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Acta Protozoologica

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Phylogenetic Analyses on the Tintinnid Ciliates (Protozoa, Ciliophora) Based on Multigene Sequence Data

Publication date: 14.01.2013

Acta Protozoologica, 2012, Volume 51, Issue 4, pp. 319 - 328

https://doi.org/10.4467/16890027AP.12.025.0785

Authors

,
Yan Zhao
Laboratory of Protozoology, Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, China
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,
Feng Gao
Laboratory of Protozoology, KLM, Ocean University of China, Qingdao, China
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,
Jiqiu Li
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Zhenzhen Yi
School of Life Science, South China Normal University, Guangzhou 510631, China
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Abstract

In order to better understand phylogenetic relationships among tintinnid ciliated protozoa, we sequenced and analyzed the SSU rDNA and ITS1-5.8S-ITS2 regions of 10 species belonging to five genera in the order Tintinnida. The secondary structures of the ITS2 region were compared among 8 closely related genera, revealing two stable helices of the palm. In addition, we identified a bulge absence in position II of the ITS2 putative secondary structures of species in basal positions in phylogenetic trees, suggesting the absence bulge might be an ancestral character in the order Tintinnida. Phylogenetic analyses based on SSU rDNA and ITS1-5.8S-ITS2 regions sequence show 1) divergences within the family Tintinnidae are higher than that among other four families (Codonellidae, Ptychocylididae, Metacylididae and Codonellopsidae), suggesting the subdivision of the this family; 2) the family Ptychocylididae is polyphyletic; 3) the subdivision of Tintinnopsis are suggested, because the Tintinnopsis spp. scatter into different clades; 4) species with agglutinated loricae are not clearly separated from that with hyaline ones.

References


Information

Information: Acta Protozoologica, 2012, pp. 319 - 328

Article type: Original research article

Authors

Laboratory of Protozoology, Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, China

Laboratory of Protozoology, KLM, Ocean University of China, Qingdao, China

School of Life Science, South China Normal University, Guangzhou 510631, China

Published at: 14.01.2013

Article status: Open

Licence: None

Percentage share of authors:

Yan Zhao (Author) - 25%
Feng Gao (Author) - 25%
Jiqiu Li (Author) - 25%
Zhenzhen Yi (Author) - 25%

Article corrections:

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Publication languages:

English

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