Article (Scientific journals)
Production of two entomopathogenic Aspergillus species and insecticidal activity against the mosquito Culex quinquefasciatus compared to Metarhizium anisopliae
Bawin, Thomas; Seye, Fawrou; Boukraa, Slimane et al.
2016In Biocontrol Science and Technology, 26 (5), p. 617-629
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Keywords :
Solid-state fermentation; wheat bran; white rice; insect pathogenic fungi; biological control; Culicidae
Abstract :
[en] Entomopathogenic micro-organisms including fungi have become increasingly studied for integrated pest management. The spore productivity and insecticidal activity of two opportunistic insect pathogenic Aspergillus species (namely: Aspergillus clavatus Desmazieres and Aspergillus flavus Link (Ascomycota: Eurotiales, Trichocomaceae)) were compared to Metarhizium anisopliae sensu lato (Metchnikoff) Sorokin (Ascomycota: Hypocreales, Clavicipitaceae) for mosquito (Diptera: Culicidae) control. The production of aerial spores on wheat bran and white rice was investigated in solid-, semi-solid-, and liquid-state media supplemented with a nutritive solution. Wheat bran-based media were suitable for spore production and increased the spore yield in solid-state from 3 to 7 fold: A. clavatus produced 48.4 ± 5.2 and 15.7 ± 1.6 x 10^8 spores/g, A. flavus produced 22.3 ± 4.1 and 3.1 ± 2.5 x 10^8 spores/g, and M. anisopliae produced 39.6 ± 6.5 and 13.1 ± 2.6 x 10^8 spores/g of wheat bran or white rice, respectively. A. clavatus, A. flavus and M. anisopliae spores harvested from wheat bran-based solid-state media showed lethal concentrations (LC50) of 1.1, 1.8, and 1.3 x 10^8 spores/ml against Culex quinquefasciatus Say larvae in 72 h. Because A. clavatus and M. anisopliae displayed similar features when cultured under these conditions, our results suggest that insect pathogenic Aspergillus species may be as productive and virulent against mosquito larvae as a well-recognized entomopathogenic fungus. Wheat bran could advantageously be used in large-scale fermentation for a possible cost-effective pest control using these fungi.
Disciplines :
Entomology & pest control
Microbiology
Author, co-author :
Bawin, Thomas  ;  Université de Liège - ULiège > Doct. sc. agro. & ingé. biol.
Seye, Fawrou ;  Université Cheik Anta Diop > Faculté des Sciences et Techniques > Laboratoire de Biologie de la Reproduction
Boukraa, Slimane ;  Université de Liège - ULiège > Doct. sc. agro. & ingé. biol.
Zimmer, Jean-Yves ;  Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive
Raharimalala, Fara Nantenaina;  Institut Pasteur de Madagascar > Unité d'entomologie médicale
Zune, Quentin ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Bio-industries
Ndiaye, Mady;  University Cheik Anta Diop > Faculté des Sciences et Techniques > Laboratoire de Biologie de la Reproduction
Delvigne, Frank  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Bio-industries
Francis, Frédéric  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Entomologie fonctionnelle et évolutive
 These authors have contributed equally to this work.
Language :
English
Title :
Production of two entomopathogenic Aspergillus species and insecticidal activity against the mosquito Culex quinquefasciatus compared to Metarhizium anisopliae
Publication date :
09 March 2016
Journal title :
Biocontrol Science and Technology
ISSN :
0958-3157
eISSN :
1360-0478
Publisher :
Taylor & Francis Ltd
Volume :
26
Issue :
5
Pages :
617-629
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 14 January 2016

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