World Journal of
Pharmaceutical and Life Sciences

EFFECT OF DIFFERENT CONCENTRATION OF TABLE SALT AND IODINE TREATED SALT AGAINST 3RD AND 4TH INSTARS AEDES AEGYPTI AND AEDES ALBOPICTUS LARVAE IN LABORATORY

Myat Thandar Swe*, Maung Maung Mya**, Cho Cho Oo*, Tin Mar Yi Tun*, Ni Ni Win***, Yan Naung Maung Maung** and Kyaw Zin Thant**

ABSTRACT

The present study aimed to evaluate the larvicidal activity of different concentration of table salt and iodine salt on laboratory reared Aedes aegypti larvae from Dagon Myothit North Townships in Yangon Region from May 2017 to April 2018. Third and fourth instar larvae 50 each were exposed for 24 hours in different concentrations as 2.5, 2.0, 1.5, 1.0, 0.5, 0.25 gram of table salt and Iodine salt were prepared freshly by dissolving in 100ml each of tap water inside each 250ml plastic cups and also negative control test was done simultaneously of both salt solutions. The resulted found that Knockdown effect of Ae. aegypti and Ae. albopictus were not significantly difference at the highest concentration of 2.5g/100ml i.e. 64.80%, 65.20% in table salt and 66.00%, 67.20% in iodine salt respectively after 60 minute exposure period. Although after 24 hours exposure period the mortality of both 3rd and 4th instar larvae of Ae. aegypti and Ae. albopictus in same highest dilution were found 95-96% mortality in table salt and 100% mortality in iodine salt solution. Lethal Concentration for 50% mortality (LC50) in both Ae. aegypti and Ae. albopictus was observed 1.0671g and 0.9930g for table salt and 0.6963g and 0.5240g for iodine salt solution and LC90 values were found 2.4509g and 2.1375g for table salt and 1.4986g and 1.2268g for iodine salt solution. The findings of the present study revealed that 2.5g in 100 ml of iodine salt solution has strong larvicidal activity on both Ae. aegypti and Ae. albopictus mosquito larvae as a good source of preparations for mosquito control. Table salt and Iodinated salt are easily available and eco-friendly nature therefore these salts should be included as one of the tools to prevent Dengue fever/Dengue hemorrhage fever, Zika and Chikungunya infection from Aedes vector vie to destroy breeding place of Ae. aegypti and Ae. albopictus in household and per- household situations.

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