Publications

influence of constant temperatures on life history parameters of the cotton aphid, aphis gossypii, infesting cotton.	laboratory clip-cage studies were conducted to quantify the temperature-dependent development, survivorship, and reproduction and to generate life history characteristics and population growth parameters of the cotton aphid, aphis gossypii glover, on phenologically standardized greenhouse-grown cottons at 10, 15, 20, 25, 30, and 35 degrees c. the developmental thresholds were estimated to be 6.3, 6.7, 5.9, 5.9, and 6.3 degrees c for first to fourth instars and for total nymphal development, resp ...	2007	17716456
complete nucleotide sequence of a japanese isolate of chrysanthemum virus b (genus carlavirus).	the complete nucleotide sequence of a chrysanthemum virus b isolate from japan (cvb-s) has been determined. the genomic rna of cvb-s is 8,990 nucleotides long, excluding the poly(a) tail and, like that of other carlaviruses, contains six open reading frames (orfs). multiple alignment and phylogenetic analyses indicated that the phylogenetic relationship among members of the genus carlavirus is very diverse, with phlox virus s being the closest relative of cvb. in aphid transmission tests, cvb-s ...	2007	17726637
2-tridecanone: a naturally occurring insecticide from the wild tomato lycopersicon hirsutum f.glabratum.	a nonalkaloid insecticide was isolated from the wild tomato lycopersicon hirsutum f. glabratum and identified as 2-tridecanone, a compound 72 times more abundant in the wild tomato than in the cultivated tomato l. esculentum. lepidopterous larvae (manduca sexta and heliothis zea) and aphids (aphis gossypii) died when confined on 2-tridecanone-treated filter paper.	1980	17729870
transmission of internal cork of sweet potato by the cotton aphid, aphis gossypii glover.		1958	17781179
the primary foodplant of the melon aphid.		1925	17787201
transgenic bacillus thuringiensis (bt) cotton (gossypium hirsutum) allomone response to cotton aphid, aphis gossypii, in a closed-dynamics co(2) chamber (cdcc).	allocation of allomones of transgenic bacillus thuringiensis gossypium hirsutum (bt cotton) (cv. gk-12) and non-bt-transgenic cotton (cv. simian-3) grown in elevated co(2) in response to infestation by cotton aphid, aphis gossypii glover, was studied in a closed-dynamics co(2) chamber. significant increases in foliar condensed tannin and carbon/nitrogen ratio for gk-12 and simian-3 were observed in elevated co(2) relative to ambient co(2,) as partially supported by the carbon nutrient balance hy ...	2007	17805479
quantitative detection of citrus tristeza virus in citrus and aphids by real-time reverse transcription-pcr (taqman).	a quantitative and multiplex real-time rt-pcr assay was developed to detect citrus tristeza virus (ctv) along with plant mrna, which serves as an internal control to ascertain rna extraction quality. the real-time technique was validated against 39 ctv strains from around the world as well as with the aphid vector, aphis gossypii, given a 48 h acquisition access period on a ctv source plant. the assay was effective for quantitation of the viral template in infected plants and in single aphids. c ...	2008	17888522
temporal synergism can enhance carbamate and neonicotinoid insecticidal activity against resistant crop pests.	piperonyl butoxide (pbo) effectively synergises synthetic pyrethroids, rendering even very resistant insect pests susceptible, provided a temporal element is included between exposure to synergist and insecticide. this concept is now applied to carbamates and neonicotinoids.	2008	17926308
[fertility life table of aphidius colemani viereck (hymenoptera: braconidae, aphidiinae) on aphis gossypii glover (hemiptera: aphididae)].	the intrinsic rate of increase of a parasitoid related to its hosts play an important role in biological control programs. in this work, fertility of the parasitoid aphidius colemani viereck was evaluated on aphis gossypii glover by means of a fertility life table. to determine the immature mortality, the development time and the sex ratio, 12 mated females of a. colemani (24h old), and 240 nymphs of a. gossypii (3 days old) were used. to evaluate fertility 15 mated females (24h old) were used. ...	2007	17934617
[effects of nitrogen fertilization in cotton crop on aphis gossypii glover (hemiptera: aphididae) biology].	the cotton aphid, aphis gossypii glove, is one of the pests of cotton crop and its relation with the host seem to depend on the amount of nitrogen available to the plant. the biology of a. gossypii using different cotton nitrogen fertility regimes was studied under greenhouse conditions, in dourados, ms. a completely randomized design with nine replications in a factorial scheme (2x4x2)+1 was used. two nitrogen sources (sulphate of ammonium and urea), four doses of nitrogen (50, 100, 150 and 200 ...	2013	18060302
the influence of natural enemies on wing induction in aphis fabae and megoura viciae (hemiptera: aphididae).	previous studies have shown that the aphid species, aphis fabae scopoli and megoura viciae buckton, do not produce winged offspring in the presence of natural enemies, in contrast to results for the pea aphid (acyrthosiphon pisum (harris)) and the cotton aphid (aphis gossypii glover); but these studies did not involve exposing aphids directly to natural enemies. we exposed colonies of both a. fabae and m. viciae to foraging lacewing (chrysoperla carnea (stephens)) larvae and found that the preda ...	2008	18076776
selection of entomopathogenic fungi for aphid control.	twelve strains of entomopathogenic fungi such as lecanicillium lecanii, paecilomyces farinosus, beauveria bassiana, metarhizium anisopliae, cordyceps scarabaeicola, and nomuraea rileyi were screened for aphid control. at 25 degrees c and 75% relative humidity (rh), among tested entomopathogenic fungi, l. lecanii 41185 showed the highest virulent pathogenicity for both myzus persicae and aphis gossypii, and their control values were both nearly 100% 5 and 2 d after treatment, respectively. moreov ...	2007	18215637
leaf surface factors of transgenic bt cotton associated with the feeding behaviors of cotton aphids: a case study on non-target effects.	the present paper reports case study results of the risk assessment of transgenic bt cotton on a non-target pest, cotton aphid, aphis gossypii. several types of techniques, i.e., electrical penetration graph (epg), light and electron microscopy, bioassays and chemical analysis, were applied to investigate physical and chemical leaf factors of 2 transgenic bt cotton lines (gk12 and gk19) and their parental non-bt cotton line (simian3) associated with searching and feeding behaviors of cotton aphi ...	2008	18239893
genotypic diversity of the cotton-melon aphid aphis gossypii (glover) in tunisia is structured by host plants.	the study of intraspecific variation with respect to host plant utilization in polyphagous insects is crucial for understanding evolutionary patterns of insect-plant interactions. aphis gossypii (glover) is a cosmopolitan and extremely polyphagous aphid species. if host plant species or families constitute selective regimes to these aphids, genetic differentiation and host associated adaptation may occur. in this study, we describe the genetic structure of a. gossypii collected in six localities ...	2008	18257956
