Consulta: subjectFacets:"Aphid"
Registros recuperados: 17
Data/hora: 02/06/2024 08:39:34

Culture-Facilitated Comparative Genomics of the Facultative Symbiont Hamiltonella defensa
Provedor de dados: 5
Autores: Chevignon, Germain; Boyd, Bret M.; Brandt, Jayce W.; Oliver, Kerry M.; Strand, Michael R.
Many insects host facultative, bacterial symbionts that confer conditional fitness benefits to their hosts. Hamiltonella defensa is a common facultative symbiont of aphids that provides protection against parasitoid wasps. Protection levels vary among strains of H. defensa that are also differentially infected by bacteriophages named APSEs. However, little is known about trait variation among strains because only one isolate has been fully sequenced. Generating complete genomes for facultative symbionts is hindered by relatively large genome sizes but low abundances in hosts like aphids that are very small. Here, we took advantage of methods for culturing H. defensa outside of aphids to generate complete genomes and transcriptome data for four strains of...
Tipo: Text
Palavras-chave: Insect; Aphid; Bacteria; Comparative genomics; Parasitoid; Defense.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00635/74665/74590.pdf

A closer look at intraspecific variation of Cerataphis brasiliensis (Hempel) (Hemiptera: Hormaphididae)
Provedor de dados: 82
Autores: Mews,Carina M.; Cabette,Helena S.R.; Albino,Jeyson L.D.
The aim of our study was to characterize Cerataphis brasiliensis Hempel, an aphid of native palm tree of tropical savannas (cerrado), and to record intraspecific variation. We found two parthenogenetic forms of apterous viviparae females of C. brasiliensis. We differentiate the two forms through measurable and qualitative characters: (i) length of cephalic horns, (ii) number of antennal segments, (iii) presence or absence of wax glands, (iv) location of siphunculi.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphid; Morphological character; Arecaceae; Tropical savanna; Cerrado.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000200005

A new species of Hyperomyzus (Neonasonovia) (Hemiptera: Aphididae) from Jamaica
Provedor de dados: 82
Autores: Hall,Tannice A; Garraway,Eric.
Hyperomyzus (Neonasonovia) pullatus Hall &amp;amp; Garraway sp. n (Hemiptera: Aphididae) is described based on apterous specimens collected from Eupatorium sp., (Asteraceae) in Jamaica. Photos and illustrations are provided. It is compared with an undescribed species from Costa Rica. It is distinguished from Hyperomyzus (Neonasonovia) nigra (Baker) by having narrower siphunculi, less secondary rhinaria and a longer rostrum.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphid; Eupatorium; Eupatorium.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2009000600011

A new species of Uroleucon (Hemiptera: Aphididae) on Madia (Asteraceae) in Chile
Provedor de dados: 82
Autores: Delfino,Miguel A.; Gonzáles,Wilfredo L.
Uroleucon is one of very few aphid genera that have species indigenous to South America. A new species of aphid from Chile is described and illustrated, Uroleucon eumadiae sp. nov., living on the two South American species of the genus Madia (Asteraceae): M. sativa Mol. and M. chilensis (Nutt.) Reiche. Morphological characters are discussed and the characters by which this aphid species may be distinguished from related ones are given. The long, hairy last rostral segment of the new species suggests strongly a feeding adaptation, and parallels that of a North American Madia-feeding species in the same genus which is not, however, closely related.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: South America; Aphid; Uroleucon eumadiae; Feeding adaptation.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000200010

Uroleucon bereticum (E.E. Blanchard) (Hemiptera: Aphididae) and its new endemic parasitoid species (Hymenoptera: Braconidae, Aphidiinae) in Argentina
Provedor de dados: 82
Autores: Delfino,Miguel A.; Stary,Petr.
Collections of Uroleucon bereticum (E.E. Blanchard) on Conyza bonariensis (L.) Cronquist were made throughout the National Park "Quebrada del Condorito" at Pampa de Achala, province of Córdoba, Argentina. This aphid species was described as Macrosiphoniella beretica by Blanchard (1922) from apterous viviparous female and the alate viviparous female were unknown. Morphological characteristics of U. bereticum presented in this paper include the re-description of the apterous viviparous female as well as a new description of the alate viviparous female. Very little is known about the aphid parasitoids in Argentina and material of the indigenous endemic aphid species has not been collected up to now. Binodoxys achalensis Starý, sp.n. is described as a new...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphid; Re-description; Binodoxys achalensis; New species.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000500006

