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Your search keyword '"ESPINEL-CORREAL, CARLOS"' showing total 3 results
Start Over Author "ESPINEL-CORREAL, CARLOS" Topic beauveria bassiana
3 results on '"ESPINEL-CORREAL, CARLOS"'

1. Alternative hosts and standardization of methods to evaluate the biocontrol activity of mycoinsecticides

Author

Torres Torres, Lissette, Espinel Correal, Carlos, Santos Díaz, Adriana Marcela, Montoya Lerma, James, Sociedad Colombiana de Entomología - Socolen, and Universidad del Valle

Subjects
Control de calidad, Diatraea saccharalis, Actividad biológica, Chloridea virescens, Metarhizium anisopliae, Beauveria bassiana
Abstract

The entomopathogenic fungi Metarhizium anisopliae (Ascomycota: Clavicipitaceae) and Beauveria bassiana (Ascomycota: Cordycipitaceae) are an alternative for the control of grassland pests (e.g. Rhammatocerus schistocercoides (Orthoptera: Acrididae) and soybean pests (e.g. Cerotoma tingomariana; Coleoptera: Chrysomelidae). To use these microorganisms as active principles of micoinsecticides, it is necessary to have quality control methods (microbiological, physicochemical and biological activity) accuracy, and reproducibility in a given timeframe. For this reason and given the difficulty in obtaining individuals in the field and in the establishment of the rearing of R. schistocercoides and C. tingomariana, we established methods for the routine evaluation of biological activity using alternative hosts. For M. anisopliae directed to the control of R. schistocercoides, the model insects Diatraea saccharalis (Lepidoptera: Crambidae) and Spodoptera frugiperda (Lepidoptera: Noctuidae) were tested, and for B. bassiana directed to the control of the target insect C. tingomariana, the model insects D. saccharalis and Chloridea virescens (Lepidoptera: Noctuidae) were evaluated. D. saccharalis and C. virescens were selected as alternative insects to evaluate the efficacy of M. anisopliae and B. bassiana, respectively. Efficacy was close to 80 % for both pathogens. The methods with the selected alternative insects were standardized and showed that they are repeatable and reproducible under the evaluated conditions

Published
2020

2. Selección y caracterización de hongos entomopatógenos para el control de Cerotoma tingomariana.

Author

Maldonado, Cindy Mejía, Espinel Correal, Carlos, Santos Díaz, Adriana, Guevara Agudelo, Judith, and Grijalba Bernal, Erika

Subjects
*BEAUVERIA bassiana, *ENTOMOPATHOGENIC fungi, *PEST control, *FUNGAL growth, *CROP yields
Abstract

Cerotoma tingomariana (Coleoptera: Chrysomelidae), is one of the major pests that affect soybean crops, which can significantly reduce crop yield. The use of entomopathogenic fungi (EPF), an alternative method of control, has come into the prominence. To contribute in the management of the pest, the objective of this study was to select and characterize an entomopathogenic fungus by high efficacy and tolerance to temperature, pH and UV-B radiation. Ten fungal isolates of the fungus Beauveria bassiana and Metarhizium spp. were tested against C. tingomariana under laboratory conditions. Bv003 and Bv060 isolates were selected with mean values of LC50 were 5.6 x 104 and 5.8 x 105 conidia/mL, respectively. Bv003 was 10,4 times more virulent than Bv060. At greenhouse condition, efficacies 54.5 % and 79.5 % were obtained with the application of LC90 to adults of C. tingomariana, respectively. Both isolates had an optimal growth at pH range of 5-7, in contrast, the fungal growth was inhibited at temperatures above 30 °C and by exposure to UV-B radiation above 18,8 minutes. Finally, the isolate Bv003 was selected as a microorganism with the potential to be used as biopesticide for the control of C. tingomariana in soybean crops. [ABSTRACT FROM AUTHOR]

Published
2020

3. Hospederos alternativos y estandarización de métodos para evaluar la actividad biocontroladora de micoinsecticidas.

Author

TORRES-TORRES, LISSETTE, ESPINEL-CORREAL, CARLOS, and MARCELA SANTOS-DÍAZ, ADRIANA

Subjects
ENTOMOPATHOGENIC fungi, SUGARCANE borer, FALL armyworm, ORTHOPTERA, BEAUVERIA bassiana, METARHIZIUM anisopliae
Abstract

Copyright of Revista Colombiana de Entomología is the property of Universidad del Valle and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2020
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