Predatory Mite Composition with Factitious Host for Stable Rearing
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Solution Overview
Problem
Manufacturers face challenges in finding an economical and easily bred host mite for predatory mites in biological pest control, as different mite families and species have unique characteristics and requirements, and existing hosts may produce toxins or overwhelm cultures, affecting crop impact and allergenic properties.
Innovation Solution
A composition comprising a breeding population of Amblyseius swirskii predatory mites and a factitious host population from the family Suidasiidae, particularly Suidasia medanensis, which is easily bred and serves as a suitable food source, maintaining a steady supply without adverse effects, and can be combined with other species like Acarus gracilis and Chortoglyphus arcuatus, supported on organic carriers with inert components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a host mite species is selected for rearing predatory mites, then the predatory mite population can be maintained, but the host may produce toxins or overwhelm the culture, adversely affecting the predatory mite and crop
Solution Approach 1:
The patent uses a factitious host mite (Acarus gracilis) as an intermediary species that serves as a safe food source for predatory mites. This intermediary host does not produce harmful toxins and can be easily bred in controlled conditions, resolving the contradiction between maintaining a stable food supply and avoiding harmful effects on the predatory mite population.
Solution Approach 2:
The factitious host mite is designed to be easily bred and replaced, serving as a temporary, disposable food source that can be mass-produced without long-term cultural establishment. This allows continuous supply of food for predatory mites without the need for permanent, potentially harmful host populations.
2Productivity
If a host mite with high multiplication rate is used, then a steady food supply is maintained, but the host may overwhelm the culture and have significant impact on crop plants
Solution Approach 1:
The factitious host mite is confined to specific rearing environments and does not establish permanent populations on crop plants. Its high multiplication rate is utilized locally in controlled rearing systems where it serves as food, while its potential harmful impact on crops is prevented by restricting its distribution to non-crop areas.
3Ease of manufacture
If a host mite is used that is easily bred and economical, then production costs are reduced, but the host may have allergenic properties or require specific breeding conditions
Solution Approach 1:
The patent creates a simplified version of a natural host-mite system by using a factitious host species that replicates the essential function of providing food for predatory mites. This copied system uses Acarus gracilis, which can be easily bred in controlled conditions and does not exhibit the same allergenic properties as some natural host species, thus resolving the contradiction between ease of breeding and allergenic concerns.
Data Source
AI summary
A composition comprising a population of a predatory mite and a host mite population selected from the family of Suidasiidae or Chortoglyphidae.