Acute toxic effect of pesticides on brine shrimp and opossum shrimp. | [Pakistan Journal of Zoology • 2012]

Author(s):

1. Nafisa Shoaib: Centre of Excellence in Marine Biology, University of Karachi, Karachi-75270, Pakistan

2. P. J. A. Siddiqui: Centre of Excellence in Marine Biology, University of Karachi, Karachi-75270, Pakistan

3. Halima Khalid: Department of Pharmaceutics, Faculty of Pharmacy, University of Karachi, Karachi-75270, Pakistan

Abstract:

The aquatic ecosystem as a greater part of the natural environment is faced with the threat of pesticide pollution. Pesticides enter the food chain and tend to accumulate in organisms at higher trophic level. The present investigation was undertaken to study the acute toxicity (LC50) of organophosphate pesticide (methyl parathion) and pyrethroid pesticide (fenvalerate) on Artemia (brine shrimp) and mysids (opossum shrimp). The value of LC50 when exposed to methyl parathion was 0.00011 ppm for mysids and 0.11 ppm for Artemia. Similarly the LC50 of fenvalerate was found to be 0.0004 ppm for mysids and 0.18 ppm for Artemia. Pesticides appear to be highly lethal at very low concentration. High sensitivity is alarming as it may have implications on natural resources. Therefore, assessment of toxicity of other groups of pesticides on various marine organisms is required.

Page(s): 1753-1757

DOI: DOI not available

Published: Journal: Pakistan Journal of Zoology, Volume: 44, Issue: 6, Year: 2012

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