spectral response of cotton aphid- (homoptera: aphididae) and spider mite- (acari: tetranychidae) infested cotton: controlled studies.	remote sensing is a precision tool that can detect plant health. ground-based methods in small-scale experiments were used to explore the applicability of this technology for detection of arthropod-damaged cotton and to find useful indices or wavelengths for detecting arthropod-damaged cotton. individual leaves of greenhouse-grown cotton plants and cotton plants in the field were infested with populations of cotton aphids, spider mites, and aphids + mites. several sets of reflectance measurement ...	2007	18284775
how accurate is the phenotype? - an analysis of developmental noise in a cotton aphid clone.	the accuracy by which phenotype can be reproduced by genotype potentially is important in determining the stability, environmental sensitivity, and evolvability of morphology and other phenotypic traits. because two sides of an individual represent independent development of the phenotype under identical genetic and environmental conditions, average body asymmetry (or "fluctuating asymmetry") can estimate the developmental instability of the population. the component of developmental instability ...	2008	18294398
rise and fall of cotton aphid (hemiptera: aphididae) populations in southeastern cotton production systems.	the impact of natural enemies on cotton aphid, aphis gossypii glover (hemiptera: aphididae), populations in cotton, gossypium hirsutum l., production systems in the southeastern united states was evaluated over 3 yr in irrigated commercial cotton fields. fungal epizootics caused by the entomopathogen neozygites fresenii (nowakowski) batko reduced aphid numbers to subthreshold levels in 1999, 2000, and 2001 and occurred consistently in early to mid-july in all 3 yr. scymnus spp. were the most abu ...	2008	18330112
interactive effects of elevated co2 and cotton cultivar on tri-trophic interaction of gossypium hirsutum, aphis gossyppii, and propylaea japonica.	information on the effects of enriched co2 on both the chemical composition of plants and the consequences of such changes for performance of a herbivore and its predator is an important first step in understanding the responses of plants and insects to global environmental change. we examined interactions across three trophic levels, cotton, gossypium hirsutum, an aphid herbivore, aphis gossypii glover, and a coccinellid predator, propylaea japonica (thunberg), as affected by elevated co2 conce ...	2008	18348793
tri-trophic interactions between bt cotton, the herbivore aphis gossypii glover (homoptera: aphididae), and the predator chrysopa pallens (rambur) (neuroptera: chrysopidae).	tri-trophic impacts of transgenic bacillus thuringiensis (bt) cotton gk12 and nucotn 99b were studied using a predator, the great lacewing chrysopa pallens (rambur), and its prey, the cotton aphid aphis gossypii glover, in laboratory feeding experiments. the parental nontransgenic cotton cultivar of gk12 was used as control. the predator was fed with uniform (aphids from a single cultivar) or mixed prey (aphids from the three cotton cultivars provided on alternate days). mortality and developmen ...	2008	18348819
field-scale roles of density, temperature, nitrogen, and predation on aphid population dynamics.	robust analyses of noisy, stage-structured, irregularly spaced, field-scale data incorporating multiple sources of variability and nonlinear dynamics remain very limited, hindering understanding of how small-scale studies relate to large-scale population dynamics. we used a novel, complementary bayesian and frequentist state-space model analysis to ask how density, temperature, plant nitrogen, and predators affect cotton aphid (aphis gossypii) population dynamics in weekly data from 18 field-yea ...	2008	18409442
complete sequence analysis reveals two distinct poleroviruses infecting cucurbits in china.	the complete rna genomes of a chinese isolate of cucurbit aphid-borne yellows virus (cabyv-chn) and a new polerovirus tentatively referred to as melon aphid-borne yellows virus (mabyv) were determined. the entire genome of cabyv-chn shared 89.0% nucleotide sequence identity with the french cabyv isolate. in contrast, nucleotide sequence identities between mabyv and cabyv and other poleroviruses were in the range of 50.7-74.2%, with amino acid sequence identities ranging from 24.8 to 82.9% for in ...	2008	18414972
[quality of different aphids as hosts of the parasitoid lysiphlebus testaceipes (cresson) (hymenoptera: braconidae, aphidiinae)].	lysiphlebus testaceipes (cresson) has a broad aphid host range; however the quality of these preys may interfere in its biological feature. this study aimed to evaluate the quality of three macrosiphini, brevicoryne brassicae (l.), lipaphis erysimi (kaltenbach) and myzus persicae (sulzer), and three aphidini schizaphis graminum (rondani) rhopalosiphum maidis (fitch) and aphis gossypii glover as hosts to l. testaceipes and to determine the relation possible of host preference, of size and quality ...	2008	18506297
[development and parasitism of lysiphlebus testaceipes (cresson) and aphidius colemani viereck (hymenoptera: braconidae) on aphis gossypii glover (hemiptera: aphididae) on two chrysanthemum cultivars].	the parasitoids lysiphlebus testaceipes (cresson) and aphidius colemani viereck play an important role on the regulation of aphid populations on chrysanthemum grown in greenhouses. this study evaluated the interaction of biological control and plant resistance by the development and the parasitism of l. testaceipes and a. colemani on aphis gossypii glover. the aphid host was kept on commercial cultivars of chrysanthemum susceptible yellow snowdon (ys) and resistant white reagan (wr). the experim ...	2006	18575697
the toxicological effects of petroleum spray oils on insects - evidence for an alternative mode of action and possible new control options.	we tested the most widely held theory about the mode of action of petroleum spray oils (psos) on insects (i.e. anoxia). an nc24 petroleum oil was applied topically to cotton aphids (aphis gossypii) and cluster caterpillars (spodoptera litura), which then showed signs of mortality that are inconsistent with anoxia. the insects died soon after treatment, with most of the mortality occurring within the first 10min. toxicity symptoms included loss of locomotory ability, unusual abdominal contraction ...	2008	18602441
in silico analyses of peptide paracrines/hormones in aphidoidea.	the aphidoidea is an insect superfamily comprising most of the known aphid species. while small in size, these animals are of considerable economic importance as many members of this taxon are serious agricultural pests, inflicting physical damage upon crop plants and serving as vectors in the transmission of viral plant diseases. in terms of identifying the paracrines/hormones used to modulate behavior, particularly peptides, members of the aphidoidea have largely been ignored, as it is not tra ...	2008	18725225
reproductive biology of two nontarget insect species, aphis gossypii (homoptera: aphididae) and orius sauteri (hemiptera: anthocoridae), on bt and non-bt cotton cultivars.	transgenic bt cotton, engineered to continuously produce activated delta-endotoxins of the soil bacteria bacillus thuringiensis, holds great promise in controlling helicoverpa armigera and other lepidopteran pests. however, it also may impact the invertebrate community, which needs to be clarified. the effects of bt cotton on two nontarget insects, aphis gossypii and orius sauteri, were assessed under semifield and laboratory conditions. mean total duration of nymphal stages of a. gossypii was s ...	2008	18801270
