Morphology and phylogeny of Pararaabena dentata Wolska, 1968 and further insights into the molecular evolution of trichostome ciliates (Ciliophora, Litostomatea).
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Abstract
The morphology and phylogenetic position of a trichostome ciliate, Pararaabena dentata, isolated from the intestine of an Asian elephant (Elaphas maximus) in Gaziantep Zoo, Turkey, were studied using pyridinated silver carbonate impregnation, scanning electron microscopy, and the 18S rRNA gene. Pararaabena dentata clustered together with Raabena bella and both taxa were phylogenetically not related to members of the family Blepharocorythidae, as expected in the past. Phylogenetic trees indicated that amphibian intestinal ciliates represented by Balantidium grimi, B. duodeni, and B. entozoon are basal to all other trichostome ciliates, causing the family Balantidiidae to be polyphyletic. The molecular evolution of the subclass Trichostomatia is thoroughly discussed.
期刊介绍：
Articles deal with protists, unicellular organisms encountered free-living in various habitats or as parasites or used in basic research or applications. The European Journal of Protistology covers topics such as the structure and systematics of protists, their development, ecology, molecular biology and physiology. Beside publishing original articles the journal offers a forum for announcing scientific meetings. Reviews of recently published books are included as well. With its diversity of topics, the European Journal of Protistology is an essential source of information for every active protistologist and for biologists of various fields.
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