Specificity of action on mosquito larvae of Bacillus thuringiensis israelensis toxins encoded by two different genes

1988 ◽  
Vol 214 (1) ◽  
pp. 42-47 ◽  
Author(s):  
Armelle Delécluse ◽  
Catherine Bourgouin ◽  
André Klier ◽  
Georges Rapoport
2018 ◽  
Vol 11 (1) ◽  
Author(s):  
Guillaume Tetreau ◽  
Stéphanie Grizard ◽  
Chandrashekhar D. Patil ◽  
Florence-Hélène Tran ◽  
Van Tran Van ◽  
...  

2015 ◽  
Vol 176 ◽  
pp. 48-54 ◽  
Author(s):  
Jihen Elleuch ◽  
Raida Zribi Zghal ◽  
Marie Noël Lacoix ◽  
Fabrice Chandre ◽  
Slim Tounsi ◽  
...  

Hydrobiologia ◽  
2008 ◽  
Vol 607 (1) ◽  
pp. 231-235 ◽  
Author(s):  
Örjan Östman ◽  
Jan O. Lundström ◽  
Thomas Z. Persson Vinnersten

2011 ◽  
Vol 27 (1) ◽  
pp. 45-55 ◽  
Author(s):  
John F. Anderson ◽  
Francis J. Ferrandino ◽  
Douglas W. Dingman ◽  
Andrew J. Main ◽  
Theodore G. Andreadis ◽  
...  

2018 ◽  
Vol 20 (2) ◽  
pp. 279
Author(s):  
I.A. Adeyemo ◽  
S.O. Abdul-Wahab ◽  
A.A. Obadofin

1989 ◽  
pp. 169-188
Author(s):  
Sarjeet S. Gill ◽  
Edward Chow ◽  
Gur Jai Pal Singh ◽  
Patricia Pietrantonio ◽  
Shu-Mai Dai ◽  
...  

2008 ◽  
Vol 23 (4) ◽  
pp. 251-258
Author(s):  
Milenka Peric ◽  
Mirjana Prijovic ◽  
Goran Andric

Toxicity and persistence of two formulations based on Bacillus thuringiensis subsp. israelensis applied to Aedes aegypti mosquito larvae were tested under laborabory conditions. The formulations were: a) water dispersible granules (product VectoBac WDG), and b) aqueous suspension (product VectoBac 12AS). The effects of both products on mosquito larvae were tested immediately after their dilution in pure water (zero time) and in 1-, 2-, 8- and 13-day old solutions. The two products were also tested in mixtures of water and clay at a rate of 0.5 g clay/150 ml water immediately after product dilution, and in one-day old solutions containing 0.1 and 0.05 g of clay in the same amount of water. The product VectoBac WDG was persistent and highly effective against Ae. aegypti larvae in pure water after the longest experimental period of 13 days, and significantly more effective than VectoBac 12AS at equal rates of application. The effectiveness of VectoBac 12AS weakened significantly after 8 and 13 days of treatment, compared to the effects at zero time and in 1- and 2-day old solutions. High clay content in water significantly reduced the larvicidal effectiveness of both products, indicating its possible compromising role during product application in practice.


2019 ◽  
Author(s):  
Peter Dambach ◽  
Till Bärnighausen ◽  
Anges Yadouleton ◽  
Martin Dambach ◽  
Issouf Traore ◽  
...  

Abstract Background: Biological larviciding is an additional tool that can help address the current dilemma in malaria control, namely vector resistances to pyrethroids and shifting of biting activity to times when people are not protected. Although malaria interventions primarily target Anopheles mosquitoes, there might be an impact on populations of other mosquito genera that share the same breeding sites. In this study we research to what extent Culex and Aedes mosquitoes, the primary vectors of numerous zoonotic diseases, are affected by larviciding interventions against malaria mosquitoes. Methods: We researched the impact of different larviciding choices with Bacillus thuringiensis israelensis on non-target mosquitoes in 127 rural villages and a semi-urban town in a health district in Northwestern Burkina Faso. All villages were distributed into a total of three study arms with different larviciding choices: full, selective and untreated control. Geographically close villages were distributed into clusters to avoid contamination between treated and untreated villages. Adult mosquitoes were captured in light traps inside and outside houses during the rainy seasons of a baseline and an intervention year. A negative binomial regression was used to determine the reductions achieved through larviciding among different mosquito genera.Results: Larviciding interventions against malaria showed only limited or no impact against Culex mosquitoes, while against Aedes, reductions of up to 34% were achieved when all detected breeding sites in the public space were treated. While the semi-urban setting showed high abundance of Culex, in the rural villages we captured more Aedes. Conclusions: Future larviciding programs should be evaluated for including the treatment of Aedes and Culex breeding habitats. Since the major cost components of such programs are labor and transport, other disease vectors could be targeted at little additional cost.


Sign in / Sign up

Export Citation Format

Share Document