International Journal of Environmental Sciences

Volume 3 Issue 1 2012- July 2012        Pages: 297- 304            <<Previous    Next>>

Acute toxicity of cadmium, copper, lead and zinc to tiger shrimp Penaeus monodon postlarvae

Author Information:

Raj Kumar J.S.I
School of Biodiversity and Environmental Monitoring Lab, Department of Advanced Zoology and Biotechnology, Loyola College, Chennai-600034, Tamilnadu, India

ABSTRACT

The acute toxicity of cadmium, copper, lead and zinc to Penaeus monodon (Tiger prawn) was evaluated in static renewal tests. Each test lasted up to 4 days and 96 hours LC50 values were calculated. The toxicity of each metal increased with exposure time for cadmium, copper, lead and zinc respectively. The 96 hours LC50 values based on the measured concentration for cadmium, copper, lead, and zinc were 1.72, 0.66, 0.41, 2.36 mg/l. Lead was toxic to P.monodon than zinc followed by cadmium and copper tested. The order of toxicity was Pb>Cu>Cd>Zn. Our results found that postlarvae are well protected by both the current CCME Canadian water quality guidelines for the protection of aquatic life, as LC50 values were at least 25 times higher than the guideline concentrations.

Keywords: Copper, cadmium, lead, zinc, tiger shrimp, Penaeus monodon, Postlarvae

DOI: 10.6088/ijes.2012030131029

© 2012 Copyright by the authors, licensee Integrated Publishing Association.This is an open access article distributed under the Creative Commons Attribution License (3.0) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

The electronic version of the article can be downloaded below

Download full text pdf

SocialTwist Tell-a-Friend