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| Registros recuperados: 585 | |
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| Prezoto,Fábio; Lima,Maria A.P.; Machado,Vera L.L.. |
| The social wasps are predators of several species of insects and the study of their preys can reveal their potential for programs of biological pest control. During the period of September 2000 to January 2002, were accomplished 70h of collections of the preys captured in twelve nests of Polybia platycephala Richards, placed in urban areas of Juiz de Fora municipality, Minas Gerais State, Brazil. The preys captured by P. platycephala include five orders of insects: Diptera (33.4%), Lepidoptera (28.6%), Hemiptera (12.0%), Hymenoptera (9.4%) e Coleoptera (7.2%). The mean weight of protein charge carried by the wasps was 1.9 ±1.6mg (n = 34, 0.3 - 6.2 mg), and the mean of protein transported per day was 22.8 mg. According to the results, we could estimate that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Social wasp; Foraging activity; Prey; Biological control. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000500019 |
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| Kurylo,Cris L; Garcia,Mauro S; Costa,Valmir A; Tibola,Cristiane; Ramiro,Glodoaldo A; Finkenauer,Elder. |
| Eucalyptus are hosts of several psyllid species. Among them, Ctenarytaina eucalypti (Maskell) is considered the most harmful to Eucalyptus globulus plantations. In Brazil, this pest has been observed in the state of Parana, and in 2005, it was found causing damage to plantations of E. globulus in Arroio Grande and Piratini cities, RS. The monophagous endoparasitoid Psyllaephagus pilosus Noyes was also observed parasitizing nymphs of C. eucalypti. This parasitoid has been shown to be highly efficient in controlling this psyllid species, making unnecessary the use of any other control method. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Blue gum psyllid; Biological control. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000400031 |
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| Hohmann,Celso L.; Lovato,Lidiana. |
| The study reports a field survey to determine the presence of parasitism on the leaf defoliator Hypocala andremona (Stoll) (Lepidoptera: Noctuidae) eggs, on parsimmon trees by Trichogrammatids. H. andremona eggs were sampled weekly on two branches/10 trees/orchard during the 2000/01 and 2001/02 crop seasons in Londrina, and during 2000/01crop season in Arapongas, PR, Brazil. In laboratory the eggs were isolated in gelatin capsules and maintained under controlled conditions (26 ± 1ºC, 60 ± 10% RH, 14L:10D). Three parasitoid species were identified: Trichogrammatoidea annulata De Santis, Trichogramma pretiosum Riley and Trichogramma bruni Nagaraja. In Arapongas only T. pretiosum was collected. Natural control levels in general were low, but parasitization... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leaf defoliator; Trichogrammatoidea annulata; Trichogramma pretiosum; Trichogramma bruni; Biological control. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000200024 |
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| Lecuona,Roberto; Crespo,Diana; La Rossa,Francisco. |
| The parasitoid Spalangia endius Walker is an efficient controller of Dipteran pupae, such as Musca domestica L. The entomopathogenic fungus Beauveria bassiana (Bals.) Vuil. is a regulator of insect populations, including these synanthropic pests. The aim of this work was to explore the possibilities of utilizing both agents in a combined form for the biocontrol of the domestic fly. Recently formed M. domestica pupae were inoculated by immersion in conidia suspension (10(8) conidia/ml) with two strains of B. bassiana (Bb6 and Bb10). The inoculated pupae were offered to the female parasitoid. In one bioassay they were offered pupae inoculated a single day and in other, pupae inoculated the following day as well. In both bioassays non inoculated (control)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Entomopathogenic fungus; Biological control. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000400010 |
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| Mochi,Dinalva A.; Monteiro,Antonio C.; De Bortoli,Sergio A.; Dória,Háyda O.S.; Barbosa,José C.. |
| This research intended to investigate if the presence of pesticides in the soil could affect the pathogenicity of Metarhizium anisopliae Metsch. (Sorokin) for Ceratitis capitata (Wied.) and assess the effect of conidia application as suspension or dry conidia. The fungicides chlorothalonyl and tebuconazol, the acaricide abamectin, the insecticide trichlorfon, and the herbicide ametrin were applied at the manufacturer-recommended doses. Soil samples were placed in glass flasks and were given the fungus as conidial suspension or dry. After pesticide application, 20 3rd-instar larvae were placed in the soil. The flasks were sealed with voile fabric and incubated at 27 ± 0.5ºC for nine days, until adult emergence; incubation continued for four more days at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Microbial control; Entomopathogenic fungus; Fruit fly. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2006000300014 |
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| Gonçalves,José R.; Faroni,Lêda R.D'A.; Guedes,Raul N.C.; Oliveira,Carlos R.F. de. |
