Alpha-Cypermethrin Dinotefuran Mixture for Resistant Mosquito Control
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Solution Overview
Problem
Mosquitoes have developed resistance to pyrethroid insecticides, necessitating higher doses to maintain effectiveness, which raises concerns about increased insecticide use and potential side-effects.
Innovation Solution
A synergistic combination of alpha-cypermethrin and dinotefuran in a weight ratio of 500:1 to 1:500 is applied to mosquitoes, their habitats, or human habitation buildings, using a mixture that includes various formulations such as suspensions, emulsions, and granules, to enhance control efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If higher doses of pyrethroid insecticides are applied to overcome mosquito resistance, then insecticidal effectiveness is maintained, but total insecticide use increases with potential negative side-effects
Solution Approach 1:
The patent combines two insecticides with different modes of action (pyrethroid and neonicotinoid) into a single formulation. This synergistic combination allows achieving the same or better insecticidal effectiveness at lower total doses, thereby maintaining reliability while reducing the quantity of substance required.
Solution Approach 2:
The invention uses a composite insecticide formulation containing both pyrethroid and neonicotinoid classes. This composite approach leverages the complementary mechanisms of action of different insecticide classes to overcome resistance while reducing overall insecticide load.
2Ease of operation
If single insecticide class (pyrethroids) is used continuously, then application simplicity is maintained, but insecticide resistance develops reducing effectiveness
Solution Approach 1:
The patent merges two insecticide classes with different modes of action into a single product. This maintains application simplicity as it is applied as one formulation, while simultaneously combating resistance by utilizing complementary mechanisms that mosquitoes cannot easily resist to both classes simultaneously.
Solution Approach 2:
The invention changes the chemical parameter composition by incorporating neonicotinoids alongside pyrethroids. This parameter change in the insecticide formulation provides a different mode of action that bypasses resistance mechanisms developed against pyrethroids alone.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The combination achieves excellent insecticidal activity with reduced total insecticide amounts, effectively killing or paralyzing mosquitoes, thereby preventing disease transmission, while minimizing environmental impact.
Implementation Method 1
Pyrethroids obstruct the normal function of an insect's sodium channels resulting in the loss of function of the nerve cell, shutdown of the insect nervous system and ultimately death.
Implementation Method 2
Its mode of action involves the disruption of the insect's nervous system by inhibiting nicotinic acetylcholine receptors and has been found useful in controlling pyrethroid resistant pests.
Data Source
AI summary
The present invention relates to uses and methods for combating or controlling mosquitoes, by applying a mixture comprising alpha-cypermethrin and dinotefuran. The mixture is applied in a weight ratio of from 500:1 to 1:500 to said mosquitoes, their habitat, breeding grounds or inside or around human habitation buildings, preferably by spraying an aqueous spray solution.