PMID: 25792797Dec 1, 2006Paper

Molecular systematics and ultrastructural characterization of a forgotten species: Chattonidium setense (Ciliophora, Heterotrichea)

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences
Letizia ModeoGiulio Petroni

Abstract

In the present paper we redescribe the ciliate Chattonidium setense Villeneuve 1937 combining morphological observations (live, stained, scanning, and transmission electron microscope) with behavioral notes and molecular data. Ultrastructural analysis revealed remarkable similarities between Chattonidium and representative members of the class Heterotrichea in cortical structure and cytoplasmic organization. The most similar genus for these aspects appears to be Condylostoma. To verify this relatedness, 18S rRNA genes from Chattonidium and from one Condylostoma species were sequenced. Phylogenetic analysis indicates Chattonidium belongs to the class Heterotrichea defined according to the modern taxonomy, and confirms its relatedness with Condylostoma already hypothesized by Villeneuve-Brachon (1940). The presence of the aboral cavity complex, a unique feature never described in other ciliates, and its peculiar organization revealed by ultrastructural analysis fully justify, in our opinion, the maintenance of Chattonidium in the separate family Chattonidiidae, established by Villeneuve-Brachon in 1940.

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Citations

May 7, 2015·The Journal of Eukaryotic Microbiology·Noemi M FernandesInácio D Silva-Neto
Aug 3, 2007·The Journal of Eukaryotic Microbiology·Stephanie L SchmidtDetlef Bernhard
Feb 11, 2015·Zoological Science·Franciane CedrolaMarta D'Agosto
May 21, 2018·The Journal of Eukaryotic Microbiology·Pedro H Campello-NunesInácio D da Silva-Neto

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