An efficient phototactic insect trapping method

Abstract

The present application belongs to the technical field of forest pest control, and discloses a kind of efficient weak light seeking insect light trapping method, which opens strong light inhibitory behavior when weak light seeking insects seek for pair at normal field normal photoperiod;After 30 minutes, when the night sky is dark enough, the strong light is turned off, and the darkness stimulates the behavior;At the same time, weak ultraviolet light is turned on to stimulate the phototaxis behavior of weak light seeking insects, realizing efficient light trapping of weak light seeking insects represented by eucalyptus moth, and solving the problem of efficient light trapping and killing of weak light seeking insects.

Description

An efficient method for attracting insects attracted by weak light using light. Technical Field

[0001] This invention relates to the field of forest pest control technology, and in particular to a highly efficient method for attracting insects attracted to weak light using light. Background Technology

[0002] The eucalyptus bat moth (Endoclita vietnamensis) is a major forest pest, causing severe damage, especially to eucalyptus trees. The larvae bore into the xylem and phloem of eucalyptus trees, leading to stunted growth and even death. Currently, there are no effective methods for controlling the eucalyptus bat moth using light traps.

[0003] Previous studies revealed that the courtship and mating behavior of the eucalyptus bat moth is brief and strictly influenced by photoperiod. It flies for only 15-20 minutes around 7 PM each day to mate, spending the rest of the time hanging upside down on branches. Previous research also found that the eucalyptus bat moth exhibits phototaxis, preferring a maximum light intensity of 8 Lux (CN202310796245.9). However, using only weak light to attract eucalyptus bat moths is not highly effective. After five years of field practice, it has been proven that a combined strong and weak light stimulation strategy can effectively attract adult eucalyptus bat moths. Based on this key technology, a more efficient method for attracting eucalyptus bat moths in forests using light has been proposed. This technique can be widely applied to phototaxis insects to achieve efficient attraction of these insects. Summary of the Invention

[0004] This invention discloses an efficient method for attracting light-attracting insects that are attracted to weak light, aiming to solve the problem of efficient light-attracting and killing of light-attracting insects, represented by the eucalyptus bat moth, as mentioned in the background art.

[0005] To achieve the above objectives, this method is a light-attracting technique that combines strong and weak light. The core of the technique is to suppress sexual behavior with strong light during normal photoperiod courtship; when it is dark enough in the wild, the strong light is turned off, and the darkness re-stimulates sexual behavior; at the same time, weak ultraviolet light is turned on to stimulate phototaxis and thus attract eucalyptus moths with light. The technique consists of four stages.

[0006] (1) During a normal photoperiod, the light around 19:30 at dusk stimulates its sexual behavior, which is to cause body vibration and wings to spread out in a triangular shape.

[0007] (2) When eucalyptus moths exhibit sexual behavior during normal photoperiods, strong light stimulation can inhibit sexual behavior. At this time, the strong light must be greater than the maximum light intensity of 8 Lux that eucalyptus moths prefer. To overcome the aggregation of eucalyptus moths by light, it has been found in practice that only when the night sky is dark enough and the light intensity is lower than the maximum light intensity of 8 Lux that eucalyptus moths prefer, will the light used for aggregation be more attractive than the night sky, and the eucalyptus moths will gather near the light.

[0008] (3) Turn off strong light and create a dark environment at night, which can stimulate the sexual behavior of the eucalyptus bat moth, causing it to vibrate and spread its wings in a triangular shape.

[0009] (4) Turn on a weak ultraviolet lamp with a light intensity slightly greater than 8 Lux to stimulate the phototaxis of eucalyptus moths, thereby achieving light-attracting of the moths. Compared with the prior art, the present invention has the following advantages:

[0010] (1) This invention significantly improves the trapping efficiency of eucalyptus bat moths by using a combination of strong and weak light.

[0011] (2) This invention is applicable to a variety of different site conditions, and solves the limitations of the original light-attracting method, so that it can be effectively applied in a wider range of environments. Attached Figure Description

[0012] Figure 1 shows 13 eucalyptus bat moths attracted by forest lights in the wild, as shown in the box. Detailed Implementation

[0013] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as a limitation of the present invention, but rather as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0014] It should be understood that the terminology used in this invention is merely for describing particular embodiments and is not intended to limit the invention. Furthermore, with respect to numerical ranges in this invention, it should be understood that each intermediate value between the upper and lower limits of the range is also specifically disclosed. Every smaller range between any stated value or intermediate value within a stated range, and any other stated value or intermediate value within said range, is also included in this invention. The upper and lower limits of these smaller ranges may be independently included or excluded from the range.

[0015] Unless otherwise stated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. While only preferred methods and materials have been described herein, any methods and materials similar or equivalent to those described herein may be used in the implementation or testing of this invention. All references to this specification are incorporated by way of citation to disclose and describe methods and / or materials associated with those references. In the event of any conflict with any incorporated reference, the content of this specification shall prevail.

