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identification of the ubiquitous antioxidant tripeptide glutathione as a fruit fly semiochemical.many insects mark their oviposition sites with a host marking pheromone (hmp) to deter other females from overexploiting these sites. previous studies have identified and used hmps to manage certain fruit fly species; however, few are known for african indigenous fruit flies. the hmp of the african fruit fly, ceratitis cosyra, was identified as the ubiquitous plant and animal antioxidant tripeptide, glutathione (gsh). gsh was isolated from the aqueous extract of adult female fecal matter and cha ...201728911226
genetic correlations between life-history and behavioral traits can cause reproductive isolation.reproductive isolation may often evolve as an indirect (pleiotropic) consequence of populations adapting to different environments or habitats. for example, niches that are temporally or seasonally offset can select for organisms with different developmental characteristics. these developmental differences can inadvertently cause reproductive isolation by a variety of means including shifts in mating activity patterns. here, we show a genetic correlation between a life-history trait (development ...199928565193
correlated responses to selection for developmental period in bactrocera cucurbitae (diptera: tephritidae): time of mating and daily activity rhythms.comparisons of "time of mating" (the time copulation begins) between lines selected for short and long developmental periods have been made in the melon fly, bactrocera cucurbitae. these comparisons showed that longer development periods were associated with later initiation of mating. crosses were also made between selected lines to ascertain the genetic basis of developmental period and time of mating. comparisons of daily activity rhythms for four types of behavior (locomotion, preening, feed ...19979336086
weathering trials of amulet cue-lure and amulet methyl eugenol "attract-and-kill" stations with male melon flies and oriental fruit flies (diptera: tephritidae) in hawaii.amulet c-l (cue-lure) and amulet me (methyl eugenol) molded paper fiber "attract-and-kill" dispensers containing fipronil were tested under hawaiian weather conditions against bactrocera cucurbitae (coquillett) (melon fly) and bactrocera dorsalis (hendel) (oriental fruit fly), respectively. in paired tests (fresh versus weathered), c-l dispensers were effective for at least 77 d, whereas me dispensers were effective for at least 21 d. thus, c-l dispensers exceeded, whereas me dispensers did not ...200516334323
cage study of spinosad-based bait efficacy on bactrocera cucurbitae, dacus ciliatus, and dacus demmerezi (diptera: tephritidae) in reunion island.on reunion island, bactrocera cucurbitae (coquillett), dacus ciliatus (loew), and dacus demmerezi (bezzi) cause severe damage to cucurbit crops. the aim of the study was to test in field cages the effectiveness of synéis-appât (dow agrosciences), a spinosad-based bait (0.02% of spinosad) on both attraction and mortality of young adults (6-9 d old) of these three species. the effects of gender were also evaluated for all species whereas the effects of protein deprivation were tested with b. cucur ...201222928317
age-related response of male melon fliesdacus cucurbitae (diptera: tephritidae) to cue-lure.laboratory-reared and wild adults of the melon fly,dacus cucurbitae coquillett, were tested for response to cue-lure at various ages. virgin laboratory (4, 6, 8, 10, 12, and 14 days old) and wild (10, 12, 14, 16, 18, 20, and 22 days old) flies were released into outdoor field cages and trapped from 0800 until 1600 hr. response of males to cue-lure increased with age and corresponded with sexual maturity for each strain. females of both strains were relatively nonresponsive to cue-lure. failure t ...199124258641
an in vitro study of the non-specific esterases of the melon fly, dacus cucurbitae coq. and their reactions with organophosphate and carbamate compounds. 19768263
effect of oxytetracycline and sulphanilamide on the reproductive organs and fecundity of melon fly, dacus cucurbitae coq. 20131233354
polyteny and salivary gland secretion in the melon fly, dacus cucurbitae. 19725045175
deuteration of the melon fly attractant, cue-lure, and its effect on olfactory response and infra-red absorption. 19685733972
new synthetic lures for the male melon fly.several para-substituted derivatives of 4-phenyl-2-butanone (i) have proved to be powerful attractants for the male melon fly (dacus clucurbitae). these compounds, unlike anisylacetone, heretofore the best lure, attract even newly emerged flies. the most potent analog is 4-(p-acetoxyphenyl)-2-butanone (ii), which also strongly attracts dacus ochrosiae males.196017808098
population genetic structure of the melon fly, bactrocera cucurbitae (coquillett) (diptera: tephritidae) based on mitochondrial cytochrome oxidase (coi) gene sequences.population genetic structure of melon fly analysed with mitochondrial cytochrome oxidase i gene suggested that melon fly populations across the globe is homogeneous with non-significant variation of 0.000-0.003 base substitutions per site. test isolates representing various geographic situations across the world were placed in 26 mitochondrial haplotypes based on variations associated with a maximum of three mutational steps and the predominant haplotype i.e. h1 was present in all melon fly popu ...201222660946
