Increasing concern about codling moth resistance to. If a codling moth source exists nearby, use border sprays five to six rows of insecticides. Pesticide resistance in codling moth back the work in this proposal is designed to screen for insecticide resistance in uk populations of codling moth, and to identify the genomic location of insecticide resistances to several insecticides in the wider european population of codling moth. Crossresistance between azinphosmethyl and acetamiprid in. Their unique biology combined with their physical attributes makes them forever a formidable foe to anyone that grows apples. Monitoring and characterization of insecticide resistance. Codling moths are not large, as the full grown adult codling moth has an average length of 10 mm and wingspan of 20 mm. It contains a naturally occurring virus that infects and kills larvae of the codling moth cydia pomonella. Innovation in the biological control of codling moth and oriental fruit moth with madex twin cydx is an aqueous suspension concentrate biological insecticide from certis usa.
Two techniques topical application and direct incorporation of insecticide into the trap adhesive were used to assay male moths caught in pheromone traps. The codling moth has recently developed simple, cross and multiple resistance to various pesticides. Insecticide resistance status of the codling moth cydia. Crossresistance between azinphosmethyl and acetamiprid. Insect hosts, life stages, life histories, damage, monitoring, biological control, and management are described for most major and minor pests in orchards as well as major natural enemies. Worldwide variability of insecticide resistance mechanisms. Costs of insecticide resistance in cydia pomonella. Degree day accumulations are used to predict when certain biological events occur, such as egg laying, egg hatch, or scale crawler movement, they also synchronize for. Pdf insecticide resistance status of the coodling moth. The wings fold into a tentlike shape when the moths are resting. Growers should not rely on a single insecticide mode of action throughout the year to control codling moth. Codling moth granulovirus is an effective organically acceptable tool to control codling moth. Fortunately, there are new labeled insecticide alternatives for codling moth control on apples with different modes of action. Codling moth wing morphology changes due to insecticide resistance article pdf available in insects 1010.
Codling moth treatment timing is coming up in midmay for many areas of northern utah. Relative fitness of one susceptible strain sv and two strains selected for resistance to diflubenzuron rt and deltamethrin rv, respectively, was measured in the absence of insecticide selection pressure. Adult brownishgray moth about 1012 mm long with a copper spot on the end of each forewing. Assessment of insecticide resistance in eggs and neonate. Intensive application of chemicalbased insecticide treatments for the control of cm has led to resistance development. A chromosomelevel genome assembly of cydia pomonella. Tradeoffs between insecticide resistance and development time in codling moth. Stara and others published insecticide resistance in the codling moth cydia pomonella find, read and cite all the research you need on researchgate.
Applecodling moth pacific northwest pest management. They are distinguished from other similar moths in the family tortricidae by the distinctive patterns on their forewings. Orchard pest management provides a practical reference on tree fruit ipm. Pleiotropy of insecticide resistance in the codling moth. Codling moth wing morphology changes due to insecticide. Dominguez davila 3, katarina maryann mikac 4 and renata bazok 1 1 department for agricultural zoology, faculty of agriculture, university of zagreb, 0 zagreb. Deltamethrin resistance in the codling moth lepidoptera. Resistance of spanish codling moth cydia pomonella. Insecticide resistance in codling moth field populations has been related mainly to increased enzymatic metabolization and targetsite mutations voudouris et al. Insecticide resistance trials at the penn state fruit research and extension center, along with recent apple load rejections due to internal. The work in this proposal is designed to screen for insecticide resistance in uk populations of codling moth, and to identify the genomic location of insecticide resistances to several insecticides in the wider european population of codling moth. The life cycle involves one complete and one partial generation per year in southern britain, though two generations occur in hot summers. Snps in 667 genes involved in the azinphos methyl a and deltamethrin b resistance. Stara and others published insecticide resistance in the codling moth cydia pomonella find, read and cite all the.
Phenological segregation of insecticide resistance alleles. However, such an adaptive process has been associated with an increased heterogeneity in. Identification larva pinkishwhite caterpillar with black or mottled black head. Seven field populations collected from apple, malus domestica borkhausen rosaceae, orchards, and three laboratory susceptible strains of. Codling moth adults are about 12 to 34 inch long with mottled gray wings that they hold tentlike over their bodies figure 1. The codling moth is one of the principal pests of apple in the world. Codling moth wsu tree fruit washington state university. Worldwide variability of insecticide resistance mechanisms in. Tortricidae, to insecticides has become a major problem in many apple and pear production areas.
