Work

Impact of Conservation in Solid Media on the Pathogenic Characteristics of Metarhizium Sp.

Year: 2025

Type: article

Abstract: Ten entomopathogenic local isolates of Metarhizium sp., maintained on artificial media for three years, lost their pathogenicity. This study aimed to restore the pathogenicity of the fungus by inoculating banana black weevil, Cosmopolites sordidus (Germar, 1824) in the laboratory. Results showed a consistent restoration of pathogenic properties. The time required to kill 100 weevils decreased from 12.7 days before activation to 7.7 days after activation. The Lethal Time 50 (LT50) reduced from 7.9 days during Activation 0 to 6.2 days in Activation 2. Latency time decreased from 4.7 to 3.2 days between Activation 0 and 2. Sporulation increased from 1.55 x 107 spores/ ml to 4.44 x 107 spores/ ml, while mycelial appearance time on dead weevils reduced from 3.17 days to 2.29 days. The study concludes that assessing entomopathogenic fungi requires prior activation.

Source: Indian Journal of Entomology

DOI: 10.55446/ije.2025.2480

Authors: Kouadio Demby Laetitia Muriel, Amani Bienvenue, Aby N’Goran, Traore Siaka

Institutions: Centre National de Recherche Agronomique, Université Nangui Abrogoua

Language: English

Topic: Entomopathogenic Microorganisms in Pest Control

Subfield: Insect Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

Open Access status: bronze

OpenAlex ID: W4411095853

FWCI:

Cites: 2

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Related to: 10