Consulta: subjectFacets:"Aphids"
Registros recuperados: 22
Data/hora: 07/06/2024 06:27:22

Reproduction and fertility life table of three aphid species (Macrosiphini) at different temperatures
Provedor de dados: 92
Autores: Conti,Bruno F. De; Bueno,Vanda Helena P.; Sampaio,Marcus V.; Sidney,Livia A.
Temperature is a key abiotic factor influencing the development and reproduction of aphids. The effect of temperature on the reproduction of three aphid species Aulacorthum solani (Kaltenbach), Macrosiphum euphorbiae (Thomas) and Uroleucon ambrosiae (Thomas) (Aphididae, Macrosiphini) has been investigated and fertility life tables were determined. Nymphs were reared in climatic chambers at temperatures of 16, 19, 22, 25, and 28 ± 1ºC, RH 70 ± 10% and 12 h photophase. Female adult aphids developed at these temperatures were then used in experiments in which pre-reproductive and reproductive periods were evaluated every 24 h. In addition, the number of nymphs produced and longevity were determined at each temperature. The reproduction period of A. solani and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphids; Growing parameters; Intrinsic rate of increase; Lettuce; Longevity.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000400018

Asymmetric intraguild predation of Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) on a native Coccinellidae guild
Provedor de dados: 92
Autores: Castro-Guedes,Camila Fediuk de; Almeida,Lúcia Massutti de; Moura,Mauricio Osvaldo.
Abstract Harmonia axyridis is an exotic species that can cause serious impacts on native biodiversity in areas where it is introduced to act as a biological control agent. This predator is often involved with intraguild predation, in most cases with aphids predators. Here, we report the results of experiments designed to understand the outcome of the invasion of H. axyridis on native coccinellid aphidophagous guilds using intraguild predation as a theoretical framework. Tests were conducted to determine the interactions between 1st and 4th instars larvae and H. axyridis adults, with Cycloneda sanguinea, Cycloneda pulchella, Eriopis connexa and Hippodamia convergens larvae, as well as eggs predation rate. Two treatments were used: absence and presence of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphids; Biological control; Cinara atlantica; Invasive species; Non-target organisms; Predator.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262020000100202

Effect of different diets on biology, reproductive variables and life and fertility tables of Harmonia axyridis (Pallas) (Coleoptera, Coccinellidae)
Provedor de dados: 92
Autores: de Castro-Guedes,Camila Fediuk; de Almeida,Lúcia Massutti; do Rocio Chiarello Penteado,Susete; Moura,Mauricio Osvaldo.
ABSTRACT The biology, reproductive variables and population growth indicators of Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) fed on three diets, namely Cinara atlantica (Wilson, 1919) (Hemiptera: Aphididae), Brevicoryne brassicae (Linnaeus, 1758) (Hemiptera: Aphididae), and frozen eggs of Anagasta kuehniella (Zeller, 1879) (Lepidoptera: Pyralidae), were evaluated. With all three diets, birth rate was higher than mortality, resulting in positive rm values and thus indicating population growth. Under the conditions used in the experiments, H. axyridis was able to survive, develop and reproduce normally. This demonstrates that are different kind of food that can be essential for supporting the reproduction of some species of Coccinellidae,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphids; Development time; Harlequin ladybird; Life table.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262016000300260

Potencial de alimentação de Chrysoperla externa (Hagen, 1861) (Neuroptera, Chrysopidae) em diferentes densidades de Uroleucon ambrosiae (Thomas, 1878) (Hemiptera, Aphididae)
Provedor de dados: 92
Autores: Auad,Alexander M.; Freitas,Sérgio de; Barbosa,Leonardo R.
Feeding potential of Chrysoperla externa (Hagen) (Neuroptera, Chrysopidae) in different densities of Uroleucon ambrosiae (Thomas) (Hemiptera, Aphididae). The feeding potential of 2nd and 3rd instar larvae of Chrysoperla externa (Hagen, 1861) in relation to different densities of 30, 40 and 50 nymphs of Uroleucon ambrosiae (Thomas, 1878) at 3rd and 4th instars was evaluated. The treatments were individualized into 2.5 cm in diameter and 8.5 cm tall flat bottom glass vials and maintained in a controlled environmental chamber at 25±2 ºC temperature, 70±10% RH and 14 h photophase. A completely randomized experimental design with 10 replications was used. The consumption of the prey nymphs by the predator larvae was evaluated after 1, 2, 4, 8, 16 and 24 h from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphids; Biological control; Green lacewing; Predation.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262003000100003

