Life cycle of the chalk brood fungus, Ascosphaera aggregata, in the alfalfa leafcutting bee, Megachile rotundata, and its associated symptomatology

The life cycle of Ascosphaera aggregata in Megachile rotundata and the symptomatology of the resultant disease are described. The formation of the ascogonium, and the process by which the asci are formed within it, are unlike other Ascomycetes. Variable numbers of asci develop within a membrane-boun...

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Bibliographic Details
Published in:Mycologia 1984-09, Vol.76 (5), p.830-842
Main Authors: McManus, W.R, Youssef, N.N
Format: Article
Language:English
Subjects:
Asci
ASCOSPHAERA
Ascosphaera aggregata life cycle
Ascospores
Cell membranes
CHALK BROOD
chalk brood disease
CHAMPIGNON
Cytoplasm
FUNGI
Honey bees
Hyphae
Larvae
Larval development
MEGACHILE ROTUNDATA
Megachile rotundata symptomatology
Mother cells
SINTOMAS
SYMPTOME
SYMPTOMS
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Summary:The life cycle of Ascosphaera aggregata in Megachile rotundata and the symptomatology of the resultant disease are described. The formation of the ascogonium, and the process by which the asci are formed within it, are unlike other Ascomycetes. Variable numbers of asci develop within a membrane-bound "chamber," which is derived from the ascogenous hyphae within the nutriocyte. Following sporogenesis, the newly developed ascospores are retained within the membrane-bound chambers where they form tightly packed, spore-containing spheres, the spore balls.
ISSN:0027-5514
1557-2536
DOI:10.1080/00275514.1984.12023921