| [panonychus ulmi allergy (proceedings)]. | | 1977 | 578353 |
| respiratory allergies (bronchial asthma and rhinitis) due to sensitization of type i allergy to red spider mite (panonychus ulmi koch). | the inhabitants of a fruit growing area often report spontaneously of sensitization to the red spider mite (rsm) (panonychus ulmi koch). these are for the most part sensitizations with low clinical symptoms (rhinitis, conjunctivitis and erythema). severe clinical developments with bronchial asthma have been observed. we investigated six patients working in a fruit growing area sensitized by rsm. the sensitizations corresponded to a type i allergy. skin tests and provocation tests (nasal as well ... | 1992 | 1464051 |
| a virus disease of the european red mite panonychus ulmi (koch). | | 1967 | 6049600 |
| [acaricidal, chemosterilant and insecticidal activity of triazine derivatives]. | a large number of 1-aryl-3,3-dialkyl triazenes and 1,2-diphenyl triazenes variously substituted in the 3 position with oh and alkyl groups were prepared and studied for acaricide activity against panonychus ulmi and chemosterilizing and insecticidal activity against musca domestica. the results highlighted the marked chemosterilizing activity of 1-(2-methoxyphenyl)-3,3-di-n-propyltriazene and the interesting acaricidal activity of 1-(4-benzoylphenyl)-3,3-dimethyltriazene. the examination of such ... | 1982 | 7128812 |
| spider mite allergy in apple-cultivating farmers: european red mite (panonychus ulmi) and two-spotted spider mite (tetranychus urticae) may be important allergens in the development of work-related asthma and rhinitis symptoms. | recent investigations have suggested that the citrus red mite (panonychus citri) is the most important allergen affecting citrus-cultivating farmers with asthma, allergic rhinitis, or both. | 1999 | 10589014 |
| assessment of amblyseius fallacis (acari: phytoseiidae) for biological control of tetranychid mites in an ontario peach orchard. | we introduced a mass-reared pyrethroid-resistant strain of the predatory phytoseiid mite amblyseius fallacis (garman) into an ontario peach orchard in an attempt to control populations of the phytophagous mites panonychus ulmi koch and tetranychus urticae koch (acari: tetranychidae). releases of 1,000 and 2,000 mites per tree were made, at three different times. the release of 2,000 mites per tree in june and in july resulted in significantly higher phytoseiid densities than was observed on cont ... | 1999 | 10737734 |
| some effects of pre-release host-plant on the biological control of panonychus ulmi by the predatory mite amblyseius fallacis. | amblyseius fallacis garman has been selected for pyrethroid resistance and mass reared for experimental release as a biological control agent for tetranychid mites on a number of crops in canada. several releases of this predator onto apple and peach trees have failed to result in the establishment of a. fallacis, or in the biological control of panonychus ulmi koch. here, we test the hypothesis that the change of host-plant at the time of release is a critical factor in the establishment of a. ... | 2000 | 10823354 |
| performance of a pyrethroid-resistant strain of the predator mite typhlodromus pyri (acari: phytoseiidae) under different insecticide regimes. | an organophosphate pyrethroid-resistant strain of typhlodromus pyri scheuten imported from new zealand was reared on potted apple trees in an outdoor insectary. from 1988 to 1995, the population was selected one to three times per year with a dilute solution (1.7 ppm) of the pyrethroid cypermethrin. petri dish bioassays with cypermethrin in 1995 indicated that the insectary-reared t. pyri had an lc50 of 81 ppm versus 0.006 ppm for native t. pyri taken from a research orchard. the bioassays sugge ... | 2000 | 10902304 |
| functional response of euseius finlandicus and amblyseius andersoni to panonychus ulmi on apple and peach leaves in the laboratory. | the functional response of adult females of the predatory mites euseius (amblyseius) finlandicus and amblyseius andersoni to larvae and adult females of the fruit tree red spider mite panonychus ulmi was determined on apple and peach leaf disks in the laboratory at 25 degrees c and 16:8 (l:d). for adult females of p. ulmi the predation efficiency of e. finlandicus was higher on peach than on apple, whereas that of a. andersoni was higher on apple than on peach. efficiency of predation on larvae ... | 2000 | 11110236 |
