Morphology and molecular phylogeny of three new oligotrich ciliates (Protozoa,Ciliophora) from the South China Sea |
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| Authors: | Xiaofeng Lin Jiqiu Li Saleh A. Al‐Farraj Khaled A. S. Al‐Rasheid Weibo Song |
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| Affiliation: | 1. Laboratory of Protozoology, Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, South China Normal University, Guangzhou, China;2. Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia;3. Laboratory of Protozoology, Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, China |
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| Abstract: | The present paper documents the morphology and systematic positions of three new oligotrich ciliates, P arallelostrombidium obesum sp. nov. , P arallelostrombidium ellipticum sp. nov. , and S trombidium tropicum sp. nov. , which were sampled from habitats with different salinities in southern China. P arallelostrombidium obesum sp. nov. is characterized by a fat body and the posterior portions of the girdle and ventral kineties extending transversely on the dorsal side. P arallelostrombidium ellipticum sp. nov. is recognizable by the anterior ends of the girdle and ventral kineties being close to each other and the posterior ends of the girdle and ventral kineties intersecting on the dorsal side. S trombidium tropicum sp. nov. is distinguished by a ventrally opened girdle kinety that is slightly spiralled with the right end shifted posteriad. Small subunit rRNA gene trees show that P . obesum sp. nov. and P . ellipticum sp. nov. fall into a mixed group composed of Parallelostrombidium and some Novistrombidium species, and that S . tropicum sp. nov. branches at the base of the clade containing non‐Strombidium species. The relationships of Parallelostrombidium species and that of Strombidium species are both not resolved considering their low support values in our phylogenetic analysis. © 2015 The Linnean Society of London |
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| Keywords: | Parallelostrombidium ellipticum sp. nov. Parallelostrombidium obesum sp. nov. − small subunit rRNA Strombidiidae Strombidium tropicum sp. nov. |
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