Consulta: subjectFacets:"Whitefly"
Registros recuperados: 33
Data/hora: 09/06/2024 18:04:26

Aptitud biológica de poblaciones de Bemisis tabaci (Gennadius) biotipo B (Hemiptera: Aleyrodidae) con diferente susceptibilidad al insecticida Thiamethoxam
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Campuzano Martínez, Xochitl Aidee.
En dos poblaciones de campo de Bemisia tabaci (Gennadius) biotipo B cuyas generaciones anteriores habían sido seleccionadas con el insecticida neonicotinoide thiamethoxam (NEO-R y NEO-N) y una susceptible a insecticidas (SUSC) se determinó el nivel de respuesta al insecticida thiamethoxam, así como las tablas de vida y fertilidad. A nivel de CL95, la población NEO-R tuvo una proporción de resistencia (PR95) a thiamethoxam de 8.8× y una tasa intrínseca de incremento (rm) de 0.072. La aptitud biológica de las poblaciones NEO-R, NEO-N en relación a la SUSC fue de 1.75 y 2.0, respectivamente. La población NEO-N tuvo una PR95 de 1.9× y una rm de 0.082, mientras que en SUSC, este valor fue de 0.041. El huevo y el adulto tardaron más tiempo en desarrollarse en la...
Tipo: Tesis
Palavras-chave: Neonicotinoides; Tablas de vida; Tablas de fertilidad; Mosca blanca; Maestría; Entomología y Acarología; Life tables; Fertility tables; Whitefly.
Ano: 2008
URL: http://hdl.handle.net/10521/1547

Genetic diversity analysis of Bemisia tabaci populations in Pakistan using RAPD markers
Provedor de dados: Electronic Journal of Biotechnology
Autores: Hameed,Saima; Hameed,Shahid; Sadia,Munazza; Malik,Salman A.
Background: The Bemisia tabaci is one of the most devastating pests of agricultural crops and ornamental plants worldwide. The genetic diversity and biotype status of the Bemisia tabaci in Pakistan was assessed by using random amplified polymorphic DNA-polymerase chain reaction (RAPD-PCR). A total 80 samples of B. tabaci collected from 14 districts of the Punjab province and 7 districts of the Sindh province were included. Results: All 10 primers screened in this study generated 151 scorable amplification products, of which 117 or 77% were polymorphic. Pairwise Nei and Li’s similarity had ranged from 0.25 to 0.88 among all individuals analyzed. Based on Nei and Li’s similarity coefficients Bemisia populations were grouped into 3 main clusters and clearly...
Tipo: Journal article
Palavras-chave: Asia II 1; Genetic diversity; UPGMA; Whitefly.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582012000600006

Diversity analysis of Bemisia tabaci biotypes: RAPD, PCR-RFLP and sequencing of the ITS1 rDNA region
Provedor de dados: Genetics and Molecular Biology
Autores: Rabello,Aline R.; Queiroz,Paulo R.; Simões,Kenya C.C.; Hiragi,Cássia O.; Lima,Luzia H.C.; Oliveira,Maria Regina V.; Mehta,Angela.
The Bemisia tabaci complex is formed by approximately 41 biotypes, two of which (B and BR) occur in Brazil. In this work we aimed at obtaining genetic markers to assess the genetic diversity of the different biotypes. In order to do that we analyzed Bemisia tabaci biotypes B, BR, Q and Cassava using molecular techniques including RAPD, PCR-RFLP and sequencing of the ITS1 rDNA region. The analyses revealed a high similarity between the individuals of the B and Q biotypes, which could be distinguished from the BR individuals. A phylogenetic tree based on ITS1 rDNA sequence was constructed. This is the first report of the ITS1 rDNA sequence of Bemisia tuberculata and of the BR biotype of B. tabaci.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Whitefly; ITS rDNA; Genetic diversity; Phylogenetic analysis.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000300029

