CZ2010735A3 - Insect trap with attractant of natural substrate - Google Patents

Abstract

The present invention relates to an insect trap with a natural substrate attractant. The attractant is formed from at least 0.01 wt. vacuum-evaporated filtered extract from a natural substrate obtained from a food material dissolved by a solvent based on organic solvents or ethyl alcohol, further from water and at least 0.1 wt. detergent, wherein the attractant is placed in at least two dishes of different color, the depth of which is at least 1 cm and the volume is at least 500 ml.

Description

Insect trap with attractant from natural substrate

Technical field

The invention relates to a bowl insect trap with attractant from natural substrates suitable for taxonomic and faunistic studies.

BACKGROUND OF THE INVENTION

Double-winged insects, such as flies, are among the largest and most important insect groups. For his studies in nature and catching were designed various types of traps from known flytraps, vessels (bowls) with water attracting flies either color or shape, or equipped with a variety of baits to very complex equipment.

The most common way of monitoring and, at the same time, the closest proposed solution are water bowls attracting mainly anthophilic forms on the basis of the flower superstimulus. However, this considerably limits the spectrum of captured insect species. The range of industrially produced and commercially available attractants is wide - from pheromones to mixtures containing olfactorically attractive substances (eg tertiary amines, indole, skatol, etc.). However, these preparations are expensive, often carcinogenic, and often less attractive than the food or opposition substrates themselves.

SUMMARY OF THE INVENTION

These drawbacks are overcome by the attractant trap with the attractant from the natural substrate according to the invention, which is characterized in that the attractant is formed of at least 0.01% by weight. a vacuum-evaporated filtered natural substrate extract obtained from a solvent-based food material based on organic solvents or ethyl alcohol, water and at least 0,1% by weight of detergent, the attractant being placed in at least two bowls of different color, depth at least 1 cm and the volume is at least 500 ml.

The trap according to the invention is characterized in that the substrate for the production of the extract consists mainly of rotting meat or fermenting fruit and yeast.

The trap according to the invention is further characterized in that the attractant contains at most 1 wt. % of the extract and at most 5 wt. detergent.

The trap according to the invention is further characterized in that the tray has a maximum volume of 1000 ml and its edge length is at most 250 mm or its diameter is at least 50 mm.

The trap according to the invention is suitable for catching a broad species composition of double-winged insects and the attractant used ensures long-term stability of captured individuals, which is particularly suitable not only for quantitative but above all for qualitative taxonomic and faunistic studies. This trap was successfully tested in experiments at the Research Institute of Animal Production, vv.i., Prague - Uhříněves, CZ and at the Czech University of Life Sciences Prague, CZ.

The following embodiment illustrates the trap according to the invention without limiting it.

Examples

Example 1

The substrate from a mixture of 250 g raw minced meat, 500 ml water and 10 g yeast was kept at 18-23 ° C for at least 5 days. An equal volume of ethyl alcohol was then poured onto the substrate and filtered after stirring. The filtrate was poured into a vacuum evaporator flask and the excess ethyl alcohol was evaporated. The obtained concentrate (extract) of about 50 ml was poured into a 10 liter canister, to which 20 ml of detergent was added and the canister was filled with water.

Varicoloured bowls (for a given volume of attractant - 10 l - or, depending on the design, about 30 bowls) with the attractant filled to about half the height of the bowl (but not more than 2 cm) were placed in the examined environment After 24 hours, the contents of the bowl were sliced through a tea strainer into a collection container and the insects obtained were evaluated and partially preserved for study.

Example 2

The substrate from a mixture of 500 g of fruit (eg a mixture of grapes and bananas), 500 ml of water and 10 g of yeast was left at 18 to 23 ° C for 10 days. An equal volume of ethyl alcohol was then poured onto the substrate and filtered after stirring. The filtrate was poured into a vacuum evaporator flask and the excess ethyl alcohol was evaporated. The obtained concentrate (extract) of about 50 ml was poured into a 10 liter canister, to which 20 ml of detergent was added and the canister was filled with water. Multicolored bowls (for a given volume of attractant - 10 I - possibly according to the design about 30 bowls) with an attractant filled to about half the height of the bowl (but not more than 2 cm) were placed in the examined environment After 24 hours, the contents of the bowl were sliced through a tea strainer into a collection container and the insects obtained were evaluated and partially preserved for study.

Industrial applicability

The insect trap with attractant from a natural substrate allows to capture a wide species spectrum of double-winged insects and its partial conservation, which is particularly advantageous in qualitative taxonomic and faunistic studies.

Claims (4)

PATENT CLAIMS An insect trap with an attractant from a natural substrate, characterized in that the attractant is formed of at least 0.01 wt. a vacuum-evaporated filtered natural substrate extract obtained from a solvent-based food material based on organic solvents or ethyl alcohol, water and at least 0,1% by weight of detergent, the attractant being placed in at least two bowls of different color, depth at least 1 cm and the volume is at least 500 ml. Trap according to claim 1, characterized in that the substrate for the production of the extract consists mainly of rotting meat or fermenting fruit and yeast. The trap according to claim 1, characterized in that the attractant contains at most 1 wt. % of the extract and at most 5 wt. detergent. The trap according to claim 1, characterized in that the tray has a maximum volume of 1000 ml and its edge length is at most 250 mm or its diameter is at least 50 mm.