| transmission of bamboo mosaic virus in bamboos mediated by insects in the order diptera. | bamboo mosaic virus (bamv), a member of the genus potexvirus, is the major threat to bamboo cultivation. similar to most potexviruses, the transmission of bamv by insect vectors has not been documented previously. however, field observations of bamv disease incidences suggested that insect vectors might be involved. in this study, we aimed to investigate the possibility of insect-mediated transmission of bamv among bamboo clumps, in order to provide further insights into the infection cycles of ... | 2017 | 28559888 |
| estimating bacterial diversity in scirtothrips dorsalis (thysanoptera: thripidae) via next generation sequencing. | the last 2 decades have produced a better understanding of insect-microbial associations and yielded some important opportunities for insect control. however, most of our knowledge comes from model systems. thrips (thysanoptera: thripidae) have been understudied despite their global importance as invasive species, plant pests and disease vectors. using a culture and primer independent next-generation sequencing and metagenomics pipeline, we surveyed the bacteria of the globally important pest, s ... | 2014 | 25382863 |
| biological and molecular characterization of tospoviruses in thailand. | twenty-eight isolates of tospoviruses associated with tomato, pepper, cucurbits, peanut, and physalis plants collected from fields in different regions of thailand were characterized. on the basis of n gene and protein sequence relationships, three tospoviruses were identified, namely watermelon silver mottle virus (wsmov), capsicum chlorosis virus (cacv), and melon yellow spot virus (mysv). clustal analysis of selected n protein sequences showed different isolates of cacv in three distinct clad ... | 2008 | 18188501 |
| epizootics of an entomopathogenic fungus entomophthora aphidis hoggman on the pomegranate aphid aphispunicae passerini (homoptera: aphididae). | thrips of late are becoming more resurgent in agro-ecosystems especially in india and south asian countries. one of the reasons attributed is the development of resistance in them to groups of insecticides of organo phosphates, carbamates, synthetic pyrethroids, etc., which form the core of recommendation for thrips management. the chilli thrips, scirtothrips dorsalis hood, is no exception and is tending to be an unmanageable pest. in s. dorsalis, besides evidence of resistance, elimination of n ... | 2006 | 17612351 |
| pathogenicity of fusarium semitectum against crop pests and its biosafety to non-target organisms. | microbial control is receiving more attention, since these alternative tactics, compared to chemical control methods, are energy saving, non polluting, ecologically sound and sustainable. a mycopathogen, fusarium semitectum berk. and rav. (arsef 7233) was isolated from diseased cadavers of aphid (aphis gossypii) and cultured in saboraud maltose agar supplemented with yeast extract medium (smay). being isolated first time from the chilli ecosystem its potential was evaluated. experiments were con ... | 2006 | 17385514 |
| fusarium semitectum, a potential mycopathogen against thrips and mites in chilli, capsicum annuum. | in india, chilli (capsicum annuum l.) suffers with a characteristic leaf curl symptoms due to the attack of mite, polyphagotarsonemus latus (banks) (acari: tarsonemidae) and thrips, scirtothrips dorsalis hood (thysanoptera: thripidae) or both. experiments were conducted in the fields of college of agriculture, shimoga, india during kharif (september 2003 to january 2004) and summer (march-june) 2004. after proving its pathogenicity, the potential of the mycopathogen, fusarium semitectum was eval ... | 2006 | 17385513 |
| development of a protocol for the identification of tospoviruses and thrips species in individual thrips. | a protocol for identifying tospovirus and thrips species in an individual thrips sample was successfully developed. first, an individual thrips was soaked in an rna stabilization solution to preserve protein and nucleic acids and ground in a carbonate buffer containing 0.2% sodium diethyldithiocarbamate. initially, the thrips extracts were screened for tospovirus infection by dot blot analysis using antibodies to nucleocapsid (n) proteins of tospoviruses. thrips extracts with positive results by ... | 2015 | 26141731 |
| the species composition of thrips (insecta: thysanoptera) inhabiting mango orchards in pulau pinang, malaysia. | a field study was conducted at two localities on pulau pinang, malaysia, during two consecutive mango flowering seasons in 2009 to identify variations in the species composition of thrips infesting treated and untreated mango (mangifera indica l.) orchards. the co2 immobilisation technique and the cutting method were used to recover different thrips species from mango panicles and weed host plants, respectively. the mango panicles and various weed species within the treated orchard were found to ... | 2012 | 24575225 |
| species composition and population dynamics of thrips (thysanoptera) in mango orchards of northern peninsular malaysia. | thrips are key pests of mango, mangifera indica (l.), in malaysia, including the northern peninsular. as penang has year-round equatorial climate and high of rainfall, the populations of thrips may be subject to variations in composition and size. with a goal of developing an appropriate control strategy, a survey was conducted in penang to determine species composition and abundance in relation to some environmental factors. sprayed and unsprayed orchards were sampled on weekly basis through tw ... | 2010 | 22546435 |
| evaluation of entomopathogenic fungi against chilli thrips, scirtothrips dorsalis. | commercial strains of entomopathogenic fungi were evaluated for control of chilli thrips, scirtothrips dorsalis hood (thysanoptera: thripidae), an invasive pest of ornamental and vegetable plants in the caribbean and southeastern united states. in laboratory assays, lc50 values against adult s. dorsalis were 5.1 × 10(4) cfu/ml for beauveria bassiana gha, with higher values 3.1 × 10(5) for metarhizium brunneum f52 and 3.8 × 10(5) for isaria fumosorosea apopka 97. second instars were comparatively ... | 2013 | 23895429 |
