WO2008104807A2 - Mite composition - Google Patents

Mite composition Download PDF

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Publication number
WO2008104807A2
WO2008104807A2 PCT/GB2008/050129 GB2008050129W WO2008104807A2 WO 2008104807 A2 WO2008104807 A2 WO 2008104807A2 GB 2008050129 W GB2008050129 W GB 2008050129W WO 2008104807 A2 WO2008104807 A2 WO 2008104807A2
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WO
WIPO (PCT)
Prior art keywords
composition
mite
population
host
composition according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/GB2008/050129
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French (fr)
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WO2008104807A3 (en
Inventor
Peter Ronald Smytheman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Certis Belchim BV
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Certis Europe BV
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Priority to AT08709649T priority Critical patent/ATE507721T2/en
Priority to PL08709649.1T priority patent/PL2124573T5/en
Priority to JP2009550323A priority patent/JP5349334B2/en
Priority to EP08709649.1A priority patent/EP2124573B2/en
Priority to CN2008800062532A priority patent/CN101677576B/en
Priority to KR1020097019969A priority patent/KR101516710B1/en
Priority to ES08709649T priority patent/ES2364699T5/en
Priority to DE602008006688T priority patent/DE602008006688D1/en
Application filed by Certis Europe BV filed Critical Certis Europe BV
Priority to DK08709649.1T priority patent/DK2124573T4/en
Publication of WO2008104807A2 publication Critical patent/WO2008104807A2/en
Publication of WO2008104807A3 publication Critical patent/WO2008104807A3/en
Priority to IL200253A priority patent/IL200253B/en
Anticipated expiration legal-status Critical
Priority to MA32233A priority patent/MA31263B1/en
Ceased legal-status Critical Current

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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
    • A01N63/00—Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
    • A01N63/10—Animals; Substances produced thereby or obtained therefrom
    • A01N63/16—Arachnids
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K67/00—Rearing or breeding animals, not otherwise provided for; New or modified breeds of animals
    • A01K67/30—Rearing or breeding invertebrates