Genetic diversity of Bemisia tabaci (Genn.) Populations in Brazil revealed by RAPD markers
Provedor de dados: Genetics and Molecular Biology
Autores: Lima,L.H.C.; Campos,L.; Moretzsohn,M.C.; Návia,D.; Oliveira,M.R.V. de.
Bemisia tabaci (Genn.) was considered a secondary pest in Brazil until 1990, despite being an efficient geminivirus vector in beans and soybean. In 1991, a new biotype, known as B. tabaci B biotype (=B. argentifolii) was detected attacking weed plants and causing phytotoxic problems in Cucurbitaceae. Nowadays, B. tabaci is considered one of the most damaging whitefly pests in agricultural systems worldwide that transmits more than 60 different plant viruses. Little is known about the genetic variability of these populations in Brazil. Knowledge of the genetic variation within whitefly populations is necessary for their efficient control and management. The objectives of the present study were to use RAPD markers (1) to estimate the genetic diversity of B....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Whitefly; Molecular markers; UPGMA; AMOVA.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000200016

A review of geminivirus diseases in vegetables and other crops in Brazil: current status and approaches for management
Provedor de dados: Horticultura Brasileira
Autores: Inoue-Nagata,Alice K; Lima,Mirtes F; Gilbertson,Robert L.
ABSTRACT: Insect-transmitted viruses cause some of the most damaging and economically important diseases of crop plants, especially in tropical and subtropical regions. The geminiviruses, a group of single-stranded DNA viruses with unique twined icosahedral virus particles, are responsible for many of these diseases. Of particular importance are the geminiviruses transmitted by whiteflies (Bemisia tabaci), which are in the genus Begomovirus. This is the largest genus of plant viruses (in terms of number of species), and some are responsible for many devastating diseases in vegetable and fiber crops throughout the world. This review presents the current understanding of begomoviruses, the diseases they cause, and approaches for disease management. An...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Begomovirus; Golden mosaic; Integrated pest management; Whitefly; Bemisia tabaci.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362016000100008

Manejo integrado da mosca-branca Bemisia argentifolii.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: VILLAS BOAS, G. L.; FRANÇA, F. H.; AVILA, A. C. de; BEZERRA, I. C.
Historico; Classificacao sistematica, descricao morfologica, biologia e danos; Ecologia; Hospedeiras e febologia; Metodos de controle de pragas; Manejo integrado.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Batata-doce; Raca poinsetia; Geminivirus; Controle; Biotipo B; Bemissia; Whitefly; Silverleaf whitefly; Poinsettia strain; Geminiviruses; Control; B-biotype.; Inseto; Ipomoea Batatas; Mosca Branca; Praga.; Bemisia argentifolii; Sweet potatoes.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/758442

Biologia da mosca-branca (Bemisia argentifolii) em tomate e repolho.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: MIZUNO, A. C. R.; VILLAS BOAS, G. L.
bitstream/item/103104/1/pa-1.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Brasilia; Distrito Federal; Brasil; Whitefly; Pest insects; Biology.; Brassica Oleracea Capitata; Biologia; Cerrado; Inseto; Lycopersicon Esculentum; Mosca Branca; Praga; Repolho; Tomate.; Bemisia argentifolii; Brazil; Cabbage; Tomatoes.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/758631

Mosca-branca e as geminiviroses do tomateiro.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: EMBRAPA. Centro Nacional de Pesquisa de Hortalicas (Brasilia, DF).
Mosca-branca. Geminiviroses. Controle.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Geminivirose; Transmissao; Controle; Tomato; Pest; Insect; Whitefly; Disease; Vector; Transmission; Geminiviruse; TLCV; TYLCV; Control.; Bemisia Tabaci; Doença; Inseto; Lycopersicon Esculentum; Mosca Branca; Praga; Tomate; Vetor; Vírus.; Bemisia argentifolii.
Ano: 1996
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/756352

First record of Trialeurodes variabilis (Quaintance) (Hemiptera: Aleyrodidae) on Carica papaya L. in the state of Espírito Santo, Brazil
Provedor de dados: Neotropical Entomology
Autores: Culik,Mark P.; Martins,David dos S.
Surveys were conducted to identify whitefly pests of papaya in the state of Espírito Santo, Brazil. The whitefly species Trialeurodes variabilis (Quaintance) is reported for the first time in the state, where it was found on papaya at six locations in Sooretama and Linhares municipalities in October to December 2002 and June 2003.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Whitefly; Papaya.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000500019

