Larvicidal, Ovicidal and repellent effect of Citrus hystrix DC (Kaffir lime) fruit, peel and internal materials extracts on Aedes aegypti mosquitoes
Journal Title: JOURNAL OF BIOLOGICAL ENGINEERING RESEARCH AND REVIEW - Year 2017, Vol 4, Issue 1
Abstract
The present study aimed to evaluate the larvicidal, ovicidal and repellent activity of ethanol extracts of dry fruit, peels and internal fruit materials of Citrus hystrix DC against Aedes aegypti. Aedes aegypti larvae were collected from Than Byu Zayat Township Mon State and 50 each 3 rd and 4th instar larvae were exposed for 24 hours in various concentrations of ethanol extracts of different parts of the Citrus hystrix fruit, done 5 replicates. The dry fruit and peels extracts resulted in significantly higher 100% mortality (P<0.05) when compared to the mortality (86.8%) caused by internal material of Citrus hystrix fruit at the concentration of 0.1gm/100ml against Aedes larvae. The dose 0.0125g/100 ml of Citrus hystrix fruit extract was found to be 100% protection from oviposition of gravid Aedes aegypti mosquitoes in laboratory. The LC50 and LC90 values were 0.0138, 0.0142 and 0.0276, and 0.0515, 0.0522 and 0.1045 g for fruit extract, peel and internal material. The highest repellency activity of complete protection time of Citrus hystrix DC dose 0.0002g/cm2 was found dry fruit extract followed by peel extract and lowest activity was found internal fruit materials extracts. These three extracts provided 100%, 97.52% and 92.15% protection from bite for 30min and 96.72%, 86.25% and 80.25% protection for 60 min and 88.52%, 80.1% and 73.52% protection for 90min, against adult Aedes aegypti. These extracts did not cause dermal irritation when applied to animal skins. The findings of the present study revealed that the ethanol extract of the fruit of Citrus hystrix DC has strong larvicidal, ovicidal and repellent properties on Aedes mosquitoes as a good source of preparations for mosquito control.
Authors and Affiliations
Maung Maung Mya, Zar Zar Aung, Chit That Nwe, Aye Win Oo, Than Myat Htay, Sein Thaung, Yan Naung Maung Maung
Keywords
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