Organochlorine Pesticide Residues in Eggs and Tissues of House Sparrow, <Emphasis Type="Italic">Passer domesticus,</Emphasis> from Tamil Nadu,India |
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Authors: | V Dhananjayan S Muralidharan S Ranapratap |
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Institution: | 1.Industrial Hygiene and Toxicology Division, Regional Occupational Health Centre,ICMR,Bangalore,India;2.Sálim Ali Centre for Ornithology and Natural History (SACON),Coimbatore,India |
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Abstract: | This study provides information on the current status of contamination by organochlorine pesticides (OCPs) in eggs and tissues
of House Sparrow, Passer domesticus, in Tamil Nadu, India. The mean concentration of total hexachlorocyclohexane (∑HCH) and total dichloro-diphenyl-trichloroethane
(∑DDT) in eggs ranged from 0.01 to 1.81 μg/g and 0.02 to 1.29 μg/g, respectively. Concentration of 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene
(p,p′-DDE) ranged from below detectable limit (BDL) to 0.64 μg/g, representing more than 60% of the ∑DDTs. About 28% of samples
had p,p′-DDE levels above the critical concentration associated with reproductive impairment. However, the mean concentrations of
cyclodiene insecticides were less than 0.5 μg/g. Although OCPs levels detected in tissues are not indicative of toxicity, continuous monitoring is recommended. |
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