OSTRACOD CYPRINOTUS NUDUS AS BIOINDICATOR OF POLLUTION IN FRESHWATER RESERVOIR “ADHALA” AT AKOLE, DISTRICT AHMEDNAGAR
P. S. Kudnar, V. V. Vaidya* and G. K. Kulkarni
Department of Zoology, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad.
*Department of Zoology Gandhi Mahavidyalaya Kada, Tal-Ashti, Dist-Beed
Ostracods are small crustacean group of zooplankton found in aquatic habitats and are commonly known as ‘seed shrimp’. They have laterally compressed body and bivalve carapace enclosing head along with trunk and limbs. These are found in a wide variety of aquatic habitats where weeds or algae are abundant. The present study deals with the role of chemical nutrients causing pollution when present above optimum level in water and its indirect effect on seasonal fluctuation in population of Ostracods. The study was carried out for a period of one year i.e. from October 2008 to September 2009. The study revealed that population density is higher in post monsoon than in summer where as it was lowest during winter. Increase in chemical nutrients like Ca, Mg, PO4, NO3, Cl and SO4 increases algal growth and then ultimate increase in ostracod population indicating that water is polluted due to chemical nutrients.
Keywords: Ostracods, zooplankton, seed shrimp, aquatic habitats, bioindicator