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Hydrobiologia

, Volume 186, Issue 1, pp 355–361 | Cite as

A new method to estimate individual dry weights of rotifers

  • Hans Rainer Pauli
Article

Abstract

Body and egg volumes of 12 rotifer species of Lake Constance were calculated from more than 18 000 individually measured animals using geometric approximations. Body (VA) and egg (VE) volumes of various rotifer species have an allometric relationship described by: VE = 1272 · VA0.3379, while the relation VE/VA for each species was constant ranging from 0.016 to 0.87. Dry weight of adult rotifers was assumed to be the sum of the egg dry weight plus a corrected weight increment from egg to adult. It was estimated with the formula WA = WE · (1 + a · FA/FE) where (a) was varied between 0 and 0.1. Egg dry weight content was assumed to be 35 % of fresh weight. The estimates of dry weight to wet weight ratios ranged from 0.57 % (Asplanchna priodonta) to 29.4 % (Kellicottia longispina). Dry weight estimates obtained with this method are comparable to those obtained with direct measurements of dry weight or carbon content.

Key words

rotifers dry weight biomass productivity 

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References

  1. Aasa, R., 1979. Plankton i Lilla Ullevifjärden. Nat. Swedish Envir. Prot. Bd, Limnol. Surv. Uppsala, Rep. 33: 1–62.Google Scholar
  2. Bikar, K., 1986. Dauer der Eientwicklung von Planktoncrustaceen des Überlingersees (Bodensee) in Abhängigkeit von der Saisonalen Variation der Umgebungstemperatur, der Adultgröße and des Eigewichtes. Diplomarbeit, Universität Freiburg (W-Germany).Google Scholar
  3. Bottrell, H. H., A. Duncan, Z. M. Gliwicz, E. Grygierek, A. Herzig, A. Hillbricht-Ilkowska, H. Kurasawa, P. Larsson & T. Weglenska, 1976. A review of some problems in zooplankton production studies. Norw. J. Zool. 24: 419–456.Google Scholar
  4. Doohan, M. & V. Rainbow, 1971. Determination of dry weights of small Aschelminthes (<.1 µg). Oecologia (Berl.) 6: 380–383.Google Scholar
  5. Downing, J. A. & F. H. Rigler, 1984. A manual on Methods for the Assessment of Secondary Productivity in Fresh Waters, 2., Blackwell Scientific Publications, Oxford, 501 pp.Google Scholar
  6. Dumont, H. J., I. Van de Velde & S. Dumont, 1975. The dry weight estimate of biomass in a selection of Cladocera, Copepoda, and Rotifera from the plankton, periphyton, and benthos of continental waters. Oecologia (Berl.) 19: 75–97.Google Scholar
  7. Haney, J. F. & D. J. Hall, 1973. Sugar-coated Daphnia: A preservation technique for Cladocera. Limnol. Oceanogr. 18: 322–333.Google Scholar
  8. Koste, W., 1978. Rotatoria. Die Rädertiere Mitteleuropas. 1. Textband. Gebrüder Bornträger, Berlin, Stuttgart, 673 pp.Google Scholar
  9. Koste, W., 1978. Rotatoria. Die Rädertiere Mitteleuropas. 2. Tafelband. Gebrüder Bornträger, Berlin, Stuttgart, 234 Tafeln.Google Scholar
  10. Latja, R. & K. Salonen, 1978. Carbon analysis for the determination of individual biomasses of planktonic animals. Verb. int. Ver. Limnol. 20: 2556–2560.Google Scholar
  11. Naulapää, A., 1966. Eräiden Suomessa esiintyvien planktereiden tilavuuksien keskiarvoja [Mean volumes for some plankters found in Finland]. Vesiensuojelutoimiston tiedonantoja 21: 1–26.Google Scholar
  12. Peters, R. H., 1983. The ecological implications of body size. Cambridge University Press, Cambridge, England.Google Scholar
  13. Ruttner-Kolisko, A., 1972. Rotatoria. In: Elster, H.-J. & W. Ohle (eds.), Die Binnengewässer. Bd. 26. Das Zooplankton der Binnengewässer. 1. Teil. Schweizer-bart'sche Verlagsbuchhandlung, Stuttgart: 99–234.Google Scholar
  14. Ruttner-Kolisko, A., 1977. Suggestions for biomass calculation of planktonic rotifers. Arch. Hydrobiol. Beih./Ergebn. Limnol. 8: 71–76.Google Scholar
  15. Salonen, K. & R. Latja, 1988. Variation in the carbon content of two Asplanchna species. Hydrobiologia 162: 79–87.Google Scholar
  16. Schmidt-Nielsen, K., 1984. Scaling: Why is animal size important? Cambridge University Press.Google Scholar
  17. Utermöhl, H., 1958. Zur Vervollkommnung der quantitativen Phytoplankton-Methodik. Mitt. int. Ver. Limnol. 9: 1–38.Google Scholar
  18. Walz, N., 1987. Stoffumsatz und Kinetik von Regulationsprozessen bei Zooplankton-Populationen. Habilitationsschrift, Universität München, W-Germany, 225 pp.Google Scholar

Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • Hans Rainer Pauli
    • 1
  1. 1.Limnologisches InstitutUniversität KonstanzFRG

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