The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Gregory A. Evans - One of the best experts on this subject based on the ideXlab platform.
-
Nuevos registros de especies del género Eretmocerus (Hymenoptera: Aphelinidae), parasitoides de Trialeurodes vaporariorum y el complejo Bemisia tabaci (Hemiptera: Aleyrodidae) en Argentina New records of species of the genus Eretmocerus (Hymenoptera:
Sociedad Entomológica Argentina, 2008Co-Authors: Silvia N. López, Gregory A. EvansAbstract:El objetivo de este trabajo es dar a conocer nuevos registros y distribuciones de las especies del género Eretmocerus Haldeman, parasitoides de las dos especies de mosca blanca que tienen mayor importancia económica en cultivos hortícolas y ornamentales en Argentina. Una especie de Eretmocerus Haldeman fue hallada parasitando a Trialeurodes vaporariorum (Westwood) en Santa Fe y Buenos Aires; por sus caracteres morfológicos, se encuentra en el grupo californicus, cercana a corni Haldeman, podría tratarse de una nueva especie. Asimismo, se amplía la distribución geográfica de Eretmocerus mundus Mercet, enemigo natural del complejo Bemisia tabaci (Gennadius), a las provincias de San Juan y Buenos Aires.The objective of this paper is to report new records of species of the genus Eretmocerus Haldeman, parasitoids of the most important whitefly pest species in vegetables and ornamental crops in Argentina. One species was found parasitizing Trialeurodes vaporariorum (Westwood) in Santa Fe and Buenos Aires provinces and it is grouped into californicus group near corni Haldeman, due to its morphological characters. It could be a new species. The known distribution of Eretmocerus mundus Mercet, a parasitoid of Bemisia tabaci (Gennadius), is enlarged to include the provinces of San Juan and Buenos Aires of Argentina
-
Nuevos registros de especies del género Eretmocerus (Hymenoptera: Aphelinidae), parasitoides de Trialeurodes vaporariorum y el complejo Bemisia tabaci (Hemiptera: Aleyrodidae) en Argentina
Sociedad Entomológica Argentina, 2008Co-Authors: Silvia N. López, Gregory A. EvansAbstract:El objetivo de este trabajo es dar a conocer nuevos registros y distribuciones de las especies del género Eretmocerus Haldeman, parasitoides de las dos especies de mosca blanca que tienen mayor importancia económica en cultivos hortícolas y ornamentales en Argentina. Una especie de Eretmocerus Haldeman fue hallada parasitando a Trialeurodes vaporariorum (Westwood) en Santa Fe y Buenos Aires; por sus caracteres morfológicos, se encuentra en el grupo californicus , cercana a corni Haldeman, podría tratarse de una nueva especie. Asimismo, se amplía la distribución geográfica de Eretmocerus mundus Mercet, enemigo natural del complejo Bemisia tabaci (Gennadius), a las provincias de San Juan y Buenos Aires
-
parasites of aleurotrachelus socialis homoptera aleyrodidae from colombia including descriptions of two new species hymenoptera aphelinidae platygasteridae
Florida Entomologist, 1998Co-Authors: Gregory A. Evans, Jose A CastilloAbstract:Five parasite species, including two new species, Encarsia bellottii Evans and Castillo, n. sp. and Amitus macgowni Evans and Castillo, n. sp. were reared from Aleurotrachelus socialis Bondar on cassava, Manihot esculenta, in Colombia. E. bellottii was also reared from Trialeurodes variabilis (Quaintance) on cassava. The new species are described and illustrated.
Cáceres Ricardo - One of the best experts on this subject based on the ideXlab platform.
