scholarly journals Toxicity of Vernonia anthelmintica Linn. (Asteracea) seeds against mosquitoes vectors

2010 ◽  
Vol 2 (2) ◽  
pp. 190-193 ◽  
Author(s):  
M. F. Alam ◽  
A.K. Chopra ◽  
Mohammed M. Safhi ◽  
V.K. Dua

The Toxicological activity (larvicidal, adulticidal and repellent toxicity) of Vernonia anthelmintica seeds fraction was tested against different species of mosquito vectors viz, malaria (Anopheles culicifacies and Anopheles stephensi), filaria (Culex quinquefasciatus) and dengue (Aedes aegypti). The larvicidal toxicity of Vernonia anthelmintica seeds fraction was evaluated against the early 4th instars larvae of different mosquitoes species. Mean LC50 value of the column fraction KAL-4 from seeds of V. anthelmintica against the larvae of An. culicifacies, An. stephensi, Culex quinquifaciatus and Aedes aegpyti were found to be 64 ppm, 70 ppm, 143 ppm and 166 ppm respectively. The larvicidal toxicity was more against An. culicifacies, An. stephensi than Culex quinquifaciatus and Aedes aegypti. The seed extracts did not show any adulticidal toxicity and repellent toxicity even at 10% concentrated impregnated paper and 5% on human hand, respectively.

RSC Advances ◽  
2017 ◽  
Vol 7 (7) ◽  
pp. 3838-3851 ◽  
Author(s):  
Chinnasamy Ragavendran ◽  
Nawal Kishore Dubey ◽  
Devarajan Natarajan

The efficacy of bioactive compounds identified from Beauveria bassiana extracts as effective larvicidal and pupicidal agents against Anopheles stephensi, Culex quinquefasciatus and Aedes aegypti mosquito vectors under laboratory conditions are studied.


Acta Tropica ◽  
2017 ◽  
Vol 174 ◽  
pp. 56-63 ◽  
Author(s):  
Johirul Islam ◽  
Kamaruz Zaman ◽  
Varun Tyagi ◽  
Sanjukta Duarah ◽  
Sunil Dhiman ◽  
...  

2017 ◽  
Vol 5 (2) ◽  
pp. 118
Author(s):  
Esy Maryanti ◽  
R. Della Marta ◽  
M Yulis Hamidy

Dengue Hemorrhagic Fever is caused by dengue virus and spread by Aedes aegypti as primarily vector. Preventingdengue virus transmission depends on control of the mosquito vectors. Kiffer lime is one of the potential plants as abotanical larvacidal. The aim of this study was to investigate kiffer lime larvacidal ability against Ae.aegypti larvaebased on LC50 and LC90 levels by probit analize. The design of this research was experimental including preliminarytest and final test. 525 samples of Ae.aegypti larvae instar III/IV were used in this study and divided in to six groupsof experiment. The result were from observation of the larvae mortalities within 24 hours. Assassement of larvacidalefficacy demonstrated that kiffer lime leaf were toxic against Ae.aegypti larvae. LC50 value is 4015,880 ppm and LC90value is 6961,822 ppm. Ethanol extract of kiffer lime leaf could be considered as a potentially alternative source forbotanical larvacides.


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