2017 Vol.23 No.1 PP 155-164

POPULATION KINETICS AND SEASONAL FLUCTUATION OF ZOOPLANKTON OF DAH-REOTI (BALLIA)- AN OX- BOW LAKE

^*A. K. JHA AND S. R. SINGH

P. G. Department of Zoology,
S.M.M. Town (P. G. ) College,
BALLIA (U. P.) 277001- INDIA
*Corresponding Author :
Email : ashu_jha29@yahoo.co.in

ABSTRACT

The paper deals with the composition and seasonal variation of different groups of zooplankton as related to physico-chemical variables of water of an ox-bow lake - Dah Reoti, Ballia (U.P.) India. It was observed that Rotifera, copepoda and cladocera encountered in order of abundance (Rotifera>copepoda>cladocera) constituted the major groups of zooplankton. Protozoans and insect larvae were observed in negligible number hence not considered in the present study. Overall winter season provided the most propitious conditions for seasonal abundance (50.80%) probably owing to rich nutrient supply. Period from mid summer to mid monsoon was noticed tough period for zooplankton population owing to high silt load from tributary streamlets, fast wind action and increased pollution load.

Key words : Ballia, Fluctutation, Ox-Bowlake, Water quality, Zooplankton.