@article{dfeb5774-81e7-4164-b3b5-b890e202da0f, author = {Irma V. Issi, Yuri S. Tokarev, Vladimir N. Voronin, Elena V. Seliverstova, Olga A. Pavlova, Vyacheslav V. Dolgikh}, title = {Ultrastructure and Molecular Phylogeny of Mrazekia macrocyclopis sp. n. (Microsporidia, Mrazekiidae), a Microsporidian Parasite of Macrocyclops albidus (Jur.) (Crustacea, Copepoda)}, journal = {Acta Protozoologica}, volume = {2010}, number = {Volume 49, Issue 1}, year = {2010}, issn = {0065-1583}, pages = {75-84},keywords = {Microsporidia; Mrazekia macrocyclopis sp.n.; Copepoda; Macrocyclopsis albidus; ultrastructure; molecular phylogeny}, abstract = {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.}, doi = {}, url = {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} }