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Sporulation of Metarhizium anisopliae and Beauveria bassiana on Coptotermes formosanus and in vitro.

Authors :
Sun J
Fuxa JR
Henderson G
Source :
Journal of invertebrate pathology [J Invertebr Pathol] 2002 Oct; Vol. 81 (2), pp. 78-85.
Publication Year :
2002

Abstract

The sporulation of 22 total isolates of Metarhizium anisopliae and Beauveria bassiana was quantified on cadavers of the Formosan subterranean termite, Coptotermes formosanus. Conidial production increased significantly over 11 days post-death. Effects of isolates of M. anisopliae and B. bassiana on in vivo sporulation were significant. Although the overall effects of fungal species on in vivo sporulation were not significant, the interactions between fungal species and certain times post-death were significant, indicating different sporulation patterns between the two fungal species. B. bassiana isolates could be categorized into a group with high total sporulation (day 11) and low quick sporulation (on days 2 and 3), while M. anisopliae isolates fell into another group with high quick sporulation and low total sporulation. This could give M. anisopliae an advantage over B. bassiana in termite microbial control due to termite defensive social behaviors. Conidial production was significantly higher in vitro than in vivo. In vitro and in vivo sporulation differed by as much as 89x and 232x among the selected isolates of B. bassiana and M. anisopliae, respectively. Correlation between in vivo and in vitro conidial production was positive and significant. This may allow preliminary in vitro screening of a large number of isolates for high in vivo sporulation.

Details

Language :
English
ISSN :
0022-2011
Volume :
81
Issue :
2
Database :
MEDLINE
Journal :
Journal of invertebrate pathology
Publication Type :
Academic Journal
Accession number :
12445791
Full Text :
https://doi.org/10.1016/s0022-2011(02)00152-0