Comparative biology of the whitefly Trialeurodes vaporariorum (West.) (Hemiptera - Homoptera: Aleyrodidae) on soybean and bean cultivars
Provedor de dados: Neotropical Entomology
Autores: Campos,Ostenildo R.; Crocomo,Wilson B.; Labinas,Adriana M.
With the development of greenhouse grown crops, the whitefly Trialeurodes vaporariorum (West.) has become an important pest. Aiming at verifying the effect of host on the development of this species, the biology of the whitefly was studied on bean (Phaseolus vulgaris L.) cultivars IAC-Carioca Pyatã, IAPAR-57, Jalo Precoce, IAC-Bico de Ouro, IAC-Maravilha and on soybean (Glycine max L.) cultivar Cristalina. The study was conducted at the Laboratório de Entomologia Agrícola - FCA-UNESP, at 25 ± 3°C temperature, 80 ± 10% RH and 14h photophase. The biological parameters assessed were duration, viability and number of nymphal instars; male and female longevity, oviposition period, number of eggs per female and sex ratio; egg viability and incubation period and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Whitefly; Life table; Insect/plant relationship.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000100020

Natural enemies of Bemisia tabaci (Gennadius) B biotype and Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae) in Brasília, Brazil
Provedor de dados: Neotropical Entomology
Autores: Oliveira,Maria R.V. de; Amancio,Everton; Laumann,Raúl A.; Gomes,Liziane de O.
A survey was conducted in Brasília, DF, from January 1999 to March 2001, on tobacco, cotton, tomato, cabbage, soybean, bean, melon, eggplant and the weed Emilia sonchifolia DC, to collect natural enemies of the whiteflies Bemisia tabaci (Gennadius) and Trialeurodes vaporariorum (Westwood). Fourteen predators, twelve parasitoids and two hyperparasitoids were collected. Among the parasitoids, Encarsia inaron (Walker) is recorded for the first time in South America, and E. basicincta Gahan is a new record for Brazil. E. aleurothrixi Evans &amp;amp; Polaszek is recorded for the first time parasitizing B. tabaci. The lady beetles Nephaspis hydra Gordon and Delphastus davidsoni Gordon are registered for the first time preying on B. tabaci.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Whitefly; Parasitoid; Predator; Hyperparasitoid.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000100023

Influence of trichomes on attractiveness and ovipositional preference of Bemisia tabaci (Genn.) B biotype (Hemiptera: Aleyrodidae) on tomato genotypes
Provedor de dados: Neotropical Entomology
Autores: Oriani,Maria A de G; Vendramim,José D.
Brazil is one of the world's largest tomato producer, but considerable part of the production is lost due to the attack of Bemisia tabaci (Genn.) B biotype. Resistant germoplasm plants can be an important method for B. tabaci control in integrated pest management approaches. The attractiveness and ovipositional preference of B. tabaci for 17 tomato genotypes were evaluated in a free-choice test. Trials were set up in a randomized block design with ten replicates. Each replicate (one tomato plant per pot) was placed in a cage (80 x 50 x 50 cm) and infested with 1,000 adults during four days. Linear correlation tests were applied between the number of insects and eggs and number of trichomes in each tomato genotype. LA716, LA444-1 and PI134418 genotypes were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Whitefly; Solanum lycopersicum; Antixenosis.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000600024

Biological parameters of Bemisia tabaci (Gennadius) biotype B (Hemiptera: Aleyrodidae) on Jatropha gossypiifolia, commercial (Manihot esculenta) and wild cassava (Manihot flabellifolia and M. carthaginensis) (Euphorbiaceae)
Provedor de dados: Neotropical Entomology
Autores: Carabalí,Arturo; Belloti,Anthony C; Montoya-Lerma,James.
Bemisia tabaci (Gennadius) is one of the most important pests of cassava in Africa and several countries of Asia due to the damage caused by direct feeding, the excretion of honeydew, and its capacity as a vector of cassava mosaic geminivirus. There is a general consensus that B. tabaci is a complex of morphologically indistinguishable populations with different biotypes. In the Americas, the polyphagous biotype B does not appear to feed on cassava. Recent studies indicate that it is possible, however, for biotype B to gradually adapt to cassava using phylogenetically related hosts. Therefore, the possibility that some wild species of cassava constitute intermediate hosts in the adaptation process may lead to the establishment of biotype B on commercial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adaptation; Trophic relationship; Whitefly.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000400015

