scholarly journals Larvicidal Activity of Tinospora crispa (Menispermaceae) Fruit Extract Against Filarial Vector Culex quinquefasciatus

Author(s):  
Jibon Kumar Pal ◽  
Aniket Singh ◽  
Anjali Rawani ◽  
Goutam Chandra
Author(s):  
Funmilayo G. Famuyiwa ◽  
Francis B. Adewoyin ◽  
Oluyemi J. Oladiran ◽  
Oluwatosin R. Obagbemi

Aim: The methanol extracts of fifteen plants and their partitioned fractions were screened for larvicidal activity against the fourth instar of larvae Culex quinquefasciatus, the vector of lymphatic filariasis with a view to identifying the active ones. Methodology: The plant parts were collected, separately dried and milled. Each powdered material was extracted in methanol at room temperature for 3 days, with agitation. The extract was filtered and concentrated in vacuo. Each extract was tested against the fourth instar larvae of Cx. quinquefasciatus. The methanol extracts were suspended in water and successively partitioned into n-hexane and ethylacetate. Each partitioned fraction was also tested against the fourth instar larvae of Cx. quinquefasciatus. Results: About fifty six percent (56.3%) of the tested extracts had moderate larvicidal activity after 48 hours. The fruit extract of Thevetia neriifolia and the leaf extracts of Calotropis procera and Solanum macrocarpon were the most active. After partitioning the methanol extracts, each of the plant extracts had one or two highly active partitioned fractions after 48 hours. The n-hexane fractions of S. macrocarpon (0.78 ± 0.03 mg/mL) and Spondias mombin (0.81 ± 0.03 mg/mL) were the most active. Conclusion: The non-polar fractions of S. macrocarpon and S. mombin were the most active. Purification of these highly active fractions could lead to the isolation of potent larvicidal compounds that could be used in the control of Cx. quinquefasciatus mosquito.


2011 ◽  
Vol 4 (6) ◽  
pp. 436-441 ◽  
Author(s):  
Emdad Hossain ◽  
Anjali Rawani ◽  
Goutam Chandra ◽  
Subhash C. Mandal ◽  
Jayanta Kumar Gupta

2014 ◽  
Vol 4 ◽  
pp. S373-S377 ◽  
Author(s):  
Murugesan Sakthivadivel ◽  
Palani Gunasekaran ◽  
Jeevanandham Therasa Annapoorani ◽  
David Arul Samraj ◽  
Subramanian Arivoli ◽  
...  

1996 ◽  
Vol 86 (3) ◽  
pp. 223-226 ◽  
Author(s):  
G. Chandra ◽  
B. Seal ◽  
A.K. Hati

AbstractAge composition of the filarial vector mosquito Culex quinquefasciatus (Say) was determined by examining the number of ovariolar dilatations of 1200 adult females from Calcutta. Average duration of the gonotrophic cycle was 4.5 days. The proportion parous, the daily survival rate and daily mortality rates of the natural population were 0.53, 0.87 and 13%, respectively. The oldest mosquito sampled in the study area passed eight gonotrophic cycles in its lifetime.


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