Open AccessField Efficacy Trials of Aerial Ultra-Low-Volume Application of Insecticides Against Caged Aedes aegypti in Mexico
Author(s) -
Felipe Dzul-Manzanilla,
Fabián Correa-Morales,
Anuar Medina-Barreiro,
Wilbert Bibiano-Marín,
José Vadillo-Sánchez,
Martin Riestra-Morales,
Luis Felipe Del Castillo-Centeno,
Evaristo Morales-Ríos,
Abdiel Martín-Park,
Gabriela González-Olvera,
Armando Elizondo-Quiroga,
Audrey Lenhart,
Gonzalo M. VazquezProkopec,
Azael Che-Mendoza,
Pablo Manrique-Saide
Publication year - 2019
Publication title -
journal of the american mosquito control association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.424
H-Index - 61
eISSN - 1943-6270
pISSN - 8756-971X
DOI - 10.2987/18-6796.1
Subject(s) - pyrethroid , aedes aegypti , biology , aerial application , permethrin , toxicology , mosquito control , larva , aedes , volume (thermodynamics) , pesticide , zoology , veterinary medicine , ecology , immunology , physics , quantum mechanics , malaria , medicine
We evaluated the efficacy of aerial ultra-low-volume (ULV) insecticide spraying in field bioassays with caged Aedes aegypti in May 2017 in Puerto Vallarta, Jalisco, Mexico. The insecticides tested included an organophosphate (Mosquitocida UNO ULV) and a neonicotinoid–pyrethroid combination (Cielo). Two Ae. aegypti populations were evaluated: a field pyrethroid-resistant local strain (Puerto Vallarta) and an insecticide-susceptible laboratory strain (New Orleans). Knockdown after 1 h by both products was ≥97.0%, and mortality after 24 h was ≥98% for the susceptible laboratory strain. Knockdown of the local Puerto Vallarta field strain by both products after 1 h was ≥96.5%; and mosquito mortality after 24 h was also very high (≥98%). Meteorological conditions during this evaluation were favorable for aerial mosquito control and represented conditions that typically occur during adulticide space spray applications. Temperature oscillated between 24°C and 26°C with winds between 6 and 10 km/h. The majority of droplets met the droplet distribution criteria required for the insecticides. The evaluation demonstrated an acceptable performance of both products for Ae. aegypti control when applied undiluted at a rate of 199.4 ml/ha and 73.07 ml/ha for Mosquitocida UNO ULV and Cielo, respectively. The volume median diameter (VMD) droplet size was characterized at 31.3 μm and 37.3 μm, respectively.