| acaricide toxicity and resistance in larvae of different strains of tetranychus urticae and panonychus ulmi (acari: tetranychidae). | the toxicities of eight structurally different acaricidal compounds to six-legged larvae (first motile stage) of three laboratory strains of the two-spotted spider mite, tetranychus uritcae, and the european red mite, panonychus ulmi, were evaluated following spray application. the larvae of five field-derived strains of t urticae originating from france, italy, brazil, california and florida were also tested for their susceptibilities to discriminating concentrations of several acaricides resul ... | 2001 | 11455655 |
| emission of volatile organic compounds by apple trees under spider mite attack and attraction of predatory mites. | emission rates of volatile organic compounds (vocs) from pirus malus l. subsp. mitis (wallr.) var. golden delicious and var. starking attacked by the phytophagous mite panonychus ulmi koch, and their attractiveness to the predatory mites amblyseius andersoni chant and amblyseius californicus mcgregor, were studied during three years. a large variability was found in the emission of individual vocs depending on the infestation, the apple tree variety and the date. there were larger total voc emis ... | 2001 | 11508530 |
| species association among predaceous and phytophagous apple mites (acari: eriophyidae, phytoseiidae, stigmaeidae, tetranychidae). | predator-predator, predator-prey, and prey-prey associations among nine species of mites were studied in a plot of 100 'red delicious' apple (malus pumila miller) trees from 1990 to 1997. in 1990, seven-year-old trees were inoculated with panonychus ulmi (koch), tetranychus urticae koch (acari: tetranychidae) or both, and sprayed with azinphosmethyl (alone or plus endosulfan), or nothing. the species zetzellia mali (ewing) (acari: stigmaeidae), amblyseius andersoni chant (acari: phytoseiidae), e ... | 2001 | 11513362 |
| ige binding components in tetranychus urticae and panonychus ulmi-derived crude extracts and their cross-reactivity with domestic mites. | recent investigation has revealed that spider mites such as tetranychus urticae and panonychus ulmi are important allergens in the development of occupational asthma among apple farmers. | 2001 | 11591197 |
| sublethal effects of esfenvalerate residues on pyrethroid resistant typhlodromus pyri (acari: phytoseiidae) and its prey panonychus ulmi and tetranychus urticae (acari: tetranychidae). | the effect of residues of esfenvalerate on oviposition of the resistant strain of the predatory mite typhlodromus pyri and its main prey, european red mite panonychus ulmi and two-spotted spider mite tetranychus urticae, were investigated. t. pyri showed a significant linear reduction in oviposition after 24 h in the presence of increasing levels of esfenvalerate residue applied at the field rate. furthermore, when given a choice, t. pyri preferred to lay eggs on residue-free surfaces. of the tw ... | 2001 | 11603738 |
| characterization of resistance to clofentezine in populations of european red mite from orchards in ontario. | resistance to clofentezine was identified in four populations of the european red mite, panonychus ulmi (koch), from apple orchards in ontario after ca. 5 years use. resistance was expressed at high levels (> 2000-fold at the lc 50) to clofentezine in a population selected in the laboratory. this population was resistant to hexythiazox and to the organotin compounds cyhexatin and fenbutatin-oxide. however, a population selected with fenbutatin-oxide did not show cross resistance to clofentezine. ... | 2002 | 12593584 |
| [influence of certain insecticidal products utilized in vine care on the multiplication of panonychus ulmi koch (acarina tetranychidae)]. | | 1961 | 13692117 |
| an index for selective toxicity of miticides to phytophagous mites and their predators based on orchard trials. | data from nine trials conducted from 1990 to 1998 in apple orchards in nova scotia and quebec, canada, were used to estimate the predator-prey selectivity of miticides and their potential compatibility with biological control of mites. the european red mite panonychus ulmi (koch) was the dominant and more harmful phytophagous species, followed by the apple rust mite, aculus schlechtendali (nalepa). two predacious mites, the phytoseiid, typhlodromus pyri sheuten, and the stigmaeid, zetzellia mali ... | 2003 | 14667054 |
| the predatory mite typhlodromus pyri (acari: phytoseiidae) causes feeding scars on leaves and fruits of apple. | typhlodromus pyri scheuten (acari: phytoseiidae) is the most important predator of panonychus ulmi (koch) (acari: tetranychidae) in orchards and vineyards. it was recently found that adult t. pyri females cause microscopic scars on apple leaves. the present laboratory experiments were carried out to confirm the production of scars on apple leaves and to assess if females cause scars on fruits as well. scar production on apple leaves and/or fruits was investigated under various nutritional condit ... | 2004 | 15285137 |
