Description of a New Brackish Water Ciliate, Uronychia xinjiangensis n. sp. (Ciliophora, Euplotida) Based on Morphology, Morphogenesis and Molecular Phylogeny

• Authors: Xinlu Shi , Guijie Liu , Chundi Wang , Xiaozhong Hu

Abstracts

EN

A brackish water euplotid ciliate, Uronychia xinjiangensis n. sp., was discovered in a ditch in Yuli County, Xinjiang, China. Its morphology, ciliature and morphogenesis were investigated based on specimens examined in vivo and following protargol staining. The new species is characterized by the posterior part of the adoral zone composed of three membranelles, which has never been seen in all other known congeners. Other morphologic features include: (i) body oval-shaped, with conspicuous right anterior spur-like protrusion;(ii)size in vivo 60–90 × 40–68 μm; (iii) two macronuclear nodules; (iv) four frontal, two ventral, five transverse, three left marginal and three caudal cirri. Its morphogenesis proceeds in a usual way, except that the oral primordium forms only three proximal membranelles rather than four proximal membranelles within congeners. The small subunit rRNA gene of the new species (GenBank accession number: KX147287) comprises 1723 bp and 44.63% GC content, and differs by 0.12–1.81% from those of congeners. Phylogenetic analyses based on SSU rRNA gene sequence data reveal that Uronychia xinjiangensis n. sp. clusters with other Uronychia species with full support, which supports the monophyly of the genus Uronychia Stein, 1859.

Keywords

EN

euplotids; Uronychia; ciliature; ontogeny; SSU rDNA

• Publisher: Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
• Journal: Acta Protozoologica
• Year: 2017
• Volume: 56
• Issue: 4
• Pages: 303-315

Dates

published

2017

Contributors

author

Xinlu Shi

• Hangzhou Key Laboratory of Animal Adaptation and Evolution, Hangzhou Normal University, Hangzhou, China

author

Guijie Liu

• Hangzhou Key Laboratory of Animal Adaptation and Evolution, Hangzhou Normal University, Hangzhou, China

author

Chundi Wang

• Institute of Evolution and Marine Biodiversity & College of Fisheries, Ocean University of China, Qingdao, China

author

Xiaozhong Hu

• Institute of Evolution and Marine Biodiversity & College of Fisheries, Ocean University of China, Qingdao, China

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Identifiers

DOI

10.4467/16890027AP.17.026.7828

Biblioteka Nauki

52401896