variability and genetic basis for migratory behaviour in a spring population of the aphid, aphis gossypii glover in the yangtze river valley of china.	the population dynamics, development of gonads, takeoff and flight behaviour of aphis gossypii glover were investigated in order to test whether there was variation of migratory ability in the spring population. field surveys showed that not all the aphids overwintering on hibiscus migrated to the secondary host plants, and the host-alternating and host-specific life-cycle forms coexisted in nanjing, china. substantial variation in flight capacity of winged individuals, development of gonads and ...	2008	18826665
estimation of the effective number of founders that initiate an infection after aphid transmission of a multipartite plant virus.	the fecundity of rna viruses can be very high. thus, it is often assumed that viruses have large populations, and rna virus evolution has been mostly explained using purely deterministic models. however, population bottlenecks during the virus life cycle could result in effective population numbers being much smaller than reported censuses, and random genetic drift could be important in virus evolution. a step at which population bottlenecks may be severe is host-to-host transmission. we report ...	2008	18842732
transmission efficiency of papaya ringspot virus by three aphid species.	the transmission efficiency of papaya ringspot virus (prsv) by three aphid vectors (i.e., aphis gossypii, a. craccivora, and myzus persicae) was studied. efficiency was measured by single-aphid inoculation, group inoculation (using five aphids), duration of virus retention, and the number of plants following a single acquisition access period (aap) to which the aphids could successfully transmit the virus. single-aphid inoculation studies indicated that m. persicae (56%) and a. gossypii (53%) we ...	2008	18943221
transmission efficiency of cucumber mosaic virus by aphids associated with virus epidemics in snap bean.	cucumber mosaic virus (cmv) is a major component of the virus complex that has become more pronounced in snap bean in the midwestern and northeastern united states since 2001. multiple-vector-transfer tests were done to estimate the cmv transmission efficiencies (p) of the main aphid species identified in commercial snap bean fields in new york and pennsylvania. the four most efficient vectors (p > 0.05) were aphis gossypii, a. glycines, acyrthosiphon pisum, and therioaphis trifolii, which were ...	2008	18943413
transmissibility of cucumber mosaic virus by aphis gossypii correlates with viral accumulation and is affected by the presence of its satellite rna.	abstract satellite rnas (satrnas) are associated with cucumber mosaic virus (cmv) in tomato, most often causing severe epidemics of necrotic plants, and not associated with specific host symptoms. laboratory studies on virus transmission by the aphid vector aphis gossypii were performed to better understand the dynamics of field populations of cmv. the presence of satrnas correlated with lower concentrations of virus in infected plants and with a decrease in the efficiency of transmission from s ...	2000	18944468
aphid transmission alters the genomic and defective rna populations of citrus tristeza virus isolates.	abstract a total of 14 spanish isolates of citrus tristeza virus (ctv) and 1 isolate from japan were transmitted by aphis gossypii, and the subisolates obtained were compared with the source isolates for symptom expression and double-stranded rna (dsrna) pattern. of the 14 spanish isolates, 9 showed altered dsrna patterns after aphid transmission but only minor variations in the intensity of symptoms induced on mexican lime. northern blot hybridization with complementary dna (cdna) probes corres ...	2000	18944601
examination of the effect of aphid vector population composition on the spatial dynamics of citrus tristeza virus spread by stochastic modeling.	abstract aphid vector species population composition is known to affect the spatial patterns of citrus tristeza virus (ctv) and the changes in these patterns over time. however, the biological processes that are associated with virus spread have not been well defined. the spatiotemporal dynamics of ctv were examined using data collected from research plots in the dominican republic and costa rica, where the brown citrus aphid (bca), toxoptera citricida, was the predominant species, and in florid ...	1999	18944697
survey methods for assessment of citrus tristeza virus incidence when toxoptera citricida is the predominant vector.	abstract citrus tristeza virus (ctv) incidence may be assessed by sampling groups of citrus trees, recording the groups as ctv positive (one or more infected trees) or ctv negative (no infected trees), and then calculating disease incidence at the scale of the individual tree by means of a formula involving incidence at the group scale and the number of trees per group. this procedure works well when the ctv status of a tree can be regarded as independent of the ctv status of other trees in the ...	1999	18944721
the microbial flora of aphis gossypii: patterns across host plants and geographical space.	the cotton aphid, aphis gossypii, has a worldwide distribution and causes damage to numerous economically important crops. the bacterial symbionts associated with cotton aphids, sampled mainly from malvaceous and cucurbitaceous plants within japan and australia, were characterised using molecular profiling approaches. the goal was to document the aphid symbionts present and determine if patterns of microbial diversity are consistent with the existence of host plant related cryptic species in a. ...	2009	19026656
evaluation of larvicidal and nymphicidal potential of plant extracts against anopheles subpictus grassi, culex tritaeniorhynchus giles and aphis gossypii glover.	the acetone, chloroform, ethyl acetate, hexane and methanol extracts of peel and leaf extracts of citrus sinensis, ocimum canum, ocimum sanctum and rhinacanthus nasutus were tested against fourth instar larvae of malaria vector, anopheles subpictus grassi, japanese encephalitis vector, culex tritaeniorhynchus giles (diptera: culicidae) and feeding deterrence to nymphs of cotton pest, aphis gossypii glover (homoptera: aphididae). the larval and nymph mortality were observed after 24 h of exposure ...	2009	19050919
prey species preference of the predator serangium parcesetosum sicard (col., coccinellidae) and its interaction with another natural enemy.	this study aimed to determine serangium parcesetosum preference for different prey species and parasitized bemisia tabaci (genn.) (hom., aleyrodidae) by the parasitoid, eretmocerus mundus mercet (hym., aphelinidae). the results on s. parcesetosum preference by feeding on different prey species offered separately and together indicated that the predatory larvae and adults preferred significantly the cotton whitefly, b. tabaci and the castor bean whitefly, trialeurodes ricini (misra) (hom., aleyro ...	2007	19070175
recent advances in the biochemistry of spinosyns.	spinosyn and its analogs, produced by saccharopolyspora spinosa, are the active ingredients in a family of insect control agents. they are macrolides with a 21-carbon, 12-membered tetracyclic lactones that are attached to two deoxysugars, tri-o-methylrhamnose and forosamine. labeling studies, analysis of the biosynthetically blocked mutants, and the genetic identification of the spinosyn gene cluster have provided detailed information concerning the mechanism of spinosyn biosynthesis and have en ...	2009	19082588
