Ciliophrys Cienkowski, 1876
Holotype species: Ciliophrys infusionum Cienkowski
Original publication and holotype designation: Cienkowsky, L. (1876). Über einige Rhizopoden und verwandte Organismen. Arch. Mikroskop. Anat. 12: 15-50.
Taxonomic status: currently recognized as a distinct genus.
Gender: This genus name is currently treated as neuter.
Most recent taxonomic treatment adopted: Kristiansen, J. & Preisig, H.R. (2001). Encyclopedia of Chrysophyte genera. Bibliotheca Phycologica 110: 1-260.
Description: Cell colorless, spherical and with numerous cytoplasmic arms (axopods) radiating in all directions from the cell surface. Axopods supported by triplets of microtubules which are ending on the surface of the central nucleus. In this heliozoan stage the cell is normally closely attached to the substrate by a short stalk from its posterior end; the single apical flagellum is usually inactive or moving very slowly in a figure eight configuration. It contains a reduced paraxial rod and bears 2 rows of tripartite (tubular) hairs. When the cell swims, the arms are resorbed andthe flagellum points forward, beating in a sinuoidal pattern like pedinellids. Swimming cells are often ovate to spindle shaped. Food particles are taken up at the cell surface, for larger particles the cytoplasm is extended to enclose the prey. The salient features of the heliozoan stage are the numerous arms radiating in all directions and the nearly immotile flagellum. The short stalk attaching the cell to the substrate is not easily seen with the light microscope. Cell division occurs in the heliozoan stage, often with a contraction of the axopods; sexual reproduction not reported. Nutrition involves bacteria captured by means of the radiating cytoplasmic arms, and engulfed at the cell surface. For larger particles the cytoplasm may be extended to enclose the prey. In both marine littoral and freshwater plankton; North Sea, Mediterranean, Pacific.
Information contributed by: J. Throndsen. The most recent alteration to this page was made on 8 Oct 2021 by M.D. Guiry.
Numbers of names and species: There are 2 species names in the database at present, of which 1 has been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..
Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):
Click here to also show infraspecific names in the list below.
Throndsen, J. (1996). The planktonic marine flagellates. In: Identifying marine phytoplankton. (Tomas, C.R. Eds), pp. 591-730. San Diego: Academic Press.
Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.
Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.
Created: 08 May 2002 by Elizabeth Moran
Verified by: 08 October 2021 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=44724
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 26 October 2021.