| wolbachia infections and superinfections in cytoplasmically incompatible populations of the european cherry fruit fly rhagoletis cerasi (diptera, tephritidae). | wolbachia is an obligately intracellular, maternally inherited bacterium which has been detected in many arthropods. wolbachia infections disperse in host populations by mechanisms such as cytoplasmic incompatibility (ci). ci leads to embryonic mortality which occurs when infected males mate with uninfected females or females with a different wolbachia strain. populations of the european cherry fruit fly rhagoletis cerasi (diptera, tephritidae) were found to be infected by two different wolbachi ... | 2002 | 12406252 |
| wolbachia transfer from rhagoletis cerasi to drosophila simulans: investigating the outcomes of host-symbiont coevolution. | wolbachia is an endosymbiont of diverse arthropod lineages that can induce various alterations of host reproduction for its own benefice. cytoplasmic incompatibility (ci) is the most common phenomenon, which results in embryonic lethality when males that bear wolbachia are mated with females that do not. in the cherry fruit fly, rhagoletis cerasi, wolbachia seems to be responsible for previously reported patterns of incompatibility between populations. here we report on the artificial transfer o ... | 2004 | 14711652 |
| wolbachia-induced cytoplasmic incompatibility as a means for insect pest population control. | biological control is the purposeful introduction of parasites, predators, and pathogens to reduce or suppress pest populations. wolbachia are inherited bacteria of arthropods that have recently attracted attention for their potential as new biocontrol agents. wolbachia manipulate host reproduction by using several strategies, one of which is cytoplasmic incompatibility (ci) [stouthamer, r., breeuwer, j. a. j. & hurst, g. d. d. (1999) annu. rev. microbiol. 53, 71-102]. we established wolbachia-i ... | 2004 | 15469918 |
| genetic and cytogenetic analysis of the fruit fly rhagoletis cerasi (diptera: tephritidae). | the european cherry fruit fly, rhagoletis cerasi, is a major agricultural pest for which biological, genetic, and cytogenetic information is limited. we report here a cytogenetic analysis of 4 natural greek populations of r. cerasi, all of them infected with the endosymbiotic bacterium wolbachia pipientis. the mitotic karyotype and detailed photographic maps of the salivary gland polytene chromosomes of this pest species are presented here. the mitotic metaphase complement consists of 6 pairs of ... | 2008 | 18545272 |
| hidden wolbachia diversity in field populations of the european cherry fruit fly, rhagoletis cerasi (diptera, tephritidae). | the european cherry fruit fly rhagoletis cerasi has been a field model for cytoplasmic incompatibility since the mid 1970s. two wolbachia strains were detected in this tephritid species and wcer2 was described as the ci inducing agent dividing european populations into two unidirectional incompatible groups, i.e. southern females produce viable offspring with northern males, whereas the reciprocal cross results in incompatibility. we detected three new wolbachia strains by sequencing a multitude ... | 2009 | 19732336 |
| reduced-risk management of rhagoletis cerasi flies (host race prunus) in combination with a preliminary phenological model. | seasonal flight activity of rhagoletis cerasi (l.) (diptera: tephritidae) adults was monitored using yellow sticky traps at sweet cherry orchards under different management regimes in bursa, northwestern turkey, during 1997-1998. in the reduced-risk backyard orchards, soil ploughing in the fall or spring to destroy the pupae was combined with a single application of an insecticide, while conventionally managed orchards received six to seven insecticide applications for controlling adults. traps ... | 2006 | 20298111 |
| permanent genetic resources added to molecular ecology resources database 1 may 2009-31 july 2009. | this article documents the addition of 512 microsatellite marker loci and nine pairs of single nucleotide polymorphism (snp) sequencing primers to the molecular ecology resources database. loci were developed for the following species: alcippe morrisonia morrisonia, bashania fangiana, bashania fargesii, chaetodon vagabundus, colletes floralis, coluber constrictor flaviventris, coptotermes gestroi, crotophaga major, cyprinella lutrensis, danaus plexippus, fagus grandifolia, falco tinnunculus, fle ... | 2009 | 21564933 |