monitoring resistance to spinosad in the melon fly (bactrocera cucurbitae) in hawaii and taiwan.spinosad is a natural insecticide with desirable qualities, and it is widely used as an alternative to organophosphates for control of pests such as the melon fly, bactrocera cucurbitae (coquillett). to monitor the potential for development of resistance, information about the current levels of tolerance to spinosad in melon fly populations were established in this study. spinosad tolerance bioassays were conducted using both topical applications and feeding methods on flies from field populatio ...201222629193
capture probability of released males of two bactrocera species (diptera: tephritidae) in detection traps in california.the genus bactrocera (diptera: tephritidae) includes approximately 70 polyphagous species that are major pests of fruit and vegetable crops. most bactrocera species have limited geographic distributions, but several species are invasive, and many countries operate continuous trapping programs to detect infestations. in the united states, california maintains approximately 25,000 traps (baited with male lures) specifically for bactrocera detection distributed over an area of approximately 6,400 k ...201021309224
response of melon fly (diptera: tephritidae) to weathered splat-spinosad-cue-lure.studies were conducted in hawaii to measure attraction of male melon fly, bactrocera cucurbitae (coquillett) (diptera: tephritidae), to splat-cue-lure (c-l) and splat-melo-lure (m-l) (raspberry ketone formate). direct field comparisons of splat-c-l and splat-m-l at low (5%) and high (20%) concentrations indicated few differences in attraction over a 15-wk period. subsequently, only splat-spinosad-c-l (5%) was compared with min-u-gel c-l with naled (standard used in california) in weathering stud ...201021061958
macrogeographic population structuring in the cosmopolitan agricultural pest bactrocera cucurbitae (diptera: tephritidae).the macrogeographic population structure of the agricultural pest bactrocera cucurbitae (diptera: tephritidae) was investigated in order to identify the geographic origin of the species and reconstruct its range expansion. individuals of b. cucurbitae were collected from 25 worldwide-distributed localities (n = 570) and genotyped at 13 microsatellite loci. the bayesian clustering reveals that b. cucurbitae can be subdivided into five main groups corresponding to populations from (i) the african ...201020561200
identification and preliminary characterization of chemosensory perception-associated proteins in the melon fly bactrocera cucurbitae using rna-seq.an investigation into proteins involved in chemosensory perception in the melon fly, bactrocera cucurbitae (diptera: tephritidae) is described here using a newly generated transcriptome dataset. the melon fly is a major agricultural pest, widely distributed in the asia-pacific region and some parts of africa. for this study, a transcriptome dataset was generated using rna extracted from 4-day-old adult specimens of the melon fly. the dataset was assembled and annotated via gene ontology (go) ana ...201626752702
assessment of sauromatum guttatum lectin toxicity against bactrocera cucurbitae.lectins are proteins that bind specifically to foreign glycans. due to this binding property, these molecules have potential application as bioinsecticidal tools replacing conventional chemical insecticides. the present study involved purification of phytolectin from the tubers of sauromatum guttatum by affinity chromatography on asialofetuin-linked silica matrix. the purity of the sample was checked by sds-page at ph 8.3. purified lectin was incorporated in the artificial diet of a dipteran mod ...201526688959
effects of the juvenile hormone analogue methoprene and dietary protein on male melon fly bactrocera cucurbitae (diptera: tephritidae) mating success.the effect of access to dietary protein (p) and the topical application of a juvenile hormone analogue (methoprene (m)) on mating behaviour of male melon fly bactrocera cucurbitae was assessed in the laboratory and in field cages. age, dietary protein and methoprene application increased the mating success and influenced the mating behaviour. treatment with methoprene (m+) to protein-deprived (p-) males had only a modest effect on the acceleration of sexual maturity, but application of methopren ...201020438735
the clock gene cryptochrome of bactrocera cucurbitae (diptera: tephritidae) in strains with different mating times.differences in mating time between populations can give rise to premating reproductive isolation. tephritid fruit flies exhibit large variation in mating time among intra- or inter-specific populations. we previously cloned the clock gene period from two strains of melon fly, bactrocera cucurbitae; in one the individuals mate early during the day, whereas in the other the individuals mate later. these strains were originally established by divergent artificial selection for developmental time, ' ...201020010960
new contributions towards the understanding of the phylogenetic relationships among economically important fruit flies (diptera: tephritidae).fruit flies (diptera: tephritidae) are a species-rich and economically important group. the phylogenetic relationships among the many taxa are still to be fully resolved and the monophyly of several groups is still to be confirmed. this paper reports a study of the phylogenetic relationships among 23 economically important tephritid species (representing several major lineages of the family) which examines the sequence of a region of mitochondrial dna encompassing the cytb, trna(ser) and nd1 gen ...200616768816
