Determination of lead toxicity in Culex quinquefasciatus mosquitoes in the laboratory
Laboratory investigations were carried out to study the effects of lead toxicity and lead uptake on Culex quinquefasciatus mosquitoes. Three different concentrations of lead nitrate were used in laboratory tests (0.05, 0.1, and 0.2 mg/l). An atomic absorption spectrometer (AAS) was used to the deter...
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th-mahidol.169112018-06-21T15:25:39Z Determination of lead toxicity in Culex quinquefasciatus mosquitoes in the laboratory Sirima Kitvatanachai Chamnarn Apiwathnasorn Somjai Leemingsawat Waranya Wongwit Songpol Tornee Mahidol University Srinakharinwirot University Medicine Laboratory investigations were carried out to study the effects of lead toxicity and lead uptake on Culex quinquefasciatus mosquitoes. Three different concentrations of lead nitrate were used in laboratory tests (0.05, 0.1, and 0.2 mg/l). An atomic absorption spectrometer (AAS) was used to the determine lead concentrations. The results showed that lead significantly reduced hatching, egg-production, and emergence rates, compared with the unexposed group (p<0.05). The ratio of female to male offspring was 3.64:1, which was observed in the second generation, after the parents were exposed to 0.2 mg/l lead. No effects were observed on oviposition preference, larval weight, or larval deformation. The LC50of lead against Cx. quinquefasciatus larvae within 24 hours was 0.18 mg/l. There was a significant increase in lead uptake related to increased lead exposure in mosquito larvae (p<0.05). The bioconcentration factor (BCF) showed that the lead concentration in the larvae was 62 times greater than in the water. The lead concentration from parents to offspring reduced in the first and second generations (p<0.05). There was no significant difference between female and male mosquitoes in lead concentration (p>0.05). 2018-06-21T08:25:39Z 2018-06-21T08:25:39Z 2005-07-01 Article Southeast Asian Journal of Tropical Medicine and Public Health. Vol.36, No.4 (2005), 862-874 01251562 2-s2.0-27744432268 https://repository.li.mahidol.ac.th/handle/123456789/16911 Mahidol University SCOPUS https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=27744432268&origin=inward |
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Medicine Sirima Kitvatanachai Chamnarn Apiwathnasorn Somjai Leemingsawat Waranya Wongwit Songpol Tornee Determination of lead toxicity in Culex quinquefasciatus mosquitoes in the laboratory |
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Laboratory investigations were carried out to study the effects of lead toxicity and lead uptake on Culex quinquefasciatus mosquitoes. Three different concentrations of lead nitrate were used in laboratory tests (0.05, 0.1, and 0.2 mg/l). An atomic absorption spectrometer (AAS) was used to the determine lead concentrations. The results showed that lead significantly reduced hatching, egg-production, and emergence rates, compared with the unexposed group (p<0.05). The ratio of female to male offspring was 3.64:1, which was observed in the second generation, after the parents were exposed to 0.2 mg/l lead. No effects were observed on oviposition preference, larval weight, or larval deformation. The LC50of lead against Cx. quinquefasciatus larvae within 24 hours was 0.18 mg/l. There was a significant increase in lead uptake related to increased lead exposure in mosquito larvae (p<0.05). The bioconcentration factor (BCF) showed that the lead concentration in the larvae was 62 times greater than in the water. The lead concentration from parents to offspring reduced in the first and second generations (p<0.05). There was no significant difference between female and male mosquitoes in lead concentration (p>0.05). |
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Mahidol University |
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Mahidol University Sirima Kitvatanachai Chamnarn Apiwathnasorn Somjai Leemingsawat Waranya Wongwit Songpol Tornee |
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Article |
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Sirima Kitvatanachai Chamnarn Apiwathnasorn Somjai Leemingsawat Waranya Wongwit Songpol Tornee |
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Sirima Kitvatanachai |
title |
Determination of lead toxicity in Culex quinquefasciatus mosquitoes in the laboratory |
title_short |
Determination of lead toxicity in Culex quinquefasciatus mosquitoes in the laboratory |
title_full |
Determination of lead toxicity in Culex quinquefasciatus mosquitoes in the laboratory |
title_fullStr |
Determination of lead toxicity in Culex quinquefasciatus mosquitoes in the laboratory |
title_full_unstemmed |
Determination of lead toxicity in Culex quinquefasciatus mosquitoes in the laboratory |
title_sort |
determination of lead toxicity in culex quinquefasciatus mosquitoes in the laboratory |
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2018 |
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https://repository.li.mahidol.ac.th/handle/123456789/16911 |
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1763496029451190272 |