First record of larvae of Allograpta exotica Wiedemann (Diptera, Syrphidae) preying on Aphis gossypii Glover (Hemiptera, Aphididae) in watermelon in Brazil
Provedor de dados: 92
Autores: Sturza,Vinícius Soares; Dorfey,Cecília; Poncio,Sônia; Dequech,Sônia Thereza Bastos; Bolzan,Anderson.
First record of larvae of Allograpta exotica Wiedemann (Diptera, Syrphidae) preying on Aphis gossypii Glover (Hemiptera, Aphididae) in watermelon in Brazil. Brazil is one of the largest world producers of watermelon (Citrullus lanatus Thumb. Mansf.) and Aphis gossypii Glover, 1877 (Hemiptera, Aphididae) is among the most important pest on this crop. Larvae of Allograpta exotica Wiedemann, 1830 (Diptera, Syrphidae) were found preying on A. gossypii in watermelon crop, in Santa Maria, Rio Grande do Sul State, what represents the first report of this tritrophic association in Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphids; Cucurbit; Predator; Tritrophic association.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000200019

Aphididae (Hemiptera) on ornamental plants in Córdoba (Argentina)
Provedor de dados: 99
Autores: Szpeiner,Alfonsina.
In 30 surveys across Cordoba city and surroundings (Argentina) I recorded, from November 2001 to May 2002, a total of 109 ornamental plants infested with aphid colonies. Surveys were conducted in the local botanical garden as well as homestead gardens and nurseries. Seventeen species of aphids were identified, 4 of which are new species in the area, from 47 ornamental plants. In a total of 59 plant/aphid associations, 38 new associations were found. I present the first record of aphids colonizing Cactaceae in Argentina. Most aphid colonies were medium and a high proportion (more than 40%) showed alate individuals. The most frequent aphid species, Aphis gossypii Glover and Aphis craccivora Koch were especially associated with the most frequent damages:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphids; Ornamental plants; Richness; Damages; Urban areas.
Ano: 2008
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802008000100006

Biological aspects and life table of Uroleucon ambrosiae (Thomas, 1878) as a function of temperature
Provedor de dados: 63
Autores: Auad,Alexander Machado; Moraes,Jair Campos de.
The aphid Uroleucon ambrosiae (Thomas) is considered a pest of hidroponically-grown lettuce, but basic and applied information on its control are scarce in Brazil. The aim of this study was to determine the effect of different temperatures on biological aspects and life history of U. ambrosiae (Thomas) developing on hydroponic lettuce (Lactuca sativa L.) crop. Newly emerged nymphs were placed on 4-cm discs of hydroponic lettuce, var. Verônica, which were maintained on 5-cm Petri dishes, at temperatures of 15, 20 and 25ºC and 14 h photophase, and inside a greenhouse, within micro-cages at room temperature. The duration of development in all nymphal stages varied inversely to temperature. Nymphs maintained at 20ºC and 25ºC, had similar development period....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Aphids; Biology; Climatic factors.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400008

