%0 Journal Article
%T Ultrastructure and Molecular Phylogeny of Mrazekia macrocyclopis sp. n. (Microsporidia, Mrazekiidae), a Microsporidian Parasite of Macrocyclops albidus (Jur.) (Crustacea, Copepoda)
%A Issi, Irma V.
%A Tokarev, Yuri S.
%A Voronin, Vladimir N.
%A Seliverstova, Elena V.
%A Pavlova, Olga A.
%A Dolgikh, Vyacheslav V.
%J Acta Protozoologica
%V 2010
%N Volume 49, Issue 1
%P 75-84
%K Microsporidia, Mrazekia macrocyclopis sp.n., Copepoda, Macrocyclopsis albidus, ultrastructure, molecular phylogeny
%@ 0065-1583
%D 2010
%U https://ejournals.eu/en/journal/acta-protozoologica/article/ultrastructure-and-molecular-phylogeny-of-mrazekia-macrocyclopis-sp-n-microsporidia-mrazekiidae-a-microsporidian-parasite-of-macrocyclops-albidus-jur-crustacea-copepoda
%X The ultrastructure and molecular phylogeny of a new microsporidium Mrazekia macrocyclopis sp.n., a parasite of the copepod Macrocyclops albidus (Jur.) in North-West of Russia are described. All stages of its life cycle are diplokaryotic. Fresh spores are rod-shaped and 7.3–10.5 × 1.6–2.3 μm in size. Spore ultrastructure is typical of Mrazekia. The polar tube consists of the anterior clavate manubrium followed by a thin filament arranged in 3.5–4.5 nearly vertical coils. Spores are enclosed in individual sporophorous vesicles. SSU rDNA sequence analysis showed attribution of the new species to a cluster of microsporidia infecting insects (Cystosporogenes, Endoreticulatus), microsrustaceans (Glugoides), vertebrates (Vittaforma) and ciliates (Euplotespora) nested within the clade IV sensu Vossbrinck, Debrunner- Vossbrinck (2005). Mrazekia macrocyclopis is not therefore closely related to Bacillidium vesiculoformis, another microsporidium with rod-shaped spores, and the polyphyletic nature of the family of Mrazekiidae is obvious.