Brachionus calyciflorus Pallas as agent for the removal of E. coli in sewage ponds |
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Authors: | M T Seaman M Gophen B Z Cavari B Azoulay |
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Institution: | (1) Department of Zoology and Entomology, University of the Orange Free State, 9300 Bloemfontein, South Africa;(2) Kinneret Limnological Laboratory, POB 345, 14-102 Tiberias, Israel |
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Abstract: | Brachionus calyciflorus (Pallas) is a common brachionid in sewage oxidation ponds. The uptake and assimilation of E. coli was optimal at concentrations of 2.7–6.9 × 108 cells ml–1 while assimilation coefficient per body weight of B. calyciflorus was found to be 10% · Ind.–1 d–1. More than two eggs per individual were produced during 24 hours when brachionids were fed with a mixutre of E. coli (109 cells · ml–1) and Chlorella spp. (106 cells · ml–1). The nutritional value of the mixture of E. coli and Chlorella spp. was found to be higher than that of bacteria alone. |
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Keywords: | Brachionus calyciflorus feeding E coli Chlorella sewage ponds |
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