1977 Corn and sorghum insects annual report
Provedor de dados: 106
Autores: Boonsom Meksongsee; Panya Poonyathawon; Ocha Prachuabmoh; Auranuj Kongkanjana; Arunee Wongkobrat; Malee Chawanapong; Uthai Sangkasuwan; Watchara Wongkumhang; Thalearngsak Weerawooth.
11 tables
Palavras-chave: Corn; Maize; Sorghum; Sweet corn; Pest insects; Borers; Chilo sacchariphagus; Aphids; Armyworms; Mythimna separata; Ostrinia furnacalis; Life cycle; Infestation; Insecticides; Pesticides; Insect control; Yields; Losses; ข้าวโพด; ข้าวฟ่าง; หนอนเจาะลำต้น; เพลี้ยอ่อน; หนอนเจาะฝัก; แมลงที่เป็นประโยชน์; สารกำจัดแมลง.
Ano: 1977
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3930

Corn and sorghum insects 1976 annual report
Provedor de dados: 106
Autores: Boonsom Meksongsee; Panya Poonyathawon; Ocha Prachuabmoh; Auranuj Kongkanjana; Arunee Wongkobrat; Malee Chawanapong; Uthai Sangkasuwan; Watchara Wongkumhang; Thalearngsak Weerawooth.
2 ill., 19 tables
Palavras-chave: Corn; Maize; Sorghum; Insect pests; Thrips; Aphids; Corn borers; Webworms; Rhopalosiphum maidis; Ostrinia furnacalis; Aphis sacchari; Frankliniella williamsi; Chilo auricilius; Stenachroia elongella; Earwig; Proreus similans; Biology; Striped borer; Life cycle; Adoretus compressus; Mythimna separata; Sitophilus oryzae; Insecticides; Insect control; Pest resistance; ข้าวโพด; ข้าวฟ่าง; แมลงศัตรู; เพลี้ยไฟ; เพลี้ยอ่อน; หนอนเจาะฝัก; หนอนใย.
Ano: 1976
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3878

Report on entomology
Provedor de dados: 106
Autores: Ocha Prachuabmoh; Boonsom Meksongsee; Auranuj Kongkanjana; Malee Chawanapong; Watchara Wongkumhang; Panya Poonyathawon; Arunee Wongkobrat; Uthai Sangkasuwan.
13 tables
Palavras-chave: Corn; Maize; Sorghum; Insect pests; Thrips; Aphids; Corn borers; Armyworms; Shoot fly; Mythimna separata; Webworms; Rose beetle; Adoretus compressus; Tachinid fly; Tachina; Encytrid; Litomastix; Ostrinia furnacalis; Biology; Insecticides; Insect control; Chemical control; ข้าวโพด; ข้าวฟ่าง; แมลงศัตรูพืช; เพลี้ยไฟ; เพลี้ยอ่อน; หนอนเจาะลำต้น; หนอนเจาะฝัก; หนอนใย; ด้วงกุหลาบ; สารกำจัดแมลง.
Ano: 1975
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3845

Richness and diversity of aphids (Homoptera, Aphididae) along an altitudinal gradient in the Serra do Mar, Paraná, Brazil
Provedor de dados: 104
Autores: Lazzarotto,Crisleide Maria; Lázzari,Sonia Maria Noemberg.
The lack of bioecological studies on aphids in regions with complex floristic and faunistic structure, such as the Atlantic Tropical Rain Forest, lead to the initiation of this research. The objectives were to determine species richness and diversity of aphids and to investigate the influence of altitude and environmental perturbations on aphid populations. The collections were made with yellow pan traps at 11 sites with altitudes from -10 m to 1000 m above sea level (a.s.l.), in the Serra do Mar, Paraná, Brazil, from December 1993 to December 1994. Richness and diversity of aphids were greatest at 85 m a.s.l. This site was characterized by three distinct floral communities: primary vegetation, secondaiy vegetation in successional stages, and secondary...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphids; Diversity; Equitability; Richness; Altitude.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000400016

