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WO2025140786A1 - Composition et procédé pour influer sur le lieu de résidence de coléoptères du bois - Google Patents

Composition et procédé pour influer sur le lieu de résidence de coléoptères du bois Download PDF

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Publication number
WO2025140786A1
WO2025140786A1 PCT/EP2024/000066 EP2024000066W WO2025140786A1 WO 2025140786 A1 WO2025140786 A1 WO 2025140786A1 EP 2024000066 W EP2024000066 W EP 2024000066W WO 2025140786 A1 WO2025140786 A1 WO 2025140786A1
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WO
WIPO (PCT)
Prior art keywords
polymer
beetles
dispersions according
dispersions
wood
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Application number
PCT/EP2024/000066
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German (de)
English (en)
Inventor
Ulrich S. Schubert
Stephanie Schubert
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Friedrich Schiller Universtaet Jena FSU
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Friedrich Schiller Universtaet Jena FSU
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Application filed by Friedrich Schiller Universtaet Jena FSU filed Critical Friedrich Schiller Universtaet Jena FSU
Publication of WO2025140786A1 publication Critical patent/WO2025140786A1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N27/00—Biocides, pest repellants or attractants, or plant growth regulators containing hydrocarbons
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N35/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical
    • A01N35/06—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical containing keto or thioketo groups as part of a ring, e.g. cyclohexanone, quinone; Derivatives thereof, e.g. ketals