Assessment of physiological aspects of three tomato genotypes infested by Bemisia tabaci (Gennadius) biotype B (Hemiptera: Aleyrodidae)
Provedor de dados: Neotropical Entomology
Autores: Toscano,Luciana C.; Boiça Júnior,Arlindo L.; Maruyama,Wilson I.
The performance of three tomato genotypes (PI 1134417, LA 716 and of Bruna VFN hybrid) was assessed during infestation by Bemisia tabaci (Gennadius) biotype B, in relation to the physiological aspects of plants attacked and not attacked by the insect. The experiment was carried out in a greenhouse at environmental temperature. Thirty-day-old plants were artificially infested with 100 insects/plant for ten days. The Bruna VFN hybrid was damaged physiologically with lower height and mean number of leaves per plant than in the non attacked plants, ten days after infestation. Also, it presented shorter root length and decrease in canopy and root dry matter when compared to the non attacked plants. The wild genotypes (PI 1344417 and LA 716) did not present...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insect; Insect strain; Lycopersicon; Whitefly.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000600016

Estrutura genética populacional de Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) utilizando marcadores microssatélites
Provedor de dados: Neotropical Entomology
Autores: Valle,GE do; Zucchi,MI; Stabellini,NS; Lourenção,AL; Pinheiro,JB.
We aimed to characterize the population genetic structure within and among five Bemisia tabaci (Gennadius) populations collected from different host plants and geographic regions by using microssatelites as a molecular marker. Each population was represented by 19 specimens. The host plants and geographic origins of these populations were described as follows: Pop 1: Squash Barreiras (BA); Pop 2: Cotton Barreiras (BA); Pop 3: Soybean Campinas (SP); Pop 4: Tomato Cruz das Almas (BA); and Pop 5: Soybean Rondonópolis (MT). Six polymorphic loci were observed, which discriminated 31 different alleles in the studied populations, with a mean number of alleles per population of 3.30 (2.67 - 4.00). Using Fisher's Exact test, it was observed that at least three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic variability; Molecular markers; Whitefly.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000200008

Does the presence of weeds affect Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) infestation on tomato plants in a semi-arid agro-ecosystem?
Provedor de dados: Neotropical Entomology
Autores: Bezerra,Mary-Ann S.; Oliveira,Maria R.V. de; Vasconcelos,Simão D.
Integrated Bemisia tabaci (Gennadius) management requires quantitative knowledge on the mechanisms of persistence of pest populations in non-commercial host plants. We investigated B. tabaci oviposition preference among tomato and four weed species, and the insect population fluctuation under field conditions in the semi-arid region. At weekly intervals, we determined the level (number of eggs and nymphs per leaf) and the density of infestation (number of eggs and nymphs per leaf area) in all species. We observed an oviposition preference gradient among the species, with different degrees of attractiveness; Acanthospermum hispidum was the most infested species whereas Amaranthus deflexus was the least infested one. We also detected a significantly higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Whitefly; Weeds; Host preference; Caatinga.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000600015

Characterization of Tomato yellow spot virus, a novel tomato-infecting begomovirus in Brazil
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Calegario,Renata Faier; Ferreira,Sávio de Siqueira; Andrade,Eduardo Chumbinho de; Zerbini,Francisco Murilo.
The objective of this work was the biological and molecular characterization of a begomovirus detected in São Joaquim de Bicas, Minas Gerais, Brazil, named TGV-[Bi2], by determining its host range, complete nucleotide sequence and phylogenetic relationships with other begomoviruses. Biological characterization consisted of a host range study using either sap inoculation or particle bombardment as inoculation methods. The yellow spot virus can infect plants in Solanaceae and Amaranthaceae, including economically importat crops as sweet pepper, and weeds as Datura stramonium and Nicotiana silvestris. For the molecular characterization, the full-length genome (DNA-A and DNA-B) was amplified, cloned and completely sequenced. Sequence comparisons and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lycopersicon esculentum; Bemisia tabaci; ToYSV; Molecular biology; Geminivirus; Whitefly.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007000900016

