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Turkish Journal of Fisheries and Aquatic Sciences 2008, Vol 8, Num, 2     (Pages: 275-282)

Growth Characteristics of the Monogonont Rotifer Asplanchna priodonta Gosse 1850 on Three Algae Species

Paul O. Ajah 1

1 University of Calabar, Institute of Oceanography, Calabar, Nigeria Viewed : 2367 - Downloaded : 3355 The monogonont rotifer Asplanchna priodonta, used in aquaculture as food for fish fry, was mass-produced in three 10 m3 outdoor concrete tanks over an average of 37 days each per batch using the algae Chlorella vulgaris, Eudorina elegans, and Scenedesmus quadricauda as food. In all three batches, the growth performance of A. priodonta fed on E. elegans was superior to that fed with either C. vulgaris or S. quadricauda. The intrinsic rates of natural increase and population doublings were better when fed on E. elegans and C. vulgaris. Highly significant (P<0.001) interactions were observed between A. priodonta and the three algae. Keywords : Zooplankton, rotifers, culture, phytoplankton, hatcheries