Fecha/hora: 11/06/2024 23:14:19

Biblioteca(s): | INIA Las Brujas; INIA Tacuarembó.
Fecha corriente: | 13/05/2019
Fecha de la última actualización: | 20/09/2019
Autoria: | CORALLO, B.; SIMETO, S.; MARTÍNEZ, G.; GÓMEZ, D.; ABREO, E.; ALTIER, N.; LUPO, S.
Afiliación: | BELÉN CORALLO, Laboratorio de Micología, Facultad de Ciencias?Universiada de la República, Montevideo, Uruguay.; SOFIA SIMETO FERRARI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GONZALO ANIBAL MARTINEZ CROSA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DEMIAN FERNANDO GOMEZ DAMIANO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; EDUARDO RAUL ABREO GIMENEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; NORA ADRIANA ALTIER MANZINI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SANDRA LUPO, Laboratorio de Micología, Facultad de Ciencias?Universiada de la República, Montevideo, Uruguay.
Título: | Entomopathogenic fungi naturally infecting the eucalypt bronze bug, Thaumastocoris peregrinus (Heteroptera: Thaumastocoridae), in Uruguay.
Año de publicación: | 2019
Fuente/Imprenta: | Journal of Applied Entomology, 2019, p.1-14.
ISSN: | 0931-2048
DOI: | 10.1111/jen.12624
Idioma: | Inglés

Notas:

Article history: Received: 7 November 2018 / Revised: 8 February 2019 / Accepted: 10 February 2019.
Funding information: Comisión Académica de Posgrado, Beauveria pseudobassiana; INIA, Grant/Award Number: FO_18

Contenido:

ABSTRACT.
Thaumastocoris peregrinus Carpintero & Dellapé (Heteroptera: Thaumastocoridae) is a sap-sucking insect that feeds on leaves of Eucalyptus. In Uruguay, it was detected in 2008 causing significant economic losses in Eucalyptus plantations. At present, there is no efficient control for this pest; thus, the use of biological control agents seems to be an environmentally friendly alternative to reduce the damage caused by this insect. The aims of this study were to isolate and identify the species of entomopathogenic fungi that naturally infect T. peregrinus in Uruguay and to characterize and select the most virulent isolates towards this pest. Individuals of T. peregrinus were collected in eight Eucalyptus plantations infested by the pest. The entomopathogenic fungi were isolated and identified by observation of their micromorphological characteristics, and their identity was confirmed by molecular methods. The pathogenicity and virulence against T. peregrinus of the isolated entomopathogenic fungi were evaluated. Isolates causing the highest insect mortality were selected to evaluate the effect of temperature and water activity on conidial viability. Entomopathogenic fungi were found in very low number with the prevalence of less than 3%. Isolates corresponded to Beauveria, Fusarium, Isaria, Lecanicillium, Paecilomyces, Pochonia, Purpureocillium and Simplicillium genera. Two species, B. pseudobassiana and L. muscarium, were first recorded in Uruguay. Among all the tested species, an isolate of B. bassiana (FI 2403) showed the highest virulence followed by an isolate of B. pseudobassiana. The isolate of B. bassiana presented the highest percentage of spore germination at the three temperatures and the highest viability at low water activities. Isolate FI 2403 was selected as a promissory candidate for the development of a commercial formulation against T. peregrinus. 
© 2019 Blackwell Verlag GmbH

Palabras-Clave: | Beauveria bassiana; Biocontrol agent; Diseases; EUCALYPTUS; Sap-sucking insects.
Thesagro: | EUCALYPTUS; HONGOS ENTOMOPATOGENOS.
Categoría del tema: | K01 Ciencias forestales - Aspectos generales
Registro original: | INIA Las Brujas (LB)

Ejemplares:

LB - (101824-1) - PXI - AP - DD - PP/JR.APPLIED ENTOMOLOGY/2019 -  -  - DIS
TBO - (103036-1) - PXI - AP - DD - PP/JR.APPLIED ENTOMOLOGY/2019 -  -  - DIS