carboxylesterase activity, cdna sequence, and gene expression in malathion susceptible and resistant strains of the cotton aphid, aphis gossypii.	levels of insecticide resistance, carboxylesterase activity, carboxylesterase expression, and the cdna sequence of carboxylesterase gene were investigated in malathion resistant and susceptible strains of cotton aphids, aphis gossypii (glover). the resistant strain (mrr) exhibited 80.6-fold resistance to malathion compared to the susceptible strain (mss) in cotton aphids. five substrates, alpha-naphthyl acetate (alpha-na), beta-naphthyl acetate (beta-na), alpha-naphthyl propionate (alpha-npr), a ...	2009	19110065
effects of rootstock and flushing on the incidence of three insects on 'clementine de nules' citrus trees.	we evaluated the influence of six different citrus rootstocks on the incidence of the citrus leafminer, phyllocnistis citrella stainton (lepidoptera: gracillariidae), and the aphid species, aphis gossypii glover and a. spiraecola patch (hemiptera: aphididae), on 'clementine de nules' trees (citrus clementina hort. ex tan.). sampling was conducted during 2005 and 2006 in a grove of 3-yr-old trees in southern spain with six rootstocks arranged in a completely randomized block design. incidence (i. ...	2008	19161697
indian bt cotton varieties do not affect the performance of cotton aphids.	cotton varieties expressing cry proteins derived from the soil bacterium bacillus thuringiensis (bt) are grown worldwide for the management of pest lepidoptera. to prevent non-target pest outbreaks and to retain the biological control function provided by predators and parasitoids, the potential risk that bt crops may pose to non-target arthropods is addressed prior to their commercialization. aphids play an important role in agricultural systems since they serve as prey or host to a number of p ...	2009	19279684
a comparison of alternative plant mixes for conservation bio-control by native beneficial arthropods in vegetable cropping systems in queensland australia.	cucurbit crops host a range of serious sap-sucking insect pests, including silverleaf whitefly (slw) and aphids, which potentially represent considerable risk to the australian horticulture industry. these pests are extremely polyphagous with a wide host range. chemical control is made difficult due to resistance and pollution, and other side-effects are associated with insecticide use. consequently, there is much interest in maximising the role of biological control in the management of these s ...	2010	19323854
hypersensitive response to aphis gossypii glover in melon genotypes carrying the vat gene.	aphis gossypii glover causes direct and indirect damage to cucumis melo l. crops. to decrease the harmful effects of this pest, one of the most economically and environmentally acceptable options is to use genetically resistant melon varieties. to date, several sources of resistance carrying the vat gene are used in melon breeding programmes that aim to prevent a. gossypii colonization and the subsequent aphid virus transmission. the results suggest that the resistance conferred by this gene is ...	2009	19474089
cross-species amplification and polymorphism of microsatellite loci in the soybean aphid, aphis glycines.	we tested the utility of 18 previously characterized aphis spp. microsatellite loci for polymorphism and differentiation among populations of the soybean aphid, aphis glycines. loci were chosen from a closely related species (aphis gossypii) and a more distantly related species (aphis fabae). we found nine loci to be polymorphic among korean and north american populations. overall expected heterozygosity was moderate (average: 0.47; range: 0-1), although populations substantially differed in dev ...	2009	19610462
ecological specialization of the aphid aphis gossypii glover on cultivated host plants.	many plant-feeding insect species considered to be polyphagous are in fact composed of genetically differentiated sympatric populations that use different hosts and between which gene flow still exists. we studied the population genetic structure of the cotton-melon aphid aphis gossypii that is considered as one of the most polyphagous aphid species. we used eight microsatellites to analyse the genetic diversity of numerous samples of a. gossypii collected over several years at a large geographi ...	2009	19635073
[toxicity of vitex negundo extract to aphids and its co-toxicity with imidacloprid].	in this paper, the toxicity of vitex negundo seed dichloromethane extract, imidacloprid, and omethoate to aphis citricola, aphis gossypii, and myzus persicae was determined by impregnation method, and the co-toxicity of the seed extract and imidacloprid to a. gossypii as well as the repellent effect of the extract and test insecticides to m. persicae were tested by topical application of capillary tube and by selection in culture dish, respectively. the results showed that the lc50 of v. negundo ...	2009	19637611
distribution and molecular diversity of three cucurbit-infecting poleroviruses in china.	cucurbit aphid-borne yellows virus (cabyv) and melon aphid-borne yellows virus (mabyv) have been found to be associated with cucurbit yellowing disease in china. our report identifies for the first time a third distinct polerovirus, tentatively named suakwa aphid-borne yellows virus (sabyv), infecting suakwa vegetable sponge. to better understand the distribution and molecular diversity of these three poleroviruses infecting cucurbits, a total of 214 cucurbitaceous crop samples were collected fr ...	2009	19664664
control of silverleaf whitefly, cotton aphid and kanzawa spider mite with oil and extracts from seeds of sugar apple.	development of alternative methods for pest management is needed with the increased concern for adverse effects of pesticides for human health and the environment. the main goal of our study was to test the oil from seeds of sugar apple (annona squamosa), an edible tropical fruit for pest control. the oil pressed out of seeds was as effective in controlling the silverleaf whitefly, bemisia argentifolii bellows & perring (homoptera: aleyrodidae), infesting leaves of tomato plants in greenhouse co ...	2009	19768275
modeling temporal trends in aphid vector dispersal and cucumber mosaic virus epidemics in snap bean.	cucumber mosaic virus (cmv) has become a major limiting factor in snap bean production in the great lakes region of north america, and epidemics have occurred more frequently since the soybean aphid, aphis glycines matsumura, was introduced. major aphid vectors of cmv epidemics were identified by statistically relating their temporal dispersal trends to the incidence of cmv. alates were monitored weekly using water pan traps in 74 snap bean fields in new york and pennsylvania from 2002 to 2006. ...	2009	19825288
insecticide resistance traits differ among and within host races in aphis gossypii.	the polyphagous cotton-melon aphid aphis gossypii glover is structured into geographically widespread host races comprising a few clones specialised on cucurbitaceae, cotton, eggplant or pepper. to assess insecticide resistance among and within host races, leaf disc bioassays were conducted on aphid clones collected from cucurbitaceae (genotypes c4 and c9), cotton (genotypes burk and ivo), eggplant (genotype auber) and pepper (genotype psp4). molecular diagnostic (pcr-rflp) and enzyme assays wer ...	2010	19908228