| acaricidal properties of a chenopodium-based botanical. | the emulsifiable concentrate uda-245 [25% ec (vol:vol)], based on an essential oil extract from chenopodium ambrosioides variety ambrosioides, a north american herbaceous plant, was compared with commercially available pesticides for their effectiveness to control the adult stage and egg hatch of the twospotted spider mite, tetranychus urticae koch (acari: tetranychidae) and the european red mite, panonychus ulmi (koch) (acari: tetranychidae). after a laboratory bioassay with adult twospotted sp ... | 2004 | 15384350 |
| phytoseiid mites on unsprayed apple trees in oregon, and other western states (usa): distributions, life-style types and relevance to commercial orchards. | in unsprayed apple trees in eastern oregon, galendromus flumenis (chant), galendromus occidentalis (nesbitt), typhlodromus caudiglans schuster and metaseiulus citri (garman and mcgregor) were common phytoseiid mites; common plant-feeding mites were the eriophyid, aculus schlechtendali nalepa, the brown mite, bryobia rubrioculus (scheuten) and eotetranychus spp.; apple rust mites seemed to be the primary prey for phytoseiids; the spider mites, tetranychus urticae koch and panonychus ulmi (koch) w ... | 2004 | 15560525 |
| evaluation of hydrophobic and hydrophilic kaolin particle films for peach crop, arthropod and disease management. | hydrophobic and/or hydrophilic kaolin particle film treatments to peach (prunus persica (l) batsch) trees were evaluated for crop and pest management capabilities in six studies from 1997 to 2000. unsprayed control and standard treatments, the latter consisting of a commercial pesticide program, were included for comparison. treatments in initial studies were applied via handgun, which resulted in a uniform and heavy deposit of kaolin after the first application. in contrast, treatments in subse ... | 2005 | 15593071 |
| baseline susceptibility and cross resistances of some new acaricides in the european red mite, panonychus ulmi. | we have developed baseline susceptibility values for four new acaricides: bifenazate, acequinocyl, spirodiclofen and etoxazole for eggs or adult females of a susceptible laboratory population of panonychus ulmi (koch) (acari: tetranychidae). further, we have tested diagnostic concentrations of each acaricide against populations resistant to organochlorine, organotin or igr-type acaricides. resistance to etoxazole (ca. 4-fold) was identified in populations resistant to the igrs clofentezine and h ... | 2005 | 16323048 |
| role of neonicotinyl insecticides in washington apple integrated pest management. part ii. nontarget effects on integrated mite control. | the effect of neonicotinyl insecticides on integrated mite control in washington apple was examined from 0 in a series of 20 field trials (54 treatments) designed primarily to look at efficacy against the codling moth, cydia pomonella, nearly half of the treatments using four or more applications of acetamiprid had peak mite densities exceeding the economic threshold of 5 mites per leaf. overall, acetamiprid treatments had 4.6-fold higher mite densities than the standard organophosphate insectic ... | 2005 | 16341248 |
| acaricidal properties of spinosad against tetranychus urticae and panonychus ulmi (acari: tetranychidae). | laboratory bioassays were conducted to characterize the activity of the insecticide spinosad against the twospotted spider mite, tetranychus urticae koch, and european red mite, panonychus ulmi (koch) (acari: tetranychidae). t. urticae females and larvae were individually placed on bean, phaseolus vulgaris l. (fabaceae), leaf disks treated with four rates of spinosad (25, 55, 121, and 266 ppm) and a water control. significantly fewer t. urticae completed development on any spinosad rates (<15%) ... | 2006 | 16813320 |
| amensalism via webs causes unidirectional shifts of dominance in spider mite communities. | competitive displacement is considered the most severe consequence of interspecific competition; if a superior competitor invades the habitat of an inferior species, the inferior species will be displaced. most displacements previously reported among arthropods were caused by exotic species. the lack of investigation of displacement among native species may be due to their apparently harmonious coexistence, even if it is equivalent to an outcome of interspecific association. a seasonal change in ... | 2006 | 17024380 |