Definitions

  • the invention relates to the field of controlling the location of wood-dwelling beetles by means of messenger substances and compositions suitable therefor.
  • the common woodworm (Anobium punctatum) is also known as a woodworm.
  • tree pests include the Asian longhorn beetle (Anoplophora glabripennis). Bark beetles are among the most important pests of living wood. These include the European spruce bark beetle (Ips typographus), which can cause significant damage, particularly in managed spruce forests. Bark beetles are also dangerous in natural forests.
  • the mountain pine beetle (Dendroctonus ponderosae), for example, has considerable destructive potential. Damage caused by beetle infestations has significant economic impacts on agriculture and forestry.
  • beetles play an important role in the natural ecosystem. Humans also benefit from some species. Among the most important of these are predatory beetles, such as ground beetles, rove beetles, and especially ladybugs. These species consume harmful insects, mites, and slugs in agriculture and forestry. Certain ladybug species are bred in large numbers for use against agricultural pests. These leaf- and scale-eating beetles are also useful in gardens.
  • Messenger substances are chemicals that serve for signal transmission or chemical communication. They can exert their effects within an organism, between individuals of a species, or between different species. Messenger substances belong to a wide variety of chemical compound classes. Many of these are peptides, steroids, amino acid derivatives, isoprene derivatives, terpene derivatives, aldehydes such as benzaldehyde or salicylaldehyde, or acids such as benzoic acid.
  • the following description of the invention is based on the example of the bark beetle.
  • the bark beetle (known in Germany as the "spruce bark beetle” especially when it infests spruce trees (there are currently over 6,000 known species of bark beetle, all subspecies of the weevil)) is causing extreme losses of forest area worldwide. Since spruce has been planted on a large scale as a monoculture for around 200 years, particularly in Central Europe, there is currently an intensive infestation, particularly in the Harz Mountains, the Ore Mountains and the Bavarian Forest, but now also in Austria, Italy and the Czech Republic.
  • traps are not suitable for significantly reducing a bark beetle population. Traps are primarily used to register infestations. The use of killing traps is also questionable for all beneficial insects.
  • insecticides such as the approved products Fastac Forst or Karate Forst, is prohibited because they also kill enemies of the bark beetle, such as the ant beetle.
  • insecticides only a very small proportion of insecticides are effective against the bark beetle ( ⁇ 0.1%). The majority of the chemicals are blown away during spraying, drip from the bark, are emitted as dust, or are released too early.
  • bark beetles Another measure for controlling bark beetles involves the use of messenger substances.
  • the bark beetle (as a prominent example of other proboscideans, such as the copperplate engraver), especially the "spruce bark beetle," which attacks Norway spruce in Central Europe, works with a mixture of messenger substances (modified spruce building blocks, pheromones, and other information chemicals) that are used to attract or repel other bark beetles.
  • a healthy spruce can fight a bark beetle by using resin. When spruce trees are weakened by drought, heat, damage from storms/hurricanes, or snow damage, their defenses are reduced.
  • the messenger method is used very intelligently for this purpose. Initial infestations of a spruce tree release mixtures of messenger substances that attract additional bark beetles (e.g., verbenol, ipsenol, or other terpenes). Even healthy spruce trees can no longer resist an infestation of hundreds or more bark beetles. The spruce's "occupiers” then switch mode and release new mixtures of messenger substances that signal that the tree is "full.” Additional bark beetles then infest surrounding spruce trees. This is how "nests" form.
  • additional bark beetles then infest surrounding spruce trees. This is how "nests" form.
  • a new bark beetle population can then travel distances of 500 meters, and sometimes (with favorable winds) even several kilometers, thus killing entire forest areas in the immediate vicinity of the "nests" and simultaneously forming new “nests” farther away.
  • the bark beetles begin to migrate when average air temperatures reach 16.5°C; however, with suitable sunlight, a local migration can begin earlier.
  • up to three populations and thus bark beetle flights can develop, causing tremendous damage and devastation, almost like an "atom bomb.”
  • Conventional forestry cannot remove the infested wood, even in easily accessible regions. quickly enough - not to mention low mountain ranges and the Alpine regions.
  • the messenger substances of the bark beetles also attract enemies (such as the ant beetle, the scorpion beetle, and the chalcid wasp; there are approximately 300 natural enemies of the bark beetle). However, when the beetles reproduce explosively, the enemies are unable to counteract them.
  • US 2017/0354596 A1 describes a nanoemulsion comprising water as a dispersant and a dispersed oil phase.
  • the oil phase contains at least one hydrophobic active ingredient combined with a hydrophobic polymer that may be biodegradable.
  • the dispersed phase also contains an amphiphilic chitosan derivative that is aggregated with a fatty acid through ionic interaction.
  • the nanoemulsions can be used to produce liquid formulations for medical applications. Halahlah, A. et al., in an article entitled “Synthesis and characterization of inclusion complexes of rosemary essential oil with various betacyclodextrins and evaluation of their antibacterial activity against Staphylococcus aureus”, J. Drug Deliv. Sci. Tec., Vol. 65, 102660 (2021), describe the encapsulation of selected oils for antibacterial use.
  • beetles are understood to mean the adult beetles (imago), including their larvae and pupae.
