Document Detail


Susceptibility of the cactus weevil Metamasius spinolae to Beauveria bassiana and Metarhizium anisopliae under laboratory and field conditions.
MedLine Citation:
PMID:  21722279     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Aims:  To evaluate different entomopathogenic fungi isolates against the cactus weevil Metamasius spinolae under laboratory and field conditions, and select an isolate to be used as a tool in the management of this insect pest. Methods and results:  Four experiments were carried out. The effect of temperature on the in vitro growth of eight isolates of entomopathogenic fungi (two M. anisopliae and six B. bassiana) was assessed. The susceptibility of adult M. spinolae to the same isolates was evaluated. Using three selected isolates, the interaction between susceptibility and sex of the insect was studied. Finally, a field experiment was carried out to evaluate infection of adult M. spinolae by the same three isolates under natural abiotic conditions. Overall, growth rate was greatest at 25°C for all isolates. In vitro growth of M. anisopliae was greater than B. bassiana. Mortality of adult M. spinolae was greater when inoculated with B. bassiana compared to isolates of M. anisopliae. Susceptibility had no interaction with the sex of the insect. The proportion of insects succumbing to infection was smaller when incubated under field conditions than when incubated under laboratory conditions. Conclusions:  The experiments described here showed a complex interaction between entomopathogenic fungi and M. spinolae, these data allows us to select isolate Bb107as a first step towards its use in the management of this pest insect. Significance and impact of study:  Our results showed that entomopathogenic fungi can be used for the control of M. spinolae which may help reduce the use of chemical insecticides and, therefore, the exposure of Opuntia ficus-indica producers to pesticides.
Authors:
N Orduño-Cruz; A W Guzmán-Franco; E Rodríguez-Leyva; J López-Collado; J M Valdéz-Carrasco; G Mora-Aguilera
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-7-1
Journal Detail:
Title:  Journal of applied microbiology     Volume:  -     ISSN:  1365-2672     ISO Abbreviation:  -     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2011-7-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9706280     Medline TA:  J Appl Microbiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 The Society for Applied Microbiology.
Affiliation:
Especialidad de Entomología y Acarología, Colegio de Postgraduados, Campus Montecillo, Km 36.5 Carretera Mexico-Texcoco, Montecillo, Texcoco, Estado de Mexico, 56230, Mexico. Programa de Agroecosistemas Tropicales. Colegio de Postgraduados, Campus Veracruz, Km 88.5 Carretera Xalapa-Veracruz, Estado de Veracruz, 91690, Mexico. Especialidad de Fitopatología, Colegio de Postgraduados, Campus Montecillo, Km 36.5 Carretera Mexico-Texcoco, Montecillo, Texcoco, Estado de Mexico, 56230, Mexico.
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