population susceptibility to insecticides and the development of resistance in bactrocera cucurbitae (diptera: tephritidae).excessive insecticide applications are commonly used to manage bactrocera cucurbitae coquillett in china. resistance status, resistance development trends, and patterns of cross-resistance to insecticides in b. cucurbitae were investigated. among 21 populations from hainan island, two populations expressed high resistance to beta-cypermethrin; seven, eight, and ten populations expressed intermediate resistance to spinosad, avermectin, and beta-cypermethrin, respectively; four, six, one, five, an ...201626668351
disruption of darna pallivitta (lepidoptera: limacodidae) by conventional and mobile pheromone deployment.identification of the darna pallivitta (moore) pheromone component n-butyl (e)-7,9-decadienoate (e7,9-10:coon-bu) has made it possible to investigate communication disruption to control this lepidopteran pest. conventional communication disruption trials showed marked decreases in the mean number of male moths captured in e7,9-10:coonbu-treated fields compared with control fields. for traps baited with e7,9-10:coonbu, percent disruptions were 94.4% and 92.1% for septa (1 g pheromone/ha, 1-wk tri ...201526078301
eradication of the melon fly, bactrocera cucurbitae, in japan: importance of behavior, ecology, genetics, and evolution.the melon fly, bactrocera cucurbitae, is a destructive insect of cucurbit and other fruits. it invaded the southwestern islands of japan from 1919 to 1974. the sterile insect technique (sit) was successfully applied from 1972 to 1993 to eradicate the melon fly. technical research into sit functions, such as suppression of density, mass-rearing, sterilization, shipment, release, evaluation of efficacy, and quality control of mass-reared insects, was conducted for this eradication project. fundame ...200414651467
polytene chromosome maps of the melon fly bactrocera cucurbitae (diptera: tephritidae).standard photographic maps of the polytene chromosomes are presented for the melon fly bactrocera cucurbitae, a serious pest of fleshy fruits and vegetables. five larval salivary gland polytene chromosomes (10 polytene arms) were isolated, and their characteristic features and landmarks have been recognized. banding patterns of each of the polytene arms are presented, where variation in band intensity and puffs appear to reflect fundamental differences in chromosomes. the whole polytene genome h ...200212502263
the period gene and allochronic reproductive isolation in bactrocera cucurbitae.clock genes that pleiotropically control circadian rhythm and the time of mating may cause allochronic reproductive isolation in the melon fly bactrocera cucurbitae (coquillett) (diptera: tephritidae). flies with a shorter circadian period (ca. 22 h of locomotor activity rhythm) mated 5 h earlier in the day than those with a longer circadian period (ca. 30 h). mate-choice tests demonstrated significant pre-mating isolation between populations with short and long circadian periods. pre-mating iso ...200212495490
parasitism, emergence, and development of spalangia endius (hymenoptera: pteromalidae) in pupae of different ages of bactrocera cucurbitae (diptera: tephritidae).the wasp spalangia endius walker (hymenoptera: pteromalidae) is a major parasitoid of the pupae of fruit flies, which are a common agricultural pest. an understanding of this intricate host-parasitoid interaction could provide basic information necessary for the sustainable integrated biological control of fruit flies. in this study, we investigated the effect of s. endius on different-aged pupae of the melon fly bactrocera cucurbitae coquillett by using choice and nonchoice tests under laborato ...201525700538
benzyl acetates as attractants for the male oriental fruit fly, dacus dorsalis, and the male melon fly, dacus cucurbitae.fifty compounds related to benzyl acetate were evaluated quantitatively as attractants to the male oriental fruit fly (dacus dorsalis) and the male melon fly (dacus cucurbitae). thienylmethyl acetate was nearly as attractive as benzyl acetate to both species, but cyclohexylmethyl acetate was completely unattractive, emphasizing the role of the planar aromatic ring in receptor interaction. although benzyl acetate was equally attractive to both species, para substituents invariably reduced attract ...198616593663
olfactory receptors in the melon fly dacus cucurbitae and the oriental fruit fly dacus dorsalis.male melon flies (dacus cucurbitae) from a colony in hawaii were evaluated for limit of response to the olfactory stimulant raspberry ketone and to more than 40 related molecules. the results were compared with the limits of response of oriental fruit flies (dacus dorsalis) under identical conditions. the nature of the response of the two species to attractive compounds appeared to be identical with regard to orientation, searching, pulsating mouthparts, and compulsive feeding. however, there wa ...198316593321