Parasitism Rates of Lysiphlebus testaceipes (Cresson) (Hym.: Aphidiidae) on Schizaphis graminum (Rond.) and Aphis gossypii Glover (Hem.: Aphididae)
Provedor de dados: 82
Autores: RODRIGUES,SANDRA M.M.; BUENO,VANDA H.P.
The objective of the present study was to estimate the rates of parasitism of Lysiphlebus testaceipes (Cresson) on Schizaphis graminum (Rond.) and Aphis gossypii Glover under choice and no-choice condition tests. The experiments were carried out in a controlled environmental chamber at 25±1ºC temperature, 70±10% RH, and 12h photophase. Second and third instar aphid nymphs were used as hosts and for each colony one less than a day old L. testaceipes female was used. The previously mated and oviposition inexperienced female remained in contact with the hosts for 24 h. In the choice test 10 colonies of S. graminum and 10 colonies of A. gossypii having sections of sorghum leaves as substrate were used. For the no-choice test 10 colonies of S. graminum...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Insecta; Aphid; Biological control; Parasitoid.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2001000400017

Tempo de busca e de manuseio de larvas de Chrysoperla externa (Hagen, 1861) (Neuroptera, Chrysopidae) alimentadas com Uroleucon ambrosiae (Thomas, 1878) (Hemiptera, Aphididae)
Provedor de dados: 92
Autores: Auad,Alexander M.; Freitas,Sérgio de; Barbosa,Leonardo R.
Searching and handling time of Chrysoperla externa (Hagen, 1861) (Neuroptera, Chrysopidae) larvae fed on Uroleucon ambrosiae (Thomas, 1878) (Hemiptera, Aphididae). The objective of this research was to determine the searching and handling times of three larval instars of C. externa fed on U. ambrosiae at densities of 30, 40 and 50 per vial, with the feeding of the larvae at the preceding instars being U. ambrosiae nymphs or Sitotroga cerealella (Olivier, 1819) eggs. The larvae were maintained at 25 ± 2 ºC, 70 ± 10% RH and a 14-h photophase. A completely randomized design in a 6 x 3 factorial scheme with 12 replicates was adopted. The shortest searching time was found for the 2nd and 3rd instar larvae of C. externa, and this parameter was variable depending...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphid; Functional response; Green lacewing.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262002000400007

Aphid parasitoids (Hymenoptera, Braconidae, Aphidiinae) and their associations related to biological control in Brazil
Provedor de dados: 92
Autores: Starý,Petr; Sampaio,Marcus Vinicius; Bueno,Vanda Helena Paes.
This study evaluated the parasitoid-aphid-plant associations in Brazil with the objective of developing a useful research database for further studies of aphid parasitoid ecology and aphid management. The original material was obtained from collections made in Paraná, Rio Grande do Sul, Minas Gerais, and São Paulo states. The published information on the Aphidiinae in Brazil is revised. The general features of the target parasitoid fauna of Central and South America is summarized and promising biological control programs of some aphid species in Brazil is discussed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphid; Host range; Insect-plant interactions.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262007000100018

Ocorrência de Binodoxys brevicornis (Haliday, 1833) (Hymenoptera, Braconidae, Aphidiinae) no Brasil
Provedor de dados: 92
Autores: Sampaio,Marcus V.; Bueno,Vanda H.P.; Soglia,Maria C.M.; Rodrigues,Sandra M.M.
Specimens of the aphid parasitoid, Binodoxys brevicornis (Haliday, 1833), were reared from the mummies of Cavariella aegopodii (Scopoli, 1763) collected on Foeniculum vulgare (Apiaceae) at the Campus of the Universidade Federal de Lavras, in the city of Lavras, Minas Gerais State on September/2002. This is the first record of B. brevicornis in Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphid; New record; Parasitoid.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262003000400019