| diversity of thrips species and vectors of tomato spotted wilt virus in tomato production systems in kenya. | thrips have been recognized as primary vectors of tomato spotted wilt virus (tswv) with frankliniella occidentalis (pergande) reported as the most important and efficient vector, while other species such as thrips tabaci lindeman also include populations that can vector the virus. a study was undertaken to establish the diversity of thrips and presence of vectors for tswv in four major tomato production areas in kenya. the cytochrome oxidase 1 (co1) gene was used to generate sequences from thrip ... | 2015 | 26470099 |
| development of a ribosomal dna its2 marker for the identification of the thrips, scirtothrips dorsalis. | the thrips scirtothrips dorsalis hood (thysanoptera: thripidae) is an invasive pest that poses a significant economical threat to u.s. agriculture and trade. in this study, dna sequence data and polymerase chain reaction (pcr) were utilized to develop a molecular diagnostic marker for s. dorsalis. the dna sequence variation from the internal transcribed spacer 2 (its2) region of nuclear ribosomal dna (rdna) was analyzed from various thrips species, including s. dorsalis. a primer set and polymer ... | 2010 | 20578948 |
| population dynamics of scirtothrips dorsalis (thysanoptera: thripidae) and other thrips species on two ornamental host plant species in southern florida. | since its 2005 introduction into the united states, chilli thrips, scirtothrips dorsalis hood (thysanoptera: thripidae), has become a problematic pest of agronomic, vegetable, fruit, and ornamental plants. knowledge of its population dynamics may help managers better monitor and control s. dorsalis. population estimates were recorded for s. dorsalis and other thrips species on knock-out rose (rosa 'radrazz') and green buttonwood (conocarpus erectus l.) from july 2007 to september 2008 in two fie ... | 2014 | 25182610 |
| temperature-dependent fecundity of overwintered scirtothrips dorsalis (thysanoptera: thripidae) and its oviposition model with field validation. | a population model can be a useful tool to understand population dynamics under various environmental factors, and can be useful for evaluating the efficacy of new management practices. this study was conducted to construct an oviposition model of overwintered scirtothrips dorsalis as a part of its whole population model. | 2015 | 25469904 |
| the scirtothrips dorsalis species complex: endemism and invasion in a global pest. | invasive arthropods pose unique management challenges in various environments, the first of which is correct identification. this apparently mundane task is particularly difficult if multiple species are morphologically indistinguishable but accurate identification can be determined with dna barcoding provided an adequate reference set is available. scirtothrips dorsalis is a highly polyphagous plant pest with a rapidly expanding global distribution and this species, as currently recognized, may ... | 2015 | 25893251 |
| a novel mitochondrial genome architecture in thrips (insecta: thysanoptera): extreme size asymmetry among chromosomes and possible recent control region duplication. | multipartite mitochondrial genomes are very rare in animals but have been found previously in two insect orders with highly rearranged genomes, the phthiraptera (parasitic lice), and the psocoptera (booklice/barklice). | 2015 | 26055161 |
| a rapid sampling plan for scirtothrips dorsalis (thysanoptera: thripidae) on container shrub rose (rosa 'radrazz'). | the development of simple and reliable pest sampling programs is needed for growers to adopt economic or aesthetic injury levels. we developed a sampling plan for monitoring chilli thrips scirtothrips dorsalis hood populations on knockout shrub roses under simulated nursery conditions. the distribution of s. dorsalis among different plant structures revealed that most adults and larvae are found on foliar terminals, when compared with buds and flowers. based on thrips distribution, the third lea ... | 2016 | 27744286 |
| ultrastructure and distribution of antennal sensilla of the chilli thrips scirtothrips dorsalis hood (thysanoptera: thripidae). | the chilli thrips, scirtothrips dorsalis hood, is a serious pest of numerous important vegetable and ornamental crops. various signals, especially phytochemical cues, determine the behavior of the phytophagous thrips at host selection. the sensory abilities of s. dorsalis are poorly understood although the antennae of adult are known to possess important sensory structures in orther insects. in this study, the morphology, distribution, and ultrastructure of the antennal sensilla of the s. dorsal ... | 2017 | 28833941 |
| effect of trap color, height, and orientation on the capture of yellow and stick tea thrips (thysanoptera: thripidae) and nontarget insects in tea gardens. | two thrips species-the yellow tea thrips (scirtothrips dorsalis hood) and the stick tea thrips (dendrothrips minowai priesner)-are serious pests affecting tea plants in southern china. although the stick tea thrips is primarily restricted to southern china, the yellow tea thrips is gradually proliferating worldwide. colored sticky card traps may be useful for monitoring and capturing these species, but a systematic analysis has not been conducted to identify the most effective trap color, height ... | 2016 | 26842809 |
| application of cytochrome oxidase i sequences for phylogenetic analysis and identification of thrips species occurring on vegetable crops. | thrips are direct pests as well as vectors of important viruses infecting crop plants. one of the major constraints in studying the relationship between thrips vectors and tospoviruses is the difficulty of identifying the vector species because of high intraspecific variation among thrips populations. molecular approaches have been used to identify species differences. in this study, partial cytochrome oxidase i (coi) sequences were used to understand the phylogenetic relationship among thrips p ... | 2013 | 23448058 |
| biological parameters of scirtothrips dorsalis (thysanoptera: thripidae) on selected hosts. | since its establishment in florida in 2005, scirtothrips dorsalis hood, a highly polyphagous species, has become an economically important pest of ornamental plants and a potentially significant pest of vegetable and fruit crops. fruit and vegetable production in florida is trending toward significant adoption of organic methods and use of widely dispersed small fields in rapidly urbanizing landscapes. landscape plants may serve as refugia from which s. dorsalis recruits can disperse to nearby f ... | 2010 | 22546433 |