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Dr. P. Mukherjee, D.Sc.
FBS, FEHT, FAPT

Head, Department of Botany
K. K. M. College, Pakur-816107, Jharkhand
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Email: prasanjitmukherjee701@gmail.com

The Biobrio 9(1 & 2), 2022

Toxicity of chromium on Macrobrachium rosenbergii

Swarn Singh & Manoj Narayan Bhagat

ABSTRACT:

The toxicity of chromium was conducted on Macrobrachium rosenbergii. Chromium is an
important compound used in cosmetics and pharmaceutical products. Nowadays, the
concentration is increasing in the environment. The toxicity of chromium to the freshwater
prawn Macrobrachium rosenbergii revealed that the 48-hr LC50 was 425 μg/l. Prawn juveniles
were exposed for 45 days to sublethal doses (210, 300, 325 and 375 μg/l ) equivalent to LC10,
LC20, LC30 and LC40, respectively. The results showed that juvenile prawns with an initial
weight of 0.255±0.097 g, in higher concentration (375 μg/l), had significantly decreased from
the control in final mean weight, weight gain, percentage and survival. This study indicated
that Macrobrachium rosenbergii is sensitive to this compound.

Keywords:    Chromium, Macrobrachium rosenbergii, toxicity, survival, growth rate



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