Acute Toxicity of DDVP (Dichlorvos) on Daphnia magna Straus, 1820

Pakistan Journal of Biological Sciences

Year: 2005 | Volume: 8 | Issue: 1 | Page No.: 40-42
DOI: 10.3923/pjbs.2005.40.42

**Acute Toxicity of DDVP (Dichlorvos) on Daphnia magna Straus, 1820**

Abstract: In this study Daphnia magna was used as test animals. Daphnids were exposured for 96 h to DDVP concentrations ranging from 0.001-0.5 ppm. Death daphnids were counted under a stero microscope 24, 36, 48, 72 and 96 h intervals. The values of lethal concentration (LC_{10, 50, 90}) and Lethal time (LT_{10, 50, 90}) associated 95-99% confidence limits were calculated. Mortality rate between each dosages and mortality rate between 24-96 h depended on time were correlated. LC₅₀ values were changed between 0.741-0.035, while LT₅₀ values were found between 158 17- 4 25. Mortality ratios of Daphnia magna treated with malathion during 96 h period was found significant at 95-99% level (p<0.001-0.005).

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How to cite this article

Serap Saler and Naim Saglam, 2005. Acute Toxicity of DDVP (Dichlorvos) on Daphnia magna Straus, 1820. Pakistan Journal of Biological Sciences, 8: 40-42.

Keywords: lethal concentration, Daphnia magna, DDVP and lethal time

REFERENCES

Anonymous, 1987. Office of Prevention Pesticides and Toxic Substances. Environmental Protection Agency, Washington, DC

Anonymous, 1990. Proposed provisional environmental quality standards for dichlorvos in water. United Status Environmental Protection Agency. Report No. DWI0119.

Cooney, J.D., 1995. Freshwater Tests. In: Fundamentals of Aquatic Toxicology. Effects, Environmental Fates and Risk Assessment, Rand, G.M. (Ed.). 2nd Edn., Taylo and Francis, Washington, DC., pp: 71-102

Ward, G.S. and P.R. Parrish, 1982. Manual of methods in aquatic environment research, Part 6: Toxicity tests. FAO Fisheries Technical Paper No. 185, Food and Agriculture Organization of the United Nations, Rome, Italy, pp: 1-23.

Christensen, E., 1984. Dose-response functions in aquatic toxicity testing and the weilbull model. Water Res., 18: 213-221.

Sumbuloglu, R.S. and V.V. Sumbuloglu, 1997. Biyoistatistik. Hatipoglu Yayinevi, Ankara, pp: 269

Isnard, P., P. Flammarion, G. Roman, M. Babut and P. Bastien et al., 2001. Statistical analysis of regulatory ecotoxicity tests. Chemosphere, 45: 659-669.

Sanders, H. and O.B. Cope, 1966. Toxicity of several pesticides to two species of cladocerans. Trans. Am. Fish. Soc., 95: 165-169.

Anonymous, 1993. U.S. Department of Health and Human Services, Registry of Toxic Effects of Chemical Substances (RTECS, online database) National Toxicology Information Program. National Library of Medicine, Bethesda, MD

Nacz-Jawecki, G., E. Kurcharczyk and J. Sawicki, 2002. The sensivity of protozoan Spirostomum ambiguum to selected pesticides. Fresenius Environ. Bull., 11: 98-101.

Forget, J., F. Pavillon, M.R. Menasria and G. Bocquene, 1998. Mortality and LC50 values for several stages of the marine copepod tigriopus brevicornis (Muller) exposed to metals arsenic and cadmium and the pesticides atrazine, carbofuran, dichlorvos and malathion. Ecotoxicol. Environ. Safety, 40: 239-244.

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