| influence of prey on developmental performance, reproduction and prey consumption of neoseiulus californicus (acari: phytoseiidae). | the spical strain of the predatory mite neoseiulus californicus (mcgregor) is used as a biological control agent, but little is known about its preferred prey and host plants in japan. here we studied the development, reproduction and prey consumption of the spical strain when fed on eggs of five different spider mite species deposited on both their laboratory-rearing plant and cherry, on which all five spider mite species developed well. the developmental periods of immature n. californicus fem ... | 2006 | 17120083 |
| the relationship between winter egg counts of the european red mite panonychus ulmi (acari: tetranychidae) and its summer abundance in a reduced spray orchard. | we studied the relationship between counts of panonychus ulmi (koch) winter eggs per bud and mite-days per leaf accumulated in early to mid-summer on 92-96 apple trees in an orchard in quebec, canada. stepwise regression was used to compute mite-days in the 4 year (1992-1995) data set using winter egg density, cumulative rainfall (r), cumulative degree-days (d), squared values of r and of d, and the product rd as potential predictors. degree-days were accumulated above 10.1 degrees c, the minimu ... | 2007 | 17611807 |
| effects of acaricides, pyrethroids and predator distributions on populations of tetranychus urticae in apple orchards. | we sampled mites in three apple orchards in nova scotia, canada, that had been inoculated with pyrethroid-resistant typhlodromus pyri and had a history of tetranychus urticae outbreaks. the objective of this study was to monitor populations of t. urticae and phytoseiid predators on the ground and in trees and to track dispersal between the two habitats. pesticides were the chief cause of differences in mite dynamics between orchards. in two orchards, application of favourably selective acaricide ... | 2007 | 18008172 |
| lethal, sublethal, and behavioral effects of sulfur-containing products in bioassays of three species of orchard mites. | the effects of three sulfur products (calcium polysulfide [= lime sulfur], dry flowable sulfur, and ammonium thiosulfate, a plant nutrient), were tested in bioassays against a predatory mite, galandromus occidentalis (nesbitt), and two species of tetranychid (pest) mites, twospotted spider mite (tetranychus urticae koch) and european red mite [panonychus ulmi (koch)]. calcium polysulfide and ammonium thiosulfate were acutely toxic on contact to adult females of all three mite species, causing 58 ... | 2009 | 19253652 |
| functional response of the predatory mite chileseius camposi (acarina: phytoseiidae) on densities of it prey, panonychus ulmi (acarina: tetranychidae). | the functional response of the phytoseiid predator chileseius camposi gonzález y schuster, 1962 (acarina:phytoseiidae) on densities of its prey panonychus ulmi (koch, 1836) was evaluated under controlled temperature (20 +/- 2 degrees c), relative humidity (75 +/- 15%) and photoperiod (16:8h l:d). a functional type ii response was displayed (holling's disk). holling, wolf transformation and rogers models gave similar values for estimating parameters of the holling's disk equation; however, estima ... | 2008 | 19419042 |
| the multiple target use of spirodiclofen (envidor 240 sc) in ipm pomefruit in belgium. | envidor 240 sc, active ingredient spirodiclofen is a broad spectrum acaricide acting via lipid biosynthesis inhibition (lbi) with no cross resistance to currently available acaricides and with additional insecticidal properties. envidor is positive ipm listed but in frame of resistance management limited to one application per season. in pear growing envidor constitutes an important tool in pear sucker control in a tandem strategy with abamectine. being totally selective on predatory bugs anthoc ... | 2009 | 20218531 |
| [biological control efficiency of amblyseius cucumeris (oudemans) on panonychus ulmi (koch)]. | based on the life-table parameters and the release effects of amblyseius cucumeris (oudemans) under laboratory and field conditions, the control efficiency of a. cucumeris (oudemans) on panonychus ulmi (koch) was evaluated. when feeding on p. ulmi, a. cucumeris could complete its development period and lay eggs with one generation time of 9.54 d at (25 +/- 1) degrees c. the egg-laying period (24.85 d) and lifespan (38.52 d) of female a. cucumeris were longer than their preys (15.93 d and 34.79 d ... | 2010 | 20387442 |
| effect of the width of the herbicide strip on mite dynamics in apple orchards. | herbicide strips are used in apple orchards to promote tree growth and survival, to increase yield and to reduce the risk of rodent damage to tree bark. however, herbicide strips, particularly wider ones, may cause problems including soil erosion, reduced organic matter, leaching of nitrates into ground water and increased incidence of plant diseases and pests, including two-spotted spider mites, tetranychus urticae koch. in this 2 year study we monitored mite dynamics in apple trees and used st ... | 2011 | 20838882 |