Toxicity of neem oil to Bemisia tabaci biotype B nymphs reared on dry bean
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Pinheiro,Patricia Valle; Quintela,Eliane Dias; Oliveira,Jaison Pereira de; Seraphin,José Carlos.
The objective of this work was to determine the most susceptible nymphal stage of Bemisia tabaci biotype B to neem (Azadirachta indica A. Juss.) oil applied to dry bean (Phaseolus vulgaris L.) in a screenhouse. A solution of commercial oil (Dalneem) extracted from neem seeds was sprayed directly on each nymphal instar at 0, 0.1, 0.25, 0.5, 1 and 2% concentrations for lethal concentration (LC) determination, and at 0, 0.5 and 1% concentrations for lethal time (LT) determination. The number of living and dead nymphs was recorded five days after spraying for LC determination, and daily during six days for LT determination. The LC50 estimated for fourth instar nymphs occurred at 0.56% concentration. For all instars, LC50 and LC95 were estimated at 0.32 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Azadirachta indica; Phaseolus vulgaris; Immature stages; Lethal concentration; Whitefly.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000400004

Factors affecting the attack rate of Bemisia tabaci on cucumber
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Leite,Germano Leão Demolin; Picanço,Marcelo; Guedes,Raul Narciso Carvalho; Ecole,Carvalho Carlos.
The objective of this work was to determine the effects of rainfall, temperature, predators, parasitoids, plant age, leaf chemical composition, levels of leaf nitrogen and potassium, besides density of leaf trichomes, on attack intensity of Bemisia tabaci biotype B on the Cucumis sativus. An increase in the number of whitefly adults and nymphs per leaf was observed with plant aging. A higher number of whitefly adults per leaf and eggs cm-2 was verified in the apical part than in the middle and bottom part of the plants canopy. However, the higher number of whitefly nymphs was observed in the mid-part than in the apical and bottom part of the plant canopy. The incidence of whitefly nymphs was negatively affected with foliar nitrogen. Pentacosane and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis sativus; Whitefly; Allelochemicals; Nitrogen; Trichomes.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006000800005

Economic impact analysis of marker-assisted breeding for resistance to pests and post harvest deterioration in cassava
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Rudi,   Nderim; Norton,   George W.; Alwang,   Jeffrey Roger; Asumugha,   Godwin N.
Marker-assisted breeding could have a major impact in relieving productivity constraints that cannot as easily or rapidly be relieved by conventional breeding alone. This paper estimates the benefits of using marker-assisted breeding, as compared to conventional breeding alone, in developing cassava varieties resistant to cassava mosaic disease, green mite, whitefly and post-harvest physiological deterioration in Nigeria, Ghana and Uganda. Marker-assisted breeding is estimated to save at least four years in the breeding cycle for varieties resistant to the pests and to result in incremental net benefits over 25 years in the range of $34 to $800 million depending on the country, the particular constraint and various assumptions. Benefits may reach as high...
Tipo: Journal Article
Palavras-chave: Marker-assisted breeding; Impact assessment; Cassava; Green mite; Whitefly; Cassava mosaic disease; Post-harvest physiological deterioration; Crop Production/Industries.
Ano: 2010
URL: http://purl.umn.edu/93862

A new species of Scymnobius Casey (Coleoptera, Coccinellidae, Scymnini) from Pernambuco, Brazil
Provedor de dados: Revista Brasileira de Entomologia
Autores: Giorgi,José Adriano; González,Guillermo.
A new species of Scymnobius Casey (Coleoptera, Coccinellidae, Scymnini) from Pernambuco, Brazil. Scymnobius pernambucensis sp. nov. from Pernambuco, Brazil, is described and illustrated. This is the third species of this genus recorded from Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Ladybird beetle; Predator; Taxonomy; Whitefly.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262014000400002

