Studies on rotifer ecology of Lake Mansar (Ramsar site), Jammu, J&K
D. Slathia and Sheetu Dhar
Department of Environmental Sciences, University of Jammu, Jammu J&K
Abstract
Rotifers represent microscopic zooplankton fauna, occurring prevalently in freshwater. In the present study, monthly qualitative and quantitative analysis of phylum Rotifera was carried out in lake Mansar, Jammu, during the year 2011-2012 and has been described. The study revealed the presence of fifteen species belonging to two classes viz. Monogononta and Bdelliodea. Qualitatively, Class Monogononta was represented by fourteen species belonging to four families namely Lecanidae, Colurinae, Brachionidae and Notommatidae and Class Bdelliodea by one species belonging to family Philodinidae. The annual average density of the rotifers in the lake varied between 109n/l (January) and 709n/l (March), respectively. Seasonally, class Monogononta observed bimodal peaks viz. March and August with highest and lowest observation in the months of August and January, respectively. Class Bdelloidea showed its presence only during December, March and May with complete absence in rest of the months. The analysis of coefficient of correlation (r) of rotifers with various physicochemical parameters of water has shown strong significant correlation with dissolved oxygen and carbonate. Also, linear regression equations developed for rotifer and water quality parameters which have significant influence on each other (r > .701 at 0.05 significance level; two tailed and n = 12) have confirmed significant correlation between rotifer and DO.
Coefficient of correlation, Mansar Lake, physicochemical parameters, Ramsar site, Rotifera, zooplankton
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© ASEA
Received: 02.07.2014
Revised: 11.10.2014
Accepted: 14.12.2014
First Online: 12.06. 2015
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