combining cue-lure and methyl eugenol in traps significantly decreases catches of most bactrocera, zeugodacus and dacus species (diptera: tephritidae: dacinae) in australia and papua new guinea.male fruit fly attractants, cue-lure (cl) and methyl eugenol (me), are important in the monitoring and control of pest fruit fly species. species respond to cl or me but not both, and there are conflicting reports on whether combining cl (or its hydroxy analogue raspberry ketone) and me decreases their attractiveness to different species. fruit fly monitoring programs expend significant effort using separate cl and me traps and avoiding lure cross-contamination, and combining the two lures in on ...201729272411
implementing a spinosad-based local bait station to control bactrocera cucurbitae (diptera: tephritidae) in high rainfall areas of reunion island.three species of fruit flies cause serious damage to cucurbit crops on reunion island: bactrocera cucurbitae (diptera: tephritidae) (coquillett 1899), dacus ciliatus (loew 1901), and dacus demmerezi (bezzi 1917). to control them, a program of agroecological management of cucurbit flies has been implemented based on the application of synéis-appât, especially spot sprays on corn borders. however, the high rainfall on reunion island limits the long-term efficiency of the bait; in addition, this me ...201525688089
circadian rhythm and time of mating in bactrocera cucurbitae (diptera: tephritidae) selected for age at reproduction.chrono-biological traits were changed by selecting for life-history traits via a genetic linkage controlling both time-related behavioural and life-history traits. behavioural traits were compared between lines selected for young (y-lines) and old (o-lines) age at reproduction in the melon fly, bactrocera cucurbitae (coquillett). adults from o-lines, which survive longer than flies from y-lines, mated later in the day and had a longer period of circadian rhythm in the locomotor activity than tho ...200211920139
a novel polysaccharide in insects activates the innate immune system in mouse macrophage raw264 cells.a novel water-soluble polysaccharide was identified in the pupae of the melon fly (bactrocera cucurbitae) as a molecule that activates the mammalian innate immune response. we attempted to purify this innate immune activator using nitric oxide (no) production in mouse raw264 macrophages as an indicator of immunostimulatory activity. a novel acidic polysaccharide was identified, which we named "dipterose", with a molecular weight of 1.01 × 10(6) and comprising nine monosaccharides. dipterose was ...201425490773
methoprene application and diet protein supplementation to male melon fly, bactrocera cucurbitae, modifies female remating behavior.methoprene (an analogue of juvenile hormone) application and feeding on a protein diet is known to enhance male melon fly, bactrocera cucurbitae coquillett (diptera: tephritidae), mating success. in this study, we investigated the effect of these treatments on male b. cucurbitae's ability to inhibit female remating. while 14-d-old females were fed on protein diet, 6-d-old males were exposed to one of the following treatments: (i) topical application of methoprene and fed on a protein diet; (ii) ...201424376160
genetic and cytogenetic characterization of genetic sexing strains of bactrocera dorsalis and bactrocera cucurbitae (diptera: tephritidae).in the current study, we performed genetic and cytogenetic analyses of two genetic sexing strains (gsss), one for bactrocera dorsalis s.s. and one for melon fly, bactrocera cucurbitae coquillett, the first such strains ever constructed in these species. in both strains, the genetic sexing mechanism is based on a pupal color dimorphism (white or brown) and is the result of a reciprocal translocation between the y chromosome and the autosome bearing the white pupae (wp) locus. based on genetic ana ...201323786092
species diversity within a community of the curcurbit fruit flies bactrocera cucurbitae, dacus ciliatus, and dacus demmerezi roosting in corn borders near cucurbit production areas of reunion island.in order to better control fruit flies (diptera: tephritidae) attacking cucurbitaceae on reunion island (21°6 s/ 55°36 e), biological characteristics (seasonal fluctuation, relative abundance, sex ratio) of communities roosting in corn borders were investigated. the study was conducted in austral summer across a range of altitudes (750-1150 m) corresponding to the main areas of cucurbit cropping. living adults were recorded roosting on corn planted within or around cucurbit fields. results showe ...201222958393
genetic trade-off between early fecundity and longevity in bactrocera cucurbitae (diptera: tephritidae).the response to selection on age at reproduction was measured to test for a genetic trade-off between early fecundity and longevity in the melon fly bactrocera cucurbitae (coquillett). three replicate lines were selected for propagation by breeding from young (y-lines) and old (o-lines) adults, respectively. selection was continued for 24 and 9 generations for y- and o-lines, respectively. females from o-lines lived longer than y-line females as an indirect response to selection, indicating that ...199716397642
accumulation ofdendrobium superbum (orchidaceae) fragrance in the rectal glands by males of the melon fly,dacus cucurbitae.4-(4-hydroxyphenyl)-2-butanone was characterized from flowers of the orchiddendrobium superbum as a specific attractant factor for the male melon fly,dacus cucurbitae. the male flies compulsively licked the flower surface and sequestered the compound in significant quantities in their rectal glands. the compound was detected within 6 hr after ingestion and was retained for more than six days in the rectal gland sacs.199324249012
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