Parasitism rate of Myzus persicae (Sulzer) by Diaeretiella rapae (McIntosh) in the presence of an alternative, resistant host
Provedor de dados: 92
Autores: Ferreira,Samira Evangelista; Sampaio,Marcus Vinicius; Silva de Oliveira,Reinaldo; Vasconcelos,Heraldo Luís de.
ABSTRACT The aphids Lipaphis pseudobrassicae (Davis) and Myzus persicae (Sulzer) (Hemiptera: Aphididae) are important Brassicaceae pests, occurring worldwide and causing significant damage to crops. Interspecific variations in the resistance to natural enemies can potentially impact the interaction among aphid populations. Here we evaluated the hypothesis of associational resistance by determining if the presence of resistant aphids (L. pseudobrassicae) reduces the rate of parasitism by Diaeretiella rapae (McIntosh) on non-resistant aphids (M. persicae). The experiment was conducted using collard green plants infested with M. persicae and L. pseudobrassicae either resistant or susceptible to D. rapae. The percentage of parasitism by D. rapae was greater on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphid; Aphididae; Aphidiinae; Competition mediated by parasitoid; Indirect resistance.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262018000100013

Nesidiocoris tenuis Reuter (Hemiptera: Miridae) and Cycloneda sanguinea limbifer (Casey) (Coleoptera: Coccinellidae): behaviour and predatory activity on Myzus persicae Zulzer (Hemiptera: Aphididae)
Provedor de dados: 100
Autores: Duarte,Leticia; Pacheco,Ronal; Quiñones,Madelaine; Martínez,María de los Ángeles; Paes Bueno,Vanda Helena.
The aim of this work was to evaluate the predation and behavior activities of the predatory bug Nesidiocoris tenuis Reuter and the lady beetle Cycloneda sanguinea limbifer (Casey) on the aphid. Myzus persicae Zulzer, as well as their effect on this prey dispersal. The experiments were carried out in an acclimatized room at 23.7±1, 8ºC, RH 62,6±5% and 12 h photofase. The number of aphids on the infested and non-infested plants was recorded after 24 hours. Behavioral activities such as moving, searching, resting, encountering aphids, feeding, encountering aphid exuviae, and cleaning, and the time spent in each one were recorded. C. sanguinea limbifer was more voracious than N. tenuis on M. persicae. The ladybeetle led to more aphid dispersion than N. tenuis;...
Tipo: Journal article
Palavras-chave: Biological control; Bug; Lady beetle; Aphid; Pepper.
Ano: 2014
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1010-27522014000200004

First record and redescription of Binodoxys brevicornis (Hymenoptera: Braconidae: Aphidiinae) from Argentina
Provedor de dados: 99
Autores: Zumoffen,Leticia; Salvo,Adriana; Salto,Cesar E.; Manfrino,Romina G.; Pike,Keith S.
Binodoxys brevicornis (Haliday) is reported for the first time for Argentina. This aphidiine was found parasitizing the aphid Hyadaphis foeniculi (Passerini) feeding on Foeniculum vulgare (Miller), a non-crop plant species commonly occurring near alfalfa crops. Binodoxys brevicornis is redescribed and illustrated.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alfalfa; Aphid; Biological Control; Foeniculum vulgare; Parasitoid.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802013000100009

Primeiro registro de Takecallis taiwanus (Takahashi) (Homoptera: Aphididae) no Brasil
Provedor de dados: 44
Autores: Foureaux,Lúcia V.; Kato,Carlos M.
We report the occurence of the bamboo aphid, Takecallis taiwanus (Takahashi) (Homoptera: Aphididae) in Contagem, Minas Gerais State. This aphid was observed causing injuries on leaves and shoots of bamboo Phyllostachys cf. aurea A &amp;amp; C. Reveerii. This is the first record of this aphid on bamboo in Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Aphid; Bamboo.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591999000100021

