• Chiranjib Mandal
• Pallab Banerjee
• Sajal Ray

Bellamya bengalensis is an aquatic mollusc distributed in the freshwater reservoirs of different states of India including West Bengal. B. bengalensis is a benthic mollusc and is capable of filterfeeding. Aquatic molluscs are involved in bioaccumulation of toxic materials. This edible species is a cheap source of proteinaceous diet of human being, poultry and component of the artificial fish feed. Fenvalerate is an agricultural pesticide which is used to control insect pest and domestic uses. Agricultural runoff contaminates freshwater reservoirs of India. In this present investigation, phosphatase activity both acid and alkaline of hemocytes of B. bengalensis were estimated under the sublethal exposure of fenvalerate in controlled laboratory condition for 24, 48, 72, 96 hours and 15 days time span. In the large sized male B. bengalensis, the highest inhibition of acid phosphatase was recorded as 0.12 ± 0.03 µM/mg protein/ min against the concentration of 3ppm of fenvalerate for 96 hours of exposure. In the large sized female B. bengalensis the highest inhibition of acid phosphatase activity recorded as 0.14 ± 0.03 µM/mg protein/min against the concentration of 3 ppm of fenvalerate for 96 hrs exposure. In the large sized male B. bengalensis the highest activity of ALP was recorded as 2.78 ± 0.42 µM/mg protein/min against the concentration of 1 ppm of fenvalerate for 96 hours of exposure. In the large sized female B. bengalensis the highest activity of ALP was recorded as 2.62 ± 0.82 µM/mg protein/min against the concentration of 2 ppm of fenvalerate for 96 hours of exposure. The lowest activity of ALP was recorded as 0.48 ± 0.1 µM/mg protein/min against the concentration of 2 ppm of fenvalerate for 48 hour exposure. Fenvalerate exposure resulted in a dose independent decrease in the activities of two specific phosphatases and may be determined as a suitable biomarker of freshwater ecosystem of India.

Fenvalerate, Bellamya bengalensis, Hemocytes, Phosphatases

"Activity of phosphatases in the hemocytes of a commercially important viviparous mollusc Bellamya bengalensis exposed to a synthetic fenvalerate", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 8, page no.656-660, August-2018, Available :http://www.jetir.org/papers/JETIR1808247.pdf

"Activity of phosphatases in the hemocytes of a commercially important viviparous mollusc Bellamya bengalensis exposed to a synthetic fenvalerate", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp656-660, August-2018, Available at : http://www.jetir.org/papers/JETIR1808247.pdf