STUDIES ON BOTTOM FAUNAL BIODIVERSITY OF SEWAGE FED AND TRADITIONAL PISCICULTURE PONDS OF WEST BENGAL, INDIASOMASREE DATTA AND ANILAVA KAVIRAJ
Physico-chemical parameters of water, sediment soil and bottom faunal biodiversity were evaluated in six pisciculture ponds, three of traditional type and three of sewage fed type. Physicochemical parameters of both water and sediment soil of these ponds varied between summer and monsoon. Altogether eleven invertebrate biota, including eight mollusca, two annelida and one arthropoda, were obtained from the bottom of the ponds, irrespective of types. There was a tendency of increase of molluscan population and decrease of annelid population in the sewage fed pond as compared to traditional pond.
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