Molecular detection of Potato yellow vein virus in the natural whitefly vector Trialeurodes vaporariorum, Westwood
Provedor de dados: Revista de Protección Vegetal
Autores: Barragan,Carlos Eduardo; Guzmán-Barney,Mónica.
Potato yellow vein virus (PYVV) expresses yellowing symptoms on plants and it is transmitted by the whitefly vector Trialeurodes vaporariorum Westwood. No molecular viral detection from the vector extracts has been reported to date. The objectives of this study were I) amplification of the PYVV major coat protein (CP) gene from viruliferous vector extracts by RT-PCR using specific primers, II) cloning and III) sequencing and sequences analysis. Some Colombian Solanum phureja (Jus et Buk) field potato plants expressing yellowing symptoms and confirmed PYVV positive by RT-PCR were used as virus donor plants for feeding whiteflies. Viruliferous vectors were obtained by depositing aviruliferous whiteflies on symptomatic leaves and kept in a muslin...
Tipo: Journal article
Palavras-chave: PYVV; RNA; Whitefly; Detection; Vector.
Ano: 2014
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1010-27522014000300002

Biology of Bemisia tabaci (Genn.) B biotype (Hemiptera, Aleyrodidae) on tomato genotypes
Provedor de dados: Scientia Agricola
Autores: Oriani,Maria Auxiliadora de Godoy; Vendramim,José Djair; Vasconcelos,Cristina Jensen.
Brazil is one of the main tomato (Solanum lycopersicum) producers worldwide. Nevertheless, considerable part of the production is lost due to Bemisia tabaci (Genn.) B biotype attacks. Resistant plants can be an important method for controlling this pest in an integrated pest management. Tests for evaluating some biological aspects of B. tabaci were carried out on 18 tomato genotypes, in controlled laboratory greenhouse conditions. Thirty-day-old plants placed in plastic cages were infested with 20 whitefly pairs each, for 24 h. The development of at least 30 eggs in three leaflets per plant (repetition) was observed until adult emergence. The development period of insects grown in LA1335, PI365928 and LA722 genotypes took three days longer when compared to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Whitefly; Antibiosis; Antixenosis.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000100006

Etiology, occurrence and epidemiology of a begomovirus disease in passionflower in the southwest of Bahia
Provedor de dados: Scientia Agricola
Autores: Rodrigues,Gisele Brito; Rocha Sobrinho,Geraldo Gomes; Mituti,Tatiana; Bergamin Filho,Armando; Amorim,Lilian; Rezende,Jorge Alberto Marques; Novaes,Quelmo Silva de.
ABSTRACT: Severe mosaic symptoms, accompanied by yellow spots, abnormally small leaves, fruit malformation and cracking, reduced plant growth, and high levels of whitefly (Bemisia tabaci MEAM1) infestation were observed in passionflower (Passiflora edulis) orchards in southwestern Bahia, Brazil. The aim of this work was to identify the species of begomovirus infecting the passionflowers, its prevalence in southwestern Bahia, and the spatial and temporal dynamics of the disease. Leaf samples from symptomatic plants collected at 57 orchards located in ten counties were evaluated by PCR for begomovirus infection. Complete nucleotide sequences of DNA-A for two isolates revealed 97 % identity with Passionfruit severe leaf distortion virus (PSLDV). The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bemisia tabaci; Geminiviridae; Passifloraceae; Whitefly.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001400337

Development of Bemisia tabaci (Gennadius,1889) biotype B on Lycopersicon spp. genotypes
Provedor de dados: Scientia Agricola
Autores: Marilene,Fancelli; Vendramim,José Djair.
Whiteflies are phytophagous insects, whose nymphs and adults suck the phloem sap, causing direct damage due to host plant weakness. In tomato (Lycopersicon spp.) crops, they are important vectors of limiting fitoviruses. The objective of this study was to determine the effects of Lycopersicon spp. genotypes on Bemisia tabaci (Gennadius, 1889) biotype B development under greenhouse conditions. The evaluated genotypes were LA462 (L. peruvianum), LA716 (L. pennellii), LA1584 (L. pimpinellifolium), LA1609 (L. peruvianum), LA1739 (L. hirsutum), P25 (L. esculentum), PI134417 (L. hirsutum f. glabratum) and Santa Clara (L. esculentum). LA716 was non-preferred for oviposition by the whitefly, which suggests an antixenotic effect. LA1584 showed an antibiotic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bemisia argentifolii; Aleyrodidae; Whitefly; Biology; Tomato.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000400007

