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Registros recuperados: 5
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Effect of Biofertilizers and Neem Oil on the Entomopathogenic Fungi Beauveria bassiana (Bals.) Vuill. and Metarhizium anisopliae (Metsch.) Sorok BABT
Hirose,Edson; Neves,Pedro M. O. J.; Zequi,João A. C.; Martins,Luís H.; Peralta,Cristiane H.; Moino Jr.,Alcides.
The in vitro fungitoxic effect of three biofertilizers, E.M.-4, Multibion <FONT FACE=Symbol>Ô</FONT> and Supermagro used in organic agriculture and the neem oil (Azadirachta indica A. Juss) on the entomopathogenic fungi Metarhizium anisopliae and Beauveria bassiana was studied. These products were mixed in a medium where the two fungi were inoculated, and germination, vegetative growth and conidiogenesis were assessed. The biofertilizers Supermagro and E.M.- 4 showed to be less toxic for the two fungi whereas Multibion<FONT FACE=Symbol>Ô</FONT> caused major inhibition on M. anisopliae, with reductions in germination (-37.74%), colony diameter (-30.26%) and conidiogenesis (-42.62%). Neem oil promoted a larger negative effect on B....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Organic Agriculture; Entomopathogenic Fungi; Toxic Effect.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000400013
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Effect of relative humidity on emergence and on dispersal and regrouping of first instar Nezara viridula (L.) (Hemiptera: Pentatomidae) Neotropical Entomology
Hirose,Edson; Panizzi,Antônio R.; Cattelan,Alexandre J..
Laboratory studies with 1st instar of southern green stink bug, Nezara viridula (L.) indicated that relative humidity (RH) greatly affected nymph emergence and survivorship up to the 2nd instar, reaching the maximum value (<FONT FACE=Symbol>»</FONT> 90%) with RH of > 80%. At 60% RH, 60% of the nymphs emerged and survived, while with 0% RH only <FONT FACE=Symbol>»</FONT> 15% of eggs hatched, and most nymphs died. Emerged nymphs from egg masses placed in plastic boxes with a gradient of humidity remained on egg shells for ca. one day. After this period, they dispersed and regrouped on top of shells 6.8 ± 0.67 times, until they abandoned the shells toward the source of humidity, avoiding the water-saturated areas. Duration taken for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Heteroptera; Stink bug; Behavior; Aggregation; Microclimate.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2006000600006
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Genetic differentiation among Brazilian populations of Euschistus heros (Fabricius) (Heteroptera: Pentatomidae) based on RAPD analysis Neotropical Entomology
Sosa-Gomez,Daniel R.; Delpin,Katiaíres E.; Almeida,Alvaro M.R.; Hirose,Edson.
The Neotropical Brown Stink Bug (NBSB), Euschistus heros (Fabricius), has a wide distribution in Brazilian soybean fields, being more important in the central region of the country. The species is the main target of insecticide applications for stink bug pest control. We determined the variability among and within populations of the NBSB by random amplification of polymorphic DNA (RAPD) analysis. Samples of NBSB were collected in soybean fields from Ubiratã (PR), Londrina (PR), Centenário do Sul (PR), Cândido Mota (SP), Ponta Porã (MS) and Sapezal (MT). Genomic DNA was extracted from the head to minimize DNA contamination by endoparasites. DNA was amplified with 10 mer primers. Fifteen primers produced 246 bands. The genetic similarity matrix was obtained,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: RAPD; Molecular marker; Genetic structure; Gene flow.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000200009
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Potential use of antibiotic to improve performance of laboratory-reared Nezara viridula (L.) (Heteroptera: Pentatomidae) Neotropical Entomology
Hirose,Edson; Panizzi,Antônio R.; Cattelan,Alexandre J..
The antibiotic streptomycin added to the drinking water at a concentration of 125 mg/l during nymphal development of Nezara viridula (L.) (Heteroptera: Pentatomidae)accelerated the development in ca. 2 days, increased survivorship, and doubled adult longevity; nymph survivorship and adult body weight were not affected when compared to control insects. Streptomycin has potential in rearing N. viridula, especially in improving quality of field-collected adults, by mitigating the introduction of pathogenic bacteria, and improving the quality of the population.
Tipo: Info:eu-repo/semantics/report Palavras-chave: Stink bug; Rearing; Antimicrobial.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2006000200022
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Seleção de isolados de Beauveria bassiana para o controle biológico da broca-do-café, Hypothenemus hampei (Ferrari) (Coleoptera: Scolytidae) Neotropical Entomology
Neves,Pedro M.O.J.; Hirose,Edson.
A broca-do-café, Hypothenemus hampei (Ferrari), é uma das mais importantes pragas do cafeeiro. Seu controle é realizado, na maioria das vezes, utilizando-se produtos químicos sintéticos que contaminam o meio ambiente, os alimentos e os agricultores. O fungo Beauveria bassiana é um agente natural de controle dessa praga e apresenta potencial para o controle biológico. Assim, com o objetivo de selecionar isolados de B. bassiana para o controle da broca-do-café avaliou-se a virulência de 61 isolados, originários de diversos hospedeiros e regiões geográficas. A seleção foi realizada em duas fases: na primeira fase selecionaram-se 11 isolados com mortalidade confirmada acima de 60%. Na segunda fase determinou-se para os 11 isolados pré-selecionados, a CL50,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cafeeiro; Fungo entomopatogênico; MIP.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000100011
Registros recuperados: 5
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