Ceratomyxa (Myxozoa: Bivalvulida): robust taxon or genus of convenience?

摘要: The genus Ceratomyxa (Myxozoa: Myxosporea: Bivalvulida) contains parasites that typically infect the gall bladders of marine teleosts. Species this have also been recorded from elasmobranchs, while best known species (Ceratomyxa shasta) is a systemic pathogen fresh water salmonid fishes. Here we characterise 10 new teleosts using morphometric and rDNA sequence data. A phylogeny all for which ssrDNA available was estimated by parsimony, maximum likelihood Bayesian analyses. Mapping host fish taxonomy, geographic locality morphology onto phylogenetic tree provided some concordance these characters to groups species, but in no case it consistent throughout inferred phylogeny. position C. shasta as sister clade contradicts previous estimates myxozoan suggested an unrelated lineage. Comparative DNA data more than 17% 200 described now represents one most cohesive lineages within Myxozoa. independent branching atypical Palliatusindecorus, indicates review diagnostic possible division into genera warranted when further are available.