Sphaerospora elwhaiensis sp. n. (Myxosporea: Sphaerosporidae) from landlocked sockeye salmon Oncorhynchus nerka (Salmoniformes: Salmonidae) in Washington State, USA

0360130 - BC 2012 RIV CZ eng J - Journal Article
Jones, S. - Fiala, Ivan - Prosperi-Porta, G. - House, M. - Mumford, S.
Sphaerospora elwhaiensis sp. n. (Myxosporea: Sphaerosporidae) from landlocked sockeye salmon Oncorhynchus nerka (Salmoniformes: Salmonidae) in Washington State, USA.
Folia Parasitologica. Roč. 58, č. 2 (2011), s. 87-94. ISSN 0015-5683. E-ISSN 1803-6465
Grant - others:GA ČR(CZ) GP204/09/P519
Program: GP
Institutional research plan: CEZ:AV0Z60220518
Keywords : Sphaerospora elwhaiensis * Myxozoa * Myxosporea * kokanee * Oncorhynchus nerka
Subject RIV: GJ - Animal Vermins ; Diseases, Veterinary Medicine
Impact factor: 1.812, year: 2011
http://www.paru.cas.cz/folia/pdfs/showpdf.php?pdf=21977

A new species of sphaerosporid myxosporean, Sphaerospora elwhaiensis sp. n., is described from kidney of non-anadromous sockeye salmon (kokanee) Oncorhynchus nerka (Walbaum) from Lake Sutherland in the northern Olympic Peninsula, Washington, USA. Infection with the parasite was detected in 45% of 177 kokanee examined over 5 years. The parasite is characterised by a unique combination of valvular sculpting of the myxospore, the relatively large size of the myxospore and monosporous development within the pseudoplasmodium. In addition, nt sequences of the parasite’s small and large subunit rRNA gene are unique. Phylogenetic analyses of these sequences suggested that the parasite is most closely related to freshwater Myxidium spp. and Zschokkella spp. The molecular data have provided further evidence for a polyphyletic association previously recognized among members of the genus and emphasize the need for a taxonomic revision of Sphaerospora Thélohan, 1892 and related genera.
Permanent Link: http://hdl.handle.net/11104/0197755