Evaluating Liquid and Granular Bacillus thuringiensis var. israelensis Broadcast Applications for Controlling Vectors of Dengue and Chikungunya Viruses in Artificial Containers and Tree Holes

Journal of Medical Entomology
James F HarwoodAlec G Richardson

Abstract

The principal vectors of chikungunya and dengue viruses typically oviposit in water-filled artificial and natural containers, including tree holes. Despite the risk these and similar tree hole-inhabiting mosquitoes present to global public health, surprisingly few studies have been conducted to determine an efficient method of applying larvicides specifically to tree holes. The Stihl SR 450, a backpack sprayer commonly utilized during military and civilian vector control operations, may be suitable for controlling larval tree-hole mosquitoes, as it is capable of delivering broadcast applications of granular and liquid dispersible formulations of Bacillus thuringiensis var. israelensis (Bti) to a large area relatively quickly. We compared the application effectiveness of two granular (AllPro Sustain MGB and VectoBac GR) and two liquid (Aquabac XT and VectoBac WDG) formulations of Bti in containers placed on bare ground, placed beneath vegetative cover, and hung 1.5 or 3 m above the ground to simulate tree holes. Aedes aegypti (L.) larval mortality and Bti droplet and granule density data (when appropriate) were recorded for each formulation. Overall, granular formulations of Bti resulted in higher mortality rates in the simulate...Continue Reading

References

Jan 1, 1993·Medical and Veterinary Entomology·W A SamarawickremaG S Paulson
Mar 13, 2010·Clinical Microbiology and Infection : the Official Publication of the European Society of Clinical Microbiology and Infectious Diseases·F PagesP Parola
Jan 30, 2013·The American Journal of Tropical Medicine and Hygiene·Susan P JacupsScott A Ritchie
Apr 9, 2013·Nature·Samir BhattSimon I Hay
Aug 7, 2013·Trends in Parasitology·Mariangela BonizzoniAnthony A James
Apr 7, 2015·Journal of the American Mosquito Control Association·Eric WilligesRandy Gaugler
Apr 7, 2015·Journal of the American Mosquito Control Association·James C DunfordJerry D Kerce

❮ Previous
Next ❯

Citations

Nov 2, 2016·Journal of the American Mosquito Control Association·James F HarwoodAlec G Richardson
Jun 8, 2017·Journal of the American Mosquito Control Association·James E CilekAlec G Richardson
Aug 24, 2020·Journal of Medical Entomology·Bethany L McGregor, C Roxanne Connelly

❮ Previous
Next ❯

Related Concepts