Morphology of Two Novel Species of Chaenea (Ciliophora, Litostomatea): Chaenea paucistriata spec. nov. and C. sinica spec. nov.

Xinpeng Fan,

Yuan Xu,

Fukang Gu,

Jiqiu Li,

Saleh A. Al-Farraj,

Khaled A. S. Al-Rasheid,

Xiaozhong Hu


During faunistic studies of ciliates in coastal waters of Daya Bay and Bohai Bay, China, two previously unknown ciliates were discovered and investigated using standard taxonomic methods. Morphological comparative analyses revealed that they represent two novel species in the genus Chaenea. Chaenea paucistriata spec. nov. can be distinguished from its congeners by the following traits: body length in vivo about 180–250 µm; eight somatic kineties; dorsal brush rows 1–4 consisting of three, five, seven, and two dikinetids, respectively; rod-like extrusomes, 8 µm long; 63–94 macronuclei; cortical granules minute and colourless. Chaenea sinica spec. nov. differs from its congeners in having: body length in vivo about 140–240 µm; 17–21 somatic kineties; dorsal brush rows 1–4 consisting of 3–7, 10 or 11, 11–13, and 3–6 dikinetids, respectively; rod-like extrusomes about 6–8 µm long; 71–164 macronuclei. A key is presented to assist the identification of all Chaenea species.

Słowa kluczowe: Chaenea, ciliary pattern, identification key, marine ciliates, new species, taxonomy

Carey P. G. (1992) Marine interstitial ciliates. Chapman & Hall, London, New York, Tokyo, Melbourne, Madras

Chen X., Li L., Hu X., Shao C., Al-Farraj S.A., and Al-Rasheid K. A. S. (2013) A morphogenetic description of Thigmokero­nopsis stoecki Shao et al., 2008 (Ciliophora, Hypotricha) and a comparison with members of the family Pseudokeronopsidae. Acta Protozool52: 65–72

Borror A. C. (1963) Morphology and ecology of the benthic ciliated protozoa of Alligator Harbor, Florida. Arch. Protistenkd106: 465–534

Dragesco J. (1960) Ciliés mésopsammiques littoraux. Systématique, morphologie, écologie. Trav. Stn. Biol. Roscoff (N. S.) 12: 1–356

Dragesco J. (1966) Observations sur quelques cilies libres. Arch. Protistenkd109: 155–206

Dragesco J., Dragesco-Kernéis A. (1986) Ciliés libres de l’Afrique intertropicale. Faune Tropicale 26: 1–559

Fauré-Fremiet E., Ganier M. C. (1969) Morphologie et structure fine du cilie Chaenea vorax Quenn. Protistologica 5: 353–361

Foissner W. (1984) Infraciliatur, Silberliniensystem und Biometrie einiger neuer und wenig bekannter terrestrischer, limnischer und mariner Ciliaten (Protozoa: Ciliophora) aus den Klassen Kinetofragminophora, Colpodea und Polyhymenophora. Stapfia 12: 1–165

Foissner W., Berger H., Blatterer H., Kohmann F. (1995) Taxonomische und ökologische Revision der Ciliaten des Saprobiensystems – Band IV: Gymnostomatea, Loxodes, Suctoria. Inform.-Ber. Bayer. Landesamt. Wass.-Wirtsch. 1/95: 1–540

Fryd-Versavel G., Iftode F., Dragesco J. (1975) Contribution a la connaissance de quelques Cilies gymnostomes. II. Prostomiens, pleurostomiens: morphologie, stomatogenese. Protistologica 11: 509–530

Gao S., Song W., Ma H., Yi Z., Clamp J. C., Al-Rasheid K. A. S., Al-Khedhairy A. A., Lin X. (2008) Phylogeny of six genera of the subclass Haptoria (Ciliophora, Litostomatea) inferred from sequences of small subunit rRNA genes. J. Eukaryot. Microbiol. 55: 562–566

Kahl A. (1926) Neue und wenig bekannte Formen der holotrichen und heterotrichen Ciliaten. Arch. Protistenkd. 55: 197–438

Kahl A. (1927) Neue und ergänzende Beobachtungen holotricher Ciliaten. I. Arch. Protistenkd60: 34–128

Kahl A. (1928) Die infusorien (Ciliata) der Oldesloer Salzwasserstellen. Arch. Hydrobiol19: 50–123

Kahl A. (1930) Urtiere oder Protozoa I: Wimpertiere oder Ciliata (Infusoria) 1. Allgemeiner Teil und Prostomata. Tierwelt Dtl. 18: 1–180

Kahl A. (1933) Ciliata libera et ectocommensalia. Tierwelt Nord- und Ostsee 23: 29–146

Kwon C. B., Vďačný P., Shazib S. U. A., Shin M. K. (2014) Morphology and molecular phylogeny of a new haptorian Ciliate, Chaenea mirabilis sp. n., with implications for the evolution of the dorsal brush in haptorians (Ciliophora, Litostomatea). J. Eukaryot. Microbiol. doi: 10.1111/jeu.12105–4447

Li F., Xing Y., Li J., Al-Rasheid K. A. S., He S., Shao C. (2013) Morphology, morphogenesis and small subunit rRNA gene sequence of soil hypotrichous ciliate, Perisincirra paucicirrata (Cilio­phora, Kahliellidae), from the shoreline of the yellow river, north China. J. Eukaryot. Microbiol. 60: 247–256

Lipscomb D. L., Riordan G. P. (1990) The ultrastructure of Chaenea teres and an analysis of the phylogeny of the haptorid ciliates. J. Protozool37: 287–300

Petz W., Song W., Wilbert N. (1995) Taxonomy and ecology of the ciliate fauna (Protozoa, Ciliophora) in the endopagial and pelagial of the Weddell Sea, Antarctica. Stapfia 40: 1–223

Song W., Packroff G. (1997) Taxonomische Untersuchungen an marinen Ciliaten aus China mit Beschreibungen von zwei neuen Arten, Strombidium globosaneum nov. spec. und S. platum nov. spec. (Protozoa, Ciliophora). Arch. Protistenkd. 147: 331–360

Song W., Warren A., Hu X. (2009) Free-living ciliates in the Bohai and Yellow Seas, China. Science Press, Beijing

Wang C. C. (1934) Notes on the marine infusoria of Amoy. Rep. Mar. Biol. Ass. China 3: 50–70

Wilbert N. (1975) Eine verbesserte Technik der Protargolimprägnation für Ciliaten. Mikrokosmos 64: 171–179

Zhang Q., Simpson A., Song W. (2012) Insights into the phylogeny of systematically controversial haptorian ciliates (Ciliophora, Litostomatea) based on multigene analyses. Proceed. Roy. Soc. B279: 2625–2635

Czasopismo w darmowym dostępie.

Czasopismo ukazuje się w sposób ciągły on-line.
Pierwotną formą czasopisma jest wersja elektroniczna.