Vertical Migration And Spatial Distribution Of Zooplanktons In Two Different Ponds Of Barrackpore

INR : 500.00
USD : $ 10.00

Manasi Mukherjee Central Inland Fisheries Research Institute, Barrackpore, Kolkata Banani Mandal Aquaculture Research Unit, Department of Zoology, University of Calcutta, Kolkata

 

This is a study in two different ponds (Pond-1, Longitude: N 22.749780, Latitude: E 88.384000; Pond-2, Longitude: N 22.750640, Latitude: E 88.383750) located in Barrackpore, Kolkata on vertical migration and spatial distribution of Zooplankton. Both the ponds make a striking difference in all the three aspects viz. diversity, vertical migration and spatial distribution of Zooplankton. Pond-1 located just behind a hospital was utilized for various purposes like washing clothes and cattle, dumping of wastes etc., whereas Pond-2 located in midst of a settlement found lesser activities of such type.

The study included the collection of Zooplanktons from both the ponds at five different time intervals of a day (5 a.m., 10 a.m., 2 p.m., 6 p.m. and 10 p.m.) to find the diversity and migration of Zooplankton. Although the two ponds differ slightly in their physical parameters, their hydrological parameters viz. pH, transparency, hardness, Dissolved Oxygen, Dissolved Carbon di oxide etc. have huge difference, signifying varieties in their aquatic life.

Results showed that there is a reciprocal relationship of Rotifers with Copepods and Cladocerans, which may focus some light on the mechanism of reduction of interspecific competition. Result (Shannon Weaner index) also indicates that Pond-2 had high diversity of Zooplankton than Pond-1 suggesting Pond-2 as much more preferable for fish culture as compared to Pond-1.



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