Definitions

  • the present invention relates to a mite composition, a method for rearing a mite, a rearing system, a use of the composition in biological pest control, and to a method of biological pest control.
  • Biological pest control is a component of an integrated pest management strategy in agriculture and is an alternative to treating crops with insecticides. It is described as the reduction of pest populations by natural enemies. Pests that affect plants and such have an impact on crop yield include aphids, caterpillars, thrips, mites, white-flies and slugs. Many commercial insectaries rear and market a variety of natural enemies, including predaceous mites, lady beetles, lacewings, praying mantids, and several species of parasitoids. For example, it is known to use a composition of a rearing population of predatory mite fed on a factitious host supported on a carrier in biological pest control.
  • Such a composition is often supplied in a housing having a predatory mite exit aperture.
  • the housing is placed on or adjacent to plants and the predatory mite exits the housing to prey on unwanted pests such as white-flies, thrips, spider mites and tarsonemid mites, Examples of such compositions are described in the literature, including WO2006057552 and WO2006071107 in the name of Koppert BV.
  • One example is the predaceous mite Phytoseiulus persimilis which is used for control of the two-spotted spider mite.
  • Another mite that has been used in pest control is Amblyseius cucwveris, a small predator that feeds on a wide range of small arthropod prey.
  • a problem for the manufacturers of mite compositions for use in biological pest control is finding an economical and easily bred host for predatory mites.
  • Different mite families and indeed different mite species have different characteristics and requirements, such as breeding temperature, life cycle, size which results in different behaviour when using the mite to serve as a food source for a predatory mite.
  • Other criteria which are important include the ability to live and thrive in an environment also suitable for the predatory mite, not to produce toxins which adversely affect the predatory mite, and to have a multiplication rate which does not lead to an overwhelming of the culture, but still is rapid enough to maintain a steady food supply for the predator which it supports, without its self being too rapidly eliminated.
  • the impact of the mite on the crop plants should be minimal. Another factors to consider include the allergenic properties of the mite as this causes problems in production and in products which are shaken over the crop.
  • the inventors have found that a host comprising species from the super family of Acaroidea, such the family Suidasiidae, e.g. Suidasia medanensis (Oudemans, 1924), or from the super family of Glycyphagoidea can be economically and easily bred.
  • a benefit of Acaroidea, especially Suidasia medanensis is that it is very small, and all life stages (adults, nymphs and eggs) of Acaroidea, especially Suidasia medanensis, are of a size which can be eaten by young and adult prey mites.
  • Such a host has been found particularly useful for rearing phytoseiid predatory mite species, such as Amblyse ⁇ us swirskii.
  • Amblyseius swirskii feeds on plant feeding mites such as spider mites, tarsonemid and eriophyid mites and a range of plant dwelling insects.
  • mites such as spider mites, tarsonemid and eriophyid mites and a range of plant dwelling insects.
  • Amblyseius swirskii does not encounter mites from the family of Suidasiidae and Chortoglyphidae which are not plant dwelling species.
  • the invention relates to a mite composition
  • a mite composition comprising a breeding population of a predatory mite species, and a factitious host population comprising at least one species selected from the super family of Acaroidea, such as Suidasiidae or Acaridae or of the super family of Glycyphagoidea.
  • the invention relates to a composition
  • a composition comprising a population of a predatory mite and a host mite population selected from the family of Suidasiidae or Chortoglyphidae .
  • the population of the predatory mite and the host population are each preferably breeding populations, thus leading to an increase in the number of individuals present in the population.
  • the population comprises adults from both sexes and preferably individuals of other stages in the life cycle.
  • Mites as described herein are isolated from their natural environment and combined in the composition.
  • the host population comprises at least one species selected from the family Suidasiidae.
  • the preferred genus is Suidasi ⁇ .
  • the host species may be selected from Suidasia medanensis, S. medanensis, S. nesbitti , S. ponti ⁇ ca or S. reticulata.
  • the most preferred host species of the family Suidasiidae is Suidasia medanensis (Oudemans, 1924).
  • the host population comprises at least one species selected from the family Acaridae, such as of the genus Acarus, preferably Acarus gracilis (Hughes, 1957).
  • the host mite population is selected from the superfamily Glycyphagoidea, preferably from the family of Chortoglyphidae, such as the genus Chortoglypus.
  • the genus is Chortoglyhpus.
  • the species of the genus Chortoglyphus is Chortoglyphus arcuatus (Troupeau, 1879).
  • the host population may comprise a mixture of at least two different species, for example from the same genus or from different genera.
  • the composition may comprise a combination of Acarus gracilis, Suidasia medanensis and/or Chortoglyphus arcuatus.
  • Suidasia medanensis and/or Chortoglyphus arcuatus may also be combined with other known species, such as Carpoglyphus.
  • the breeding population of predatory mite species may be a phytoseiid predatory mite species such as Amblyse ⁇ us swirskii, Amblyseius cucumeris, Amblyseius andersoni or Ambfyseius californicus or Typhlodromus pyri.
  • the predatory mite is Amblyseius swirskii.
  • the composition may include combinations of the predatory mites listed above.
  • the invention relates to a composition
  • a composition comprising a population of Amblyseius swirskii and a host population of Su ⁇ dasia medanensis,
  • the invention relates to a composition
  • a composition comprising a population of Amblyseius swirskii and a host population of ' Chortoglyphus arcuatus.
  • the composition comprises a carrier for individuals of said populations.