deceptive chemical signals induced by a plant virus attract insect vectors to inferior hosts.	previous studies have shown that vector-borne pathogens can alter the phenotypes of their hosts and vectors in ways that influence the frequency and nature of interactions between them, with significant implications for the transmission and spread of disease. for insect-borne pathogens, host odors are particularly likely targets for manipulation, because both plant- and animal-feeding insects use volatile compounds derived from their hosts as key foraging cues. here, we document the effects of a ...	2010	20133719
mapping and validation of qtls for resistance to aphids and whiteflies in melon.	aphis gossypii and bemisia tabaci are severe hemipteran pests of melon crops and breeding for resistance to both insects is required to reduce pesticide use. resistance was evaluated for its effect on behaviour and biotic potential of both hemipterans in a population of recombinant inbred lines (rils) derived from the cross védrantais x pi 161375. insect variability was considered using two a. gossypii clones and two b. tabaci populations. two additive qtls affected the whiteflies. four additive ...	2010	20180095
new insecticides to control boll weevil and cotton aphid.		1947	20264502
cloning and phylogenetic analysis of sid-1-like genes from aphids.	abstract the sid-1 (systemic interference defective) gene encodes a transmembrane protein that is an important participator in the systemic rnai pathway and has been reported in several organisms. in insects, sid-1-like genes were described from tribolium castaneum, apis mellifera, bombyx mori and schistocerca americana, but were not found in drosophila melanogaster and anopheles gambiae. to investigate whether this gene occurs in aphid species, rt-pcrs were performed using degenerate primers de ...	2008	20302524
effects of vegetated field borders on arthropods in cotton fields in eastern north carolina.	the influence, if any, of 5m wide, feral, herbaceous field borders on pest and beneficial arthropods in commercial cotton, gossypium hirsutum (l.) (malvales: malvaceae), fields was measured through a variety of sampling techniques over three years. in each year, 5 fields with managed, feral vegetation borders and five fields without such borders were examined. sampling was stratified from the field border or edge in each field in an attempt to elucidate any edge effects that might have occurred. ...	2008	20345293
relation of aphicidal activity with cuticular degradation by beauveria bassiana sfb-205 supernatant incorporated with polyoxyethylene-(3)-isotridecyl ether.	the application of beauveria bassiana sfb-205 supernatant incorporated with polyoxyethylene-(3)-isotridecyl ether (tde-3) significantly reduced the population of two species of aphids including cotton aphid, aphis gossypii, and green peach aphid, myzus persicae, much higher in cotton aphid, compared with supernatant incorporated with tween 80, which allows the relationship of aphicidal activity with the degradation of aphid cuticles to be determined. overall, the degradation of the cuticles indu ...	2010	20372019
a novel biopesticide production: attagel-mediated precipitation of chitinase from beauveria bassiana sfb-205 supernatant for thermotolerance.	insect killing fungi have high potential in controlling agriculturally harmful pest, but their slow progress and high variation in killing insect are major impediments to successful industrialization. the present work describes the use of supernatant from the liquid culture of beauveria bassiana sfb-205 to surmount this problem, particularly efficient production of thermotolerant chitinase, which is one of the major pathogenesis-related enzymes in the supernatant. the chitinase was precipitated ...	2010	20445976
comparative analysis of the acyrthosiphon pisum genome and expressed sequence tag-based gene sets from other aphid species.	to study gene repertoires and their evolution within aphids, we compared the complete genome sequence of acyrthosiphon pisum (reference gene set) and expressed sequence tag (est) data from three other species: myzus persicae, aphis gossypii and toxoptera citricida. we assembled ests, predicted coding sequences, and identified potential pairs of orthologues (reciprocical best hits) with a. pisum. pairwise comparisons show that a fraction of the genes evolve fast (high ratio of non-synonymous to s ...	2010	20482638
molecular cloning and characterization of a prenyltransferase from the cotton aphid, aphis gossypii.	prenyltransferases play a key role in isoprenoid biosynthesis. here, a cdna encoding a prenyltransferase was isolated from the cotton aphid, aphis gossypii, which consists of 1354 nucleotides and encodes a protein of 394 amino acids (agipps). subsequent sequencing of agipps genomic dna resulted in one 3138-bp sequence. southern blotting analysis indicated that only a single ipps gene exists in the cotton aphid. real-time quantitative pcr showed that agipps transcripts were mainly present at the ...	2010	20510361
role of leaf glandular trichomes of melon plants in deterrence of aphis gossypii glover.	external characteristics of the leaf epidermis and their effects on behaviour of aphis gossypii glover were evaluated in two cucumis melo l. genotypes, 'bola de oro' (aphid susceptible) and tgr-1551 (aphid resistant) in order to explore their role in the early rejection of tgr-1551 by this aphid. no differential effects of epicuticular waxes on aphid behaviour were observed. the type, distribution and number of trichomes on melon leaves were also studied. pubescence in melon, measured as the num ...	2010	20522187
[isolation, identification and insecticidal activity of endophyte from achnatherum inebrians].	to study endophyte species of achnatherum inebrians and to screen strains with insecticidal activity against cotton insect.	2010	20560358
presence of the aphid, chaetosiphon fragaefolii, on strawberry in argentina.	seasonal abundance of the strawberry aphid complex under different agronomic practices in the outskirts of la plata, argentina was studied on strawberry, fragaria x ananassa duchesne (rosales: rosaceae). aphid densities were low in strawberry fields in which insecticides and fungicides were used. in addition to aphis gossypii, aphis fabae, mysus persicae and macrosiphum euphorbiae, the aphid, chaetosiphon fragaefolii (cockerell) (homoptera: aphididae), was recorded for the first time in this hor ...	2010	20569141
ring structure amino acids affect the suppressor activity of melon aphid-borne yellows virus p0 protein.	melon aphid-borne yellows virus (mabyv) is a newly identified polerovirus occurring in china. here, we demonstrate that the mabyv encoded p0 (p0(ma)) protein is a strong suppressor of post-transcriptional gene silencing (ptgs) with activity comparable to tobacco etch virus (tev) hc-pro. in addition we have shown that the lp f-box motif present at the n-terminus of p0(ma) is required for suppressor activity. detailed mutational analyses on p0(ma) revealed that changing the conserved trp 212 with ...	2010	20667575
down-regulated transcriptional level of ace1 combined with mutations in ace1 and ace2 of aphis gossypii are related with omethoate resistance.	the degree of insecticide resistance, acetylcholinesterase (ache) activity kinetics, ache gene expression and the cdna sequence of ache gene were investigated in resistant and relatively susceptible strains of the cotton aphids, aphis gossypii (glover). the resistant strain (orr) exhibited 53.28-fold resistance to omethoate compared to the relatively susceptible strain (oss) in cotton aphids. ache activity, v(max) and k(m) were significantly lower in the orr strain than in the oss strain (0.13-, ...	2010	20692243
