Continuous culture of the rotifer Brachionus plicatilis fed recycled algal diets
A culture system for the rotifer Brachionus plicatilis was designed to maintain higher food conversion rates and stable population densities. Two 2001 plastic tanks were employed in the culture experiments, tank A for ‘feedback’ culture and tank B for a control culture. The experiments were carried out for 70 days at 24°C, light intensity, 1500 lux, and a photoperiod of L:D 15:9. B. plicatilis were fed once a day on baker’s yeast and Chlorella.
Food conversion rates in tanks A and B were 24.7% and 10.1%, respectively. Population density of B. plicatilis in tank A was consistently stable at 100–150 ind. Ml−1 throughout the culture period. Density in tank B, however, showed large fluctuations after 40 or 50 days and by the end of the experiment, declined to zero.
Keywordsrotifers recycle culture-ecosystem Brachionus
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- Endo, K. & Mochizuki, T., 1979. Relation between specific growth rate of rotifer Brachionus plicatilis and concentration of food, marine species of Chlorella. J. Ferment. Technol. Osaka 57: 4.Google Scholar
- Fukusho, K., Hara, O. & Yoshio, J., 1976. Mass culture of rotifer Brachionus plicatilis fed on mixture diet of marine Chlorella and yeast in large tank. Suisanzoshoku 24: 96–101 (in Japanese).Google Scholar
- Furukawa, I. & Hidaka, K., 1973. Technological problems on the mass culture of rotifer Brachionus plicatilis. Bull. Plankton Soc. Japan 20: 61–71 (in Japanese).Google Scholar
- Hirata, H. & Mori, Y., 1967. Cultivation of rotifer Brachionus plicatilis fed on mixed diet of marine Chlorella and baker’s yeast. Saibai-Gyogyo 5: 36–40 (in Japanese).Google Scholar
- Hirata, H. & Yamasaki, S., 1980. Steady state Zooplankton community in a feedback culture system. Microcosms ecol. Res., Doe Symp. Ser. 52: 402–415.Google Scholar
- Hirayama, K.,Takagi, K. & Kimura, H., 1979. Nutritional effect of eight species of marine phytoplankton on growth of the rotifer Brachionus plicatilis. Bull. jap. Soc. Scient. Fish. 45: 11–16.Google Scholar
- Kubota, T., 1977. Aquaculture farms, Coastal aquaculture and self-pollution. Jap. Soc. Scient. Fish., Koseisha-Koseikaku, 134 pp. (in Japanese).Google Scholar
- Mochizuki, T., Shimizu, H., Tanaka, M. & Endo, K., 1978. Studies on the cultivation of Zooplankton. Suisanzoshoku 25: 142–144 (in Japanese).Google Scholar
- Seto Inland Sea Farming Fisheries Association, 1964. Cultivation of live food organisms in the Yashima Station. Saibai-Gyogyo Newlett. 2: 4.Google Scholar