Selection for insecticide resistance in the codling moth cydia pomonella results from allelic substitution at two to three loci in southeastern french populations of this species. Insecticide resistance trials at the penn state fruit research and extension center, along with recent apple load rejections due to internal worms, indicate a need to refocus attention on strategies to slow down the development of insecticide resistance in codling moth. Correlated insecticide crossresistance in azinphosmethyl resistant codling moth lepidoptera. The identification of sources of resistance is crucial. Field resistance issues moderate decreasing low resistance knowledge and investigation tools moderate increasing high maintaining effective control strategies for codling moth, cydia pomonella insecticide resistance action committee. Hear a national public radio story from 29 sep 2007 on this problem. Jun 01, 2012 the obvious benefits associated with insecticide resistance for pest species may come at a cost to other lifehistory traits. If the orchard has a history of codling moth problems, use one or more insecticide applications against the first generation. Pdf insecticide resistance status of the coodling moth cydia. Its not the moth stage of this pest which damages your apples its the caterpillar stage of its life which burrows into your apples. In this study, we compared the larval and pupal developmental times, pupal mass wing surface area and wing fluctuating asymmetry fa in insecticide resistant and control strains of codling moth, cydia pomonella l. Dominguez davila 3, katarina maryann mikac 4 and renata bazok 1. However, such an adaptive process has been associated with an increased heterogeneity in the developmental responses to climatic factors such as temperature.
The table of dates provides two options for managing the first generation. Sep 17, 2019 genes involved in insecticide resistance revealed by genome data of the codling moth, cydia pomonella. Our aim was to determine the level of insecticide resistance in spanish field populations. Phenological segregation of insecticide resistance alleles in. Codling moth is a key pest of apple, which attacks the fruit directly causing economic damage at low population densities. Codling moth prefers apple but also attacks pear, largefruited hawthorn and quince. Intensive application of chemicalbased insecticide treatments for the control of cm has led to resistance. Cydia pomonella, codling moth, resistance, apple orchard introduction the codling moth cydia pomonella l. Jul 12, 2016 the codling moth is one of the principal pests of apple in the world. Its not the moth stage of this pest which damages your apples its the caterpillar stage. May 07, 2018 codling moth treatment timing is coming up in midmay for many areas of northern utah.
Both strains are clearly differentiable by their gst and mfo activities reyes et al. Variation in response to insecticide in codling moth, cydia pomonella l. Efforts to control the codling moth in the past mostly relied on the use of broad spectrum insecticide sprays, which has resulted in the development of insecticide. However, there are no insecticide resistance studies in the country as yet. Resistance to new selective chemistries and potential changes in developmental rates stephen c. Analytical procedures adult moths were sexed before analysis. Worldwide variability of insecticide resistance mechanisms in the codling moth, cydia pomonella l. Bacillus thuringiensisbt is the most widely used biopesticide lacey et al. Pest management challenges and control practices in codling moth. Codling moth resistance to some of the older insecticides that had been used for control.
Tortricidae, has developed resistance to various insecticides. Do not apply to large trees unless adequate spray coverage can be verified. It is a reduced risk insecticide that has little or no effect on beneficial insects and mites. Pdf insecticide resistance in the codling moth cydia pomonella. Only use in orchards with lowtomoderate codling moth populations. The inheritance of deltamethrin resistance in cydia pomonella l. Codling moth additional information apple best practice guide. Identify and treat codling moth with our experts advice. Welter and frances cave department of environmental science, policy, and management university of california, berkeley, ca studies have indicated that codling moths resistant from lab selections to.