| the hitchhiker's guide to europe: the infection dynamics of an ongoing wolbachia invasion and mitochondrial selective sweep in rhagoletis cerasi. | wolbachia is a maternally inherited and ubiquitous endosymbiont of insects. it can hijack host reproduction by manipulations such as cytoplasmic incompatibility (ci) to enhance vertical transmission. horizontal transmission of wolbachia can also result in the colonization of new mitochondrial lineages. in this study, we present a 15-year-long survey of wolbachia in the cherry fruit fly rhagoletis cerasi across europe and the spatiotemporal distribution of two prevalent strains, wcer1 and wcer2, ... | 2016 | 26846713 |
| uncovering wolbachia diversity upon artificial host transfer. | the common endosymbiotic wolbachia bacteria influence arthropod hosts in multiple ways. they are mostly recognized for their manipulations of host reproduction, yet, more recent studies demonstrate that wolbachia also impact host behavior, metabolic pathways and immunity. besides their biological and evolutionary roles, wolbachia are new potential biological control agents for pest and vector management. importantly, wolbachia-based control strategies require controlled symbiont transfer between ... | 2013 | 24376534 |
| a novel cry2ab gene from the indigenous isolate bacillus thuringiensis subsp. kurstaki. | a novel cry2ab gene was cloned and sequenced from the indigenous isolate of bacillus thuringiensis subsp. kurstaki. this gene was designated as cry2ab25 and its sequence revealed an open reading frame of 1,902 bp encoding a 633 aa protein with calculated molecular mass of 70 kda and pi value of 8.98. the amino acid sequence of the cry2ab25 protein was compared with previously known cry2ab toxins, and the phylogenetic relationships among them were determined. the deduced amino acid sequence of th ... | 2012 | 22297230 |
| [a case of accidental myiasis caused by rhagoletis cerasi larvae]. | | 1971 | 5147564 |
| evaluation of trap types and food attractants for rhagoletis cerasi (diptera: tephritidae). | trapping experiments were conducted during the period of flight activity of the cherry fruit fly rhagoletis cerasi l. in the area of thessaloniki, northern greece, during the years 1993-1997 to test several traps alone and in combination with different food attractants. yellow sticky-coated visual traps were more effective than mcphail-type traps baited with different food attractants. of the visual traps, the most effective was the yellow rebell trap. the rebell trap, provided with a dispenser ... | 2000 | 10902363 |
| cross-amplified microsatellites in the european cherry fly, rhagoletis cerasi: medium polymorphic-highly informative markers. | the european cherry fruit fly, rhagoletis cerasi (diptera: tephritidae), is a major pest of cherries in europe and parts of asia. despite its big economic significance, there is a lack of studies on the genetic structure of its natural populations. knowledge about an insect pest on molecular, genetic and population levels facilitates the development of environmentally friendly control methods. in this study, we present the development of 13 microsatellite markers for r. cerasi, through cross-spe ... | 2011 | 20609274 |
| physiological and biological patterns of a highland and a coastal population of the european cherry fruit fly during diapause. | adult emergence of univoltine temperate insect species and its synchronization with specific host phenological stages is mainly regulated by obligatory pupal diapause. although a few studies have investigated the factors affecting diapause intensity, little attention has been paid to the physiological alterations and metabolic regulation that take place during diapause. here, we describe differences in diapause between a highland and a coastal greek population of the european cherry fruit fly rh ... | 2011 | 20933516 |
| prolonged pupal dormancy is associated with significant fitness cost for adults of rhagoletis cerasi (diptera: tephritidae). | in temperate areas, dormancy (diapause and/or quiescence) enables herbivorous insect species to persist and thrive by synchronizing growth and reproduction with the seasonal phenology of their host plants. within-population variability in dormancy increases survival chances under unpredictable environmental changes. however, prolonged dormancy may be costly, incurring trade-offs in important adult fitness traits such as life span and reproduction. we used the european cherry fruit fly, rhagoleti ... | 2012 | 22684113 |
