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Growth of Cyclotella meneghiniana Kutz. II. Growth and cell composition under different growth rates with different limitingnutrient

Published online by Cambridge University Press:  01 February 2009

H. M. Shafik ,
S. Herodek ,
M. Présing ,
L. Vörös  and
K. V. Balogh
H. M. Shafik
Affiliation:
Balaton Limnological Research Institute of the Hungarian Academy of Science, Tihany, Hungary Suez Canal University, Faculty of Science, Botany Department, Ismailia, Egypt
S. Herodek
Affiliation:
Balaton Limnological Research Institute of the Hungarian Academy of Science, Tihany, Hungary
M. Présing
Affiliation:
Balaton Limnological Research Institute of the Hungarian Academy of Science, Tihany, Hungary
L. Vörös
Affiliation:
Balaton Limnological Research Institute of the Hungarian Academy of Science, Tihany, Hungary
K. V. Balogh
Affiliation:
Balaton Limnological Research Institute of the Hungarian Academy of Science, Tihany, Hungary
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Abstract

The growth and cell composition of C. meneghiniana in P-, N- or Si-limited continuous cultures under different dilutions are discussed. Carbon, nitrogen and phosphorus content per cell or per unit cell volume increased with growth rate in all chemostats. Maximum growth rate depends on the type of limiting nutrient. The maximum growth rates are. 1.65 ± 0.04, 0.73 ± 0.07 and 0.95 ± 0.08 d-1 for P-, N- and Si-limited cultures respectively. These values are close to those calculated by Droop, Caperon, Goldman and Monod models. The concentrations of N and P in the river Danube are much higher than the requirements for growth and uptake of C. meneghiniana. This indicates that neither P nor N are limiting to the growth of C. meneghiniana in natural habitat.

Keywords

cyclotella meneghinianagrowthcell compositionlimiting nutrientcontinuous culturecyclotella meneghinianacroissancecomposition cellulairenutriment limitantculture en continu
Type
Research Article
Information
Annales de Limnologie - International Journal of Limnology , Volume 33 , Issue 4 , December 1997 , pp. 223 - 233
Copyright
© Université Paul Sabatier, 1997

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