RU2384054C1 - Method for attraction of mosquitos by optical radiation - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: method includes application of colour stimulus of insects. Coordinates of colour for radiation that attracts mosquitoes are established depending on measured temperature of ambient air in compliance with expressions

where x_opt and y_opt are optimal coordinates of colour for radiation that attracts mosquitoes, accordingly, x and y on colour diagram MKO 31; θ_a - temperature of ambient air, °C.

EFFECT: such technology will make it possible to improve efficiency of fish additional feeding.

1 dwg

Description

The invention relates to the field of fish farming, in particular to the enrichment of ponds with chironomid larvae as a live feed for fish, and can be used in fish farms when growing salable fish.

A known method of attracting living organisms by optical radiation, implemented in a device for concentrating phyto- and zooplankton / 1 /, for attracting which is carried out stepwise regulation of the illumination and color of the radiation of the light source using apertures and filters.

The disadvantage of this device is the inability to smoothly control the color of the attracting radiation, low efficiency of attracting living organisms.

There is also a method of attracting flying insects with a mixture of optical radiation with different colors, the sources of which are made in the form of series-connected incandescent lamps and fluorescent lamps in the device / 2 /.

The disadvantage of this method is the inability to control the color of the attracting radiation, the optimal color of the radiation is not taken into account in terms of positive phototaxis for mosquitoes, low efficiency of attracting mosquitoes.

Closest to the proposed invention is a method of attracting mosquitoes using a color stimulus of insects with a mixture of red radiation (with a dominant wavelength λ _D = 624 nm), green (λ _D = 522 nm), blue (λ _D = 469 nm) and ultraviolet light emitting diodes tuned to the optimal chromaticity coordinates x = 0.22943 and y = 0.23662 on the color scheme MKO 31, which correspond to the maximum attracting effect for insects / 3 /.

The disadvantage of this method is that it does not take into account the influence of ambient temperature on the optimal chromaticity coordinates of the radiation attracting mosquitoes, the underutilization of the color stimulus of the light source on mosquitoes, as a result of the low efficiency of their attraction.

The present invention solves the problem of increasing the efficiency of feeding fish by increasing the number of chironomids in fishery ponds by optimizing the color of the radiation attracting mosquitoes depending on the ambient temperature.

This problem is solved in that the optimal chromaticity coordinates of the radiation attracting mosquitoes are regulated depending on the ambient temperature in accordance with the expressions

where X _OPT and _OPT are the optimal chromaticity coordinates of the radiation attracting mosquitoes, respectively x and y on the color scheme MKO 31;

θ _В - ambient temperature, ° С.

The invention is illustrated by the diagram shown in the drawing.

For the temperature range of active mosquito summers into the light of 14 ... 38 ° С, the optimal chromaticity coordinates vary within Δх = 0.5330 ... 0.1862; Δy = 0.3073 ... 0.1437 along curve 1, respectively, from point 2 to point 3 shown in the drawing.

In accordance with the electrotechnology of feeding fish with chironomid larvae, mosquitoes attracted by optical radiation fly up to its source located above the water surface and fall on a floating frame, on which a mowed ground vegetation is laid in a thin layer. The floating frame creates favorable conditions for mosquitoes to lay eggs, from which chironomid larvae hatch after 2-3 days. They become food for fish.

When implementing the proposed method, the ambient temperature is measured, the chromaticity coordinates of the radiation attracting mosquitoes are determined using expressions (1), and the color of the optical radiation sources is set in accordance with the found optimal chromaticity coordinates.

For example, for an ambient temperature of 20 ° С, the optimal chromaticity coordinates of the radiation attracting mosquitoes will be equal

The given color coordinates in the drawing correspond to point 4.

To obtain comparative data, the known method for attracting mosquitoes by optical radiation, implemented in the installation / 3 /, was investigated. The proposed method allows to attract optical mosquitoes a greater number of mosquitoes by 21 ... 33% compared with the prototype, depending on meteorological and climatic conditions. Thus, the application of the proposed method for attracting mosquitoes by optical radiation can significantly increase the number of chironomids in fishery ponds, thereby significantly increasing the efficiency of feeding fish.

Information sources

1. Auto USSR No. 824920, A01K 61/00, 1979

2. Auto USSR No. 1722343, IPC ⁵ A01M 1/08, 1990

3. Patent of the Russian Federation C 12250609 RU 7, А01К 61/00, No. 2004109737/12, publ. 04/27/2005 (prototype).

Claims (1)

A method of attracting mosquitoes by optical radiation using an insect color stimulus, characterized in that the chromaticity coordinates of the radiation attracting mosquitoes are set depending on the measured ambient temperature in accordance with the expressions

where x _opt and y _opt are the optimal chromaticity coordinates of the radiation attracting mosquitoes, respectively x and y on the color scheme of the MCO 31;
θ _a - ambient air temperature, ° C.

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