correlation of the aphicidal activity of beauveria bassiana sfb-205 supernatant with enzymes.	the supernatant of beauveria bassiana sfb-205 reduced the population of cotton aphid, aphis gossypii glover, with a dosage-dependent manner, which allowed a quality control (qc) factor to be determined for the evaluation of the supernatant as the first step of a development. enzymes were assumed as possible qc factors based on 1) the comparable aphicidal activity of the supernatant protein pellet to the raw supernatant, 2) the supernatant-induced degradation of the insect cuticles, observed by t ...	2010	20965068
biological characterization of sulfoxaflor, a novel insecticide.	the commercialization of new insecticides is important for ensuring that multiple effective product choices are available. in particular, new insecticides that exhibit high potency and lack insecticidal cross-resistance are particularly useful in insecticide resistance management (irm) programs. sulfoxaflor possesses these characteristics and is the first compound under development from the novel sulfoxamine class of insecticides.	2011	21308958
insecticide use and competition shape the genetic diversity of the aphid aphis gossypii in a cotton-growing landscape.	field populations of the cotton aphid, aphis gossypii glover, are structured into geographically widespread host races. in the cotton-producing regions of west and central africa (wca), two genotypes have been repeatedly detected within the cotton host race, one of which (burk1) is prevalent (>90%) and resistant to several insecticides, as opposed to the second one (ivo). here, we conducted whole plant and field cage experiments to test hypotheses for such low genetic diversity, including select ...	2011	21320362
the genome sequence of pepper vein yellows virus (family luteoviridae, genus polerovirus).	the complete genome of pepper vein yellows virus (pevyv) was sequenced using random amplification of rna samples isolated from vector insects (aphis gossypii) that had been given access to pevyv-infected plants. the pevyv genome consisted of 6244 nucleotides and had a genomic organization characteristic of members of the genus polerovirus. pevyv had highest amino acid sequence identities in orf0 to orf3 (75.9 - 91.9%) with tobacco vein distorting polerovirus, with which it was only 25.1% identic ...	2011	21400195
in vitro and in planta compatibility of insecticides and the endophytic entomopathogen, lecanicillium lecanii.	in an attempt to clarify the potential role of endophytic fungi in integrated pest management, the compatibility of an endophytic isolate of lecanicillium lecanii (zimmermann) gams & zare (hyphomycetes) with nine insecticides used against aphis gossypii glover (homoptera : aphididae) was examined both in vitro over 14 days and in planta. in the laboratory, most insecticides partially or completely inhibited the germination of conidia and growth of hyphae in nutrient-rich conditions. endosulfan c ...	2011	21424605
effect of methomyl and oxamyl soil applications on early control of nematodes and insects.	methomyl is a widely used carbamate insecticide that has traditionally been applied as a foliar spray. more recently, methomyl has been labeled as a soil application via drip chemigation. not much is known about the insecticidal and nematicidal potential of soil-applied methomyl. methomyl soil applications were evaluated for their potential to control soil nematodes and foliar insect pests in a series of lab and greenhouse tests.	2011	21438120
minimising losses caused by zucchini yellow mosaic virus in vegetable cucurbit crops in tropical, sub-tropical and mediterranean environments through cultural methods and host resistance.	between 2006 and 2009, 10 field experiments were done at kununurra, carnarvon or medina in western australia (wa) which have tropical, sub-tropical and mediterranean climates, respectively. these experiments investigated the effectiveness of cultural control measures in limiting zymv spread in pumpkin, and single-gene resistance in commercial cultivars of pumpkin, zucchini and cucumber. melon aphids (aphis gossypii) colonised field experiments at kununurra; migrant green peach aphids (myzus pers ...	2011	21549770
permanent genetic resources added to molecular ecology resources database 1 april 2010 - 31 may 2010.	this article documents the addition of 396 microsatellite marker loci to the molecular ecology resources database. loci were developed for the following species: anthocidaris crassispina, aphis glycines, argyrosomus regius, astrocaryum sciophilum, dasypus novemcinctus, delomys sublineatus, dermatemys mawii, fundulus heteroclitus, homalaspis plana, jumellea rossii, khaya senegalensis, mugil cephalus, neoceratitis cyanescens, phalacrocorax aristotelis, phytophthora infestans, piper cordulatum, pte ...	2010	21565124
sequential sampling of aphis gossypii glover (hemiptera: aphididae) and frankliniella schultzei trybom (thysanoptera: thripidae) on cotton crop.	the goal of this research was to use the sequential probability ratio test to establish a sequential sampling plan for aphis gossypii glover and frankliniella schultzei trybom infesting cotton. field work was conducted at the agricultural experimental station of the universidade federal da grande dourados during the 2003/2004 and 2004/2005 agricultural years. aphid colonies and individual thrips in the sampling area were counted and their numbers were recorded. the spatial distribution pattern o ...	2011	21584409
identification of semiochemicals released by cotton, gossypium hirsutum, upon infestation by the cotton aphid, aphis gossypii.	the cotton aphid, aphis gossypii (homoptera: aphididae), is increasing in importance as a pest worldwide since the introduction of bt-cotton, which controls lepidopteran but not homopteran pests. the chemical ecology of interactions between cotton, gossypium hirsutum (malvaceae), a. gossypii, and the predatory lacewing chrysoperla lucasina (neuroptera: chrysopidae), was investigated with a view to providing new pest management strategies. behavioral tests using a four-arm (pettersson) olfactomet ...	2011	21671083
toxicities and sublethal effects of seven neonicotinoid insecticides on survival, growth and reproduction of imidacloprid-resistant cotton aphid, aphis gossypii.	imidacloprid has been a major neonicotinoid insecticide for controlling aphis gossypii (glover) (homoptera: aphididae) and other piercing-sucking pests. however, the resistance to imidacloprid has been recorded in many target insects. at the same time, cross-resistance of imidacloprid and other insecticides, especially neonicotinoid insecticides, has been detected.	2011	21714058
mass production of aphicidal beauveria bassiana sfb-205 supernatant with the parameter of chitinase.	beauveria bassiana sfb-205 supernatant can effectively control cotton aphid populations, which is closely associated with its chitinase activity. the present work extends to optimizing a culture medium to produce more efficacious supernatant in flask conditions, followed by scale-up in 7 l, 300 l and 1.2 kl fermentors with the parameter of chitinase. in flask conditions, a combination of soluble starch and yeast extract produced the greatest amount of chitinase (5.1 units/ml) and its supernatant ...	2011	21715967
purification and characterization of a lectin with high hemagglutination property isolated from allium altaicum.	a lectin was purified from the leaves of allium altaicum and corresponding gene was cloned. the lectin namely allium altaicum agglutinin (aaa) was ~24-ákda homodimeric protein and similar to a typical garlic leaf lectin. it was synthesized as 177 amino acid residues pre-proprotein, which consisted of 28 and 43 amino acid long n and c-terminal signal peptides, respectively. the plant expressed this protein more in scapes and flowers in comparison to the bulbs and leaves. hemagglutination activity ...	2011	21732172