| monitoring of spirodiclofen susceptibility in field populations of european red mites, panonychus ulmi (koch) (acari: tetranychidae), and the cross-resistance pattern of a laboratory-selected strain. | background: phytophagous mites such as the european red mite, panonychus ulmi (koch), are serious pests in european fruit tree orchards, and a number of acaricides are frequently used to control them. spirodiclofen (envidor(®) ) has been a commonly used acaricide for several years. in the present study, european field populations collected in 2009 and 2010 were checked for their susceptibility to spirodiclofen by using discriminating dose and full dose response bioassays. results: in 2009 and 20 ... | 2011 | 21520486 |
| effect of temperature on the life-history traits of neoseiulus californicus (acari: phytoseiidae) fed on panonychus ulmi. | the developmental rate and reproductive biology of neoseiulus californicus, a generalist predator on spider mites and small insects, was investigated in the laboratory at five constant temperatures: 15, 20, 25, 30, and 34°c. the european red mite, panonychus ulmi, an important pest in korean apple orchards, was used as prey. mean developmental time and adult longevity were inversely related to temperature from 15 to 30°c. lifetime fecundity was greatest at 25°c, whereas daily fecundity was highe ... | 2012 | 22270114 |
| [spatial distribution pattern and time series dynamics of panonychus ulmi koch in an apple orchard of liaoning province, northeast china]. | panonychus ulmi koch is one of the important pest insects of apple production in china. to clarify the spatiotemporal dynamics of p. ulmi on the apple tree crowns in an apple orchard of liaoning, northeast china, an investigation with random sampling was conducted on the pest mite number at each direction and each layer of the crowns in the whole growth season from may to november 2007. the spatial distribution pattern and time series dynamics of p. ulmi were analyzed by calculating the indices ... | 2011 | 22303687 |
| south american spider mites: new hosts and localities. | in order to contribute to taxonomic information on tetranychid mites (acari: tetranychidae) in south america, surveys were conducted in brazil (15 states and the federal district) and uruguay (one department); 550 samples of 120 plant species were collected. tetranychid mite infestations were confirmed in 204 samples, and 22 species belonging to seven genera of the bryobiinae and tetranychinae subfamilies were identified on 58 different host plants. thirty-six new plant hosts were found in brazi ... | 2011 | 22224405 |
| transcriptome profiling of a spirodiclofen susceptible and resistant strain of the european red mite panonychus ulmi using strand-specific rna-seq. | the european red mite, panonychus ulmi, is among the most important mite pests in fruit orchards, where it is controlled primarily by acaricide application. however, the species rapidly develops pesticide resistance, and the elucidation of resistance mechanisms for p. ulmi has not kept pace with insects or with the closely related spider mite tetranychus urticae. the main reason for this lack of knowledge has been the absence of genomic resources needed to investigate the molecular biology of re ... | 2015 | 26581334 |
| effects of potential food sources on biological and demographic parameters of the predatory mites kampimodromus aberrans, typhlodromus pyri and amblyseius andersoni. | kampimodromus aberrans, typhlodromus pyri and amblyseius andersoni are generalist predatory mites important in controlling tetranychid and eriophyoid mites in european vineyards. they can persist by exploiting various non-prey foods when their main prey is absent or scarce. a comparative analysis of the effects of various prey and non-prey foods on the life history of these predators is lacking. in the laboratory, predatory mites were reared on herbivorous mites (panonychus ulmi, eotetranychus c ... | 2012 | 22836719 |
| panonychus from georgia: survey, taxonomical status and redescription of p. hadzhibejliae (reck, 1947) (acari, tetranychidae). | a survey of panonychus species was undertaken across georgia from 2005 to 2014 on various host plants, revealing three species: panonychus citri (mcgregor, 1916), panonychus hadzhibejliae (reck, 1947) and panonychus ulmi (koch, 1836). new hosts for p. ulmi and p. citri are recorded, buxus sempervirens, hedera colchica and prunus laurocerasus for p. ulmi and ficus carica for p. citri, whereas p. hadzhibejliae was only found on f. carica. the newly collected material also allowed us to investigate ... | 2016 | 27395141 |