Winter prevalence of obligate aphid pathogen Pandora neoaphidis mycosis in the host Myzus persicae populations in southern China: modeling description and biocontrol implication
Provedor de dados: 58
Autores: Zhou,Xiang.
Pandora neoaphidis overwintering had been investigated by monitoring its prevalence in Myzus persicae populations in open fields. Cabbage plants in field plots were weekly taken after mycosis initiation, to count and examine the living and dead aphids infected by P. neoaphidis. Based on the field data, infection levels (I) varied with field temperature (T), relative humidity (RH) and aphid count (numbers of living aphids per plant, N) over days (D), fitting well to the modified logistic equation I=0.91/[1+exp(8.5+(2.0H T H RH-20.2NI0)D)] (r²=0.897), where H T indicated daily hours of low temperature (&lt;4°C), H RH daily hours of high air humidity (&amp;gt;90% RH) and I0 primary infection level. The model demonstrated the abiotic and biotic factors...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Entomopathogenic fungi; Aphid; Epizootic modeling; Entomophthorales; Microbial control.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100038

Plant growth promoting rhizobacteria reduce aphid population and enhance the productivity of bread wheat
Provedor de dados: 58
Autores: Naeem,Muhammad; Aslam,Zubair; Khaliq,Abdul; Ahmed,Jam Nazir; Nawaz,Ahmad; Hussain,Mubshar.
Abstract Plant growth promoting rhizobacteria increase plant growth and give protection against insect pests and pathogens. Due to the negative impact of chemical pesticides on environment, alternatives to these chemicals are needed. In this scenario, the biological methods of pest control offer an eco-friendly and an attractive option. In this study, the effect of two plant growth promoting rhizobacterial strains (Bacillus sp. strain 6 and Pseudomonas sp. strain 6K) on aphid population and wheat productivity was evaluated in an aphid susceptible (Pasban-90) and resistant (Inqlab-91) wheat cultivar. The seeds were inoculated with each PGPR strain, separately or the combination of both. The lowest aphid population (2.1 tiller−1), and highest plant height...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pseudomonas; Bacillus; Aphid; Bread wheat; PGPR; Eco-friendly.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500009

Occurrence of Lysiphlebus testaceipes parasitizing Aphis gossypii in watermelon in the State of Rio Grande do Norte, Brazil
Provedor de dados: 65
Autores: Macedo,Luciano Pacelli Medeiros; Moura Filho,Edmondson Reginaldo; Carvalho,Adriano Soares; Bezerra,Carlos Eduardo Souza; Silveira,Luís Cláudio Paterno.
This is the first report of the parasitoid Lysiphlebus testaceipes (Cresson) as a biological control agent of the aphid Aphis gossypii Glover in watermelon crop in Vale do Açu, RN. It was observed that near the harvest, almost all collected aphids were mummified, and after analyzing the emerged parasitoids, the parasitoid L. testaceipes was identified. Therefore, in the future, this species may be included in A. gossypii integrated management programs.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphid; Biological control; Citrullus lanatus; Insects pest.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000900028

Factors affecting colonization and abundance of Aphis gossypii glover (hemiptera: aphididae) on okra plantations
Provedor de dados: 64
Autores: Leite,Germano Leão Demolin; Picanço,Marcelo; Zanuncio,José Cola; Gusmão,Marcos Rafael.
The control of Aphis gossypii Glover (Hemiptera: Aphididae) on okra Abelmoschus esculentus (L.) (Malvaceae) consist primarily in the use of insecticides, due to the lack of information on other mortality factors. The objective of this study was to determine the effects of predators and parasitoids, height of canopy, plant age, leaf areas, organic compounds leaves, levels of leaf nitrogen and potassium, density of leaf trichomes, total rainfall and median temperature on attack intensity of A. gossypii on two successive A. esculentus var. Santa Cruz plantations. Monthly number estimates of A. gossypii and natural enemies (visual inspection) occurred on bottom, middle and apical parts of 30 plants/plantation (one leaf/plant). Plants senescence, leaf areas and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abelmoschus esculentus; Aphid; Natural enemies; Leaf area; Nitrogen.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542007000200011