Study on abundance and biodiversity of zooplankton communities in Warm Fishes pools of Mazandaran province

Knowing the zooplankton of any aquatic ecosystem is very effective in managing this ecosystem. This study was a research result in 1391 years. In this study, Zooplankton of four water pools located in Mazandaran province, with the geographical position of "12 ', 68 ° 36 north and" 76 ' 41 ° 53 in the east were studied. Each of the pools was in the area of 3 hectares and rectangular, each of which was mishdend from water wells and under one management. Sampling was sampled by a sampler with mesh size 55-micron, in July, August and September, every 15 days and then data was collected at the Laboratory for identification, counting and data. In the present study, six groups of zooplankton including 1 genus Copepoda, 9 genera Rotifera and 5 genera Protozoa, 1 Cladocera, 1 Mollusca and 2 Cirripedia genuses were identified. The highest percentage of zooplankton groups in hydrothermal pools was related to Protozoa (44%), which belonged to two genera Ciliata with a mean density of 8544.7 ± 7 (number per cubic meter) and Vorticella with a mean density of 5128.05 ± 05 Number in m 3), and since this group of zooplankton was not suitable for feeding, they were not fed to infants, resulting in better conditions for growth, and the rotifers had the most masses, of which Brachionus sp dominated that 65% of this genus is devoted to the relatively good conditions for feeding fish in these pools.