Opaque Side Ducts for Frugivorous Insect Trapping
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Solution Overview
Problem
Existing trapping devices for frugivorous insects face inefficiencies due to insects being confused by direct light and transparency, which hinders entry and increases escape rates, especially when attractant effectiveness diminishes during prolonged trapping campaigns.
Innovation Solution
The trapping device incorporates opaque side ducts that create semi-darkness, utilizing phototropism to guide insects inside while preventing exit, with tilted and colored ducts to enhance entry and hinder exit, and a removable design for ease of use and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If transparent side ducts are used in trapping devices, then insects can see light and attempt to exit through them, but this transparency causes insects to become confused and unable to find the actual exit, reducing capture effectiveness
Solution Approach 1:
The patent applies color changes by making the side ducts opaque (black or dark-colored) instead of transparent. This prevents insects from seeing through the ducts and becoming confused, while still allowing them to enter through the entrance hole. The opaque material blocks light transmission, creating a clear visual distinction between the entrance and potential false exits, thereby improving capture effectiveness without complicating manufacturing.
2Duration of action of moving object
If attractants are used alone for insect trapping, then insects are attracted to the device, but over time (60-120 days) the attractant effectiveness diminishes and capture rates reduce progressively
Solution Approach 1:
The patent merges two trapping mechanisms: attractant-based attraction and phototropic confusion. By combining the attractant (which draws insects in) with the opaque side ducts (which prevent escape through visual confusion), the device maintains effectiveness throughout the 60-120 day period. The attractant ensures continuous insect attraction while the opaque ducts provide persistent escape prevention, creating a synergistic effect that sustains capture rates over extended periods.
Solution Approach 2:
The patent converts the harmful effect of light (which can help insects navigate and escape) into a beneficial effect by using opaque materials to block light transmission through side ducts. This creates a visual confusion that prevents insects from finding exits, transforming what could be a navigation aid into a trapping mechanism that works continuously alongside the attractant.
3Ease of operation
If the device structure is simplified for ease of manufacture and storage, then manufacturing and storage become easier, but the device may not effectively facilitate insect entry and retention
Solution Approach 1:
The patent segments the device into separable components: a body portion and a cover that can be detached. This allows the device to be disassembled for compact storage and easy transport, while maintaining the functional integrity of the opaque side ducts and attractant reservoir when assembled. The segmentation enables ease of storage without compromising the trapping mechanism's reliability.
Solution Approach 2:
The opaque side ducts are integrated into the device structure in a way that maintains both functionality and simplicity. The color change principle is applied through the opaque material selection, which provides the necessary visual blocking function while being easy to manufacture and integrate into the overall device structure, thus maintaining both reliability and ease of operation.
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
This design significantly increases insect capture rates by facilitating entry and prolonging insect retention within the device, reducing escape and enhancing the effectiveness of attractants and insecticides, thereby improving the overall trapping efficiency and reducing plant damage.
Implementation Method 1
The transparent side tubes in the state of the art devices avail of the phototropism of many flying insects, in other words, their attraction to light, to prevent them from leaving the device.
Data Source
Figure 1
Figure 2~2B
Figure 3~4
AI summary
Trapping device for frugivorous insects comprising a chamber (2) for confining insects and at least one side hole (5) from which a side duct (6) to said chamber (2) starts, the side hole (6) having an entrance mouth (10a) and an exit mouth (10b). The chamber (2) comprises one opaque first zone (3) and a translucent upper second zone (4) through which direct outside light can enter the chamber (2). Furthermore, the side duct (6) is opaque and transverse with respect to the vertical direction, according to an angle between 0 and 20° with respect to the horizontal direction.