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Centers for Disease Control/Division of Parasitic Diseases and Malaria
EOL staff
General microsporidian life cycle The infective form of microsporidia is the resistant spore, which can survive for long periods in the environment (1). The spore extrudes its polar tubule and infects the host cell (2). The spore injects the infective sporoplasm into the eukaryotic host cell through the polar tubule (3). Inside the cell, the sporoplasm undergoes extensive multiplication either by merogony (binary fission) or schizogony (multiple fission) (4). This development can occur either in direct contact with the host cell cytoplasm (e.g., Enterocytozoon bieneusi) or inside a vacuole known as a parasitophorous vacuole (e.g., Encephalitozoon intestinalis). Either free in the cytoplasm or inside a parasitophorous vacuole, microsporidia develop by sporogony to mature spores (5). During sporogony, a thick wall is formed around the spore, which provides resistance to adverse environmental conditions. When the spores increase in number and completely fill the host cell cytoplasm, the cell membrane is disrupted and releases the spores to the surroundings (6). These free mature spores can infect new cells, continuing the cycle.From
Centers for Disease Control Parasites and Health website.
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Electron micrograph of a single spore
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Summary[
edit] Description: This file has no description, and may be lacking other information. Please provide a meaningful description of this file. Date: 19 January 2006 (original upload date). Source: No machine-readable source provided. Own work assumed (based on copyright claims). Author: No machine-readable author provided.
MGrieb~commonswiki assumed (based on copyright claims).
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Summary[
edit] Description: English: Spores of the microsporidium Ordospora colligata as seen with phase-contrast microscopy. The spores are about 2-3 µm long. Spores are sometimes seen to form chains. The host is Daphnia magna. Date: 9 June 2002, 07:33:01. Source: Own work. Author:
Dieter Ebert, Basel, Switzerland.
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Longitude (deg): -0.6. Latitude (deg): 50.8. Longitude (deg/min): 0ð 40' W. Latitude (deg/min): 50ð 50' N. Vice county name: West Sussex. Vice county no.: 13. Country: England. Stage: Fruitbody. Associated species: small Dicranales. Identified by: Malcolm Storey. Comment: amongst moss in wheel rut. Category: macro-photograph. Photographic equipment used: Pixera Pro tethered low-resolution digital camera with bellows and Olympus Zuiko 50mm macro lens.
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Summary[
edit] Description: This file has no description, and may be lacking other information. Please provide a meaningful description of this file. Date: 19 January 2006 (original upload date). Source: No machine-readable source provided. Own work assumed (based on copyright claims). Author: No machine-readable author provided.
MGrieb~commonswiki assumed (based on copyright claims).
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Summary[
edit] Description: English: Anterior half of the gut of Daphnia magna with an infection by the microsporidium Ordospora colligata. The parasite is best seen as light clusters in the two blind-sacks in the upper left corner of the picture. Date: 20 March 2006. Source: Own work. Author:
Dieter Ebert, Basel, Switzerland.
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Summary[
edit] Description: Deutsch: Encephalitozoonose mit Schiefhals. Français : Lapin atteint d'encéphalitozoonose, infection parasitaire causée par un protozoaire, Encephalitozoon cuniculi. Source: Own work. Author:
MGrieb, reworked by
Saibo.
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Longitude (deg): -1.9. Latitude (deg): 50.8. Longitude (deg/min): 1ð 50' W. Latitude (deg/min): 50ð 50' N. Vice county name: Dorset. Vice county no.: 9. Country: England. Stage: Fruitbody. Associated species: Funaria hygrometrica. Identified by: Malcolm Storey. Comment: amongst moribund Common Cord-moss on old fire site. Category: macro-photograph. Image scaling: enlarged. Where photo was taken: In situ. Photographic equipment used: Canon EOS600D dSLR with Tamron SP AF Di 90mm Macro 1:1 lens.
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Longitude (deg): -1.9. Latitude (deg): 50.8. Longitude (deg/min): 1ð 50' W. Latitude (deg/min): 50ð 50' N. Vice county name: Dorset. Vice county no.: 9. Country: England. Stage: Fruitbody. Associated species: Funaria hygrometrica. Identified by: Malcolm Storey. Comment: amongst moribund Common Cord-moss on old fire site. Category: macro-photograph. Image scaling: enlarged. Where photo was taken: In situ. Photographic equipment used: Canon EOS600D dSLR with Tamron SP AF Di 90mm Macro 1:1 lens.
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Longitude (deg): -0.6. Latitude (deg): 50.8. Longitude (deg/min): 0ð 40' W. Latitude (deg/min): 50ð 50' N. Vice county name: West Sussex. Vice county no.: 13. Country: England. Stage: Fruitbody. Associated species: small Dicranales. Identified by: Malcolm Storey. Comment: amongst moss in wheel rut. Category: standard photograph or close-up. Photographic equipment used: Nikon Coolpix 950.
