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The ''Eugregarinorida'' are an order of parasitic protozoa in the phylum Apicomplexa. Eugregarines are found in marine, freshwater and terrestrial habitats. These species possess large trophozoites that are significantly different in morphology and behavior from the sporozoites. This taxon contains most of the known gregarine species. These protozoa are common parasites of many invertebrates including insects and polychete worms. ==Taxonomy== There are three recognised suborders: Aseptatorina, Blastogregarinorina and Septatorina. The intestinal eugregarines are separated into septate - suborder Septatina - and aseptate - suborder Aseptatina - depending on whether the trophozoite is superficially divided by a transverse septum. The marine gregarines are the most poorly studied members of this order. The eugregarines have been classified into 27 families with ~244 genera, 14 of which have more than 25 species each.〔Rueckert S, Chantangsi1 C, Leander BS (2010) Molecular systematics of marine gregarines (Apicomplexa) from North-eastern Pacific polychaetes and nemerteans, with descriptions of three novel species: ''Lecudina phyllochaetopteri'' sp. nov., ''Difficilina tubulani'' sp. nov. and ''Difficilina paranemertis'' sp. nov.〕 There are ~900 species of sepate gregarines and ~400 of aseptate. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Eugregarinorida」の詳細全文を読む スポンサード リンク
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