Soil presence reduces the control effectiveness of a slow‐release formulation of pyriproxyfen on Aedes aegypti (Diptera: Culicidae) larvae

Abstract

objective To assess the influence of soil on the effectiveness of two new slow-release formulations (floating and non-floating) of pyriproxyfen coextruded with low-density polyethylene.methods Two slow-release devices were developed using low-density polyethylene, pyriproxyfen as larvicide and calcium carbonate as filler. A factorial design was used to evaluate the effect of soil presence on the performance of each device. Weekly bioassays were performed.results Soil presence affected treatment effectiveness, but this effect was associated with device type. The tablets were effective for nearly 3 months.conclusion Treatment effectiveness could be reduced because of the loss of pyriproxyfen by several physico-chemical processes such as adsorption into the soil.keywords insect growth regulator, larvicide, vector control Sustainable Development Goals (SDGs): SDG 3 (good health and well-being), SDG 9 (industry, innovation and infrastructure), SDG 17 (partnerships for the goals) Tropical Medicine and International Health

The Presence of Aedes Aegypti Mosquito larvae in Bandung City in 2021

“…Shelters that are frequently cleaned can suppress the larvae population so that they do not grow and develop into adult mosquitoes [21]. Draining the water reservoir properly needs to be done by brushing the walls of the water reservoir, then dousing it with hot water, so that if there are mosquito larvae attached to the wall that is difficult to clean, they can immediately melt with hot water [11].…”

“…This disease is transmitted by the Aedes aegypti mosquito [8], which breeds in water reservoirs [9]. Several previous studies have stated that the Aedes aegypti mosquito prefers to breed in open water reservoirs and is rarely cleaned [10][11]. It is necessary to take preventive measures to overcome the problem.…”