Effect of different concentrations of filamentous algae, Oscillatoria spp. on growth and reproduction factors of marine rotifer Brachionus plicatilis

In recent years the use of rotifers as live food for rearing fish larvae and crustacean is very important. Rotifer has good characteristics such as size, nutritional value, slow swimming and these features are important in the development of early stage of aquatics. Growth and density are considered as important factors in the production of rotifers.
In this study, the effect of three different concentrations (1.5×106, 3×106, 4.5×106 cell/ml-1) of filamentous algae, Oscillatoria spp., on growth and reproduction of marine rotifer, Brachionus plicatilis was investigated. The rotifers were cultured in standard conditions in 500 ml plastic containers. The initial density of rotifers in different treatments was 30 ind/ml.
At the end of the fifth day, the highest density (453.66 ± 6.33) (M±SE) was seen in high concentration (4.5×106 cell.ml-1), which were significantly (PDiscussion and The present study showed that filamentus algae, Oscillatoria spp. can be used in culturing of marine rotifer and changing different concentrations can produce different density of rotifers.