0157654 - PAU-O 20033041 RIV US eng J - Journal Article
Šlapeta, Jan Roger - Modrý, David - Votýpka, Jan - Jirků, Milan - Lukeš, Julius - Koudela, Břetislav
Evolutionary relationships among cyst-forming coccidia Sarcocystis spp. (Alveolata: Apicomplexa: Coccidea) in endemic African tree vipers and perspective for evolution of heteroxenous life cycle.
Molecular Phylogenetics and Evolution. Roč. 27, č. 3 (2003), s. 464-475. ISSN 1055-7903. E-ISSN 1095-9513
R&D Projects: GA ČR GA524/00/P015; GA AV ČR KSK6005114
Grant - others:GA FRVŠ(CZ) 1268/2001
Institutional research plan: CEZ:AV0Z6022909
Keywords : coccidia * Sarcocystis * evolution
Subject RIV: GJ - Animal Vermins ; Diseases, Veterinary Medicine
Impact factor: 2.826, year: 2003

Data from the small subunit rRNA genes (SSU) and the D2 domain of the large subunit rRNA genes were used to reconstruct phylogeny for all species in the Sarcocystidae for which sequences are currently available. We have focused on the evolutionary history of species that circulate between snakes as definitive hosts and rodents as intermediate hosts. Trees were reconstructed using maximum parsimony, minimum evolution, maximum likelihood and the bayesian phylogenetics. Our reconstructions support monophyly of Sarcocystidae but fail to robustly resolve the relationship within clades. Using a concatenated dataset of available rDNAs, the "isosporoid" coccidia Neospora, Toxoplasma, Besnoitia, Isospora and Hyaloklossia form a sister group to the monophyletic Sarcocystis. We report the co-evolution of Sarcocystis spp. with their final snake hosts. Possible origin of the heteroxenous life cycle of Sarcocystis is discussed.
Permanent Link: http://hdl.handle.net/11104/0055092