title: The first European stand of Paramecium sonneborni (P. aurelia complex), a species known only from North America (Texas, USA).
abstract: P. aurelia is currently defined as a complex of 15 sibling species including 14 species designated by Sonneborn (1975) and one, P. sonneborni, by Aufderheide et al. (1983). The latter was known from only one stand (Texas, USA). The main reason for the present study was a new stand of Paramecium in Cyprus, with strains recognized as P. sonneborni based on the results of strain crosses, cytological slides, and molecular analyses of three loci (ITS1-5.8S-ITS2-5'LSU rDNA, COI, CytB). The new stand of P. sonneborni in Europe shows that the species, previously considered endemic, may have a wider range. This demonstrates the impact of under-sampling on the knowledge of the biogeography of microbial eukaryotes. Phylogenetic trees based on all the studied fragments revealed that P. sonneborni forms a separate cluster that is closer to P. jenningsi and P. schewiakoffi than to the other members of the P. aurelia complex.
authors.affiliation: Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Kraków 31-016, Sławkowska 17, Poland.
authors.forename: Ewa
authors.initials: E
authors.lastname: Przyboś
authors.affiliation: Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Kraków 31-016, Sławkowska 17, Poland. Electronic address: tarcz@isez.pan.krakow.pl.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Tarcz
authors.affiliation: Laboratory of Protistology and Experimental Zoology, Faculty of Biology and Soil Science, St. Petersburg State University, Saint Petersburg 199034, Universitetskaya nab. 7/9, Russia.
authors.forename: Maria
authors.initials: M
authors.lastname: Rautian
authors.affiliation: Laboratory of Protistology and Experimental Zoology, Faculty of Biology and Soil Science, St. Petersburg State University, Saint Petersburg 199034, Universitetskaya nab. 7/9, Russia.
authors.forename: Natalia
authors.initials: N
authors.lastname: Lebedeva
mesh_terms: D003535:Cyprus; D004272:DNA, Mitochondrial / Q000235:genetics; D016054:DNA, Protozoan / Q000235:genetics; D004275:DNA, Ribosomal / Q000235:genetics; D021903:DNA, Ribosomal Spacer / Q000235:genetics; D010247:Paramecium / Q000145:classification* / Q000166:cytology / Q000235:genetics; D048489:Paramecium aurelia / Q000145:classification / Q000166:cytology / Q000235:genetics; D010802:Phylogeny; D013045:Species Specificity; D013781:Texas
chemical_list: D004272:DNA, Mitochondrial; D016054:DNA, Protozoan; D004275:DNA, Ribosomal; D021903:DNA, Ribosomal Spacer
keywords: Ciliophora; Paramecium aurelia species complex; Paramecium sonneborni; Strain crosses; Three-locus analysis