  • the carrier may be bran flakes or wood chips or other similar organic materials, vermiculite or any other suitable light granular material.
  • the composition may further comprise a food substance suitable for the factitious host population.
  • the composition may further comprise an inert component such as vermiculite.
  • the number of individuals of the predatory mite species relative to the number of individuals of the factitious host is from about 100:1 to 1 :20, such as about 1 :1 to 1: 10, e.g. about 1 :4, 1:5 or 1: 7.
  • a skilled person would know that these amounts represent a general guide and that the exact dosage depends on the species used. As this is a living culture the precise ratios will vary over time as the food supply and prey species is consumed and the predator population multiplies. However, in general, the number of individuals of the host population should exceed that of the predatory mite.
  • the composition described herein can be used in a method for biological crop protection and biological pest control.
  • the use of the composition is particularly beneficial because it allows mass rearing of Amblyseius swirskii.
  • the host population in the composition is a factitious host and serves as a source of food for the predatory mite if other food sources are not available.
  • the composition and methods described herein can be used on crops such as vegetables, fruit crops, ornamental crops or tree crops, e.g. peppers, eggplants, cucumbers, melons, watermelons, strawberries, raspberries, roses, gerberas, chrysanthemums, or citrus trees or any other suitable crops.
  • the pest may be selected from white-flies, thrips, spider mites and tarsonemid mites.
  • a method for rearing or culturing a predatory mite such as Amblyseius swirskii, comprising providing a composition according to the invention and allowing individuals of the predatory mite to prey on individuals of said factitious population.
  • the method may further comprise maintaining the composition at 17-36 0 C and/or 59-96% humidity, e.g. 27 0 C and 85% humidity.
  • the composition may comprise a earner and a suitable food substance.
  • Another aspect of the present invention relates to use of Acaroidea, preferably of the family Suidasiidae preferably of the genus Suidasia, such as Suidasia medanensis, or Glycyphagoidea, preferably from the family of Chortoglyphidae, such as the genus Chortoglypus as a factitious host for rearing a predatory mite such as Amblyseius swirskii.
  • a device for rearing a predatory mite such as Amblyseius swirskii, comprising providing a container holding the composition according the present invention.
  • the container may comprise an exit for at least one mobile life stage of the predatory mite.
  • the exit may be suitable for providing a sustained and/or controlled release of the mite.
  • the container may be in the form of a sachet.
  • the exit may be an aperture in the sachet.
  • the sachet may include a hook to support the sachet on a plant.
  • a suitable delivery system is for example described in GB2393890.
  • the product may be distributed into the crop by being released into an artificial wind current, or dispensed from a rotating tube or similar dosing device.
  • Another aspect of the present invention relates to a method of biological pest control in a crop in which a composition as described herein is applied to a crop.
  • the crop pest may be selected from white-flies, thrips, spider mites and tarsonemid mites.
  • a suitable amount of the composition is applied, preferably to each crop plant. The amount may be from 1-15 ml preferably 2-7 ml.
  • the composition may be applied to the crop in different ways, for example by sprinkling the crop with the composition or as the device as described herein.
  • Non limiting examples of the invention and suitability of Acaroidea such as at least Acaridae, e.g. ⁇ carus gracilis ⁇ Suidasiidae, e.g. Suidasia medanensis or Chortoglyhpus arcuatus as a factitious host for rearing a predatory mite are given below.
  • Example 1 As indicated in the study data below, trials have shown that at 29 0 C and 75% RH the mean number of eggs laid per female Amblyseius swirskii is in the range 1.80 to 1.85 eggs per female per day when feeding on excess supply of Suidasia medamnsis. This is a rate of reproduction which is very suitable for economic production of Amblyseius swirskii.
  • a composition comprising a breeding population of predatory mite species Amblyseius swirskii and a factitious host comprising Acarus gracilis , Suidasia medanensis or Chortoglyphus arcuatus are supported on a carrier such as bran flakes or wood chips, along with suitable foodstuffs such as cereal extracts, yeast etc.
  • the composition is placed in a sachet with a predatory mite exit aperture.
  • the sachet has a hook to hang the sachet on a plant.
  • the number of individuals of the predatory might species relative to the number of individuals of the factitious host is from about 100: 1 to 1 :20, such as about 1 : 1 to 1 : 10, e.g. about 1:4, 1 :5 or 1 : 7.
  • the composition has proved useful in controlling white- flies, thrips, spider mites and tarsonemid mites on crops.
  • a composition comprising a breeding population of predatory mite species Amb ⁇ yseius swirskii and a factitious host comprising Acarus gracilis Suidasia medanensis or Chortoglyphus arcuatus are supported on a carrier such as bran flakes or wood chips, along with suitable foodstuffs such as cereal extracts, yeasts etc.
  • the mixture is diluted by adding extra carrier material such as bran.
  • the number of individuals of the predatory mite species relative to the number of individuals of the factitious host may be from about 100:1 to 1 :20, such as about 1 :1 to 1: 10, e.g. about 1:4, 1:5 or 1: 7.
  • the composition may be added to a container such as a tube or bottle, from which the composition can be sprinkled or otherwise distributed onto a crop.
  • the composition has proved useful in controlling white- flies, thrips, spider mites and tarsonemid mites on crops.
  • Suidasia medanensis thrives in aerated media, and benefits from addition of a suitable inert component to the culture medium such as vermiculite. This also enhances the suitability of the culture environment for the production of plant and soil dwelling predatory species of mites. This is equally true in bulk commercial culture and in individual breeding sachets. Optimum culture conditions are around 27 0 C and 85% relative humidity.

