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Registros recuperados: 7
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A review of the introduced forest pests in Brazil PAB
Schühli,Guilherme Schnell e; Penteado,Susete Chiarello; Barbosa,Leonardo Rodrigues; Reis Filho,Wilson; Iede,Edson Tadeu.
Abstract: Special attention should be given to forest plantings in order to minimize the probability of exotic pest introduction and, consequently, of production losses. The objective of this review was to present, under a historic perspective, the main exotic insects that harm the Brazilian forest sector. Therefore, to better describe the phytosanitary context of introduced forest pests in Brazil, the main information regarding these insects was gathered here. Introduced species and species with a risk of introduction were listed. The following species were registered: 12 exotic introduced species related to eucalyptus, non-quarantine; 9 species related to pine, one quarantine; and 1 species related to teak, quarantine. Overall, the core problems for 57...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Exotic pest; Forest pest; Forest sector; Invasive species; Pest resistance; Quarantine..
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000500397
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Age and density of eggs of Helicoverpa armigera influence on Trichogramma pretiosum parasitism Biological Sciences
Zuim, Vitor; Rodrigues, Hígor de Souza; Pratissoli, Dirceu; Torres, Jorge Braz; Fragoso, Débora Ferreira Melo; Bueno, Regiane Cristina Oliveira de Freitas.
This study evaluated the parasitism of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) on eggs of Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) at different ages and densities. The rates of parasitism and emergence, the number of parasitoids emerged per egg and sex ratio of offspring were evaluated in both experiments. Eggs of H. armigera up to 36 hours provided greater parasitism and emergence of adults compared to eggs up to 60 hours old. The number of parasitoids, which emerged per host egg, was greater than one and the sex ratio remained around 80% of females, regardless of the egg development stage. Females of T. pretiosum responded with superior rates of parasitism, emergence and number of parasitoids per egg at the densities of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agronomia; Fitossanidade; Parasitologia Agrícola Biological control; Exotic pest; Egg parasitoid; Host-parasitoid interaction; Noctuidae.
Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34943
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Detection of pine woodwasp in Pinus taeda in São Paulo State, Brazil Ciência Rural
Wilcken,Carlos Frederico; Souza,Amanda Rodrigues de; Puretz,Barbara de Oliveira; Camargo,Gabriella Ferreira de.
ABSTRACT: The woodwasp Sirex noctilio (Fabricius) (Hymenoptera: Siricidae) is one of the main pests of Pinus plantations in South America. The aim of this study is to report the occurrence of S. noctilio in Pinus taeda in Botucatu, São Paulo, Brazil. The surveys were carried out in the arboretum of Faculdade de Ciências Agronômicas (FCA) da Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), campus Botucatu, SP where six species of Pinus are distributed in blocks of 100 trees. Resin beads were observed on the trunks and stems of Pinus species. In post-flight evaluation it was reported that 8.77% of P. taeda trees showed symptoms of oviposition by S. noctilio. A female S. noctilio was found performing oviposition. Sirex noctilio is present in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sirex noctilio; Exotic pest; Forest pest; Occurrence; Pine.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000200151
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Feeding and oviposition preferences of Ctenarytaina spatulata Taylor (Hemiptera, Psyllidae) for Eucalyptus spp. and other Myrtaceae in Brazil Rev. Bras. entomol.
Queiroz,Dalva Luiz de; Zanol,Keti M. R.; Oliveira,Edílson B.; Anjos,Norivaldo dos; Majer,Jonathan.
Feeding and oviposition preferences of Ctenarytaina spatulata Taylor (Hemiptera, Psyllidae) for Eucalyptus spp. and other Myrtaceae in Brazil. The Australian psyllid, Ctenarytaina spatulata Taylor (Hemiptera, Psyllidae), was first detected in Brazil in 1994, where it was found on drought-affected shoots of Eucalyptus grandis in a plantation located in the northern part of Paraná State. The oviposition and feeding preferences of this psyllid were examined on 19 Eucalyptus species, one Eucalyptus hybrid (Cambiju), three Corymbia species and four native Myrtaceae species (Hexaclames edulis, Marlieria edulis, Plinia trunciflora, and Psydium sp.) under greenhouse conditions. The largest populations of C. spatulata were found on E. robusta and E. pellita, while...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Exotic pest; Forest pest; Psyllid.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000100023
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Interception of Wheat mosaic virus (WMoV) in Brazil in maize seeds from the United States PAB
Botelho,Stephanie Regina Alves; Duarte,Macária Ferreira; Barbosa,Andreza Viveiros; Lau,Douglas; Sanches,Márcio Martinello; Fernandes,Fernanda Rausch.
Abstract: The objective of this work was to evaluate the phytosanitary aspect of two accessions of maize (Zea mays) seeds from the United States introduced to Brazil, regarding the presence of Wheat mosaic virus (WMoV). Two to three weeks after sowing, symptomatic leaves were tested by Elisa using specific antiserum to WMoV. The reaction was positive, and leaf samples were analyzed by real-time PCR and amplified PCR products were sequenced. The WMoV isolates had 99 to 100% nucleotide identity with isolates from Australia and the United States. Until now, there is no report of the presence of this virus in Brazil. According to the federal law on plant protection, the plants were burned to avoid the introduction of this exotic pest in the country. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays; Exotic pest; High plains virus; Plant quarantine; Phytosanitary analysis..
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000500688
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Intra-Industry Trade, Multilateral Trade Integration, and Invasive Species Risk AgEcon
Tu, Anh Thuy; Beghin, John C..
We analyze the linkage between protectionism and invasive species (IS) hazard in the context of two-way trade and multilateral trade integration, two major features of real-world agricultural trade. Multilateral integration includes the joint reduction of tariffs and trade costs among trading partners. Multilateral trade integration is more likely to increase damages from IS than predicted by unilateral trade opening under the classic Heckscher-Ohlin-Samuelson (HOS) framework because domestic production (the base susceptible to damages) is likely to increase with expanding export markets. A country integrating its trade with a partner characterized by relatively higher tariff and trade costs is also more likely to experience increased IS damages via...
Tipo: Working or Discussion Paper Palavras-chave: Exotic pest; Intra-industry trade; Invasive species; Liberalization; Trade cost; Trade integration; Trade protection; Two-way trade; Environmental Economics and Policy; International Relations/Trade.
Ano: 2006 URL: http://purl.umn.edu/18505
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Tariff Escalation and Invasive Species Risk AgEcon
Tu, Anh Thuy; Beghin, John C.; Gozlan, Estelle.
We investigate the interface between trade and invasive species (IS) risk, focusing on the existing tariff escalation in agro-forestry product markets and its implication for IS risk. Tariff escalation in processed agro-forestry products exacerbates the risk of IS by biasing trade flows toward increased trade of primary commodity flows and against processed-product trade. We show that reducing tariff escalation by lowering the tariff on processed goods increases allocative efficiency and reduces the IS externality, a win-win situation. We also identify policy menus for trade reforms involving tariffs on both raw input and processed goods, leading to win-win situations.
Tipo: Working or Discussion Paper Palavras-chave: Agro-forestry products; Exotic pest; International trade; Invasive species; Tariff escalation; Trade flows; Resource /Energy Economics and Policy.
Ano: 2005 URL: http://purl.umn.edu/18377
Registros recuperados: 7
Primeira ... 1 ... Última
 

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