Efficacy of entomopathogenic fungi against Rhyzopertha dominica (Fabricius) (Coleoptera: Bostrichidae) under laboratory conditions

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Rhyzopertha dominica (Fabricius) (Coleoptera: Bostrichidae) is a primary insect pest of stored grains. The aim of this study was to evaluate the efficacy of 10 different isolates of entomopathogenic fungi as biocontrol agents against R. dominica. The chosen isolates were Beauveria bassiana CEP 545,...

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Autores principales: Musso, Anahí, Marcondes Almeida, José Eduardo, Padín, Susana Beatriz, Ordoqui, Eliana, López Lastra, Claudia Cristina
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Ciencias Agrarias
Biological control
Beauveria bassiana
Stored grains
Rhyzopertha dominica
Alternative control
Control biológico
Granos almacenados
Control alternativo
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/119359
https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/2829
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-119359
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
Biological control
Beauveria bassiana
Stored grains
Rhyzopertha dominica
Alternative control
Control biológico
Granos almacenados
Control alternativo
spellingShingle Ciencias Agrarias
Biological control
Beauveria bassiana
Stored grains
Rhyzopertha dominica
Alternative control
Control biológico
Granos almacenados
Control alternativo
Musso, Anahí
Marcondes Almeida, José Eduardo
Padín, Susana Beatriz
Ordoqui, Eliana
López Lastra, Claudia Cristina
Efficacy of entomopathogenic fungi against Rhyzopertha dominica (Fabricius) (Coleoptera: Bostrichidae) under laboratory conditions
topic_facet Ciencias Agrarias
Biological control
Beauveria bassiana
Stored grains
Rhyzopertha dominica
Alternative control
Control biológico
Granos almacenados
Control alternativo
description Rhyzopertha dominica (Fabricius) (Coleoptera: Bostrichidae) is a primary insect pest of stored grains. The aim of this study was to evaluate the efficacy of 10 different isolates of entomopathogenic fungi as biocontrol agents against R. dominica. The chosen isolates were Beauveria bassiana CEP 545, CEP 560 and CEP 567, Metarhizium robertsii CEP 381 and CEP 401, M. anisopliae sensu lato CEP 615, CEP 616 and CEP 617 and Cordyceps (=Isaria) fumosorosea CEP 303 and CEP 309. Insects were sprayed with a conidial suspension of each fungus and incubated for 15 days under laboratory conditions. Insect mortality (expressed as percentage) and median survival times (MST) were estimated. Beauveria bassiana caused the highest mortality (47-65%), whereas the other fungal isolates caused a maximum mortality of 21%. The B. bassiana CEP 545 and CEP 567 isolates led to an MST of 8 and 9 days, respectively. Among all the isolates tested, B. bassiana CEP 545 was the most efficient as a biocontrol agent. The median lethal concentration (LC50) of this isolate was calculated with five concentrations on day 15 after the treatment. The insect mortality increased with the highest isolate concentrations and the LC50 was estimated in 9.54x109 conidia mL-1. This study confirmed that some B. bassiana isolates, especially CEP 545, could be used as biocontrol agents against R. dominica.
format Articulo
Articulo
author Musso, Anahí
Marcondes Almeida, José Eduardo
Padín, Susana Beatriz
Ordoqui, Eliana
López Lastra, Claudia Cristina
author_facet Musso, Anahí
Marcondes Almeida, José Eduardo
Padín, Susana Beatriz
Ordoqui, Eliana
López Lastra, Claudia Cristina
author_sort Musso, Anahí
title Efficacy of entomopathogenic fungi against Rhyzopertha dominica (Fabricius) (Coleoptera: Bostrichidae) under laboratory conditions
title_short Efficacy of entomopathogenic fungi against Rhyzopertha dominica (Fabricius) (Coleoptera: Bostrichidae) under laboratory conditions
title_full Efficacy of entomopathogenic fungi against Rhyzopertha dominica (Fabricius) (Coleoptera: Bostrichidae) under laboratory conditions
title_fullStr Efficacy of entomopathogenic fungi against Rhyzopertha dominica (Fabricius) (Coleoptera: Bostrichidae) under laboratory conditions
title_full_unstemmed Efficacy of entomopathogenic fungi against Rhyzopertha dominica (Fabricius) (Coleoptera: Bostrichidae) under laboratory conditions
title_sort efficacy of entomopathogenic fungi against rhyzopertha dominica (fabricius) (coleoptera: bostrichidae) under laboratory conditions
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/119359
https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/2829
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