In the present study rotifer Brachionus plicatilis was cultured under controlled laboratory conditions, in Marine Science Center, Dept. of Biology, temperature 22 ºC. The rotifers feeding on two type food, first baker's yeast and second animal manure. General, used manure better than yeast. density culture at ºC which fed 145 ind /ml, while growth rate 2.67 doubling time 0.25 day. While, densit...

In ecology, stable isotope labelling is commonly used for tracing material transfer in trophic interactions, nutrient budgets and biogeochemical processes. The main assumption in this approach is that the enrichment with a heavy isotope has no effect on the organism growth and metabolism. This assumption is, however, challenged by theoretical considerations and experimental studies on kinetic i...

Rotifers are usually considered to be useful indicators of water quality. Due to high population turnover rates, rotifers are particularly sensitive to changes in water quality. Their community structure not only allows estimates of the level of pollution, but also can indicate the trend of general conditions over time. This study was conducted by investigating rotifer species composition and d...