The phylogeny of the Gregarinia (Sporozoa) |
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Authors: | Jean Théodoridès |
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Affiliation: | (1) Laboratoire d'Evolution, Université Pierre et Marie Curie, 105 boulevard Raspail, 75006 Paris, France |
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Abstract: | The Gregarinia, all parasitic in invertebrates have appeared in marine hosts (Polychaeta). The most primitive are the Archigregarinida (Selenidium) which are intestinal parasites. The Eugreganida (intestinal or coelomic) are found in various marine invertebrates as well as in terrestrial or fresh water arthropods. The Neogregarinida which parasitize only insects have a very reduced number of spores compensated by a schizogony (merogony). The Gregarinia constitute a perfect example of a concomitant evolution between a group of parasites and their hosts. |
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