Ultrastructural study of the microsporidian chytridiopsis typographi (Chytridiopsida: Microspora) infecting the bark beetle,Ips typographus (Scolytidae: Coleoptera), with new data on spore dimorphism |
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Authors: | Kurtesh Purrini Jaroslav Weiser |
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Affiliation: | Institute of Forest Zoology, University of Goettingen, D-3400 Goettingen-Weende, Buesgenweg 3, Federal Republic of Germany;Institute of Entomology, Academy of Sciences, Flemingovo nam. 2, Prague 6, Czechoslovakia |
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Abstract: | Two types of sporogony of the microsporidian Chytridiopsis typographi in the midgut of adult bark beetle, Ips typographus, have been examined by means of light and electron microscopy. New data are reported on spore dimorphism and on the formation of pansporoblasts in two types of sporogony. Thin-walled spores, larger in size, are formed in a parasitophorous vacuole in the host columnar cells. Thick-walled spores are formed in a minimal vacuole in the host. The ultrastructure of the spore walls and the cyst wall are different from the organization in other microsporidia. Both spore types have identical internal structures and viable spores. |
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Keywords: | Microsporida Scolytidae |
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