CZ306530B6 - An insect trap with an attractant made of a natural substrate - Google Patents

Abstract

The solution deals with the insect trap with an attractant made of a natural substrate. The attractant comprises water, further at least 0.01t% of weight of a vacuum vaporised filtered extract of the natural substrate which was obtained from a food material dissolved by a solvent based on organic solvents or ethanol, and further the attractant comprises at least 0.1% of weight of a detergent, while the attractant is located in at least two bowls of a different colour, whose depth is at least 1 cm and volume of at least 500 ml. This trap allows capture of a wide variety of species of the dipterous insect and its partial preservation, which is particularly advantageous at the qualitative taxonomic and faunistic studies.

Description

Insect trap with an attractant made of natural substrate

Field of technology

The invention relates to an insect trap with an attractant made of natural substrates suitable for taxonomic and faunal studies.

Prior art

Two-winged insects, such as flies, are among the largest and most important groups of insects. For his studies in nature and captures, various types of traps were designed, from well-known fly traps, through containers (bowls) with water attracting flies, either by color or shape, or equipped with various baits to very complex devices.

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

The essence of the invention

These disadvantages are eliminated by an insect trap with an attractant from the natural substrate according to the invention, the essence of which consists in the fact that the attractant contains water, furthermore at least 0.01% by weight. a vacuum-evaporated filtered extract of a natural substrate obtained from a food material dissolved in a solvent based on organic solvents or ethyl alcohol, and further comprising an attractant of at least 0.1% by weight. detergent, the attractant being placed in at least two bowls of different colors, at least 1 cm deep and at least 500 ml in volume.

The trap according to the invention is characterized in that the food material for the production of the extract contains in particular rotting meat and yeast or fermenting fruit and yeast.

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

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

The trap according to the invention is suitable for capturing a wide species composition of two-winged insects and the attractant used ensures long-term stability of captured individuals, which is particularly suitable not only for quantitative, but especially for qualitative taxonomic and faunal studies. This trap was successfully tested during experiments at the Research Institute of Animal Production, v.v.i., Prague Uhříněves, CZ and at the Czech University of Life Sciences in Prague, CZ.

The following exemplary embodiments only illustrate the catcher according to the invention, without limiting it.

Examples of embodiments of the invention

Example 1

The substrate from a mixture of 250 g of raw minced meat, 500 ml of water and 10 g of yeast was left at a temperature of 18 to 23 ° C for at least 5 days. An equal volume of ethyl alcohol was then added to the substrate and filtered after mixing. The filtrate was poured into a vacuum evaporator flask and the excess ethyl was evaporated

- 1 CZ 306530 B6 alcohol. The obtained concentrate (extract) with a volume of about 50 ml was poured into a 10 liter canister, 20 ml of detergent was added and the canister was filled with water. Multicolored dishes (for a given volume of attractant - 10 1 - or according to the design about 30 dishes) with attractant filled to about half the height of the dish (but not more than 2 cm) were placed in the examined environment in a line (circle) at distances of 5 to 10 m After 24 hours, the contents of the dish were poured through a tea strainer into a collection vessel, and the insects obtained were preserved there with 70% ethyl alcohol for further study.

Example 2

The substrate from a mixture of 500 g of fruit (e.g. a mixture of grapes and bananas), 500 ml of water and 10 g of yeast was left for 10 days at a temperature of 18 to 23 ° C. An equal volume of ethyl alcohol was then added to the substrate and filtered after mixing. The filtrate was poured into a flask for vacuum evaporators and the excess ethyl alcohol was evaporated. The obtained concentrate (extract) with a volume of about 50 ml was poured into a 10 liter canister, 20 ml of detergent was added and the canister was filled with water. Multicolored dishes (for a given volume of attractant - 10 1 - possibly according to the design about 30 dishes) with attractant filled to about half the height of the dish (but not more than 2 cm) were placed in the examined environment in a line (circle) at distances of 5 to 10 m After 24 hours, the contents of the dish were poured through a tea strainer into a collection vessel, and the insects obtained were preserved there with 70% ethyl alcohol for further study.

Industrial applicability

The insect trap with an attractant made of natural substrate enables the capture of a wide species spectrum of two-winged insects and their partial conservation, which is particularly advantageous in qualitative taxonomic and faunal studies.

Claims (4)

PATENT CLAIMS An insect trap with an attractant made of a natural substrate, characterized in that the attractant contains water, furthermore at least 0.01% by weight. a vacuum-evaporated preformed extract from a natural substrate, which has been obtained from a food material dissolved in a solvent based on organic solvents or ethyl alcohol, and further the attractant contains at least 0.1% by weight. detergent, the attractant being placed in at least two bowls of different colors, at least 1 cm deep and at least 500 ml in volume. Trap according to claim 1, characterized in that the food material for the production of the extract comprises in particular rotting meat and yeast or fermenting fruit and yeast. Trap according to claim 1, characterized in that the attractant contains at most 1% by weight. extract and a maximum of 5 wt. detergent. Trap according to claim 1, characterized in that the bowl has a maximum volume of 1000 ml and its edge length is at most 250 mm or its diameter is at least 50 mm.