-
Heteroptera míridos predadores de Trialeurodes vaporariorum (Westwood), em particular tupiocoris cucurbitaceus (Spinola) observado na região central do Chile
'Salesian Polytechnic University of Ecuador', 2018Co-Authors: Araya Clericus, Jaime Eduardo, Cáceres RicardoAbstract:Updated information has been revised and is presented on heteropteran (Miridae) predators with potential in biological control of whiteflies, Macrolophus pygmaeus Rambur (formerly M. caliginosus Wagner), and mostly on Tupiocoris cucurbitaceus (Spinola), which has been observed preying on the whitefly Trialeurodes vaporariorum (Westwood) (Trialeurodidae) on tobacco plants and greenhouse tomato in the Metropolitan region, central Chile.Se presenta una revisión actualizada sobre heterópteros (Miridae) depredadores con potencial para el control biológico de mosquitas blancas, Macrolophus pygmaeus Rambur (anteriormente M. caliginosusWagner), y en particular Tupiocoris cucurbitaceus (Spinola) sobre la mosquita blanca Trialeurodes vaporariorum (Westwood) (Trialeurodidae) en plantas de tabaco y tomate de invernadero en la Región Metropolitana, Chile central.Apresenta-se uma visão atualizada sobre os heteropteras (Miridae) depredadores com potencial para o controle biológico de mosquitos brancos, Macrolophus pygmaeus Rambur (antigamente M. caliginosus Wagner), e em particular Tupiocoris cucurbitaceus (Spinola) mosca branca Trialeurodes vaporariorum (Westwood) (Trialeurodidae) em plantas de tabaco e tomate de estufa na Região Metropolitana, na região do Chile central
-
HETERÓPTEROS MÍRIDOS DEPREDADORES DE Trialeurodes vaporariorum (WESTWOOD), EN PARTICULAR tupiocoris cucurbitaceus (SPINOLA) OBSERVADO EN CHILE CENTRAL
2018Co-Authors: Araya, Jaime E., Cáceres RicardoAbstract:Se presenta una revisión actualizada sobre heterópteros (Miridae) depredadores con potencial para el control biológico de mosquitas blancas, Macrolophus pygmaeus Rambur (anteriormente M. caliginosusWagner), y en particular Tupiocoris cucurbitaceus (Spinola) sobre la mosquita blanca Trialeurodes vaporariorum (Westwood) (Trialeurodidae) en plantas de tabaco y tomate de invernadero en la Región Metropolitana, Chile central.// Updated information has been revised and is presented on heteropteran (Miridae) predators with potential in biological control of whiteflies, Macrolophus pygmaeus Rambur (formerly M. caliginosus Wagner), and mostly on Tupiocoris cucurbitaceus (Spinola), which has been observed preying on the whitefly Trialeurodes vaporariorum (Westwood) (Trialeurodidae) on tobacco plants and greenhouse tomato in the Metropolitan region, central Chile
Silvia N. López - One of the best experts on this subject based on the ideXlab platform.
-
Nuevos registros de especies del género Eretmocerus (Hymenoptera: Aphelinidae), parasitoides de Trialeurodes vaporariorum y el complejo Bemisia tabaci (Hemiptera: Aleyrodidae) en Argentina New records of species of the genus Eretmocerus (Hymenoptera:
Sociedad Entomológica Argentina, 2008Co-Authors: Silvia N. López, Gregory A. EvansAbstract:El objetivo de este trabajo es dar a conocer nuevos registros y distribuciones de las especies del género Eretmocerus Haldeman, parasitoides de las dos especies de mosca blanca que tienen mayor importancia económica en cultivos hortícolas y ornamentales en Argentina. Una especie de Eretmocerus Haldeman fue hallada parasitando a Trialeurodes vaporariorum (Westwood) en Santa Fe y Buenos Aires; por sus caracteres morfológicos, se encuentra en el grupo californicus, cercana a corni Haldeman, podría tratarse de una nueva especie. Asimismo, se amplía la distribución geográfica de Eretmocerus mundus Mercet, enemigo natural del complejo Bemisia tabaci (Gennadius), a las provincias de San Juan y Buenos Aires.The objective of this paper is to report new records of species of the genus Eretmocerus Haldeman, parasitoids of the most important whitefly pest species in vegetables and ornamental crops in Argentina. One species was found parasitizing Trialeurodes vaporariorum (Westwood) in Santa Fe and Buenos Aires provinces and it is grouped into californicus group near corni Haldeman, due to its morphological characters. It could be a new species. The known distribution of Eretmocerus mundus Mercet, a parasitoid of Bemisia tabaci (Gennadius), is enlarged to include the provinces of San Juan and Buenos Aires of Argentina
-
Nuevos registros de especies del género Eretmocerus (Hymenoptera: Aphelinidae), parasitoides de Trialeurodes vaporariorum y el complejo Bemisia tabaci (Hemiptera: Aleyrodidae) en Argentina
Sociedad Entomológica Argentina, 2008Co-Authors: Silvia N. López, Gregory A. EvansAbstract:El objetivo de este trabajo es dar a conocer nuevos registros y distribuciones de las especies del género Eretmocerus Haldeman, parasitoides de las dos especies de mosca blanca que tienen mayor importancia económica en cultivos hortícolas y ornamentales en Argentina. Una especie de Eretmocerus Haldeman fue hallada parasitando a Trialeurodes vaporariorum (Westwood) en Santa Fe y Buenos Aires; por sus caracteres morfológicos, se encuentra en el grupo californicus , cercana a corni Haldeman, podría tratarse de una nueva especie. Asimismo, se amplía la distribución geográfica de Eretmocerus mundus Mercet, enemigo natural del complejo Bemisia tabaci (Gennadius), a las provincias de San Juan y Buenos Aires
Correa, Luiz S. - One of the best experts on this subject based on the ideXlab platform.
