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Related to Choanocytes: phylum Porifera
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  • noun

Synonyms for choanocyte

any of the flagellated cells in sponges having a collar of cytoplasm around the flagellum


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References in periodicals archive ?
Amazingly, half of the sponge's choanocyte (filtration) cells had divided and the choanocyte's cell division cycle was a phenomenally short 5.
These are: the presence of choanocytes in sponges, the perceived simplicity of sponges relative to other animals, and comparisons of early embryological events (other characters, e.
The new sponge has neither choanocytes nor a system for filtering water.
Differences between the structure of sponge choanocytes and the choanoflagellate cell, and the fact that many choanocytes are arranged within single chambers in a sponge (Fig.
In the calcareous sponge Sycon coactum, water enters through pores 10-20 [micro]m apart into long chambers lined by several thousand pumping choanocytes (Fig.
One view holds that the flagellated cells are transformed into the choanocytes of juvenile sponges (Borojevic and Levi, 1965; Boury-Esnault, 1976; Amano and Hori, 1994, 1996), but the opposing view contends that they are lost by exfoliation or phagocytosis during metamorphosis (Bergquist and Glasgow 1986; Misevic et al.
About 36 h after settlement, choanocytes are differentiated in the inner cell mass and formation of the choanocyte chamber begins.
Feeding in sponges has been well-documented, and with the exception of the two examples cited in the introduction, the Cladorhizidae and the Hexactinellida, particle uptake in sponges occurs at the choanocytes in the flagellated chambers or at the pinacoderm-lined incurrent canals.
The choanocytes of Acanthochaetetes wellsi possess a periflagellar sleeve; a central cell at the apopyle of the choanocyte chambers, as in the Hadromerida; and a spicule complement similar to that of the family Spirastrellidae in the order Hadromerida (Hartman and Goreau, 1975; Vacelet and Garrone, 1985; Reitner and Engeser, 1987; Boury-Esnault et al.
In the sections of sponge branches we were able to identify the following epithelial cells: exopinacocytes (covering the outer sponge surface), endopinacocytes (lining the water canals), and choanocytes (lining choanocyte chambers in the canal system).
The fate of larval cells during metamorphosis and the origin of the choanocytes of juveniles have been debated for many years among sponge biologists (Fell, 1974; Simpson, 1984; Kaye and Reiswig, 1991; Woollacott, 1993).
In calcareous sponges, larval flagellated cells are transformed into the choanocytes of a juvenile during metamorphosis (Duboscq and Tuzet, 1937; Amano and Hori, 1992, 1993).
The chamber has a diameter of about 25 [[micro]meter] and is constructed of 3-[[micro]meter]-wide choanocytes.