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  • Title: Evolutionary relationships of Spirurina (Nematoda: Chromadorea: Rhabditida) with special emphasis on dracunculoid nematodes inferred from SSU rRNA gene sequences.
    Author: Wijová M, Moravec F, Horák A, Lukes J.
    Journal: Int J Parasitol; 2006 Aug; 36(9):1067-75. PubMed ID: 16753171.
    Abstract:
    The analysis of 26 new small subunit rRNA sequences obtained from helminths that primarily parasitize fishes sampled from five continents provided well-supported trees, allowing us to study the phylogenetic relationships among spirurid nematodes. The analyses have shown that Dracunculoidea is a paraphyletic taxon and Anguillicolidae and Gnathostomatidae constitute the basal branch of the suborder Spirurina. The genera Philometra and Philometroides appear to be paraphyletic, while on the higher taxonomic level, good correlation between the morphology-based system and molecular data was observed. Neither co-evolution of the studied helminths with their hosts, nor phylogeographic pattern, are apparent in our dataset.
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