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  • 1985-1989  (5)
  • 1
    Electronic Resource
    Electronic Resource
    Scanning Electron Microscopy of Developmental Stages of Malpighamoeba mellificae Prell in the Honey Bee (1985)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 32 (1985), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Primary trophozoites of Malpighamoeba mellificae Prell in the process of penetrating the cell membrane were found among the brush border of epithelial cells of the midgut of Apis mellifera L. They were long and slender with an average diameter of 3.68 μm. Their surfaces had some wrinkles and the cytoplasm contained some vesicles. Secondary trophozoites were found in the lumen of Malpighian tubules. Their size was variable and their shapes were highly irregular; some had pseudopodia. The smooth surface of trophozoites possessed numerous small protrusions and pits. Mature cysts were small and oval-shaped; they measured from 2.65 times 3.62-3.4 times 4.6 μm. Their surface was usually smooth but some had wrinkles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1985.tb03027.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Fine structure of the sporocysts of Ascosphaera apis during development as revealed by the scanning electron microscope (1987)
    Springer
    Mycopathologia 100 (1987), S. 155-158 
    Details
    ISSN: 1573-0832
    Keywords: Ascosphaera apis ; sporocysts ; spore ball ; Chalkbrood disease ; honey bee
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The fine morphology of the sporocysts of Ascosphaera apis (Maassen ex Claussen) Olive & Spiltoir, an entomopathogenic fungus of the immature honey bee has been studied using the scanning electron microscope. During the third day of mycelial growth in the culture medium, numerous short, branched hyphae were formed. The tip of the branch-hypha gradually expanded to form immature sporocysts. The immature sporocysts contained a large number of globules of varying sizes. The walls of the immature sporocysts were finely wrinkled, becoming smooth as the sporocyst matured. Both exterior and interior surfaces of the sporocyst wall possessed numerous papillae. Some globules in the developing sporocyst began to form immature spores which aggregated to form spore balls. The fully formed spore balls were not enveloped by a membrane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00437041
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Effects of itraconazole on the sporocysts wall of the entomopathogenic fungi Ascosphaera apis as revealed by the scanning electron microscope (1988)
    Springer
    Mycopathologia 103 (1988), S. 75-80 
    Details
    ISSN: 1573-0832
    Keywords: Ascosphaera apis ; Chalkbrood disease ; honey bee ; itraconazole ; sporocysts wall
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The young sporocysts had a wrinkled sporocyst wall, numerous papillae on the wall surface and the wall was granular and porous. In the itraconazole-treated culture, the walls of the young sporocysts were also wrinkled, but the characteristic papillae were replaced by larger lumps which were densely packed and coated the entire surface of the sporocyst wall. The mature sporocysts walls were smooth and possessed numerous papillae. In the itraconazole-treated culture, the walls of mature sporocysts walls were also smooth but possessed densely packed larger lumps instead of papillae. At higher magnification, each of the lumps were found to consist of numerous globules. No pores were observed as they were in the normal sporocyst wall.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00441261
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Ultrastructural changes in Nosema apis in the midgut of the honeybee treated with thimerosal in vitro (1988)
    Springer
    Parasitology research 74 (1988), S. 492-494 
    Details
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00535152
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  • 5
    Electronic Resource
    Electronic Resource
    Deformities in the spore ofNosema apis as induced by itraconazole (1989)
    Springer
    Parasitology research 75 (1989), S. 498-502 
    Details
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Ultrastructural changes in the spores ofNosema apis were observed after infected honey bees were treated with itraconazole.Nosema spores from untreated honey bees developed normally, whereas those from treated bees exhibited many deformities. One particular feature noted was the absence of the polar filament. Lipid droplets were observed in the sporoplasm of treated spores. The significance of these observations in relation to the effectiveness of itraconazole againstN. apis is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00930980
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    Paper (German National Licenses)
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