  • the dispersion according to the invention is preferably used to influence the location of the adult beetles and/or their predators.
  • the dispersions according to the invention are preferably used to attract wood-dwelling beetles, which are beneficial or pests, or to attract predators of the beetle pests.
  • the dispersions according to the invention are also preferably used to repel wood-dwelling beetles, which are pests. These are thereby driven to targeted collection points or "firebreaks" are created that the beetles cannot overcome.
  • the dispersions according to the invention are preferably used to influence the location of beetles living on, at or in trees or on or in the ground area of trees.
  • Tree-dwelling beetles are preferably weevils, particularly bark beetles and especially preferred are spruce bark beetles (Ips typographus), copperplate engraver beetles (Pityogenes chalcographus), large and small wood bark beetles, oak bark beetles, striped timber bark beetles (Trypodendron lineatum) or black timber bark beetles (Xyleborus germanus).
  • the dispersions according to the invention can be in the form of suspensions (solid particles or aggregates dispersed in an aqueous dispersion medium) or emulsions (liquid particles or aggregates dispersed in an aqueous dispersion medium).
  • the polymer particles or the polymer-based aggregates are generally present as nano- or microparticles or aggregates. These are therefore particles or aggregates composed of finely dispersed polymers or finely dispersed components, in particular of finely dispersed polymeric solids or of finely dispersed polymeric hydrogels.
  • the dispersions according to the invention can also be present in "green” solvents, e.g., Cyrene, produced from cellulose.
  • microparticles or microaggregates are understood to mean particles or aggregates which have diameters (z-average) of at least 1 pm as determined by means of dynamic light scattering.
  • Preferred particle diameters (z-average) for microparticles or microaggregates are in the range of greater than or equal to 5 pm, particularly preferably between 10 and 200 pm, and most preferably between 20 and 50 pm.
  • the dispersions according to the invention can further be characterized by their polydispersity index (or PDITG).
  • the polydispersity index of the particle size distribution (PDITG) indicates the breadth of the particle size distribution. Values between 0 (monodisperse) and 1 (polydisperse) can be assumed.
  • the PDITG value is determined by dynamic light scattering (DLS) using a Malvern Zetasizer Ultra (Malvern Instruments, Worcestershire, United Kingdom).
  • the PDITG was determined by cumulant analysis of the correlation function.
  • the PDI T G value of the particle size distribution of the nano- and microparticles or nano- or microaggregates used according to the invention typically ranges between 0.05 and 0.8, preferably between 0.1 and 0.7 and particularly preferably between 0.05 and 0.6.
  • Nanoparticles or nanoaggregates are particularly preferably used according to the invention. These have diameters (z-average) determined by DLS between 40 and 250 nm, most preferably between 50 and 200 nm, and a PDITG between 0.05 and 0.2.
  • the dispersions according to the invention may contain stabilizers that prevent or delay sedimentation of the disperse phase.
  • Surfactants and/or protective colloids can be used. Such measures are known to those skilled in the art.
  • the dispersions according to the invention may contain oils as additives.
  • oils include olive oil, sunflower oil, rapeseed oil, or other vegetable or animal oils. Such measures are known to those skilled in the art.
  • polymers are used as carriers for the messenger substances.
  • the messenger substance is intended to be released from the micro- or nanoparticle only at a temperature and/or ambient humidity selected by the user and/or upon exposure to light.
  • the release can be controlled by selecting the polymer, its degree of crosslinking, its molecular structure, or the additives.
  • This polymer has at least one temperature-dependent or humidity-sensitive parameter that influences the rate of release of the messenger substance or messenger cocktail combined with the polymer.
  • the temperature-dependent parameter can be adjusted, for example, by producing specially adapted copolymers with a tailored glass transition temperature, melting temperature, crystallinity, or hydrophobic/hydrophilic balance, or by adjusting the additives used or the manufacturing method.
  • the polymer should be biodegradable at the site of use, for example, in (forest) soil.
  • polymers that are stable for a longer period under the conditions of the site of use can also be used.
  • Polymers used according to the invention can be used in their pure form or in the form of polymer blends.
  • the latter include, in particular, supramolecular polymers, i.e. polymers whose building blocks are held together not by covalent bonds, but by comparatively weak intermolecular bonds. These bonds include hydrogen bonds, ionic bonds, metal-ligand interactions, van der Waals interactions, or hydrophobic interactions.
  • These intermolecular bonds can be easily broken at elevated temperatures and can They also quickly reform upon cooling. The temperature at which intermolecular bonds break can be adjusted by selecting the type and quantity of these bonds.
  • PLA Polylactides
  • PLA include polymers composed of chemically bonded lactic acid monomers.
  • PLA is a thermoplastic.
  • PLA is preferably tailored to the specific application through compounding.
  • the resulting "PLA blends" typically consist of PLA, other biodegradable plastics, and additives.
  • PLA can also be modified by copolymerization with other monomers, for example, to achieve a desired glass transition temperature.
  • the starches used in the invention are polysaccharides consisting of ⁇ -D-glucose units. Enzymes such as ⁇ - or ⁇ -amylases can break down starch, resulting in dextrins or disaccharides. When exposed to heat, starch can physically bind, swell, and gelatinize with many times its own weight in water. Starches can be linear or branched. Modified starches can also be used within the scope of the present invention. These are starch products obtained by physical, enzymatic, or chemical processes.
