Biometric analysis of Brachionus plicatilis ecotypes from Spanish lagoons

  • M. Serra
  • M. R. Miracle
Part of the Developments in Hydrobiology book series (DIHY, volume 14)


Univariate comparisons and several multivariate statistical analyses have been performed to study the morphometric variability of B. plicatilis. Both laboratory clones kept under constant conditions and natural populations from different Spanish lagoons and different times of the year have been compared. The results show that not only size, but also allometric coefficients are influenced by environmental factors. However, an important genetic component in the variation of shape and size has been visualized. A clear North-South ordination of the populations of the different lagoons and an important dispersion between their summer populations as well as great differences due to seasonal variation became apparent by the multivariate statistical analysis used.


rotifers Brachionus plicatilis biometry ecotypes cyclomorphosis 


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  1. Blackith, R. E. & Reyment, R. A., 1971. Multivariate morphometries. Academic Press, London. 412 pp.Google Scholar
  2. Gould, S. J., 1966. Allometry and size in Ontogeny and Phytogeny. Biol. Rev. 41: 587–640.PubMedCrossRefGoogle Scholar
  3. Green, J., 1980. Asymmetry and variation in Keratell a tropica. Hydrobiologia 73: 241–248.CrossRefGoogle Scholar
  4. Guillard, R. R. L. & Ryther, J. H. 1962. Studies of marine planktonic Diatoms. I. Cyclotella nana Hustedtand Detonula confervacea (Cleve) Gran. Can. J. Microbiol. 8: 229–239.PubMedCrossRefGoogle Scholar
  5. Hirayama, K. & Kusano, T., 1972. Fundamental studies on the physiology of Rotifers for their mass culture. A influence of water temperature on population growth of Rotifer. Bull. Jap. Soc. Sci. Fish. 38: 1357–1363.Google Scholar
  6. Ito, T., 1953. Studies on the morphological variation in natural populations of Calanoide Copepoda of Japanese Island waters. Fac. Fish. Univ. Mie. 1: 273–400.Google Scholar
  7. Jolicoeur, P. & Mossiman, J. E., 1960. Size and shape variation in the painted turtle. A principal components analysis. Growth 24: 339–354.PubMedGoogle Scholar
  8. Kerfoot, W. C., 1980. Perspectives on Cyclomorphosis. Separation of phenotypes and genotypes. In: Evolution and Ecology of Zooplankton Communities. W. C. Kerfoot (Ed.) Univ. Pr. New England: 470–496.Google Scholar
  9. King, Ch. K. & Miracle, M. R., 1980. A perspective on aging in Rotifers. Hydrobiologia 73: 13–19.CrossRefGoogle Scholar
  10. Lindström, K. & Pejler, B., 1975. Experimental studies on the seasonal variation of the Rotifer Keratella cochlearis (Gosse). Hydrobiologia 46: 191–197.CrossRefGoogle Scholar
  11. Moulton, T. P., 1973. Principal Components Analysis of variation in form within Oncaea conifera, a species of Copepoda (Crustacea). Systematic Zoology 22: 141–156.CrossRefGoogle Scholar
  12. Nie, N., Bent, D. H. & Hull, C. H., 1970. Statistical package for the social sciences. McGraw-Hill, New York. 343 pp.Google Scholar
  13. Riera, T., 1981. Variabilitat morfologica de Tropocyclops i Temora. Aproximado critica a l’ús generalitzat de la Biometria en la taxonomia de Copépodes. Ph. D. Thesis, Univ. of Barcelona.Google Scholar
  14. Seal, H. L., 1964. Multivariate statistical analysis for biologists. 1964. Methuen London. 207 pp.Google Scholar
  15. Yúfera, M., 1982. Morphometric characterization of a small-sized strain of Brachionus plicatilis in culture. Aquaculture 27: 55–61.CrossRefGoogle Scholar

Copyright information

© Dr W. Junk Publishers, The Hague 1983

Authors and Affiliations

  • M. Serra
    • 1
  • M. R. Miracle
    • 1
  1. 1.Departamento Ecologia, Fac. Ciencias BiológicasUniversidad de ValenciaValenciaSpain

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