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Abstract

A composition comprising a population of a predatory mite and a host mite population selected from the family of Suidasiidae or Chortoglyphidae.

Description

Mite composition Technical Field
The present invention relates to a mite composition, a method for rearing a mite, a rearing system, a use of the composition in biological pest control, and to a method of biological pest control.
Introduction
Biological pest control is a component of an integrated pest management strategy in agriculture and is an alternative to treating crops with insecticides. It is described as the reduction of pest populations by natural enemies. Pests that affect plants and such have an impact on crop yield include aphids, caterpillars, thrips, mites, white-flies and slugs. Many commercial insectaries rear and market a variety of natural enemies, including predaceous mites, lady beetles, lacewings, praying mantids, and several species of parasitoids. For example, it is known to use a composition of a rearing population of predatory mite fed on a factitious host supported on a carrier in biological pest control. Such a composition is often supplied in a housing having a predatory mite exit aperture. The housing is placed on or adjacent to plants and the predatory mite exits the housing to prey on unwanted pests such as white-flies, thrips, spider mites and tarsonemid mites, Examples of such compositions are described in the literature, including WO2006057552 and WO2006071107 in the name of Koppert BV. One example is the predaceous mite Phytoseiulus persimilis which is used for control of the two-spotted spider mite. Another mite that has been used in pest control is Amblyseius cucwveris, a small predator that feeds on a wide range of small arthropod prey. It is used primarily for control of thrips, particularly Frankliniella occidentalis, but can also be used for control of Tarsonemid mites on a number of crops and can reduce Rust Mite (Eriophyidae) populations. Methods for isolating predatory mites from their natural environments and for culturing predatory mites are known in the art.
A problem for the manufacturers of mite compositions for use in biological pest control is finding an economical and easily bred host for predatory mites. Different mite families and indeed different mite species have different characteristics and requirements, such as breeding temperature, life cycle, size which results in different behaviour when using the mite to serve as a food source for a predatory mite. Other criteria which are important include the ability to live and thrive in an environment also suitable for the predatory mite, not to produce toxins which adversely affect the predatory mite, and to have a multiplication rate which does not lead to an overwhelming of the culture, but still is rapid enough to maintain a steady food supply for the predator which it supports, without its self being too rapidly eliminated. Furthermore, the impact of the mite on the crop plants should be minimal. Another factors to consider include the allergenic properties of the mite as this causes problems in production and in products which are shaken over the crop.
The inventors have found that a host comprising species from the super family of Acaroidea, such the family Suidasiidae, e.g. Suidasia medanensis (Oudemans, 1924), or from the super family of Glycyphagoidea can be economically and easily bred. A benefit of Acaroidea, especially Suidasia medanensis, is that it is very small, and all life stages (adults, nymphs and eggs) of Acaroidea, especially Suidasia medanensis, are of a size which can be eaten by young and adult prey mites. Such a host has been found particularly useful for rearing phytoseiid predatory mite species, such as Amblyseϊus swirskii. In its natural habitat, Amblyseius swirskii feeds on plant feeding mites such as spider mites, tarsonemid and eriophyid mites and a range of plant dwelling insects. In nature, Amblyseius swirskii does not encounter mites from the family of Suidasiidae and Chortoglyphidae which are not plant dwelling species.
Description of Invention
The invention relates to a mite composition comprising a breeding population of a predatory mite species, and a factitious host population comprising at least one species selected from the super family of Acaroidea, such as Suidasiidae or Acaridae or of the super family of Glycyphagoidea.
In one aspect, the invention relates to a composition comprising a population of a predatory mite and a host mite population selected from the family of Suidasiidae or Chortoglyphidae .
The population of the predatory mite and the host population are each preferably breeding populations, thus leading to an increase in the number of individuals present in the population. The population comprises adults from both sexes and preferably individuals of other stages in the life cycle.