within-plant distribution of cotton aphids, aphis gossypii glover (hemiptera: aphididae), in bt and non-bt cotton fields.	knowledge of the vertical and horizontal distribution of aphis gossypii glover (hemiptera: aphididae) on genetically modified cotton plants over time could help optimize decision-making in integrated cotton aphid management programs. therefore, the aim of the present study was to determine the vertical and horizontal distribution of a. gossypii in non-transgenic bt cotton and transgenic bt-cotton over time during two cotton seasons by examining plants throughout the seasons. there was no signifi ...	2012	21791143
development of controlled release formulations of carbofuran and imidacloprid and their bioefficacy evaluation against aphid, aphis gossypii and leafhopper, amrasca biguttula biguttula ishida on potato crop.	controlled release (cr) formulations of carbofuran and imidacloprid were prepared employing polyvinyl chloride and carboxymethyl cellulose (cmc) and their bioefficacy was evaluated against the aphid, aphis gossypii and leafhopper, amrasca biguttula biguttula ishida on potato crop. the cr formulations of carbofuran and imidacloprid provided better or equal control of the pests than commercial formulations. cmc-based formulation provided a superior control of both the pests. the imida-cmc, which s ...	2011	21806462
Compatibility of garlic (Allium sativum L.) leaf agglutinin and Cry1Ac d-endotoxin for gene pyramiding.	d-Endotoxins produced by Bacillus thuringiensis (Bt) have been used as bio-pesticides for the control of lepidopteran insect pests. Garlic (Allium sativum L.) leaf agglutinin (ASAL), being toxic to several sap-sucking pests and some lepidopteran pests, may be a good candidate for pyramiding with d-endotoxins in transgenic plants for enhancing the range of resistance to insect pests. Since ASAL shares the midgut receptors with Cry1Ac in Helicoverpa armigera, there is possibility of antagonism in ...	2011	21870043
effect of vermicompost and cucumber cultivar on population growth attributes of the melon aphid (hemiptera: aphididae).	worldwide, the developing industry of cucumbers (cucumis sativus l.) grown in greenhouses is threatened by damage from sucking pests, especially aphids. among these, the melon aphid, aphis gossypii glover (hemiptera: aphididae), is the most serious. we tested the effect of two cucumber cultivars ('royal' and'storm') and three vermicompost concentrations (0 [control], 20, and 30%) in field soil on the development and fecundity rates of a. gossypii, by using a randomized complete block design with ...	2011	21882707
Molecular characterization of a novel vegetative insecticidal protein from Bacillus thuringiensis effective against sap-sucking insect pest.	Several isolates of Bacillus thuringiensis (Bt) were screened for the vegetative insecticidal protein (Vip) effective against sap-sucking insect pests. Screening results were based on LC(50) values against cotton aphid (Aphis gossypii), one of the dangerous pests of various crop plants including cotton. Among the isolates, the Bt#BREF24 showed promising results, and upon purification the aphidicidal protein was recognized as a binary toxin. One of the components of this binary toxin was identifi ...	2011	21952370
bacterial communities of two parthenogenetic aphid species cocolonizing two host plants across the hawaiian islands.	aphids (hemiptera: aphididae) have been the focus of several studies with respect to their interactions with inherited symbionts, but bacterial communities of most aphid species are still poorly characterized. in this research, we used bar-coded pyrosequencing to characterize bacterial communities in aphids. specifically, we examined the diversity of bacteria in two obligately parthenogenetic aphid species (the melon aphid, aphis gossypii, and the cardamom aphid, pentalonia caladii) cocolonizing ...	2011	21965398
susceptibility of standard clones and european field populations of the green peach aphid, myzus persicae, and the cotton aphid, aphis gossypii (hemiptera: aphididae), to the novel anthranilic diamide insecticide cyantraniliprole.	parthenogenetic clones of the green peach aphid, myzus persicae (sulzer), and the cotton aphid, aphis gossypii glover, were tested with the anthranilic diamide insecticide cyantraniliprole (i.e. dupont(™) cyazypyr(™) ) in systemic-uptake bioassays to investigate potential for cross-resistance conferred by mechanisms of insecticide resistance to organophosphates, carbamates and pyrethroids and, in the case of m. persicae, reduced sensitivity to neonicotinoids. these data were compared with the re ...	2012	22045565
Rapid detection of vip1-type genes from Bacillus cereus and characterization of a novel vip binary toxin gene.	A PCR-restriction fragment length polymorphism (PCR-RFLP) method for identifying vegetative insecticidal protein (vip) 1-type genes from Bacillus cereus was developed by designing specific primers based on the conserved regions of the genes to amplify vip1-type gene fragments. PCR products were digested with endonuclease AciI, and four known vip1-type genes were identified. Vip1Ac and vip1Aa-type genes appeared in 17 of 26 B. cereus strains. A novel vip1-type gene, vip1Ac1, was identified from B ...	2011	22092859
remotely sensing arthropod and nutrient stressed plants: a case study with nitrogen and cotton aphid (hemiptera: aphididae).	remote sensing can be used in combination with ground sampling to detect aphid- (aphis gossypii glover) infested cotton (gossypium hirsutum l.). changes in wavelengths in the near-infrared (nir) have proven useful for such detection, but these changes can be confused with other factors stressing plants, such as water deficiency and nutrient status. this study was designed to test the utility of this technology to distinguish between two factors stressing plants: nitrogen deficiency and aphids. f ...	2010	22127176
effect of reproductive mode on host plant utilization of melon aphid (hemiptera: aphididae).	variation in the reproductive mode of melon aphid aphis gossypii glover occurred on the large geographic scale, but the performance of different reproductive modes to use host plant is poorly understood. life tables of melon aphid population that undergo the anholocyclic, androcyclic, and intermediate reproductive mode were conducted on different host plants. the results showed that the anholocyclic and androcyclic strains could become adults and produce offspring on cotton gossypium hirsutum l. ...	2010	22182553
foraging behavior of the coccinellid nephus includens (coleoptera: coccinellidae) in response to aphis gossypii (hemiptera: aphididae) with particular emphasis on larval parasitism.	this study assessed the effect of parasitism of nephus includens (col.: coccinellidae) larvae by homalotylus flaminius (hym.: encyrtidae) on the predation rates of the predator on the cotton aphid, aphis gossypii glover (hem.: aphididae) by deriving functional responses for second- and fourth-instar predators at prey densities ranging from 10 to 80 aphids per arena. the relationship between the functional and numerical responses of adult females of n. includens also was determined for prey densi ...	2011	22251684
