|
|
|
|
|
| Pinto,Laura M.N.; Dörr,Natália C.; Ribeiro,Ana Paula A.; Salles,Silvia M. de; Oliveira,Jaime V. de; Menezes,Valmir G.; Fiuza,Lidia M.. |
| The screening of Bacillus thuringiensis (Bt) Cry proteins with high potential to control insect pests has been the goal of numerous research groups. In this study, we evaluated six monogenic Bt strains (Bt dendrolimus HD-37, Bt kurstaki HD-1, Bt kurstaki HD-73, Bt thuringiensis 4412, Bt kurstaki NRD-12 and Bt entomocidus 60.5, which codify the cry1Aa, cry1Ab, cry1Ac, cry1Ba, cry1C, cry2A genes respectively) as potential insecticides for the most important insect pests of irrigated rice: Spodoptera frugiperda, Diatraea saccharalis, Oryzophagus oryzae, Oebalus poecilus and Tibraca limbativentris. We also analyzed their compatibility with chemical insecticides (thiamethoxam, labdacyhalothrin, malathion and fipronil), which are extensively used in rice crops.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacillus thuringiensis; Cry proteins; Insects. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000200025 |
| |
|
|
| Dequech,Sônia T.B.; Silva,Rogério F.P. da; Fiuza,Lidia M.. |
| Lagartas de Spodoptera frugiperda (J.E. Smith) sadias, parasitadas por Campoletis flavicincta (Ashmead), infectadas por Bacillus thuringiensis aizawai e parasitadas e infectadas foram obtidas em laboratório e alimentadas com folhas de milho. Lagartas parasitadas e infectadas apresentaram menor consumo foliar (em média, 2,3 cm²) que as demais, apesar de o mesmo não ter diferido do consumo de lagartas apenas parasitadas. A mortalidade média das lagartas parasitadas e infectadas foi superior (96,5%) tanto à das parasitadas (78,4%) quanto à das infectadas (44,3%). Lagartas infectadas tiveram o período de alimentação (em média, 29,6 dias) similar ao das sadias, apesar de terem período larval mais longo. Indivíduos descendentes de casais de parasitóides, que... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lagarta-do-cartucho-do-milho; Controle biológico; Controle microbiano; Inimigo natural. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000600010 |
| |
|
|
| Castilhos-Fortes,Raquel de; Matsumura,Aida T.S.; Diehl,Elena; Fiuza,Lidia M.. |
| The effects of Bacillus thuringiensis (Bt) Berliner on the termite Nasutitermes ehrhardti (Isoptera, Termitidae) were evaluated under laboratory conditions. From 55 Bt subspecies assayed in vivo under controlled conditions seven were found to be pathogenic in the subspecies yunnanensis, huazhongiensis, brasiliensis, colmeri and kurstaki (less than 72% of mortality), particularly sooncheon and roskildiensis (100% mortality at the seventh day after the bacteria application). The LC50 for subspecie sooncheon corresponded to 47x10(8),()66.2x10(6) and 5.1x10(5) cells/ml, at the third, fifth and seventh day, respectively. For the subspecie roskildiensis the LC50 corresponded to 30.8x10(5), 48.4x10(6) and 16.8x10(4) cells/ml, at the third, fifth and seventh day,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacillus thuringiensis; Biological control; Entomopathogenic bacteria; Nasutitermes ehrhardti; Termite. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000300006 |
| |
|
|
|
