Manejo de pragas exóticas em florestas de eucalipto.

Resumo: As pragas exóticas do eucalipto o psilideo-de-concha Glycaspis brimblecombei (Hemiptera: Psyllidae), o percevejo bronzeado Thaumastocoris peregrinus (Hemiptera: Thaumastocoridae) e a vespa-de-galha Leptocybe invasa (Hymenoptera: Eulophidae), tem comprometido o desenvolvimento de espécies e clones de eucalipto no Brasil, Sistemas de monitoramento, baseado no uso de armadilhas adesivas tem sido utilizados. As principais estratégias de manejo dessas pragas são baseadas em controle biológico clássico, com importação e liberação de inimigos naturais, e avaliação de material genético de eucalipto resistente. Summary: The exotic pests of eucalyptus redgum lerp psyllid Glycaspis brimblecombei (Hemiptera: Psyllidae), the bronze bug Thaumastocoris peregrinus (Hemiptera: Thaumastocoridae) and gall wasp Leptocybe invasiva (Hymenoptera: Eulophidae), has compromised the development of Eucalyptus species and clones in Brazil. Monitoring systems, based on the use of sticky traps have been used. The main management strategies for these pests are based on classical biological control, with import and release of natural enemies, and evaluation of resistant genetic material to the exotic pests

High population levels lead Glycaspis brimblecombei (Hemiptera: Aphalaridae) to unrecorded feeding and oviposition behaviors on Eucalyptus urograndis plants.

The red gum lerp psyllid, Glycaspis brimblecombei Moore, 1964 (Hemiptera: Aphalaridae), an insect pest originating in Australia and which feeds only on Eucalyptus L?Hér. (Myrtales: Myrtaceae) plants, has spread to several countries. The populations of this insect commonly reach high populations on Eucalyptus plants since its entry into Brazil, and also indicated an unrecorded behavioral. The objectives of this study were to describe a peculiar adaptation in the feeding habit of G. brimblecombei and to register the new habit. The oviposition and feeding by G. brimblecombei, commonly, on the leaves of Eucalyptus, started to occur, also, on lignified twigs. This suggests a not yet recorded adaptation of this insect to reduce insect × plant intraspecific competition. O psilídeo de concha, Glycaspis brimblecombei Moore, 1964 (Hemiptera: Aphalaridae), um inseto praga originário da Austrália e que se alimenta apenas de plantas de Eucalyptus L?Hér. (Myrtales: Myrtaceae), se espalhou por vários países. Esse inseto, geralmente, atinge grandes populações em plantas de Eucalyptus desde sua entrada no Brasil e, também, indicou um comportamento diferente. Os objetivos deste estudo foram descrever uma adaptação peculiar no hábito alimentar de G. brimblecombei e registrar o novo hábito. A oviposição e alimentação por G. brimblecombei, geralmente, nas folhas de Eucalyptus, passaram a ocorrer, também, em ramos lignificados. Isso sugere uma adaptação diferente desse inseto para reduzir a competição intraespecífica inseto × planta

Susceptibility of Thaumastocoris peregrinus (Hemiptera: Thaumastocoridae), a Eucalyptus pest, to entomopathogenic fungi

Thaumastocoris peregrinus Carpintero and Dellape (Hemiptera: Thaumastocoridae) is a sap-sucking insect that has become a major pest of eucalypts. The entomopathogenic fungi Beauveria bassiana (Bals.-Criv.) Vuill. and Metarhizium anisopliae (Metsch.) Sorokin have the potential to control insect pests. This study evaluated the susceptibility of T. peregrinus to two commercial products based on conidia of B. bassiana and M. anisopliae. The fungi were sprayed onto adults of T. peregrinus at a concentration of 1 × 108 conidia mL−1 to evaluate their pathogenicity and conidial production on the insect cadavers. Beauveria bassiana caused 100 % mortality, while M. anisopliae caused more than 80 % mortality of T. peregrinus adults 11 days after fungi application. The fungi colonized the head and thorax regions and caused high mortality rates through conidial production. Pathogenicity of entomopathogenic fungi B. bassiana and M. anisopliae to T. peregrinus show potential to use these fungi in integrated pest management. Keywords: Beauveria bassiana, Metarhizium anisopliae, biological control, bronze bugMade available in DSpace on 2019-06-08T00:32:48Z (GMT). No. of bitstreams: 1 2019LeonardoSASusceptibility.pdf: 480642 bytes, checksum: 75a2c35e5f57ab4d36de60170700f5ca (MD5) Previous issue date: 2019bitstream/item/198279/1/2019-Leonardo-SA-Susceptibility.pd