title: Stylonychia lemnae strains from a North American site differ in a single nucleotide within the small subunit rDNA from Eurasian strains.
abstract: Stylonychia lemnae (Ciliophora, Spirotrichea), a member of the Stylonychia mytilus complex, shows a global distribution, occurring in many temperate fresh waters. As there are few descriptions of biogeographical patterns of ubiquitously occurring ciliated protozoans, we report a distinct sequence difference within the small subunit ribosomal DNA gene, which occurs only in the clones of S. lemnae isolated from the surroundings of Ithaca (USA) in comparison with clones of the same species from different regions in Europe, Asia, and South Africa.
authors.affiliation: Department of Molecular Evolution and Animal Systematics, University of Leipzig, Leipzig 04103, Germany. sschmidt@rz.uni-leipzig.de
authors.forename: Stephanie L
authors.initials: SL
authors.lastname: Schmidt
authors.forename: Dieter
authors.initials: D
authors.lastname: Ammermann
authors.forename: Martin
authors.initials: M
authors.lastname: Schlegel
authors.forename: Detlef
authors.initials: D
authors.lastname: Bernhard
mesh_terms: D000818:Animals; D001208:Asia; D001483:Base Sequence; D016798:Ciliophora / Q000145:classification* / Q000235:genetics*; D016054:DNA, Protozoan / Q000235:genetics; D004275:DNA, Ribosomal / Q000235:genetics*; D005060:Europe; D005618:Fresh Water / Q000469:parasitology*; D048631:Micronucleus, Germline; D008969:Molecular Sequence Data; D009656:North America; D016415:Sequence Alignment; D013019:South Africa
chemical_list: D016054:DNA, Protozoan; D004275:DNA, Ribosomal