Effect of anonaceous extracts on Aphis gossypii (Glover, 1887) (Hemiptera: Aphididae) and selectivity to Eriopis connexa (Germar, 1824) (Coleoptera: Coccinellidae)
Provedor de dados: 1
Autores: Santos, Lindinalva dos; Trindade, Roseane Cristina Prédes; Santos, Djison Silvestre dos; Dias, Mirandy dos Santos; Broglio, Sônia Maria Forti; Lemos, Eurico Eduardo Pinto de.
 The effects of ethanolic and hexanic extracts of soursop and sugar apple (EES, EHS, EESA and EHSA, respectively) on Aphis gossypii (Hemiptera: Aphididae) and its natural enemy Eriopis connexa (Coleoptera: Coccinellidae) by contact exposure, residual effect and ingestion tests were evaluated. The estimated LC50 and LC99 values for A. gossypii were 0.39% and 5.47% for (EESA); 0.23% and 1.19% for (EES); 0.47% and 4.39% for (EHSA); and 0.42% and 6.38% for (EHS), respectively. Considering contact exposure, EES at 0.23% was innocuous, and EHS at 0.42% was slightly harmful; for adult ladybugs, only EESA (5.47%) was classified as slightly harmful, with the other treatments classified as harmless. The results were similar for the residual effect. For selectivity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphids; Lethal concentrations; Ladybug; Annona squamosa; Annona muricata.; Controle biológico.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/36267

Insecticidal activity of essential oil from Eucalyptus globulus against Aphis nerii (Boyer) and Gynaikothrips ficorum (Marchal)
Provedor de dados: 114
Autores: Russo,S; Yaber Grass,M. A; Fontana,H. C; Leonelli,E.
Aphids and thrips are very important pest species of many greenhouse and field plants in the world. In recent years, there have been attempts to identify plants for their insecticidal property with a view to find out suitable alternatives to the indiscriminate use of chemical pesticides, which are a risk for human health and the environment. The aim of this work was to evaluate the insecticidal effect of Eucalyptus globulus Labill essential oil (EO) against Aphis nerll Boyer de Fonscolombe (Hemiptera: Aphididae) and Gynaikothrips ficorum Marchal (Thysanoptera: Ploeothridae). The EO was extracted by hydrodistillation and the bioassay was evaluated by toxicity contact method, using solutions at different concentrations and for different time intervals. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Secondary metabolites; Thrips; Aphids; Eucalyptus globulus.
Ano: 2018
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2018000100007

Detection of Citrus sudden death-associated virus and Haplotypes of Citrus tristeza virus in Toxoptera citricida and Aphis spiraecola and implication on citrus sudden death in Brazil
Provedor de dados: 115
Autores: Loeza-Kuk,Emiliano; Ochoa-Martínez,Daniel L.; Mora-Aguilera,Gustavo; Rivas-Valencia,Patricia; Gutiérrez-Espinosa,M. Alejandra; Cintra de Jesús Junior,Waldir; Villegas-Monter,Ángel; Arno-Wulff,Nelson; Perez-Molphe-Balch,Eugenio.
Individuals of Toxoptera citricida (Kirkaldy) and Aphis spiraecola (Patch) collected in 16 commercial citrus orchards of the São Paulo and Minas Gerais States of Brazil were analyzed for virus presence. Orchards of Minas Gerais were selected because citrus trees exhibit symptoms of citrus sudden death (CSD) and in São Paulo due the presence of severe strains of Citrus tristeza virus (CTV), in order to detect genomic sequences of any of these strains that could be associated to CSD. Samples made up of 20 aphids from the localities of Comendador Gomes, Frutal, Prata and Uberlândia, in the State of Minas Gerais, a CSD associated virus (CSDaV) was often found through nested RT-PCR; in samples from São Paulo, none showed positive for the same primers. With the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphids; Virus detection; Citrus tristeza virus; Citrus sudden death-associated virus.
Ano: 2008
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952008000600007

