. Population dynamics of hypolimnetic rotifers in the Pluss-see (North Germany). Hydrobiologia 147: 197–201.CrossRefGoogle Scholar
  13. King, C. E., 1977. Genetics of reproduction, variation and adaptation in rotifers. Arch. Hydrobiol. 8: 187–201.Google Scholar
  14. King, C. E., 1980. The genetic structure of zooplankton populations. In W. C. Kerfoot (ed.), Evolution and Ecology of Zooplankton Communities. Special Sumposium 3. Univ. Press New England: 315–329.Google Scholar
  15. Kutikova, L. A., 1970. Rotifer fauna of the USSR. Fauna USSR 104. Akad. Nauk. SSR, Leningrad, 744 pp. (In Russian).Google Scholar
  16. Paloheimo, J. E., 1974. Calculation of instantaneous birth rate. Limnol. Oceanogr. 19: 692–694.Google Scholar
  17. Pejler, B., 1980. Variation in the genus Keratella. Hydrobiologia 73: 207–213.CrossRefGoogle Scholar
  18. Ruttner-Kolisko, A., 1949. Zum Formwechsel und Art-problem von Anuraea aculeata (Keratella quadrata). Hydrobiologia 1:425–468.CrossRefGoogle Scholar
  19. Snell, T., 1977. Clonal selection: Competition among clones. Arch. Hydrobiol. 8: 202–204.Google Scholar
  20. Yakushko, O. F., 1971. Byelorussian Poozerje. Historical development and present situation of lakes of Northern Byelorussia. Minsk, 336 pp. (In Russian).Google Scholar

Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • Galina A. Galkovskaya
    • 1
  • Inessa F. Mityanina
    • 1
  1. 1.Institute of ZoologyByelorussian Academy of SciencesMinskUSSR

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