characterization of three novel sine families with unusual features in helicoverpa armigera.	although more than 120 families of short interspersed nuclear elements (sines) have been isolated from the eukaryotic genomes, little is known about sines in insects. here, we characterize three novel sines from the cotton bollworm, helicoverpa armigera. two of them, hase1 and hase2, share similar 5' -structure including a trna-related region immediately followed by conserved central domain. the 3' -tail of hase1 is significantly similar to that of one line retrotransposon element, harte1.1, in ...	2012	22319625
cucumis melo microrna expression profile during aphid herbivory in a resistant and susceptible interaction.	aphis gossypii resistance in melon (cucumis melo) is due to the presence of a single dominant virus aphid transmission (vat) gene belonging to the nucleotide-binding site leucine-rich repeat family of resistance genes. significant transcriptional reprogramming occurs in vat(+) plants during aphid infestation as metabolism shifts to respond to this biotic stress. micrornas (mirnas) are involved in the regulation of many biotic stress responses. the role of mirnas was investigated in response to a ...	2012	22375710
what do spring migrants reveal about sex and host selection in the melon aphid?	host plants exert considerable selective pressure on aphids because the plants constitute their feeding, mating and oviposition sites. therefore, host specialisation in aphids evolves through selection of the behavioural and chemical mechanisms of host-plant location and recognition, and through metabolic adaptation to the phloem content of the host plant. how these adaptive traits evolve in an aphid species depends on the complexity of the annual life cycle of that species. the purpose of this ...	2012	22471629
extensive ace2 duplication and multiple mutations on ace1 and ace2 are related with high level of organophosphates resistance in aphis gossypii.	aphis gossypii (glover) has been found to possess multiple mutations in the acetylcholinesterase (ache) gene (ace) that might involve target site insensitivity. in vitro functional expression of aches reveals that the resistant ace1 (ace1r) and ace2 (ace2r) were significantly less inhibited by eserine, omethoate, and malaoxon than the susceptible ace1 (ace1s) and ace2 (ace2s). furthermore, in both the mutant and susceptible aches, ace2 was significantly less sensitive to eserine, omethoate, and ...	2014	22489048
the tri-trophic interactions hypothesis: interactive effects of host plant quality, diet breadth and natural enemies on herbivores.	several influential hypotheses in plant-herbivore and herbivore-predator interactions consider the interactive effects of plant quality, herbivore diet breadth, and predation on herbivore performance. yet individually and collectively, these hypotheses fail to address the simultaneous influence of all three factors. here we review existing hypotheses, and propose the tri-trophic interactions (tti) hypothesis to consolidate and integrate their predictions. the tti hypothesis predicts that dietary ...	2012	22509298
aphid antixenosis in cotton is activated by the natural plant defence elicitor cis-jasmone.	upon insect herbivory, plants can release blends of volatile organic compounds (vocs) that modify herbivore and natural enemy behaviour. we have shown recently that cotton, gossypium hirsutum, emits a blend of defence vocs that repels the cotton aphid, aphis gossypii, upon herbivory by this notorious crop pest, including (z)-3-hexenyl acetate, (e)-4,8-dimethyl-1,3,7-nonatriene (dmnt), methyl salicylate and (e,e)-4,8,12-trimethyl-1,3,7,11-tridecatetraene (tmtt). in this study, we investigated cha ...	2012	22516741
population growth of aphis gossypii and myzus persicae (hemiptera: aphididae) in the presence of linepithema humile and tapinoma sessile (hymenoptera: formicidae).	invasive ant species can have dramatic impacts on native ants, through direct predation and by usurping common resources. most invasive ants and many native ants use honeydew, produced by phloem-sucking hemipterans. because colonies of invasive ants can become very large after establishment, these ants may facilitate greater hemipteran trophobiont population growth compared with their sympatric native ant counterparts. we examined the population growth of an aphid mutualist, aphis gossypii, and ...	2010	22546444
[effects of high temperature on the mortality and fecundity of two co-existing cotton aphid species aphis gossypii glover and acyrthosiphon gossypii mordvilko].	aphis gossypii and acyrthosiphon gossypii are the coexisting species on cotton plant, with their abundance differed within and among years. to explore whether the abundance difference was related to the different responses of the two aphid species to high temperature, a laboratory experiment was conducted to assess the mortality and reproduction of the two aphid species at high temperatures 32, 34, 36 and 38 degrees c. with the increasing temperature and prolonged exposure period, the cumulative ...	2012	22586979
predominant effects of host plant species on aphis gossypii aphid and e. pisyrphus balteatus hoverfly in a tritrophic approach.	the aphid aphis gossypii glover (homoptera: aphididae) is known as worldwide important pest. it causes serious injuries to crops, but is also able to feed on various cultivated and wild plants. some programs are developped to control this aphid. in many studies, hoverfy episyrphus balteatus de geer (diptera: syrphidae) is used as an efficient and aphid specific predator in biological control systems. in this work, we study cotton aphid choice plant discrimination, the effect of host plants on it ...	2011	22696952
the joint action of destruxins and botanical insecticides (rotenone, azadirachtin and paeonolum) against the cotton aphid, aphis gossypii glover.	the joint action of destruxins and three botanical insecticides, rotenone (rot), azadirachtin (aza) and paeonolum (pae) against the cotton aphid, aphis gossypii, was bioassayed. in laboratory experiment, several synergistic groups of destruxins with botanical insecticides were found by means of sun's co-toxicity coefficients (ctc) and finney's synergistic coefficient (sc). the best synergistic effect was discovered in the ratio group des/rot 1/9 with the ctc or sc and lc₅₀ values of 479.93 or 4. ...	2012	22710827
within-plant distribution of cotton aphid (hemiptera: aphididae) in cotton cultivars with colored fibers.	we describe the vertical and horizontal distribution of the cotton aphid aphis gossypii glover within a cotton plant in two cotton (gossypium hirsutum linnaeus) cultivars (brs safira and brs rubí) with colored fiber over the time. measurements of aphid population dynamics and distribution in the cotton plants were recorded in intervals of seven days. the number of apterous or alate aphids and their specific locations were recorded, using as a reference point the location of nodes on the mainstem ...	2012	22782536
acquired immunity of transgenic torenia plants overexpressing agmatine coumaroyltransferase to pathogens and herbivore pests.	we investigated the ability of transgenic torenia (scrophulariaceae) plants to resist fungi and arthropod herbivores. torenia hybrida cv. summerwave blue was manipulated to produce arabidopsis agmatine coumaroyltransferase (atact). this catalyses the last step in the biosynthesis of hydroxycinnamic acid amides (hcaas) which function in defence. transgenic plants accumulated substantial hcaas, predominantly p-coumaroylagmatine, and the hcaas were isomerized from the trans-form to the cis-form in ...	2012	23008754