Resistance to insect growth inhibitors dimilin 48 sc and. Almost everyone has bitten into a wormy apple or pear, an unpleasant experience. Two techniques topical application and direct incorporation of insecticide into the trap adhesive were used to. Pdf insecticide resistance in the codling moth cydia. Lepidoptera tortricidae is a key pest of pome fruit apple, pear and quince and walnut orchards in most temperate regions of the world. Their appearance blends well with most tree bark, making them difficult to detect. Whether you have 1 tree or an orchard spanning hundreds of acres, codling moths can take away your harvest quickly and. A worm in homegrown fruit is not really a worm, but most likely a codling moth caterpillar. Although codling moth larvae are susceptible to cry 1 and some of the other bt toxins andermatt et al. Codling moth wing morphology changes due to insecticide resistance ivana pajac. They can be a problem in commercial orchards as well as for backyard fruit trees. In california, races of codling moth attack prune and walnut. Pears have some natural resistance to attack by codling moth when fruit are small because of their hardness, however, pears can become heavily infested in late summer as they mature. Insecticide resistance in the codling moth cydia pomonella.
Improvement of the sterile insect technique for codling. Insecticide resistance action committee the cm questionnairesurvey regional survey of codling moth resistance designed for given region basic field data in xxx country. Broadspectrum insecticide resistance was detected for codling moth. Pleiotropy of insecticide resistance in the codling moth, cydia. Nomolt 15 sc was also detected in part of codling moth population from velke. Dates for the remaining locations will be provided when available. Codling moth populations are widely resistant to conventional and insect growth regulator insecticides in southern and central europe. Do not apply to large trees unless adequate spray coverage can be. Resistance monitoring is crucial to the effective management of resistance in codling moth. Alternative techniques for dealing with codling moth have been widely accepted by farmers, and have reduced orchard pesticide use by 80. Broadspectrum resistance presents serious problems for management of the codling moth in michigan.
Pdf insecticide resistance may enhance the response to a. Codling moths have accounted for more damage to apples then any other pest. In southern germany there have been reports of resistance to one strain of cmgv. Codling moths northwest center for alternatives to pesticides. Genes involved in insecticide resistance revealed by genome data of the codling moth, cydia pomonella. The resistance has forced growers in those regions to adopt alternative control strategies, mainly using pheromone mating disruption andor codling moth granulovirus. Owing to its economic importance, it is a highly controlled species and the intense selection pressure the species is under has likely caused it to change its phenotype in response. With apple ipm, degree day models are used primarily for three insects, oriental fruit moth, san jose scale and codling moth. Resistance development is one of the major problems in applying the insecticides for the control of c. Codling moth larvae damage fruit directly making it a pest that can be tolerated at only very low levels. Increasing concern about codling moth resistance to insecticides larry gut and john wise entomology controlling populations of codling moth cm with previously reliable insecticides applied at the label dosage and at the proper time has become difficult for some michigan growers.
We examined the insecticide resistance status of 33 and 38 populations of fifthinstar nondiapausing and diapausing larvae, respectively by applying bioassays, biochemical and dna. The obvious benefits associated with insecticide resistance for pest species may come at a cost to other lifehistory traits. Pdf codling moth wing morphology changes due to insecticide. Maintaining effective control strategies for codling moth. Insecticide resistance management for codling moth. Insecticide resistance may enhance the response to a hostplant volatile kairomone for the codling moth, cydia pomonella l. Life history mature codling moth larvae overwinter in silken cocoons in protected sites on the tree under loose bark, in cracks and crevices, in the soil or in wooden materials under or. Life history tradeoffs between insecticide resistance and.
Its resistance to synthetic insecticides organophosphates, pyrethroids, abamectin, benzoylureas, benzhydrazides, neonicotinoids, and macrocyclic lactones has been reported in several countries since the. For seven decades, chemical measures have been the mainstay of codling moth control, but insecticide use is beginning to fail on a worldwide scale due to evolution of pesticideresistant strains. Option a is the traditional method, where the first insecticide coincides with egg hatch. Resistance to azinphosmethyl, lambdacyhalothrin and methoxyfenozide was associated with reduced residual activity in the. Three populations of codling moth in neonate larvae were evaluated for resistance to seven insecticides via diet bioassays, and compared with a susceptible population. New management programs have been developed and implemented that rely more heavily on other classes of insecticides. Codling moths northwest center for alternatives to. Codling moth, cydia laspeyresia pomonella, is a serious insect pest of apples, pears, and english walnuts.
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