Mites as described herein are isolated from their natural environment and combined in the composition. In one embodiment the host population comprises at least one species selected from the family Suidasiidae. The preferred genus is SuidasiΑ. The host species may be selected from Suidasia medanensis, S. medanensis, S. nesbitti , S. pontiβca or S. reticulata. The most preferred host species of the family Suidasiidae is Suidasia medanensis (Oudemans, 1924).
In another embodiment, the host population comprises at least one species selected from the family Acaridae, such as of the genus Acarus, preferably Acarus gracilis (Hughes, 1957).
In another embodiment, the host mite population is selected from the superfamily Glycyphagoidea, preferably from the family of Chortoglyphidae, such as the genus Chortoglypus. In a preferred embodiment, the genus is Chortoglyhpus. In another preferred embodiment, the species of the genus Chortoglyphus is Chortoglyphus arcuatus (Troupeau, 1879).
In another embodiment, the host population may comprise a mixture of at least two different species, for example from the same genus or from different genera. For example, the composition may comprise a combination of Acarus gracilis, Suidasia medanensis and/or Chortoglyphus arcuatus. Furthermore, in one embodiment Suidasia medanensis and/or Chortoglyphus arcuatus may also be combined with other known species, such as Carpoglyphus.
The breeding population of predatory mite species may be a phytoseiid predatory mite species such as Amblyseϊus swirskii, Amblyseius cucumeris, Amblyseius andersoni or Ambfyseius californicus or Typhlodromus pyri. Preferably, the predatory mite is Amblyseius swirskii. The composition may include combinations of the predatory mites listed above.
Thus, in one preferred aspect, the invention relates to a composition comprising a population of Amblyseius swirskii and a host population of Suϊdasia medanensis,
In another preferred aspect, the invention relates to a composition comprising a population of Amblyseius swirskii and a host population of ' Chortoglyphus arcuatus.
Preferably, the composition comprises a carrier for individuals of said populations. The carrier may be bran flakes or wood chips or other similar organic materials, vermiculite or any other suitable light granular material. The composition may further comprise a food substance suitable for the factitious host population. The composition may further comprise an inert component such as vermiculite. Preferably, the number of individuals of the predatory mite species relative to the number of individuals of the factitious host is from about 100:1 to 1 :20, such as about 1 :1 to 1: 10, e.g. about 1 :4, 1:5 or 1: 7. A skilled person would know that these amounts represent a general guide and that the exact dosage depends on the species used. As this is a living culture the precise ratios will vary over time as the food supply and prey species is consumed and the predator population multiplies. However, in general, the number of individuals of the host population should exceed that of the predatory mite.
According to the invention, the composition described herein can be used in a method for biological crop protection and biological pest control. The use of the composition is particularly beneficial because it allows mass rearing of Amblyseius swirskii. The host population in the composition is a factitious host and serves as a source of food for the predatory mite if other food sources are not available. The composition and methods described herein can be used on crops such as vegetables, fruit crops, ornamental crops or tree crops, e.g. peppers, eggplants, cucumbers, melons, watermelons, strawberries, raspberries, roses, gerberas, chrysanthemums, or citrus trees or any other suitable crops. The pest may be selected from white-flies, thrips, spider mites and tarsonemid mites.
According to another aspect of the present invention there is provided a method for rearing or culturing a predatory mite such as Amblyseius swirskii, comprising providing a composition according to the invention and allowing individuals of the predatory mite to prey on individuals of said factitious population. The method may further comprise maintaining the composition at 17-360C and/or 59-96% humidity, e.g. 270C and 85% humidity. The composition may comprise a earner and a suitable food substance.
Another aspect of the present invention relates to use of Acaroidea, preferably of the family Suidasiidae preferably of the genus Suidasia, such as Suidasia medanensis, or Glycyphagoidea, preferably from the family of Chortoglyphidae, such as the genus Chortoglypus as a factitious host for rearing a predatory mite such as Amblyseius swirskii.
