Pheromone Composition for Stenoma catenifer Control
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Solution Overview
Problem
Current sex pheromone compositions for controlling the avocado seed moth (Stenoma catenifer) are insufficient in attracting a large number of insect pests, leading to ineffective control methods like mass trapping and mating disruption.
Innovation Solution
A composition comprising (9Z)-9,13-tetradecadien-11-ynal and its geometric isomer (9E)-9,13-tetradecadien-11-ynal, along with a sustained release preparation for controlled delivery, to enhance attraction and control of Stenoma catenifer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If (9Z)-9,13-tetradecadien-11-ynal is used as a sole bioactive component, then the composition has high specificity to male adults, but the attracted number is small and attraction activity is insufficient
Solution Approach 1:
The patent combines (9Z)-9,13-tetradecadien-11-ynal with its geometric isomer (9E)-9,13-tetradecadien-11-ynal in a composition. This merging of two similar but distinct compounds resolves the contradiction by maintaining the high specificity of the Z-isomer to male adults while adding the E-isomer to increase the overall attracted number, achieving both specificity and quantity simultaneously
2Ease of operation
If conventional attractant compositions are used, then the control methods can be implemented, but the control effectiveness is insufficient due to low attraction activity
Solution Approach 1:
The patent changes the compositional parameters of the attractant by incorporating a specific ratio of (9Z)-9,13-tetradecadien-11-ynal and (9E)-9,13-tetradecadien-11-ynal. This parameter change resolves the contradiction by enhancing the attraction activity and control effectiveness while maintaining the ease of implementing control methods like mass trapping and mating disruption
Data Source
AI summary
There are provided a composition which has a larger attracted number than (9Z)-9,13-tetradecadien-11-ynal alone; and others. More specifically, there are provided a composition bioactive to Stenoma catenifer (STENCA), the composition including (9Z)-9,13-tetradecadien-11-ynal and (9E)-9,13-tetradecadien-11-ynal; a sustained release preparation for controlling STENCA, the preparation including the composition and a carrier or container for sustainedly releasing the (9Z)-9,13-tetradecadien-11-ynal and the (9E)-9,13-tetradecadien-11-ynal; and a method for controlling STENCA, the method including a step of installing the sustained release preparation in a field to release the (9Z)-9,13-tetradecadien-11-ynal and the (9E)-9,13-tetradecadien-11-ynal into the field.