@article{1559b304-923a-4008-924f-906ebd425402,
author = {Lingyun Chen, Xiaolu Zhao, Hamed A. El-Serehy, Jie Huang, John C. Clamp},
title = {The Systematic Studies on the Hypotrich Ciliate, Tachysoma pellionellum (Müller, 1773) Borror, 1972 (Protozoa, Ciliophora) Based on Integrative Approaches: Morphology, Morphogenesis and Molecular Phylogenetic Analyses},
journal = {Acta Protozoologica},
volume = {2017},
number = {Volume 56, Issue 4},
year = {2017},
issn = {0065-1583},
pages = {221-233},keywords = {fresh water ciliate; ontogenesis; phylogenetic analysis; taxonomy},
abstract = {Tachysoma pellionellum Stokes, 1887, a freshwater ciliate isolated from Stone Mountain State Park, North Carolina, was studied in vivo and after staining with protargol. The population was characterized mainly by having the typical 18 frontal-ventral-transverse cirri; posterior ends of left and right marginal rows not confluent; five dorsal kineties and one dorsomarginal kinety; two macronuclear nodules near left cell margin with one or two micronuclei between them; contractile vacuole located at mid-body near left margin. Morphogenesis is characterized as follows: (1) in the proter, the parental adoral zone of membranelles is retained completely; (2) 18 frontal-ventral-transverse cirri are derived from the anlage of the undulating membrane and the five streaks of the frontal-ventral-transverse anlagen; (3) marginal rows develop intrakinetally; (4) anlagen of dorsal kineties 1, 2 and 4 develop in the parental structure and anlagen of dorsal kineties 2 and 4 fragment in the posterior region forming anlagen of dorsal kineties 3 and 5; (5) only one dorsomarginal kinety formed; (6) the two macronuclear nodules fuse into a single mass, which then divides. Phylogenetic analyses based on sequences of the gene coding for SSU RNA revealed a close relationship between T. pellionellum and the Oxytricha clade, both of which grouped with Kleinstyla dorsicirrata and Heterourosomoida lanceolata.},
doi = {10.4467/16890027AP.17.020.7822},
url = {https://ejournals.eu/en/journal/acta-protozoologica/article/the-systematic-studies-on-the-hypotrich-ciliate-tachysoma-pellionellum-muller-1773-borror-1972-protozoa-ciliophora-based-on-integrative-approaches-morphology-morphogenesis-and-molecular-phylogenetic-analyses}
}