  • polymers preferably used according to the invention include polyesters, polyesteramides or polyamides.
  • Preferred polyesters are derived from aliphatic dicarboxylic acids and alkylene glycols or are copolyesters derived from aromatic and aliphatic dicarboxylic acids and alkylene glycols. Examples are poly(butylene adipate-co-terephthalate) (PBAT), polybutylene succinate (PBS), poly(ethylene adipate-co-terephthalate) and polyethylene succinate.
  • PBAT poly(butylene adipate-co-terephthalate)
  • PBS polybutylene succinate
  • poly(ethylene adipate-co-terephthalate) polyethylene succinate
  • Preferred polyesteramides are derived from aliphatic dicarboxylic acids, alkylene glycols, and aliphatic diamines or aliphatic lactams.
  • An example is a polyesteramide derived from e-caprolactam, adipic acid, and 1,4-butanediol.
  • Preferred polyamides are derived from aliphatic dicarboxylic acids and aliphatic diamines or from aliphatic aminocarboxylic acids or from aliphatic lactams.
  • Polymers preferably used according to the invention have a specifically adjusted glass transition temperature. This can be achieved by selecting the type and amount of monomers used in the polymerization.
  • the glass transition temperatures of copolymers can be estimated using the Fox equation. This is an equation describing the glass transition temperature of mixtures with multiple components as a function of the respective mass fractions of these components. This procedure is known to those skilled in the art.
  • Polymer blends preferably used according to the invention are characterized in that their polymeric components are held together by intermolecular bonds that dissolve at a predetermined temperature.
  • These polymer blends include those containing polymers capable of forming hydrogen bonds, ionic bonds, or metal-ligand interactions.
  • messenger substances are combined with polymers as carriers.
  • the carrier is selected such that the messenger substance is only released at a user-selected temperature and/or ambient humidity or at a corresponding solar radiation intensity, or is released in a distributed manner over a longer period of time.
  • Allelochemicals are divided into allomones, which benefit the sender, kairomones, which benefit the receiver, and synomones, which benefit both.
  • systems based on preferably biodegradable polymer systems can be used which release suitable messenger substances in a delayed manner in order to attract forest pests such as weevils, in particular bark beetles, to decoy wood in order to destroy them there, for example by attracting natural enemies, and/or by co-formulating the messenger substances with insecticides, and/or by removing the bark.
  • forest pests such as weevils, in particular bark beetles
  • systems based on preferably biodegradable polymer systems can also be used, which release suitable messenger substances with a delay in order to lure forest pests, such as weevils, in particular bark beetles, into decoy wood, so that they can be made harmless by spatially removing the decoy wood.
  • systems based on preferably biodegradable polymer systems can be used, which release suitable messenger substances with a delay in order to keep forest pests such as weevils, especially bark beetles, away from certain habitats.
  • Pheromones can create “firebreaks” that delay or prevent the spread of forest pests, or forest pests can be guided to decoy wood, traps or predators by releasing defensive pheromones.
  • systems based on preferably biodegradable polymer systems can be used which release suitable messenger substances with a delay in order to attract beneficial insects, such as ladybirds, to a desired location in order to be able to use them there in a targeted manner.
  • the release behavior of the messenger substance can be adjusted by selecting the polymer, producing specially adapted copolymers with tailored glass transition temperature, melting temperature, crystallinity, hydrophobic/hydrophilic balance, or (bio)degradability, such as enzymatic degradation or hydrolysis. This can be supported by the appropriate addition of inorganic excipients, synthetic or bio-based excipients, or oils.
  • a specifically adaptable "messenger substance cocktail” can be applied.
  • the messenger substances can be adapted regionally or adapted to the variations for the different infestation periods (larvae, small beetles, adult beetles, sex) as well as to the infestation rounds (spring, summer, fall).
  • the messenger substances can be specifically adapted to the corresponding habitat, for example to different tree species such as spruce, pine or larch.
  • the messenger substances can also be adapted to the regionally present or attractable beetle pests, e.g. ant beetles, bracken flies or chalcid wasps.
  • the messenger substances can also be combined with essential oils.
  • the messenger substances can be used to stimulate beetle pests to infest decoy wood or to create firebreaks to prevent beetle infestation.
  • decoy wood is particularly useful in the early stages of a beetle infestation.
  • firebreaks is especially useful when the beetle infestation has already reached an acute stage and further spread must be prevented at all costs.
  • the dispersions are preferably in the form of aqueous suspensions of nano- or microparticles or micelles or vesicles or nanocapsules/nanospheres or microcapsules/microspheres and are particularly stabilized by surfactants and/or protective colloids.
  • DTS1070 capillary cuvettes (Malvern Panalytical) were used for ELS studies, with 10 pL of the particle suspension diluted 1x with 990 pL of Milli-Q or PBS.
  • DSC/TGA and STA measurements were performed on a 449 F1 Jupiter® (Netzsch). Mass spectrometry was performed on a QMS 403 D Aeolos® from Netzsch.
  • FTIR measurements were performed on a TENSOR 27 (Bruker).
  • the IKA T10 basic from Ultra Turrax was used for the formulations.
  • the Sonorex ultrasonic bath from Bandelin was used for resuspension.

