Potential of an indigenous strain of the entomopathogenic fungus Beauveria bassiana as a biological control agent against the Red Palm Weevil, Rhynchophorus ferrugineus

The potential of a strain of Beauveria bassiana (Ascomycota: Clavicipitaceae) obtained from a naturally infected Rhynchophorus ferrugineus (Coleoptera: Curculionidae) pupa as a biological control agent against this weevil was evaluated both in the laboratory and in semi-field assays. Laboratory resu...

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Autores principales: Dembilio, Óscar, Quesada-Moraga, Enrique, Santiago-Álvarez, Cándido, Jaques, Josep A.
Formato: Artículo
Lenguaje:Inglés
Publicado: 2017
Acceso en línea:http://hdl.handle.net/20.500.11939/5129
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author Dembilio, Óscar
Quesada-Moraga, Enrique
Santiago-Álvarez, Cándido
Jaques, Josep A.
author_browse Dembilio, Óscar
Jaques, Josep A.
Quesada-Moraga, Enrique
Santiago-Álvarez, Cándido
author_facet Dembilio, Óscar
Quesada-Moraga, Enrique
Santiago-Álvarez, Cándido
Jaques, Josep A.
author_sort Dembilio, Óscar
collection ReDivia
description The potential of a strain of Beauveria bassiana (Ascomycota: Clavicipitaceae) obtained from a naturally infected Rhynchophorus ferrugineus (Coleoptera: Curculionidae) pupa as a biological control agent against this weevil was evaluated both in the laboratory and in semi-field assays. Laboratory results indicate that this strain of B. bassiana can infect eggs, larvae and adults of R. ferrugineus (LC(50) from 6.3 x 10(7) to 3.0 x 10(9) conidia per ml). However, mortality was not the only indicator of treatment efficacy because adults of either sex inoculated with the fungus efficiently transmitted the disease to untreated adults of the opposite sex, with male-to-female and female-to-male rates of transmission of 55% and 60%, respectively. In addition, treatment with B. bassiana significantly reduced fecundity (up to 62.6%) and egg hatching (32.8%) in pairing combinations with fungus-challenged males, females or both sexes. Likewise, 30-35% increase in larval mortality was observed in larvae obtained from eggs from fungus-challenged females or from untreated females coupled with inoculated males, resulting in an overall 78% progeny reduction. Semi-field preventive assays on potted 5-year old Phoenix canariensis palms, with efficacies up to 85.7%, confirmed the potential of this strain as a biological control agent against R. ferrugineus. (C) 2010 Elsevier Inc. All rights reserved.
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spelling ReDivia51292025-04-25T14:45:27Z Potential of an indigenous strain of the entomopathogenic fungus Beauveria bassiana as a biological control agent against the Red Palm Weevil, Rhynchophorus ferrugineus Dembilio, Óscar Quesada-Moraga, Enrique Santiago-Álvarez, Cándido Jaques, Josep A. The potential of a strain of Beauveria bassiana (Ascomycota: Clavicipitaceae) obtained from a naturally infected Rhynchophorus ferrugineus (Coleoptera: Curculionidae) pupa as a biological control agent against this weevil was evaluated both in the laboratory and in semi-field assays. Laboratory results indicate that this strain of B. bassiana can infect eggs, larvae and adults of R. ferrugineus (LC(50) from 6.3 x 10(7) to 3.0 x 10(9) conidia per ml). However, mortality was not the only indicator of treatment efficacy because adults of either sex inoculated with the fungus efficiently transmitted the disease to untreated adults of the opposite sex, with male-to-female and female-to-male rates of transmission of 55% and 60%, respectively. In addition, treatment with B. bassiana significantly reduced fecundity (up to 62.6%) and egg hatching (32.8%) in pairing combinations with fungus-challenged males, females or both sexes. Likewise, 30-35% increase in larval mortality was observed in larvae obtained from eggs from fungus-challenged females or from untreated females coupled with inoculated males, resulting in an overall 78% progeny reduction. Semi-field preventive assays on potted 5-year old Phoenix canariensis palms, with efficacies up to 85.7%, confirmed the potential of this strain as a biological control agent against R. ferrugineus. (C) 2010 Elsevier Inc. All rights reserved. 2017-06-01T10:11:45Z 2017-06-01T10:11:45Z 2010 JUL 2010 article Dembilio, O., Quesada-Moraga, E., Santiago-Alvarez, Candido, Jacas, J.A. (2010). Potential of an indigenous strain of the entomopathogenic fungus Beauveria bassiana as a biological control agent against the Red Palm Weevil, Rhynchophorus ferrugineus. Journal of invertebrate pathology, 104(3), 214-221. 0022-2011 http://hdl.handle.net/20.500.11939/5129 10.1016/j.jip.2010.04.006 en openAccess Impreso
spellingShingle Dembilio, Óscar
Quesada-Moraga, Enrique
Santiago-Álvarez, Cándido
Jaques, Josep A.
Potential of an indigenous strain of the entomopathogenic fungus Beauveria bassiana as a biological control agent against the Red Palm Weevil, Rhynchophorus ferrugineus
title Potential of an indigenous strain of the entomopathogenic fungus Beauveria bassiana as a biological control agent against the Red Palm Weevil, Rhynchophorus ferrugineus
title_full Potential of an indigenous strain of the entomopathogenic fungus Beauveria bassiana as a biological control agent against the Red Palm Weevil, Rhynchophorus ferrugineus
title_fullStr Potential of an indigenous strain of the entomopathogenic fungus Beauveria bassiana as a biological control agent against the Red Palm Weevil, Rhynchophorus ferrugineus
title_full_unstemmed Potential of an indigenous strain of the entomopathogenic fungus Beauveria bassiana as a biological control agent against the Red Palm Weevil, Rhynchophorus ferrugineus
title_short Potential of an indigenous strain of the entomopathogenic fungus Beauveria bassiana as a biological control agent against the Red Palm Weevil, Rhynchophorus ferrugineus
title_sort potential of an indigenous strain of the entomopathogenic fungus beauveria bassiana as a biological control agent against the red palm weevil rhynchophorus ferrugineus
url http://hdl.handle.net/20.500.11939/5129
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