ascidian

(redirected from Ascidians)
Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to Ascidians: Urochordata, Bryozoans, Tunicates

ascidian

any PROTOCHORDATE of the class Ascidiacea (subphyllum Tunicata), such as the sea squirt, the adults of which are degenerate and sedentary. See also APPENDICULARIA.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
The study of the marine benthic communities of the northern Chilean coast is of great importance because the intense maritime traffic makes this region more susceptible to the introduction and establishment of tropical and subtropical, exotic species of ascidians (Turon et al., 2016a, 2016b).
Ascidians (Class Ascidiacea), also known as tunicates or sea squirts, are marine invertebrates that are sessile suspension feeders and usually attached to a substrate.
Ascidians as excellent chordate models for studying the development of the nervous system during embryogenesis and metamorphosis.
Different bivalve, ascidian (tunicate) and polychaete species have been found to be the primary host for haplosporidian parasites.
(2004) Neurogenic and non-neurogenic placodes in ascidians. J.
The immunomodulatory and antioxidant activity of crude and fractionated extracts of the ascidian Styela clava were determined by in vitro screening.
A halogenated furanone rubrolide O isolated from a New Zealand ascidian Synoicum sp., which inhibited superoxide anion production in human neutrophils ([IC.sub.50] = 35 [micro]M) in vitro with low toxicity [28].
Havenhand, "Fertilization and the potential for dispersal of gametes and larvae in the solitary ascidian Ascidia mentula Muller," Ophelia, vol.
Ascidians and bryozoans were attached to the panel in a greater proportion (Fig.
The Ascidians, commonly called sea squirts (Subphylum: Urochordata, Class Ascidiacea) are dominant organisms in many marine communities, having a wide geographic distribution [32].