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  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

L'invention concerne des dispersions contenant des particules polymères ou des nano- ou micro-agrégats à base de polymères, qui sont chargées d'au moins une substance messagère destinée à attirer ou à chasser une espèce de coléoptère vivant dans le bois prédéterminée ou à attirer un prédateur pour cette espèce de coléoptère et éventuellement d'autres adjuvants et additifs, le polymère présentant au moins un paramètre spécifique au polymère sélectionné dans le groupe de la température de transition vitreuse, de la température de fusion des cristallites, des interactions supramoléculaires, de l'humidité de l'air, de l'action de la lumière ou de la dégradabilité ciblée, qui varie dans une plage de températures et/ou une plage d'humidité prédéterminée, de sorte que le messager contenu dans les particules soit libéré ou que le polymère ou le nano- ou micro-agrégat à base de polymères soit dégradé par voie enzymatique ou hydrolytique, de manière que le messager contenu dans les particules soit libéré. Ces dispersions peuvent notamment être utilisées pour lutter contre les bostryches.
PCT/EP2024/000066 2023-12-27 2024-12-21 Composition et procédé pour influer sur le lieu de résidence de coléoptères du bois Pending WO2025140786A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023005372.4A DE102023005372A1 (de) 2023-12-27 2023-12-27 Zusammensetzung und Verfahren zur Beeinflussung des Aufenthaltsorts von Holz bewohnenden Käfern
DE102023005372.4 2023-12-27

Publications (1)

Publication Number Publication Date
WO2025140786A1 true WO2025140786A1 (fr) 2025-07-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/000066 Pending WO2025140786A1 (fr) 2023-12-27 2024-12-21 Composition et procédé pour influer sur le lieu de résidence de coléoptères du bois

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Country Link
DE (1) DE102023005372A1 (fr)
WO (1) WO2025140786A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3543297A1 (de) * 1984-12-10 1986-06-12 Celamerck Gmbh & Co Kg, 6507 Ingelheim Mittel zur bekaempfung von borkenkaefern
WO1990009104A1 (fr) * 1989-02-09 1990-08-23 John Byers Procede d'inhibition de coleopteres de l'ecorce d'epicea
DE68923969T2 (de) * 1988-05-09 1996-05-09 John Byers Methode zur Abwehr von Borkenkäfern.
WO2016063119A1 (fr) * 2014-10-21 2016-04-28 Universitá Degli Studi Di Pavia Nanoémulsions huile-dans-eau

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3543297A1 (de) * 1984-12-10 1986-06-12 Celamerck Gmbh & Co Kg, 6507 Ingelheim Mittel zur bekaempfung von borkenkaefern
DE68923969T2 (de) * 1988-05-09 1996-05-09 John Byers Methode zur Abwehr von Borkenkäfern.
WO1990009104A1 (fr) * 1989-02-09 1990-08-23 John Byers Procede d'inhibition de coleopteres de l'ecorce d'epicea
WO2016063119A1 (fr) * 2014-10-21 2016-04-28 Universitá Degli Studi Di Pavia Nanoémulsions huile-dans-eau
US20170354596A1 (en) 2014-10-21 2017-12-14 Universita' Degli Studi Di Pavia Oil-in-water nanoemulsions

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
HALAHLAH, A. ET AL.: "Synthesis and characterization of inclusion complexes of rosemary essential oil with various betacyclodextrins and evalutation of their antibacterial activity against Staphylococcus aureus", J. DRUG DELIV. SCI. TEC., vol. 65, 2021, pages 102660
LI YAN-YAN ET AL: "Preparation and evaluation of attractive microspheres for control of Agrilus planipennis fairmaire", JOURNAL OF ENVIRONMENTAL SCIENCES AND HEALTH B: PESTICIDES., vol. 58, no. 2, 1 February 2023 (2023-02-01), pages 131 - 138, XP093270520, ISSN: 0360-1234, Retrieved from the Internet <URL:https://www.tandfonline.com/doi/pdf/10.1080/03601234.2023.2172285> DOI: 10.1080/03601234.2023.2172285 *
LI, Y. Y.: "Preparation and evaluation of attractive microspheres for control of Agrilus planipennis faimaire", J. ENVIRON SCI.HEALTH B, vol. 58, no. 2, 2023, pages 131 - 138
VON EL-SAID AZZAZY, H.M.: "extracted from Boswellia sacra Oleo Gum resin loaded into PLGA-PCT Nanoparticle: Enhanced Cytotoxic and Apoptoxic Effects against Breast Cancer Cells", ACS OMEGA, vol. 8, no. 1, 2023, pages 1017 - 1025

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