| dispersal of rhagoletis cerasi in commercial cherry orchards: efficacy of soil covering nets for cherry fruit fly control. | demand for organic cherries offers producers a premium price to improve their commercial viability. organic standards require that producers find alternatives to pesticides. soil treatments to control the european cherry fruit fly rhagoletis cerasi (l.) (diptera: tephrididae) appear to be an attractive option. however, soil treatments can only be effective if the migration of flies is low, because mature flies may migrate from near-by trees for oviposition. to examine the general potential of so ... | 2013 | 26466801 |
| evidence for a recent horizontal transmission and spatial spread of wolbachia from endemic rhagoletis cerasi (diptera: tephritidae) to invasive rhagoletis cingulata in europe. | the widespread occurrence of wolbachia in arthropods and nematodes suggests that this intracellular, maternally inherited endosymbiont has the ability to cross species boundaries. however, direct evidence for such a horizontal transmission of wolbachia in nature is scarce. here, we compare the well-characterized wolbachia infection of the european cherry fruit fly, rhagoletis cerasi, with that of the north american eastern cherry fruit fly, rhagoletis cingulata, recently introduced to europe. mo ... | 2013 | 23844658 |
| diapause termination of rhagoletis cerasi pupae is regulated by local adaptation and phenotypic plasticity: escape in time through bet-hedging strategies. | persistence and thriving of univoltine, herbivore insect species of the temperate zone rely on obligate diapause response that ensures winter survival and synchronization with host phenology. we used a stenophagous fruit fly (rhagoletis cerasi) with obligate pupae diapause to determine genetic and environmental effects on diapause intensity of geographically isolated populations with habitat heterogeneity. pupae from two greek and one german populations with various gene flow rates were exposed ... | 2014 | 24192292 |
| rhagoletis cerasi: oviposition reduction effects of oil products. | the european cherry fruit fly, rhagoletis cerasi (l.) (diptera: tephritidae), is a highly destructive pest. methods to control it are limited and alternatives are needed. observations of cherry fruit flies suggest that females exert much effort to penetrate cherries at color change stage (from green to yellow) for oviposition. therefore, the question arose as to whether a physical barrier on the fruit surface could reduce oviposition. the effects of different commercial horticultural oil product ... | 2014 | 26462686 |
| a new visual trap for rhagoletis cerasi (l.) (diptera: tephritidae). | the european cherry fruit fly, rhagoletis cerasi (l.) (diptera: tephritidae), is the most important pest of sweet cherries in europe. the aim of our experiments was to develop a new, cost-efficient, lead chromate-free and more eco-friendly trap for monitoring and mass trapping of r. cerasi. five different-colored yellow panels and three different trap shapes were compared to a standard rebell(®) amarillo trap in three experimental orchards in 2012. trap color f, with a strong increase in reflect ... | 2014 | 26462825 |
| description of rhagoletis cerasi (diptera: tephritidae) pupal developmental stages: indications of prolonged diapause. | the european cherry fruit fly, rhagoletis cerasi (l.) (diptera: tephritidae), is the key pest of sweet and sour cherries in many european countries and west asia. it is a univoltine species of the west palaearctic zone that undergoes obligatory pupal diapause. in this study, the development of r. cerasi pupae that were brought to an optimum temperature for postdiapause development following a long chilling period is described. the six most representative developmental stages within the puparium ... | 2014 | 25399427 |
| validation of individual-based markov-like stochastic process model of insect behavior and a "virtual farm" concept for enhancement of site-specific ipm. | the paper reports application of a markov-like stochastic process agent-based model and a "virtual farm" concept for enhancement of site-specific integrated pest management. conceptually, the model represents a "bottom-up ethological" approach and emulates behavior of the "primary ipm actors"-large cohorts of individual insects-within seasonally changing mosaics of spatiotemporally complex faming landscape, under the challenge of the local ipm actions. algorithms of the proprietary pestonfarm mo ... | 2016 | 27602000 |
| wolbachia in parasitoids attacking native european and introduced eastern cherry fruit flies in europe. | the eastern cherry fruit fly, rhagoletis cingulata loew (diptera: tephritidae), is an economically important pest of cherries in north america. in 1983 it was first reported in europe where it shares its ecological niche with the native european cherry fruit fly, rhagoletis cerasi l. (diptera: tephritidae). their coexistence in europe led to the recent horizontal transmission of the wolbachia strain wcer1 from r. cerasi to r. cingulata horizontal wolbachia transmission is mediated by either shar ... | 2016 | 27744314 |