According to another aspect of the present invention there is provided a device for rearing a predatory mite, such as Amblyseius swirskii, comprising providing a container holding the composition according the present invention. The container may comprise an exit for at least one mobile life stage of the predatory mite. The exit may be suitable for providing a sustained and/or controlled release of the mite. The container may be in the form of a sachet. The exit may be an aperture in the sachet. The sachet may include a hook to support the sachet on a plant. A suitable delivery system is for example described in GB2393890. The product may be distributed into the crop by being released into an artificial wind current, or dispensed from a rotating tube or similar dosing device.
Another aspect of the present invention relates to a method of biological pest control in a crop in which a composition as described herein is applied to a crop. The crop pest may be selected from white-flies, thrips, spider mites and tarsonemid mites. A suitable amount of the composition is applied, preferably to each crop plant. The amount may be from 1-15 ml preferably 2-7 ml. The composition may be applied to the crop in different ways, for example by sprinkling the crop with the composition or as the device as described herein.
Further modifications will be apparent to those skilled in the art without departing from the scope of the present invention.
Non limiting examples of the invention and suitability of Acaroidea, such as at least Acaridae, e.g. Λcarus gracilis^ Suidasiidae, e.g. Suidasia medanensis or Chortoglyhpus arcuatus as a factitious host for rearing a predatory mite are given below.
Examples
Example 1 As indicated in the study data below, trials have shown that at 290C and 75% RH the mean number of eggs laid per female Amblyseius swirskii is in the range 1.80 to 1.85 eggs per female per day when feeding on excess supply of Suidasia medamnsis. This is a rate of reproduction which is very suitable for economic production of Amblyseius swirskii.
Study data
Each replicate = 1 adult female A. swirskii on a leaf disc arena with all stages of Suidasia medanensis as food.
Number of offspring was counted after 48 hours. Arenas were maintained at 29 deg.C and 75%RH
Replicate Ova Nymph Total Daily mean
1 3 1 4 2.00
2 3 1 4 2.00
3 2 0 2 1.00
4 4 0 4 2.00
5 1 0 1 0.50
6 3 0 3 1.50
7 3 1 4 2.00
8 4 1 5 2.50
9 4 1 5 2.50
10 5 0 5 2.50
Total 32 5 37
48 hr mean 3.70 eggs/female/day
Daily mean 1.85 eggs/female/day
Each replicate = 1 adult female A.swirskii on a leaf disc arena with all stages of Suidasia medanensis as food.
Number of offspring was counted after 72 hours. Arenas were maintained at 29 deg.C and 75%RH
Replicate Ova Nymph Total Daily mean
1 1 3 4 1.33
2 1 4 1.33
3 1 3 4 1.33
4 5 3 8 2.67 5 4 1 5 1.67
6 2 2 4 1.33
7 5 1 6 2.00
8 1 2 3 1.00
9 3 4 7 2.33
10 2 2 4 1.33
11 2 2 4 1.33
12 7 2 9 3.00
13 5 2 7 2.33
14 6 0 6 2.00
15 4 2 6 2.00
16 4 2 6 2.00
17 3 3 6 2.00
18 5 2 7 2.33
19 3 3 6 2.00
20 3 2 5 1.67
21 2 4 6 2.00
22 2 4 6 2.00
23 2 1 3 1.00
24 3 1 4 1.33
25 6 0 6 2.00
Total 84 52 136
72 hr mean 5.44 eggs/female/day
Daily mean 1.81 eggs/female/day
Example 2
A composition comprising a breeding population of predatory mite species Amblyseius swirskii and a factitious host comprising Acarus gracilis , Suidasia medanensis or Chortoglyphus arcuatus are supported on a carrier such as bran flakes or wood chips, along with suitable foodstuffs such as cereal extracts, yeast etc. The composition is placed in a sachet with a predatory mite exit aperture. The sachet has a hook to hang the sachet on a plant. Preferably the number of individuals of the predatory might species relative to the number of individuals of the factitious host is from about 100: 1 to 1 :20, such as about 1 : 1 to 1 : 10, e.g. about 1:4, 1 :5 or 1 : 7. The composition has proved useful in controlling white- flies, thrips, spider mites and tarsonemid mites on crops. Example 3
A composition comprising a breeding population of predatory mite species Ambϊyseius swirskii and a factitious host comprising Acarus gracilis Suidasia medanensis or Chortoglyphus arcuatus are supported on a carrier such as bran flakes or wood chips, along with suitable foodstuffs such as cereal extracts, yeasts etc. The mixture is diluted by adding extra carrier material such as bran. The number of individuals of the predatory mite species relative to the number of individuals of the factitious host may be from about 100:1 to 1 :20, such as about 1 :1 to 1: 10, e.g. about 1:4, 1:5 or 1: 7. The composition may be added to a container such as a tube or bottle, from which the composition can be sprinkled or otherwise distributed onto a crop. The composition has proved useful in controlling white- flies, thrips, spider mites and tarsonemid mites on crops. Suidasia medanensis thrives in aerated media, and benefits from addition of a suitable inert component to the culture medium such as vermiculite. This also enhances the suitability of the culture environment for the production of plant and soil dwelling predatory species of mites. This is equally true in bulk commercial culture and in individual breeding sachets. Optimum culture conditions are around 270C and 85% relative humidity.