Population dynamics of Aphis gossypii Glover and in sole and intercropping systems of cotton and cowpea
Provedor de dados: 42
Autores: FERNANDES,FRANCISCO S.; GODOY,WESLEY A.C.; RAMALHO,FRANCISCO S.; GARCIA,ADRIANO G.; SANTOS,BÁRBARA D.B.; MALAQUIAS,JOSÉ B.
ABSTRACT Population dynamics of aphids have been studied in sole and intercropping systems. These studies have required the use of more precise analytical tools in order to better understand patterns in quantitative data. Mathematical models are among the most important tools to explain the dynamics of insect populations. This study investigated the population dynamics of aphids Aphis gossypii and Aphis craccivora over time, using mathematical models composed of a set of differential equations as a helpful analytical tool to understand the population dynamics of aphids in arrangements of cotton and cowpea. The treatments were sole cotton, sole cowpea, and three arrangements of cotton intercropped with cowpea (t1, t2 and t3). The plants were infested with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphids; Cotton; Cowpea; Dynamics; Mathematical models.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100311

The behavior of Aphis gossypii and Aphis craccivora (Hemiptera: Aphididae) and of their predator Cycloneda sanguinea (Coleoptera: Coccinellidae) in cotton-cowpea intercropping systems
Provedor de dados: 42
Autores: FERNANDES,FRANCISCO S.; GODOY,WESLEY A.C.; RAMALHO,FRANCISCO S.; MALAQUIAS,JOSÉ B.; SANTOS,BÁRBARA D.B.
ABSTRACT The intercropping is an important cultural practice commonly used in pest management. It is based on the principle that increased plant diversity in the agro-ecosystem can lead to reductions of pest populations in the crop. The current study aimed to assess the impact the colored fiber cotton-cowpea intercropped systems on Aphis gossypii and Aphis craccivora and on their predator Cycloneda sanguinea and the losses and the dispersion behavior of these aphids and their predator in these cropping systems. The experiment had a randomized block experimental design with two bioassays and four treatments. The number of apterous and alate aphids (A. gossypii) per cotton plant was 1.46 and 1.73 or 1.97 and 2.19 times highest in the solid cotton system than...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphids; Cowpea; Cotton; Behavior; Intercropping.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100373

Functional response of the predator Eriopis connexa (Coleoptera: Coccinellidae) to different prey types
Provedor de dados: 52
Autores: Sarmento,Renato Almeida; Pallini,Angelo; Venzon,Madelaine; Souza,Og Francisco Fonseca de; Molina-Rugama,Adrián José; Oliveira,Claudinei Lima de.
This work evaluated the functional response of adult females of Eriopis connexa to different densities of Macrosiphum euphorbiae and Tetranychus evansi. When preying upon aphids, E. connexa presented a sigmoidal functional response (Type III). This behavior, however, changed drastically to an exponential (Type II) functional response, when mites (T. evansi), rather than aphids, were offered to E. connexa. Such different patterns showed that this coccinellid needed to adopt distinct strategies according to the kind of prey available. Since predators were believed to be able to regulate prey populations only when adopting Type III functional response. E. connexa would be a good candidate for a biological control agent of M. euphorbiae, but would not suppress...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological control; Coccinellids; Aphids; Mites; Lycopersicon esculentum Mill.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000100014

Fat body morphology of Eriopis connexa (coleoptera, coccinelidae) in function of two alimentary sources
Provedor de dados: 52
Autores: Sarmento,Renato de Almeida; Oliveira,Hamilton Gomes de; Holtz,Anderson Mathias; Silva,Solange Marques da; Serrão,José Eduardo; Pallini,Ângelo.
This work investigated the influence of two alimentary sources: aphids and mites, in the morphology of the fat body of E. connexa. Results showed that fat body cells of individuals fed with aphids presented areas more than three folds higher (511 ± 98,7µm²) than those of beetles fed with mites (162 ± 34,9µm²). Histochemical tests showed that nutrient amount stored in fat body was higher in lady-beetles fed on aphids.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alimentary source; Aphids; Eriopis connexa; Fat body; Mites.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000300011