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Longitude (deg): -1.9. Latitude (deg): 50.8. Longitude (deg/min): 1ð 50' W. Latitude (deg/min): 50ð 50' N. Vice county name: Dorset. Vice county no.: 9. Country: England. Stage: Fruitbody. Associated species: Funaria hygrometrica. Identified by: Malcolm Storey. Comment: amongst moribund Common Cord-moss on old fire site. Category: macro-photograph. Image scaling: enlarged. Where photo was taken: In situ. Photographic equipment used: Canon EOS600D dSLR with Tamron SP AF Di 90mm Macro 1:1 lens.
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Longitude (deg): -0.6. Latitude (deg): 50.8. Longitude (deg/min): 0ð 40' W. Latitude (deg/min): 50ð 50' N. Vice county name: West Sussex. Vice county no.: 13. Country: England. Stage: Fruitbody. Associated species: small Dicranales. Identified by: Malcolm Storey. Comment: amongst moss in wheel rut. Category: macro-photograph. Photographic equipment used: Pixera Pro tethered low-resolution digital camera with bellows and Olympus Zuiko 50mm macro lens.
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Longitude (deg): -1.9. Latitude (deg): 50.8. Longitude (deg/min): 1ð 50' W. Latitude (deg/min): 50ð 50' N. Vice county name: Dorset. Vice county no.: 9. Country: England. Stage: Fruitbody. Associated species: Funaria hygrometrica. Identified by: Malcolm Storey. Comment: amongst moribund Common Cord-moss on old fire site. Category: macro-photograph. Image scaling: enlarged. Where photo was taken: In situ. Photographic equipment used: Canon EOS600D dSLR with Tamron SP AF Di 90mm Macro 1:1 lens.
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Longitude (deg): -0.6. Latitude (deg): 50.8. Longitude (deg/min): 0ð 40' W. Latitude (deg/min): 50ð 50' N. Vice county name: West Sussex. Vice county no.: 13. Country: England. Stage: Fruitbody. Associated species: small Dicranales. Identified by: Malcolm Storey. Comment: amongst moss in wheel rut. Category: microscope photograph. Photographic equipment used: Pixera Pro tethered low-resolution digital camera with Meiji microscope using CS adaptor and x.7 projection eye-piece.
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Longitude (deg): -1.9. Latitude (deg): 50.8. Longitude (deg/min): 1ð 50' W. Latitude (deg/min): 50ð 50' N. Vice county name: Dorset. Vice county no.: 9. Country: England. Stage: Fruitbody. Associated species: Funaria hygrometrica. Identified by: Malcolm Storey. Comment: amongst moribund Common Cord-moss on old fire site. Category: macro-photograph. Image scaling: enlarged. Where photo was taken: In situ. Photographic equipment used: Canon EOS600D dSLR with Tamron SP AF Di 90mm Macro 1:1 lens.
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Longitude (deg): -0.6. Latitude (deg): 50.8. Longitude (deg/min): 0ð 40' W. Latitude (deg/min): 50ð 50' N. Vice county name: West Sussex. Vice county no.: 13. Country: England. Stage: Fruitbody. Associated species: small Dicranales. Identified by: Malcolm Storey. Comment: amongst moss in wheel rut. Category: microscope photograph. Photographic equipment used: Pixera Pro tethered low-resolution digital camera with Meiji microscope using CS adaptor and x.7 projection eye-piece.
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Longitude (deg): -1.9. Latitude (deg): 50.8. Longitude (deg/min): 1ð 50' W. Latitude (deg/min): 50ð 50' N. Vice county name: Dorset. Vice county no.: 9. Country: England. Stage: Fruitbody. Associated species: Funaria hygrometrica. Identified by: Malcolm Storey. Comment: amongst moribund Common Cord-moss on old fire site. Category: macro-photograph. Image scaling: enlarged. Where photo was taken: In situ. Photographic equipment used: Canon EOS600D dSLR with Tamron SP AF Di 90mm Macro 1:1 lens.
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Longitude (deg): -0.6. Latitude (deg): 50.8. Longitude (deg/min): 0ð 40' W. Latitude (deg/min): 50ð 50' N. Vice county name: West Sussex. Vice county no.: 13. Country: England. Stage: Fruitbody. Associated species: small Dicranales. Identified by: Malcolm Storey. Comment: amongst moss in wheel rut. Category: microscope photograph. Photographic equipment used: Pixera Pro tethered low-resolution digital camera with Meiji microscope using CS adaptor and x.7 projection eye-piece.
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Longitude (deg): -1.9. Latitude (deg): 50.8. Longitude (deg/min): 1ð 50' W. Latitude (deg/min): 50ð 50' N. Vice county name: Dorset. Vice county no.: 9. Country: England. Stage: Fruitbody. Associated species: Funaria hygrometrica. Identified by: Malcolm Storey. Comment: amongst moribund Common Cord-moss on old fire site. Category: macro-photograph. Image scaling: enlarged. Where photo was taken: In situ. Photographic equipment used: Canon EOS600D dSLR with Tamron SP AF Di 90mm Macro 1:1 lens.