-
Whiteflies (Hemiptera: Aleyrodidae) and the predator Delphastus pusillus (Le Conte) (Coleoptera: Coccinellidae) on papaya tree (Carica papaya L.) grown under screened conditions
Sociedade Entomológica do Brasil, 2001Co-Authors: Vieira, Marineide R., Correa, Luiz S.Abstract:Em fevereiro e outubro de 1998, na área experimental da Fazenda de Ensino e Pesquisa da UNESP no município de Selvíria-MS (latitude 20° 22' S, longitude 51° 22' W, altitude 335 m), foi constatada a presença de mosca branca em mamoeiro cultivar Baixinho de Santa Amália, plantado no interior de um telado com malha de 2 x 2 mm. Essa área fazia parte de um experimento visando determinar o efeito do cultivo em ambiente protegido sobre o desenvolvimento das plantas, a produção de frutos e a ocorrência do mosaico do mamoeiro. Nas duas ocasiões os insetos foram enviados ao Centro de Recursos Genéticos e Biotecnologia (CENARGEN) da EMBRAPA para identificação. Na primeira infestação o material foi identificado como Trialeurodes sp. e na infestação de outubro como Bemisia tabaci biótipo B . Nos dois casos havia grande quantidade de ninfas nas folhas maduras e de adultos nas folhas novas. Para Trialeurodes sp. foi realizada uma contagem de ninfas em dezoito folhas, em cinco áreas de 1 cm² por folha, distribuídas ao acaso, encontrando-se a média de 7,6 ninfas por cm². Como conseqüência da presença das duas espécies, o único dano observado foi um intenso desenvolvimento de fumagina recobrindo completamente a superfície das folhas, que acabaram por secar e cair. A infestação de B. tabaci biótipo B foi controlada pela presença de larvas e adultos do coccinelídeo Delphastus pusillus (LeConte) que alimentavam-se vorazmente das ninfas presentes.We report the presence of whitefly species at the Experimental Farm of UNESP, located in Selvíria, state of Mato Grosso do Sul, Brazil ( 20°22' latitude S, 51°22' longitude W, altitude 335 m), in February and October 1998. These insects were found on papaya trees cultivar Baixinho de Santa Amália, grown under screened conditions (2 mm x 2 mm mash). The goal of the original experiment was to determine the effect of growing the cultivar under a protected environment on the development of the trees, fruit production and incidence of the "papaya ringspot virus". Whitefly specimens were sent to the Center of Genetic Resources and Biotechnology (CENARGEN) of EMBRAPA, for identification. The specimens collected in February were identified as Trialeurodes sp. and those collected in October were recognized as Bemisia tabaci biotype B. In both ocasions there were great numbers of nymphs on mature leaves and of adults on young leaves. We counted the number of Trialeurodes nymphs in eighteen leaves, in five areas of 1 cm² per leaf, distributed at random, where we found an average of 7.6 nymphs/cm². The only damage associated with the presence of whitefly of both species was the intense development of `sooty molds', covering completely the leaves, which wilted and fell. The infestation of B. tabaci biotype B was controlled by larvae and adults of the coccinellid Delphastus pusillus (LeConte), which fed avidly on the whitefly nymphs
-