Occurrence and parasitism of aphids (Hemiptera: Aphididae) on cultivars of irrigated oat (Avena spp.) in São Carlos, Brazil
Provedor de dados: 52
Autores: Ronquim,Júlio Cesar; Pacheco,Josué Marques; Ronquim,Carlos Cesar.
The interactions between aphids and their Hymenopteran parasitoids on irrigated oats as well as the response of different cultivars of cereals regarding the resistance to these aphids and the influence on the host/parasitoid relationships were studied during two years in São Carlos, Brazil. Rhopalosiphum padi (L.) was the predominant aphid observed throughout the study, while the other species were rarely found. Five species of parasitic Hymenoptera were found: three primary parasitoids, Lysiphlebus testaceipes (Cresson), Aphidius colemani (Viereck) and Diaeretiella rapae (M'Intosh) and two hyperparasitoids, Syrphophagus aphidivorus (Myer) and Alloxysta brassicae (Ashmead). The UPF 86081 cultivar presented significant results regarding lower Rhopalosiphum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aphids; Biological control; Oats; Parasitoid; Plant resistance.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000200001

Grazing Scar Characteristics Impact Degree of Fungal Facilitation in Spartina alterniflora Leaves in a South American Salt Marsh
Provedor de dados: 52
Autores: Freitas,Ricardo Franco; Schrack,Elizabeth Carol; Sieg,Robert Drew; Silliman,Brian Reed; Costa,César Serra Bonifácio.
Grazing scars of burrowing crabs and Hemiptera insects were simulated on leaves of the salt marsh grass Spartina alterniflora. Simulations of crab feeding generated two-fold higher fungal (ergosterol) content in leaves in comparison to that generated by insect scar simulations (1.26 ±0.55 and 0.57 ±0.25 µg per cm², respectively). This study provided evidence that herbivory could facilitate microbial infection by fungi in dominant South American salt marsh plants and indicated that specific feeding mechanisms used by different herbivores might differentially impact the strength of this interaction.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungi infestation; Phytopathology; Biotic interactions; Aphids; Neohelice granulata.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000100103

Abundance and prevalence of Aphidius avenae (Hymenoptera: Braconidae: Aphidiinae) in Chile
Provedor de dados: 118
Autores: Peñalver-Cruz,Ainara; Ortiz-Martínez,Sebastián; Villegas,Cinthya; Tomanovic,Zeljko; Zepeda-Paulo,Francisca; Zikic,Vladimir; Lavandero,Blas.
Abstract During the samplings described here, Aphidius avenae (=picipes) (Haliday, 1834) was collected. This species has been reported in Chile but has never been studied in terms of its relative abundance and prevalence in central and southern Chile by using classical or molecular methods. The composition of the parasitoid assemblages on several cereal aphid hosts was examined for three seasons in agricultural landscapes. In this note, we describe the prevalence of this parasitoid species in cereal aphids and other aphid hosts and discuss the abundance of this parasitoid compared to other aphid parasitoids and the probable origins of this important aphid parasitoid species in Chile. The results indicate that A. avenae has a low prevalence compared to...
Tipo: Journal article
Palavras-chave: Aphids; Braconidae; Hosts; Parasitoids; Tomato; Wheat.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000200207

Capacity of earwig Marava arachidis (Yersin) to access fennel plants Foeniculum vulgare Mill in laboratory and field
Provedor de dados: 65
Autores: Abramson,Charles Ira; Wanderley,Paulo Alves; Miná,Alexandre José Soares; Wanderley,Maria José Araújo.
This research was aimed at obtaining data about earwig behavior (Marava arachidis Y.) on fennel agro-ecosystems and evaluating its potential capacity to access plants in the absence of aphids under laboratory and field conditions. This study establishes a baseline to evaluate earwigs as biological controls to combat aphids that attack fennel plants. Two experiments were developed. In experiment 1, earwigs were studied under laboratory conditions, in experiment 2 under field conditions. Independent variables were sex, exposure to the essential oil of fennel for 24 or 48 hours, and whether the fennel plant was vegetative or flowering. The results indicated that earwigs will climb a fennel plant in the absence of aphids and that few statistical significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological control; Dermaptera; Aphids; Umbeliferae.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782007000600003