Ascidiacea

(redirected from Solitary ascidian)

Ascidiacea

[ə‚sid·ē′āsh·ē·ə]
(invertebrate zoology)
A large class of the phylum Tunicata; adults are sessile and may be solitary or colonial.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The solitary ascidian test may vary morphologically within as well as between species, and it is frequently necessary to dissect to identify definitively (Kott 1997), even when specimens have been observed in situ, in characteristic habitat.
Effect of temperature, salinity and delayed attachment on development of the solitary ascidian Styela plicata (Lesueur).
In this study we investigate the responsiveness of larvae of the tropical solitary ascidian Herdmania curvata (previously known as H.
Havenhand (1991) showed that sperm from a solitary ascidian (Ascidia mentula) can successfully fertilize oocytes for up to 48 h after release and that eggs are similarly longer lived.
Pyura stolonifera (Heller, 1978) is the common solitary ascidian found on intertidal rocky shores along the east coast of Australia (Kott, 1985).
We report here on the ability of a Santa Barbara, California, population of the solitary ascidian Ciona savignyi Herdman, 1882 to self-fertilize.
Differentiation of the gonad rudiment into ovary and testis in the solitary ascidian, Ciona intestinalis.
erythrogramma, but it is unclear why we saw an effect of egg size on development in the both solitary ascidian species.
Hence, although a small quantity of somatic histones and other lysine-rich basic proteins remain in the sperm nuclei from mature testis, arginine-rich SNBPs were found to replace most (if not all) of the histones during the spermiogenesis of the solitary ascidian tunicate S.