No-choice ovipositional nonpreference of Bemisia tabaci (Gennadius) B biotype on tomato genotypes
Provedor de dados: Scientia Agricola
Autores: Oriani,Maria Auxiliadora de Godoy; Vendramim,José Djair; Vasconcelos,Cristina Jensen.
Brazil is one of the main tomato producers worldwide. Nevertheless, 40 to 70% of the production is lost due to Bemisia tabaci (Gennadius) B biotype attacks. Resistant plant germplasm can be an important method for controlling this pest in an integrated pest management program. This research aimed to evaluate the no-choice ovipositional preference of B. tabaci B biotype on 18 tomato genotypes with different densities and types of trichomes testing two screening techniques and to determine the influence of trichomes on whitefly ovipositional preference. Two methods of confinement experiments were used. Leaflets detached from the upper third part of the tomato plants (first experiment) and 30-day-old plants (second experiment) were infested with whiteflies...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum lycopersicum; Plant resistance; Whitefly; Antixenosis; Trichomes.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000200003

Detection and partial characterization of a carlavirus causing stem necrosis of soybean in Brazil
Provedor de dados: Tropical Plant Pathology: fitopatologia brasileira
Autores: Almeida,Álvaro M. R.; Piuga,Fernanda F.; Marin,Silvana R.R.; Kitajima,Elliot W.; Gaspar,José O.; Oliveira,Thalita G. de; Moraes,Tanara G. de.
Stunting and stem necrosis were noticed in soybeans (Glycine max) grown in 2000/2001 in West Central Brazil the same condition was also observed in the following year in plantations as far as 2,000 km from the initial area. Based on transmission (mechanical, graft, insect vector), purification and serology, electron microscopy and molecular studies the causal agent was determined to be a whitefly-borne carlavirus which is possibly related to Cowpea mild mottle virus (CpMMV).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cowpea mild mottle virus; Whitefly; Bemisia tabaci biotype B.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582005000200016

Indigenous and introduced species of the Bemisia tabaci complex in sweet potato crops from Argentina
Provedor de dados: Agriscientia
Autores: Alemandri,V; Martino,J.A; Di Feo,L; Truol,G.
Sweet potato (Ipomoea batatas (L.) Lam) is one of the most important crops worldwide. Recently, the appearance of severe viral symptoms has been observed in sweet potato crops in the pampas region of Argentina and both begomovirus and crinivirus, exclusively transmitted by whiteflies, have been identified. The aim of this study was to identify B. tabaci species from sweet potato crops in Colonia Caroya by analysing mitochondrial cytochrome c oxidase subunit I (mtCOI) sequences. Two previously described haplotypes were identified: New World2 (indigenous species) and MEAM1 (introduced species). The results indicate the presence of both species, which are potential vectors of begomovirus and crinivirus in Argentina.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Whitefly; Mitochondrial cytochrome c oxidase subunit I; Ipomoea batatas.
Ano: 2014
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2014000200005

Sequential sampling of Bemisia tuberculata (Bondar, 1923) (Hemiptera: Aleyrodidae) on cassava crop
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: SILVA,ANTONIO S.; MOTA,THIAGO A.; FERNANDES,MARCOS G.; KASSAB,SAMIR O.
Estimate efficiently of the whitefly population (Bemisia tuberculata Bondar) in cassava, to assist in decision making of pest control is one of the advantages of sequential sampling plans. Therefore, the objective of this study was to determine a sequential sampling plan according to two methods of pest management, using biological and/or chemical control. Samples were obtained in a commercial field of 2.500,00 m2, divided into 100 plots. The visualization method was used for sampling of the upper leaves by counting the number of adults. In total 15 samples were taken weekly from January to April 2012. The spatial distribution model which best fit to the behavior of B. tuberculata adults was the negative binomial distribution. Levels adapted for biological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Decision-making; Level of damage; Manihot esculenta; Pest management; Whitefly.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000200889