| wolbachia in parasitoids attacking native european and introduced eastern cherry fruit flies in europe. | the eastern cherry fruit fly, rhagoletis cingulata loew (diptera: tephritidae), is an economically important pest of cherries in north america. in 1983 it was first reported in europe where it shares its ecological niche with the native european cherry fruit fly, rhagoletis cerasi l. (diptera: tephritidae). their coexistence in europe led to the recent horizontal transmission of the wolbachia strain wcer1 from r. cerasi to r. cingulata horizontal wolbachia transmission is mediated by either shar ... | 2016 | 28028089 |
| the eggshell of the cherry fly rhagoletis cerasi. | one of the major pests in greek cherry orchards is the cherry fly rhagoletis cerasi (diptera: tephritidae). in order to complete our comparative work on the chorion assembly of other representatives of the fruit flies (e.g. ceratitis capitata and dacus oleae) we studied eggshell morphogenesis in the cherry fly. the oocyte is surrounded by several distinct layers which are produced during choriogenesis. the eggshell consists of the vitelline membrane, a fibrous layer of possible water-proofing fu ... | 1991 | 18621185 |
| bait spray for control of european cherry fruit fly: an appraisal based on semi-field and field studies. | the european cherry fruit fly, rhagoletis cerasi, is the major insect pest of sweet and tart cherries. its management is becoming increasingly difficult in many countries as formerly effective but broad-spectrum insecticides are removed from the market. with the objective of identifying suitable and environmentally safe alternatives, we investigated bait sprays containing two families of plant-derived insecticides: azadirachtins (neemazal-t(®) and neemazal-t/s(®) ) and pyrethrins (spruzit neu(®) ... | 2014 | 23893955 |
| microsatellite and wolbachia analysis in rhagoletis cerasi natural populations: population structuring and multiple infections. | rhagoletis cerasi (diptera: tephritidae) is a major pest of sweet and sour cherries in europe and parts of asia. despite its economic significance, there is a lack of studies on the genetic structure of r. cerasi populations. elucidating the genetic structure of insects of economic importance is crucial for developing phenological-predictive models and environmental friendly control methods. all natural populations of r. cerasi have been found to harbor the endosymbiont wolbachia pipientis, whic ... | 2014 | 24963388 |
| integrated management of european cherry fruit fly rhagoletis cerasi (l.): situation in switzerland and europe. | the european cherry fruit fly, rhagoletis cerasi (l.) (diptera: tephritidae), is a highly destructive pest. the low tolerance for damaged fruit requires preventive insecticide treatments for a marketable crop. the phase-out of old insecticides threatens cherry production throughout the european union (eu). consequently, new management techniques and tools are needed. with the increasing number of dwarf tree orchards covered against rain to avoid fruit splitting, crop netting has become a viable, ... | 2012 | 26466721 |
| effect of altitude on seasonal flight activity of rhagoletis cerasi flies (diptera: tephritidae). | the effect of altitudinal variation on the seasonal flight activity of rhagoletis cerasi (linnaeus) flies was evaluated along an altitudinal gradient from 150 to 1170 m in mount uludag, northwestern turkey. the predicted dates of fly emergence, flight duration and dates of 5%, 50% and 95% cumulative fly catches at various altitudes were estimated from a degree-day model. degree-day predictions were compared with those obtained from observations made with yellow sticky traps. the observed and pre ... | 2006 | 16923201 |
| incipient evolution of wolbachia compatibility types. | cytoplasmic incompatibility (ci) is induced in arthropods by the maternally inherited bacterium wolbachia. when infected males mate with uninfected females or with females bearing a different wolbachia variant, paternal chromosomes behave abnormally and embryos die. this pattern can be interpreted as resulting from two bacterial effects: one (usually termed mod, for modification) would affect sperm and induce embryo death, unless wolbachia is also present in the egg, which implies the existence ... | 2004 | 15521450 |