Relationship between Virulence and Adhesion of the Entomopathogenic Fungus Beauveria amorpha (Strain: HpBa-1) to the Yellowish Elongate Chafer, Heptophylla picea (Motschulsky) (Coleoptera: Scarabaeidae)

Autor:	Hajime Hiromori, Masayoshi Hatsukade, Dai Yaginuma
Rok vydání:	2004
Předmět:	Larva biology Inoculation Cuticle fungi Metarhizium anisopliae Virulence biology.organism_classification Conidium Germination Insect Science parasitic diseases Entomopathogenic fungus Botany
Zdroj:	Japanese Journal of Applied Entomology and Zoology. 48:101-108
ISSN:	1347-6068 0021-4914
DOI:	10.1303/jjaez.2004.101
Popis:	We isolated an entomopathogenic fungus, Beauveria amorpha (Strain: HpBa-1), from Heptophylla picea larva. When the larvae were inoculated with HpBa-1, 90.0% cumulative mortality was obtained in 30 days. However, the cumulative mortality was low when the larvae were inoculated with Metarhizium anisopliae (Strain: PMA-7) isolated from H. picea larvae. The high virulence of HpBa-1 to H. picea larvae was analyzed by investigating the conidial adhesion and germination of HpBa-1 on larval cuticle. Numerous HpBa-1 conidia adhered to the H. picea cuticle and most conidia on the H. picea cuticle remained over time. HpBa-1 conidia germinated on H. picea cuticle 96 h postinoculation. However, few PMA-7 conidia adhered to the H. picea cuticle as compared to HpBa-1 and did not germinate on the cuticle 96 h postinoculation. From these results, conidial adhesion and germination on the cuticle of H. picea is one factor causing high virulence of HpBa-1 to the larvae.
Databáze:	OpenAIRE
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