[0016] Various modifications and variations can be made to the specific embodiments described in this specification without departing from the scope or spirit of the invention, as will be apparent to those skilled in the art. Other embodiments derived from this specification will also be obvious to those skilled in the art. This application specification and embodiments are merely exemplary.

[0017] The terms “include,” “including,” “have,” “contain,” etc., used in this article are all open-ended terms, meaning that they include but are not limited to.

[0018] Embodiments of the present invention provide an efficient method for attracting insects attracted to weak light using light:

[0019] Example 1

[0020] This implementation example set up three different light source test groups to attract adult eucalyptus bat moths in the forest: one group used a 1000-watt high-pressure mercury lamp and a 6-watt ultraviolet LED lamp for attraction alone, and the other group used an alternating combination of a 1000-watt high-pressure mercury lamp and a 6-watt ultraviolet LED lamp. Attraction in all three test groups began at 19:30, the peak activity period for eucalyptus bat moths, and ended at 20:30.

[0021] Table 1. Number of adult eucalyptus moths attracted under different light sources and environments.

[0022]

[0023] Experimental results showed that using a 1000-watt high-pressure mercury lamp or a 6-watt ultraviolet LED lamp alone was not effective in attracting adult eucalyptus moths. However, using an alternating method of using a 1000-watt high-pressure mercury lamp and a 6-watt ultraviolet LED lamp effectively attracted 121 adult eucalyptus moths. To demonstrate that this invention overcomes the limitations of existing light-based attraction methods, this embodiment selected four different slopes at two different attraction locations for experiments. The results confirmed that this invention can achieve highly effective attraction of adult eucalyptus moths in various environments.

[0024] Example 2

[0025] This implementation example counts the number of adult eucalyptus moths attracted and landed at different locations over 8 days under alternating light sources of a 1000-watt high-pressure mercury lamp and a 6-watt ultraviolet LED lamp.

[0026] Table 2. Locations of adult eucalyptus moths under alternating attraction with 1000-watt high-pressure mercury lamps and 6-watt ultraviolet LED lamps.

[0027]

[0028] The results showed that most adult eucalyptus moths, after being attracted by light, remained within 25 meters of the light source. The majority remained within 0-5 meters of the light source, with a smaller portion remaining within 5-10 meters. Therefore, setting up adult eucalyptus moth traps within 0-10 meters of the light source can effectively kill adult eucalyptus moths in the forest and directly reduce their population.

[0029] Example 3

[0030] Specific steps for implementing forest trapping:

[0031] Step 1: Prepare a 1000-watt high-pressure mercury lamp with a light intensity of 300 Lux and a 6-watt ultraviolet LED lamp with a light intensity of 65 Lux as light sources. The wavelength of the 1000-watt high-pressure mercury lamp is 400-700 nm, and the wavelength of the 6-watt ultraviolet LED lamp is 380-400 nm.

[0032] Step 2: Prepare a power supply in advance that can drive the light source.

[0033] Step 3: At the trapping site, select a relatively open location to set up the light source. Use a strong 1000-watt high-pressure mercury lamp, 4-7 meters above the ground, directly facing the forest stand severely damaged by the eucalyptus moth. Use a weak 6-watt ultraviolet LED lamp, also directly facing the forest stand severely damaged by the eucalyptus moth, and place multi-branched branches under the lamp for the eucalyptus moths to perch on.

[0034] Step 4: At 19:30 at dusk, turn on the 1000-watt high-pressure mercury lamp for 30 minutes.

[0035] Step 5: Turn off the 1000-watt high-pressure mercury lamp and turn on the 6-watt ultraviolet LED lamp at the same time to induce induction for 30 minutes.

[0036] Step 6: Count the number of adult eucalyptus moths attracted within a 25m radius of the light source.

[0037] As can be seen from the above embodiments, this invention utilizes the light-attracting method described in the present invention to achieve highly efficient light-attracting of insects with weak phototaxis, such as the eucalyptus bat moth, based on their photosensitive characteristics.

[0038] Those skilled in the art should understand that the above description is merely a specific example of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A highly efficient method for attracting insects attracted to weak light using light, characterized in that, Includes the following steps: (1) During the normal photoperiod, the light around 19:30 at dusk can stimulate their sexual behavior; (2) When the low-light insects exhibit sexual behavior at 19:30 during the normal photoperiod, strong light stimulation inhibits their sexual behavior; (3) Turning off the strong light and creating a dark environment at night stimulates the sexual behavior of the eucalyptus moth; (4) Simultaneously turning on the weak light can stimulate the phototaxis of the low-light insects, thereby achieving the attraction of the low-light insects by light; The strong light intensity must be greater than the maximum light intensity preferred by the low-light insects, and the strong light intensity of the eucalyptus moth is greater than 8 Lux; The strong light irradiation time is such that the light intensity of the night sky is lower than the maximum light intensity preferred by the low-light insects, and the eucalyptus moth is irradiated with strong light for 30 minutes to meet this requirement; The source of both the strong light and the weak light is directly facing the area with a high density of low-light insects.

2. The efficient light-attracting method for insects attracted by weak light as described in claim 1, characterized in that, The weak light is a weak ultraviolet light.

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