| qtl analysis for resistance to foliar damage caused by thrips tabaci and frankliniella schultzei (thysanoptera: thripidae) feeding in cowpea [vigna unguiculata (l.) walp.]. | three quantitative trait loci (qtl) for resistance to thrips tabaci and frankliniella schultzei were identified using a cowpea recombinant inbred population of 127 f(2:8) lines. an amplified fragment length polymorphism (aflp) genetic linkage map and foliar feeding damage ratings were used to identify genomic regions contributing toward resistance to thrips damage. based on pearson correlation analysis, damage ratings were highly correlated (r >/= 0.7463) across seven field experiments conducted ... | 2010 | 20234834 |
| emergence of groundnut ringspot virus and tomato chlorotic spot virus in vegetables in florida and the southeastern united states. | groundnut ringspot virus (grsv) and tomato chlorotic spot virus (tcsv) are two emerging tospoviruses in florida. in a survey of the southeastern united states, grsv and tcsv were frequently detected in solanaceous crops and weeds with tospovirus-like symptoms in south florida, and occurred sympatrically with tomato spotted wilt virus (tswv) in tomato and pepper in south florida. tswv was the only tospovirus detected in other survey locations, with the exceptions of grsv from tomato (solanum lyco ... | 2015 | 25317844 |
| 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 |
| effects of single and dual species herbivory on the behavioural responses of three thrips species to cotton seedlings. | this study investigated the olfactory responses of three thrips species [frankliniella schultzei trybom, f. occidentalis pergrande and thrips tabaci lindeman (thysanoptera: thripidae)] to cotton seedlings [gossypium hirsutum l. (malvales: malvaceae)] simultaneously damaged by different combinations of herbivores. cotton seedlings were damaged by foliar feeding tetranychus urticae koch (trombidiforms: tetranychidae), helicoverpa armigera hübner (lepidoptera: noctuidae), aphis gossypii glover (hem ... | 2016 | 27029603 |
| 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 |
| 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 |
| standardized sampling plan for the thrips frankliniella schultzei (thysanoptera: thripidae) on watermelon crops. | sampling plans are essential components of integrated pest management programs. the thrips frankliniella schultzei (trybom) (thysanoptera: thripidae) is an important pest of watermelon crops. despite the importance of sampling plans and of f. schultzei as a pest of watermelon crops, no research has been previously conducted on this subject for this crop. the objective of this work was to create a standardized sampling plan for f. schultzei in watermelon crops. over two consecutive years, weekly ... | 2017 | 28334069 |
| economic injury levels and sequential sampling plans for frankliniella schultzei in watermelon crops. | the thrips frankliniella schultzei is an important watermelon pest. nevertheless, economic injury levels and sampling plans for this pest have not yet been determined for this crop. thus, the objective of the present study was to determine the economic injury levels and develop sequential sampling plans for f. schultzei in conditions of low, medium and high fruit prices. | 2016 | 27860205 |
| assessing abundance and distribution of an invasive thrips frankliniella schultzei (thysanoptera: thripidae) in south florida. | within-plant and within-field distribution of larvae and adults of an invasive thrips species, frankliniella schultzei (trybom) on cucumber, cucumis sativus l. was studied in 2008 and 2009 in homestead, florida. the majority of thrips were found inhabiting flowers of cucumber plants and little or none was found on the other parts of the plant. thrips were aggregated in the field, as indicated by the two regression models, taylor's power and iwao's patchiness regression. iwao's patchiness regress ... | 2012 | 22030382 |
| effect of the postfeeding interval on olfactory responses of thrips to herbivore-induced cotton plants. | we investigated the responses of 3 thrips species, frankliniella schultzei trybom, f. occidentalis pergrande, and thrips tabaci lindeman (thysanoptera: thripidae) to herbivore-damaged and undamaged cotton seedlings (gossypium hirsutum l. [malvales: malvaceae]) at a range of time intervals following damage by adult tetranychus urticae (koch), adult t. ludeni (zacher) (acari: tetranychidae) or helicoverpa armigera (hübner) (lepidoptera: noctuidae) larvae in olfactometer assays. the intensity/frequ ... | 2016 | 26172119 |
| how predictable are the behavioral responses of insects to herbivore induced changes in plants? responses of two congeneric thrips to induced cotton plants. | changes in plants following insect attack are referred to as induced responses. these responses are widely viewed as a form of defence against further insect attack. in the current study we explore whether it is possible to make generalizations about induced plant responses given the unpredictability and variability observed in insect-plant interactions. experiments were conducted to test for consistency in the responses of two congeneric thrips, frankliniella schultzei trybom and frankliniella ... | 2013 | 23691075 |
| sampling plans for the thrips frankliniella schultzei (thysanoptera: thripidae) in three lettuce varieties. | the common blossom thrips, frankliniella schultzei trybom (thysanoptera: thripidae), is an important lettuce pest worldwide. conventional sampling plans are the first step in implementing decision-making systems into integrated pest management programs. however, this tool is not available for f. schultzei infesting lettuce crops. thus, the objective of this work was to develop a conventional sampling plan for f. schultzei in lettuce crops. two sampling techniques (direct counting and leaf beatin ... | 2017 | 29126240 |
| dna barcoding studies on thrips in india: cryptic species and species complexes. | thrips are one of the major sucking pest and vector of plant viruses causing huge economic loss in agriculture. the accurate identification of thrips is crucial for effective pest management strategies. however, morphology based identification has limitations and warrants integration of molecular data. we attempted the largest dna barcoding initiative on 370 sequences of 89 thrips morphospecies including 104 novel sequences from 39 morphospecies, including the type specimens of four species. the ... | 2017 | 28687754 |
| tiny insects against the weather-flight and foraging patterns of frankliniella schultzei (thripidae) not altered by onset of rainfall. | to survive in nature, organisms may need to take direct action to mitigate specific dangers from their environmental surroundings. tiny flying insects are thought to be at particular risk from rainfall that would be of negligible concern to larger animals. the study species frankliniella schultzei is a thrips that inhabits flowers and feeds mostly on petal tissue and pollen. while found to respond in the laboratory to decreases in atmospheric pressure associated with cyclonic conditions (rather ... | 2017 | 28605128 |
| sampling plan for thrips (thysanoptera: thripidae) on cucumber. | this work determines the best technique, sampling unit and the number of samples to compose a sampling plan for frankliniella schultzei (trybom) and thrips palmi (karny) (thysanoptera: thripidae) on cucumber. the efficacy of three sampling techniques: leaf beating on a plastic tray, direct counting of insects on the lower leaf surface, and whole leaf collection in bags were compared in nine commercial cucumber crops using three sampling units (a leaf from a branch located in the apical, median o ... | 2017 | 19061046 |