Oviposition preference of Bemisia tabaci (Genn.) biotype B (Homoptera: Aleyrodidae) for bean genotypes containing arcelin in the seeds
Provedor de dados: Anais da Sociedade Entomológica do Brasil
Autores: Oriani,Maria A. de G.; Lara,Fernando M.
The oviposition preference of Bemisia tabaci biotype B (Homoptera: Aleyrodidae) for bean (Phaseolus vulgaris L.) genotypes containing arcelin in the seeds was evaluated. The tests were carried out under greenhouse conditions, in the dry and wet seasons, with the following genotypes: ARC 3s, ARC 5s (wild genotypes containing arcelin in the seeds); ARC 1, ARC 2, ARC 3, ARC 4 (near isogenic lines containing arcelin in the seeds - EMBRAPA) and Porrillo 70, Bolinha, IAPAR MD 808 (commercial genotypes without arcelin). In the free choice and no-choice oviposition tests, Bolinha and Porrillo 70 genotypes were preferred for oviposition by that insect. The Bolinha susceptibility could be related to the great number of acicular trichomes presents on its leaves...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Phaseolus vulgaris; Whitefly; Antixenosis; Trichomes.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80592000000300019

Antibiosis effects of wild bean lines containing arcelin on Bemisia tabaci (Genn.) biotype B (Homoptera: Aleyrodidae)
Provedor de dados: Anais da Sociedade Entomológica do Brasil
Autores: Oriani,Maria A. de G.; Lara,Fernando M.
The biology of Bemisia tabaci biotype B (Genn.) on bean (Phaseolus vulgaris L.) genotypes containing arcelin in the seeds was evaluated. Also, biochemical screening of seeds and leaves material of these genotypes were carried out in order to verify if traces of arcelin could be found in its leaves. The tests were conducted under greenhouse conditions, in the dry and wet seasons, with the following genotypes: ARC 3s, ARC 5s (wild genotypes containing arcelin in the seeds); ARC 1, ARC 2, ARC 3, ARC 4 (near isogenic lines containing arcelin in the seeds - EMBRAPA) and Porrillo 70, Bolinha, IAPAR MD 808 (commercial genotypes without arcelin). The wild genotypes, ARC 3s and ARC 5s, showed high levels of antibiosis resistance type, mainly for ARC 5s which...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Phaseolus vulgaris; Whitefly; Biology; Host plant resistance.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80592000000300020

Seasonal dynamics and management of whitefly ( Bemesia tabaci Genn.) in tomato ( Solanum esculentum Mill.)
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Sharma,Devinder; Maqbool,Asifa; Jamwal,Vishav Vir Singh; Srivastava,Kuldeep; Sharma,Ashutosh.
ABSTRACT  Studies on seasonal dynamics of white fly (Bemesia tabaci) on tomato (Solanum esculentum var. Pusa Ruby) revealed that it appeared first during the 13th and reached maximum during 21st standard meteorological week. A positive correlation between adult population and abiotic factors viz. temperature (maximum and minimum) and sunshine hours was observed, whereas humidity (maximum and minimum) and rainfall showed a negative correlation with it. Taken together, the key weather parameters studied, caused 89.00 per cent variation in whitefly population (R2 value). Combination of carbofuran (soil application) + imidacloprid (seed treatment ) + imidacloprid (foliar application) proved significantly superior and caused maximum reduction in whitefly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tomato; Whitefly; Insect pest management.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100423

Aqueous extracts and oil of neem combined with neonicotinoid insecticides against Bemisia tabaci biotype B in melon
Provedor de dados: Ciência Rural
Autores: Trindade,Maria Santana de Araújo; Sousa,Adalberto Hipólito de; Maracajá,Patrício Borges; Sales Júnior,Rui; Andrade,Wilson Galdino de.
This research was aimed at evaluating nymph population density of whitefly (Bemisia tabaci biotype B) in melon plants after treatment with neem-dry-leaf aqueous extracts and neem-oil ( A. Juss.) applied alternately with neonicotinoid insecticides under field conditions. The experimental design was a randomized block, with 6 treatments and 4 replications. The treatments were control (only water); neem-dry-leaf extract at 5% (neem-dry-leaf powder 50g L-1 of water); neem oil (5.0mL L-1 water); chemicals insecticides imidacloprid (30g 25L-1 of water) and acetamiprid (5g 20L-1 of water); neem-dry-leaf extract at 5% weekly alternated with imidacloprid (30g 25L-1 of water) and acetamiprid (5g 20L-1 of water); neem oil (5.0mL L-1 of water) weekly alternated with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Whitefly; Insecticidal plant.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782007000600046