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Entomopathogenic Fungi Associated with Natural Populations of the Moroccan Locust Dociostaurus maroccanus (Thunberg) (Orthoptera: Gomphocerinae) and Other Acridoidea in Spain

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Abstract:

The entomopathogenic fungi Beauveria bassiana Vuill . and Metarhizium anisopliae (Metschnikoff) have been found in natural populations of the Moroccan locust Dociostaurus maroccanus (Thunberg) and other species of acridoids that cohabit the same locust breeding areas in southern Spain . Infection levels of B. bassiana on insects collected in the field and maintained under laboratory conditions were relatively high (1 . 6 - 20 . 5%) . The prevalence of the disease extended from spring to summer in the three consecutive years monitored . A local isolate of this fungus demonstrated high virulence (LD = 440 conidia / insect) against the 50 locust D. maroccanus in the laboratory bioassay . The relatively wide host range of B. bassiana and its adaptation to the dry and hot conditions dominating the locust breeding area suggest that this isolate could be considered in the development of a biological control programme against D. maroccanus.

Keywords: BEAUVERIA BASSIANA; BIOLOGICAL CONTROL; EPIZOOTIC; GRASSHOPPERS; LOCUSTS; METARHIZIUM ANISOPLIAE

Document Type: Research Article

DOI: https://doi.org/10.1080/09583159730767

Publication date: 1997-09-01

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