Abstract
In the present study we examined the effect of food ration and individual density at the time of starting the harvesting stage, in determining the demographic parameters in a semicontinuous culture of the rotifers Brachionus plicatilis and B. rotundiformis fed freeze dried Nannochloropsis oculata. Three daily food rations (25, 50 and 100 mg 1-1) and three rotifer densities (250, 500 and 1000 rotifers ml-1) have been tested, in trying to maintain a constant availability of microalgal cells of 100 ng per individual. Results showed that with 10% daily dilution, the mean rotifer density during the steady state remained at values similar to those pre-fixed at the beginning of the harvesting. The production (rotifers 1-1 d-1) increased with the food ration, but the system efficiency (mg-rotifers produced per mg-microalgae) was the same irrespective of the ration.
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Navarro, N., Yúfera, M. (1998). Influence of the food ration and individual density on production efficiency of semicontinuous cultures of Brachionus-fed microalgae dry powder. In: Wurdak, E., Wallace, R., Segers, H. (eds) Rotifera VIII: A Comparative Approach. Developments in Hydrobiology, vol 134. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4782-8_62
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DOI: https://doi.org/10.1007/978-94-011-4782-8_62
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