| The presence of natural enemies in stored grains and the need of pest control alternatives led to the assessment of the effect of insecticides on the mite species Acarophenax lacunatus (Cross & Krantz), an egg parasite of the stored grain pest Rhyzopertha dominica (Fabr.). The insecticides bifenthrin, deltamethrin, pirimiphos-methyl and fenitrothion were tested at 0.4, 0.5, 0.8 and 10 ppm, respectively. Insecticide treated wheat grains were spread in petri dishes and infested with 25 adults of R. dominica. Seven days later, three mites were added to each dish, in four replicates. The number of adults of R. dominica, grain weight loss and instantaneous rate of increase (r i) of A. lacunatus were lower when the grain was treated with deltamethrin.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stored grain pest; Mite; Pyrethroid; Organophosphate; Biological control. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000200016 |
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| Carvalho,Romulo da S.. |
| Diapause has been poorly investigated in tephritid fruit flies and in associated parasitoids in tropical regions. In this work, diapause in larval-pupal parasitoids of fruit flies is reported for the region of the Reconcavo Baiano, Brazil. Diapause was recorded for individuals of four native species [Doryctobracon areolatus (Szépligeti), Utetes anastrephae (Viereck), Opius sp. (Hymenoptera: Braconidae), Aganaspis pelleranoi (Brethes) (Hymenoptera: Figitidae)] and of one exotic braconid [Diachasmimorpha longicaudata Ashmead]. Diapausing parasitoids were obtained from fruit fly puparia in fruits collected between November 1998 and April 2000. In all, 1.4% of individuals underwent diapause, being D. areolatus the most frequent. The development time for this... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Tephritidae; Braconidae; Figitidae; Dormancy. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000400012 |
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| Slininger,Patricia J.; Behle,Robert W.; Jackson,Mark A.; Schisler,David A.. |
| Thousands of potential microbial biocontrol agents have been isolated from agricultural fields and crops during research over the last 80 years, yet only a few are in commercial use. Recently, public health and safety concerns about the environmental impact of chemical pesticides have led to consideration of biological control as a natural approach to maintaining crop health. Despite environmental incentives and strong research efforts, commercialization of biocontrol agents has been slow to evolve. The momentum of the chemical industry is difficult to shift, and fermentation processes tend to be more expensive to operate than synthetic chemical processes.Yet there is a demand for biological control products, especially in agricultural niche markets, where... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biopesticide; Biological control; Fermentation; Formulation; Stabilization. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000200001 |
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| Costa,Juliana R V da; Rossi,Juliana R; Marucci,Suzana C; Alves,Eliane C da C; Volpe,Haroldo X L; Ferraudo,Antonio S; Lemos,Manoel V F; Desidério,Janete A. |
| Aedes aegypti (L.), the main vector of dengue fever in Brazil, has been controlled with the use of massive chemical products, contributing to the development of resistance and decreasing the insect control efficiency. The control of dipterans with bioinsecticides based on Bacillus thuringiensis has been satisfactory, due to the production of insecticidal proteins denominated Cry (crystal), Cyt (cytolytic) toxins and Chi (chitinase), and to the synergistic effects among them. The present work aimed to select B. thuringiensis isolates efficient against A. aegypti larvae. A bacterial collection containing 1,073 isolates of B. thuringiensis, obtained from different locations of Brazilian territory, had the DNA isolated and submitted to PCR amplifications using... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Cry; Cyt; Chitinase; Dengue fever. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000500015 |
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| Collier,Karin F.S.; Lima,Jose O.G. de; Albuquerque,Gilberto S.. |
| This study was conducted to search for potential mite predators to control phytophagous mites in papaya orchards. Bimonthly surveys, from January 1999 to February 2000, were carried out in two orchards, one in Silva Jardim (RJ), where pests are naturally controlled, and one at Linhares (ES), where pests are chemically controlled. All mite species collected from buds, new leaves, old leaves, and floral buttons of papaya trees and from weed leaves were quantified and identified to at least family level. Despite the relatively diverse mite fauna, we found representatives of only one family of predacious mites, i.e. Phytoseiidae. Among these, Neoseiulus idaeus Denmark & Muma was the most abundant and frequent during all seasons in the Linhares orchard,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acari; Phytoseiidae; Neoseiulus idaeus; Biological control. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000600020 |
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| Registros recuperados: 585 | |
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