Revista Colombiana de Entomología (2004) 30, 29-36

Irina Aleán C., Anuar Morales R., Claudia María Holguín A. and Anthony C. Bellotti (2004)
Patogenicidad de diferentes hongos entomopatógenos para el control de Aleurotrachelus socialis (Homoptera: Aleyrodidae) bajo condiciones de invernadero
[Pathogenicity of different fungal entomopathogens for the control of Aleurotrachelus socialis (Homoptera: Aleyrodidae) under greenhouse conditions]
Revista Colombiana de Entomología 30 (1), 29-36
Abstract: A complex of eight whitefly species associated with cassava exists in Colombia. The predominant species Aleurotrachelus socialis Bondar, which constitutes 92% of the total population and causes yield losses of up to 79% in field experiments. In order to offer cassava growers an alternative to chemical control to reduce costs and environmental degradation we assessed the pathogenicity of various strains of the entomopathogenic fungi Beauveria bassiana (Bálsamo) Vuillemin, Verticillium lecanii (Zimm.) Viegas and Paecilomyces fumosoroseus (Wize) Brown and Smith on different nymphal stages and eggs of A. socialis in order to determine the most susceptible developmental stage, select the most promising isolate and identify the lethal concentration (CL₅₀). We also evaluated different commercial formulations of entomopathogenic fungi on the most susceptible developmental stage of A. socialis. We observed differences in mortality between the fungal species used and the control treatment. The V. lecanii strain CIAT 215 was selected as the most promising because it presented the highest mortality to A. socialis developmental stages (67,3%). The most susceptible stage were eggs close to hatching. We tested the strain CIAT 215 in seven concentrations on this stage and determinated that the CL₅₀ was 1,4x10⁷ conidia/ml with a confidence interval of 3.6 x 10⁵ - 1.5 x 10⁹ conidia/ml. The evaluated commercial formulations caused mortality of less than 50%, however, they were still statistically different from the control treatment.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Spanish)
Database assignments for author(s): Anthony C. Bellotti

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Aleurotrachelus socialis	Cassava (Manihot esculenta)	Colombia
Akanthomyces muscarius (entomopathogen)	Aleurotrachelus socialis	Cassava (Manihot esculenta)	Colombia