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| Registros recuperados: 27 | |
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| LINS, E. A.; RODRIGUEZ, J. P. M.; SCOLOSKI, S. I.; PIVATO, J.; LIMA, M. B.; FERNANDES, J. M. C.; PEREIRA, P. R. V. da S.; LAU, D.; RIEDER, R.. |
| Aphids are insects that attack crops and cause damage directly, by consuming the sap of plants, and indirectly,by vectoring microorganisms that can cause diseases. Cereal crops are hosts for many aphid species, includingRhopalosiphumpadi(an economically important aphid species). Recording and classifying aphids are necessaryfor evaluating and predicting crop damage. Thus, serving as a basis for decision making on the utilization ofcontrolmeasures.Itcanalsobeusefultoevaluateplantresistancetoaphids.Traditionally,therecordingprocessis manual and depends on magnification and well-trained staff. The manual counting is also a time-consumingprocess and susceptible to errors. With this in mind, this paper presents a method and software to automate thecounting and... |
| Tipo: Artigo de periódico |
Palavras-chave: Aphids; Counting; Classification; Computer vision; Measurement. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1119503 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| CASTRO-GUEDES, C. F. de; ALMEIDA, L. M. de; PENTEADO, S. do R. C.; MOURA, M. O.. |
| 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: Aphi-didae), Brevicoryne brassicae (Linnaeus, 1758) (Hemiptera: Aphididae), and frozen eggs of Anagastakuehniella (Zeller, 1879) (Lepidoptera: Pyralidae), were evaluated. With all three diets, birth rate washigher than mortality, resulting in positive rmvalues and thus indicating population growth. Under theconditions 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 ofsome species of Coccinellidae, but not with the... |
| Tipo: Artigo de periódico |
Palavras-chave: Aphids; Development time; Harlequin ladybird; Life table.; Joaninha; Praga de planta; Harmonia axyridis; Insecta; Aphidoidea.. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1074040 |
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| 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 |
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| 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 |
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| 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 |
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| CESARO JÚNIOR, T. de; RIEDER, R.; DI DOMÊNICO, J. R.; LAU, D.. |
| Advances in artificial intelligence, computer vision, and high-performance computing have enabled the creation of efficient solutions to monitor pests and identify plant diseases. In this context, we present InsectCV, a system for automatic insect detection in the lab from scanned trap images. This study considered the use of Moericke-type traps to capture insects in outdoor environments. Each sample can contain hundreds of insects of interest, such as aphids, parasitoids, thrips, and flies. The presence of debris, superimposed objects, and insects in varied poses is also common. To develop this solution, we used a set of 209 grayscale images containing 17,908 labeled insects. We applied the Mask R-CNN method to generate the model and created three web... |
| Tipo: Artigo de periódico |
Palavras-chave: Convolutional neural network; Mask r-cnn; Object detection; Pest detection; Aphids; Warning systems. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1137367 |
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| Registros recuperados: 27 | |
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