| comparative biology and pesticide susceptibility of amblydromella caudiglans and galendromus occidentalis as spider mite predators in apple orchards. | the successful integrated mite management program for washington apples was based on conservation of the mite predator galendromus occidentalis (nesbitt). in the 1960s, this mite was assumed to be the only phytoseiid in washington commercial apple orchards, due to its preference for the most common mite pest of that period, tetranychus mcdanieli mcgregor, as well as its resistance to organophosphate pesticides. a recent survey of phytoseiids in washington apple found that another phytoseiid, amb ... | 2015 | 26058386 |
| the economic importance of acaricides in the control of phytophagous mites and an update on recent acaricide mode of action research. | acaricides are one of the cornerstones of an efficient control program for phytophagous mites. an analysis of the global acaricide market reveals that spider mites such as tetranychus urticae, panonychus citri and panonychus ulmi are by far the most economically important species, representing more than 80% of the market. other relevant mite groups are false spider mites (mainly brevipalpus), rust and gall mites and tarsonemid mites. acaricides are most frequently used in vegetables and fruits ( ... | 0 | 26047107 |
| age-stage two-sex life tables of panonychus ulmi (acari: tetranychidae), on different apple varieties. | to understand the influence of different apple varieties on the development and reproduction of the european red mite, panonychus ulmi (koch) (acari: tetranychidae), age-stage two-sex life tables of p. ulmi on 'fuji,' 'starkrimson delicious,' 'golden delicious,' and 'granny smith' varieties were constructed under laboratory conditions at 23 +/- 1 degrees c, 75 +/- 5% relative humidity, and a photoperiod of 16:8 (l:d) h. results showed that total development time of immature females was shorter o ... | 2013 | 24224254 |
| the impact of insecticides applied in apple orchards on the predatory mite kampimodromus aberrans (acari: phytoseiidae). | kampimodromus aberrans is an effective predatory mite in fruit orchards. the side-effects of insecticides on this species have been little studied. field and laboratory experiments were conducted to evaluate the effects of insecticides on k. aberrans. field experiments showed the detrimental effects of etofenprox, tau-fluvalinate and spinosad on predatory mites. spider mite (panonychus ulmi) populations reached higher densities on plots treated with etofenprox and tau-fluvalinate than in the oth ... | 2014 | 24114337 |
| anystis baccarum: an important generalist predatory mite to be considered in apple orchard pest management strategies. | the increasing concern over the continued use of pesticides is pressurising apple growers to look for alternatives to chemical pest control. the re-discovery, and subsequent conservation, of the beneficial predatory mite, anystis baccarum (linnaeus) (acari: anystidae), in bramley apple orchards in northern ireland offers a potential alternative control component for incorporation into integrated pest management strategies. anystis baccarum readily feeds upon economically important invertebrate p ... | 2014 | 26462829 |
| does prey preference change as a result of prey species being presented together? analysis of prey selection by the predatory mite typhlodromus pyri (acarina: phytoseiidae). | prey-selection behaviour of the phytoseiid mite typhlodromus pyri scheuten was analysed with a markovtype model of feeding-state dynamics and feeding-state dependent searching behaviour (sabelis 1981, 1986, 1989; metz and van batenburg 1985a, b). all behavioural characteristics of the predator which are independent of the feeding state were represented by one parameter. the remaining feeding-state dependent characteristics were represented by a function of the feeding state, with one parameter. ... | 1989 | 28311180 |
| vitamin a deficiency modifies response of predatory miteamblyseius potentillae to volatile kairomone of two-spotted spider mite,tetranychus urticae. | a volatile kairomone of the two-spotted spider mite,tetranychus urticae, elicits a searching response of the phytoseiid predatoramblyseius potentillae, only when the predator is reared on a carotenoid-free diet. however, after addition of crystalline β-carotene or vitamin a acetate to the predator's rearing diet this searching response was absent. because vitamin a and β-carotene are indispensable nutrients for diapause induction, the carotenoid-deficient predators increase their fitness by sear ... | 1986 | 24307118 |