Abstract
Plankton is most essential for many fishes as food. The growth of plankton feeding fishes mostly depends on plankton dynamics of the water body.In the complex chain of community metabolism, the different trophic strata, and a fraction of which ends up as fish flesh. Therefore, structure of different fish food biotic communities assumes greater significance to reservoir fish management. Ambadi reservoir in Kinwat Taluka of Nanded District of Maharashtra. represents 17 species of zooplankton.These include 6 species of rotifera, 4 species of copepoda, 6 species of cladocera and 1 species of ostracoda.
Highlights
The zooplankton forms an important group as it occupies an intermediate position in the food web, many of them feeding on algae and bacteria and in turn being fed up on by fishes
Standard key and other literature was used for identification of different species for estimating seasonal population density studies, 10 buckets (100 L) of surface was poured through the plankton net and simultaneous samples by towing the plankton net through surface water were collected for diversity studies using Sedgwick Rafter Cell did the enumeration and lackeys drop method by taking 1 ml approximately diluted sample.[1,2,3,6,8]
Brachionus, Hexartha, Epiphanus, Rotaria,and Filina .The maxima of Rotifera genera was observed in monsoon period (1573 organisms/ litre) this indicated that the greater occurrence of loricate forms was related to the monsoon period with moderate temperature .The similar reports were given by Kumar et al,(1978)[5].Copepoda was the second dominant group among the zooplankton in the reservoir
Summary
The zooplankton forms an important group as it occupies an intermediate position in the food web, many of them feeding on algae and bacteria and in turn being fed up on by fishes. They are sensitive to pollution and many species are recognized as indicators of pollution.Fish production in a water body are directly or indirectly dependent on the abundance of plankton. During the study of plankton, a link in the food chain is a prerequisite to understand the capacity of the water body to support the fisheries.
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