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Occurrence of Platypus mutatus Chapuis (Coleoptera: Platypodidae) in a brazilwood experimental plantation in Southeastern Brazil Neotropical Entomology
Girardi,Graziele S.; Giménez,Rosana A.; Braga,Márcia R..
The hardwood of Caesalpinia echinata Lam. (brazilwood, Pernambuco, ibirapitanga) is currently the most profitable material used for violin bow due to the unique vibrational properties and dimensional stability. Although this species is resistant to the wood decay caused by termites and rot fungi, an experimental plantation in Southeastern Brazil has been attacked by the ambrosia beetle Platypus mutatus Chapuis (= Megaplatypus mutatus and P. sulcatus). This species invaded ca. 3% of the individuals, mainly in the central part of the plantation. Infestation by larvae and adults was higher during the dry season (winter) when compared to the rainy period (spring and summer).
Tipo: Info:eu-repo/semantics/report Palavras-chave: Insecta; Caesalpinia echinata; Pest; Ambrosia beetle.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2006000600023
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Woronin bodies in Penicillium janczewskii Zaleski BJM
Pessoni,Rosemeire A.B.; Freshour,Glenn; Figueiredo-Ribeiro,Rita de Cássia L.; Hahn,Michael G.; Braga,Márcia R..
Penicillium janczewskii Zaleski is an efficient microorganism for the production of extracellular inulinases and grows rapidly on medium containing sucrose or inulin as carbon source. Maintenance of this filamentous fungus on inulin medium induces secretion of large amounts of inulinases, but the resulting mycelium has thinner cell walls that easily collapse and break. Woronin bodies in hyphae of P. janczewskii grown on sucrose and inulin substrates were observed. No significant differences in the number, location, size and shape of Woronin bodies and level of plugging were observed in cultures of the fungus grown on the two carbon sources. The data indicate that the presence of Woronin bodies in P. janczewskii could not be associated with more easily...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Woronin bodies; Penicilliun; Inulin; Sucrose.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000200005
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