Claims

Claims
1. A composition comprising a population of a predatory mite and a host mite population selected from the family of Suidasiidae or Chortoglyphidae,
2. A composition according to claim 1 wherein the predatory mite is a phytoseid mite.
3. A composition according to claim 2 wherein the predatory mite is Λmblyseius swirskii.
4. A composition according to any of claims 1 to 3 wherein the host population is selected from Suidasiidae.
5. A composition according to claim 4 wherein the host population is selected from Suidasia.
6. A composition according to claim 5 wherein the host population is Suidasia medamensis.
7. A composition according to any of claims 1 to 3 wherein the host population is selected from Chortoglyphidae.
8. A composition according to claim 7 wherein the host population is selected from Chortoglyphus.
9. A composition according claim 8 wherein the host population is Chortoglyphus arcuatus.
10. A composition according to a preceding claim wherein the host population is selected from the family of Suidasiidae or Chortoglyphidae and further comprises at least a second mite species.
11. A composition according to a preceding claim wherein the composition further comprises a earner.
12. A method for biological pest control comprising applying a composition as defined in any of claims 1 to 11 to a crop.
13. The use of a composition as defined in any of claim 1 to 1 1 for biological pest control.
14. A method for rearing or culturing a population of a predatory mite comprising providing a host population of Suidasia medamensis or Chortogfyphus arcuatus to a predatory mite.
PCT/GB2008/050129 2007-02-26 2008-02-26 Mite composition Ceased WO2008104807A2 (en)

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DK08709649.1T DK2124573T4 (en) 2007-02-26 2008-02-26 Mite composition
KR1020097019969A KR101516710B1 (en) 2007-02-26 2008-02-26 mite composition
PL08709649.1T PL2124573T5 (en) 2007-02-26 2008-02-26 The composition of the mites
JP2009550323A JP5349334B2 (en) 2007-02-26 2008-02-26 Tick composition
EP08709649.1A EP2124573B2 (en) 2007-02-26 2008-02-26 Mite composition
CN2008800062532A CN101677576B (en) 2007-02-26 2008-02-26 Mite composition
ES08709649T ES2364699T5 (en) 2007-02-26 2008-02-26 Mite Composition
AT08709649T ATE507721T2 (en) 2007-02-26 2008-02-26 MITE COMPOSITION
DE602008006688T DE602008006688D1 (en) 2007-02-26 2008-02-26 MITE COMPOSITION
IL200253A IL200253B (en) 2007-02-26 2009-08-05 Karda compounds
MA32233A MA31263B1 (en) 2007-02-26 2009-09-24 Installation of mites.

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GB0703672.6 2007-02-26
GBGB0703672.6A GB0703672D0 (en) 2007-02-26 2007-02-26 Mite composition, use thereof, method for rearing a mite, rearing system, use of the composition in biological pest control, and method of biological pest
GB0710122.3 2007-05-26
GBGB0710122.3A GB0710122D0 (en) 2007-02-26 2007-05-26 Mite composition use thereof method for rearing a mite rearing system use of the composition in biological pest control and method of biological pest control

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EP2380436A1 (en) * 2010-04-23 2011-10-26 Agrobio S.L. Mite composition, method for rearing a phytoseiid predatory mite species, and use of the composition for controlling crop pests
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CN101677576B (en) 2013-04-03
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PL2124573T5 (en) 2019-12-31
PT2124573E (en) 2011-07-06
DE602008006688D1 (en) 2011-06-16
ATE507721T2 (en) 2011-05-15
CN101677576A (en) 2010-03-24
IL200253B (en) 2018-01-31
ES2364699T3 (en) 2011-09-12
MA31263B1 (en) 2010-03-01
DK2124573T4 (en) 2019-08-19
KR20090115764A (en) 2009-11-05
EP2124573B2 (en) 2019-05-15
DK2124573T3 (en) 2011-08-29
JP5349334B2 (en) 2013-11-20
IL200253A0 (en) 2010-04-29
KR101516710B1 (en) 2015-04-30
JP2010519248A (en) 2010-06-03
EP2124573A2 (en) 2009-12-02
WO2008104807A3 (en) 2009-07-02
PL2124573T3 (en) 2011-09-30
GB0710122D0 (en) 2007-07-04
GB0703672D0 (en) 2007-04-04

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