Ocorrência de moscas brancas (Hemiptera: Aleyrodidae) e do predador Delphastus pusillus (LeConte) (Coleoptera: Coccinellidae) em mamoeiro (Carica papaya L.) sob cultivo em ambiente protegido
Sociedade Entomológica do Brasil, 2001Co-Authors: Vieira, Marineide R., Correa, Luiz S.Abstract:Em fevereiro e outubro de 1998, na área experimental da Fazenda de Ensino e Pesquisa da UNESP no município de Selvíria-MS (latitude 20° 22' S, longitude 51° 22' W, altitude 335 m), foi constatada a presença de mosca branca em mamoeiro cultivar Baixinho de Santa Amália, plantado no interior de um telado com malha de 2 x 2 mm. Essa área fazia parte de um experimento visando determinar o efeito do cultivo em ambiente protegido sobre o desenvolvimento das plantas, a produção de frutos e a ocorrência do mosaico do mamoeiro. Nas duas ocasiões os insetos foram enviados ao Centro de Recursos Genéticos e Biotecnologia (CENARGEN) da Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) para identificação. Na primeira infestação o material foi identificado como Trialeurodes sp. e na infestação de outubro como Bemisia tabaci biótipo B . Nos dois casos havia grande quantidade de ninfas nas folhas maduras e de adultos nas folhas novas. Para Trialeurodes sp. foi realizada uma contagem de ninfas em dezoito folhas, em cinco áreas de 1 cm² por folha, distribuídas ao acaso, encontrando-se a média de 7,6 ninfas por cm². Como conseqüência da presença das duas espécies, o único dano observado foi um intenso desenvolvimento de fumagina recobrindo completamente a superfície das folhas, que acabaram por secar e cair. A infestação de B. tabaci biótipo B foi controlada pela presença de larvas e adultos do coccinelídeo Delphastus pusillus (LeConte) que alimentavam-se vorazmente das ninfas presentes.We report the presence of whitefly species at the Experimental Farm of UNESP, located in Selvíria, state of Mato Grosso do Sul, Brazil ( 20°22' latitude S, 51°22' longitude W, altitude 335 m), in February and October 1998. These insects were found on papaya trees cultivar Baixinho de Santa Amália, grown under screened conditions (2 mm x 2 mm mash). The goal of the original experiment was to determine the effect of growing the cultivar under a protected environment on the development of the trees, fruit production and incidence of the papaya ringspot virus. Whitefly specimens were sent to the Center of Genetic Resources and Biotechnology (CENARGEN) of Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA), for identification. The specimens collected in February were identified as Trialeurodes sp. and those collected in October were recognized as Bemisia tabaci biotype B. In both ocasions there were great numbers of nymphs on mature leaves and of adults on young leaves. We counted the number of Trialeurodes nymphs in eighteen leaves, in five areas of 1 cm² per leaf, distributed at random, where we found an average of 7.6 nymphs/cm². The only damage associated with the presence of whitefly of both species was the intense development of `sooty molds', covering completely the leaves, which wilted and fell. The infestation of B. tabaci biotype B was controlled by larvae and adults of the coccinellid Delphastus pusillus (LeConte), which fed avidly on the whitefly nymphs
Marisa Skaljac - One of the best experts on this subject based on the ideXlab platform.
