Volume No. 9 Issue No.: 2 Page No.: 324 -333 October-December 201

 

SNAILS AS SENTINEL ANIMALS FOR BIOMONITORING OF HEAVY METALS FROM NAKANE LAKE IN DHULE DISTRICT OF MAHARASHTRA, INDIA

 

Petare R. K.*, Khodake S. P.1 and Waykar B. B.2

1. Department of Zoology, Karm. A. M. P. and N. K. P. A. S. C. College , Pimpalner, Dhule, Maharashtra (INDIA) 2. Department of Zoology, Dr. Babasaheb Ambedkar Marathawada University, Aurangabad, Maharashtra (INDIA)

 

Received on : July 10, 2014

 

ABSTRACT

 

The levels of heavy metals zinc, copper, cadmium and lead in Nakane lake of Dhule district, Maharashtra, India were studied in water, sediments and native fresh water snail species, Bellamya bengalensis and Mellanoides tuberculata. The results showed that in surface water the cadmium (0.1032 0.001 mg/l) and lead (0.7276 0.002 mg/l) concentration exceeded higher limit of WHO water standard. It was observed that, concentration of four metals zinc ( 329.44 0.12 ?g/g ), copper (259.720.08?g/g), cadmium (0.1170 0.09 ?g/g) and lead (64.070.03 ?g/g) were higher in the sediment as compared to water. The bioaccumulation levels of zinc, copper, cadmium and lead in Bellamya bengalensis were 166.700.23, 101.190.03, 8.330.16 and 117.010.006 ?g/g respectively, and for Mellanoides tuberculata were 142.910.15, 125.290.05, 11.800.03 and 80.260.03 ?g/g respectively. The metal concentration in snail species was higher than the water and sediment. The BCF values suggested that the Bellamya bengalensis, have greater capacity for zinc and lead bioaccumulation than Mellanoides tuberculata, While Mellanoides tuberculata has greater capacity for copper and cadmium bioaccumulation than Bellamya bengalensis. Therefore, Bellamya bengalensis, is being proposed as sentinel organism for monitoring of zinc and lead and Mellanoides tuberculata for copper and cadmium in freshwater.

 

Keywords : Heavy metals, Snails, Bioconcentration Factor, Nakane lake, Bioaccumulation

 

 

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