-
genetic variation of the greenhouse whitefly Trialeurodes vaporariorum hemiptera aleyrodidae among populations from serbia and neighbouring countries as inferred from coi sequence variability
Bulletin of Entomological Research, 2014Co-Authors: Mirjana Prijovic, Marisa Skaljac, Katja Zanic, Tanja Drobnjakovic, Pantelija Peric, Dejan Marcic, Jasna PuizinaAbstract:The greenhouse whitefly Trialeurodes vaporariorum Westwood, 1856 (Hemiptera: Aleyrodidae) is an invasive and highly polyphagous phloem-feeding pest of vegetables and ornamentals. Trialeurodes vaporariorum causes serious damage due to direct feeding and transmits several important plant viruses. Excessive use of insecticides has resulted in significantly reduced levels of susceptibility of various T. vaporariorum populations. To determine the genetic variability within and among populations of T. vaporariorum from Serbia and to explore their genetic relatedness with other T. vaporariorum populations, we analysed the mitochondrial cytochrome c oxidase I (COI) sequences of 16 populations from Serbia and six neighbouring countries: Montenegro (three populations), Macedonia (one population) and Croatia (two populations), for a total of 198 analysed specimens. A low overall level of sequence divergence and only five variable nucleotides and six haplotypes were found. The most frequent haplotype, H1, was identified in all Serbian populations and in all specimens from distant localities in Croatia and Macedonia. The COI sequence data that was retrieved from GenBank and the data from our study indicated that H1 is the most globally widespread T. vaporariorum haplotype. A lack of spatial genetic structure among the studied T. vaporariorum populations, as well as two demographic tests that we performed (Tajima’s D value and Fu’s Fs statistics), indicate a recent colonisation event and population growth. Phylogenetic analyses of the COI haplotypes in this study and other T. vaporariorum haplotypes that were retrieved from GenBank were performed using Bayesian inference and medianjoining (MJ) network analysis. Two major haplogroups with only a single unique nucleotide difference were found: haplogroup 1 (containing the five Serbian haplotypes and those previously identified in India, China, the Netherlands, the United Kingdom, Morocco, Reunion and the USA) and haplogroup 3 (containing the
-
diversity and localization of bacterial symbionts in three whitefly species hemiptera aleyrodidae from the east coast of the adriatic sea
Bulletin of Entomological Research, 2013Co-Authors: Marisa Skaljac, Katja Zanic, Snježana Hrncic, Sanja Radonjic, Tatjana Perovic, Murad GhanimAbstract:: Several whitefly species (Hemiptera: Aleyrodidae) are cosmopolitan phloem-feeders that cause serious damage in numerous agricultural crops. All whitefly species harbor a primary bacterial symbiont and a diverse array of secondary symbionts which may influence several aspects of the insect's biology. We surveyed infections by secondary symbionts in Bemisia tabaci (Gennadius), Trialeurodes vaporariorum (Westwood) and Siphoninus phillyreae (Haliday) from areas in the east cost of the Adriatic Sea. Both the Middle East-Asia Minor 1 (MEAM1) and Mediterranean (MED) B. tabaci genetic groups were detected in Montenegro, whereas only the MED was confirmed in Croatia. Trialeurodes vaporariorum and S. phillyreae were found in all areas surveyed. MEAM1 and MED exhibited similarity to previously reported infections, while populations of T. vaporariorum from Montenegro harbored Rickettsia, Wolbachia and Cardinium in addition to previously reported Hamiltonella and Arsenopnohus. Siphoninus phillyreae harbored Hamiltonella, Wolbachia, Cardinium and Arsenophonus, with the latter appearing in two alleles. Multiple infections of all symbionts were common in the three insect species tested, with some reaching near fixation. Florescent in situ hybridization showed new localization patterns for Hamiltonella in S. phillyreae, and the morphology of the bacteriosome differed from that observed in other whitefly species. Our results show new infections with bacterial symbionts in the whitefly species studied. Infections with the same symbionts in reproductively isolated whitefly species confirm complex relationships between whiteflies and bacterial symbionts, and suggest possible horizontal transfer of some of these bacteria.
-
co infection and localization of secondary symbionts in two whitefly species
BMC Microbiology, 2010Co-Authors: Marisa Skaljac, Svetlana Kontsedalov, Katja Zanic, Murad GhanimAbstract:Background Whiteflies are cosmopolitan phloem-feeding pests that cause serious damage to many crops worldwide due to direct feeding and vectoring of many plant viruses. The sweetpotato whitefly Bemisia tabaci (Gennadius) and the greenhouse whitefly Trialeurodes vaporariorum (Westwood) are two of the most widespread and damaging whitefly species. To complete their unbalanced diet, whiteflies harbor the obligatory bacterium Portiera aleyrodidarum. B. tabaci further harbors a diverse array of secondary symbionts, including Hamiltonella, Arsenophonus, Cardinium, Wolbachia, Rickettsia and Fritschea. T. vaporariorum is only known to harbor P. aleyrodidarum and Arsenophonus. We conducted a study to survey the distribution of whitefly species in Croatia, their infection status by secondary symbionts, and the spatial distribution of these symbionts in the developmental stages of the two whitefly species.
