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A tunicate is an exclusively marine invertebrate animal, a member of the subphylum Tunicata (/ ... Adult tunicates have a hollow cerebral ganglion, equivalent to a ...
Illustration of an adult ascidian, showing the branchial siphon, atrial siphon, cerebral ganglion, mantle, tunic, endostyle, stigmata, branchial basket and atrium Illustration of a larval ascidian, showing the papillae, cerebral vesicle, ocellus and statocyst. Tunicates (subphylum Tunicata) are a group of filter-feeding marine invertebrates. [1]
Like a common tunicate larva, the adult Appendicularia have a discrete trunk and tail. It was originally believed that larvaceans were neotenic tunicates, giving them their common name. Recent studies hint at an earlier divergence, with ascidians having developed their sessile adult form later on.
Ascidiacea, commonly known as the ascidians or sea squirts, is a paraphyletic class in the subphylum Tunicata of sac-like marine invertebrate filter feeders. [2] Ascidians are characterized by a tough outer test or "tunic" made of the polysaccharide cellulose.
Ciona intestinalis (sometimes known by the common name of vase tunicate) is an ascidian (sea squirt), a tunicate with very soft tunic. Its Latin name literally means "pillar of intestines", referring to the fact that its body is a soft, translucent column-like structure, resembling a mass of intestines sprouting from a rock. [1]
The tunicates have three distinct adult shapes. Each is a member of one of three monophylitic clades. All tunicate larvae have the standard chordate features, including long, tadpole-like tails. Their larva also have rudimentary brains, light sensors and tilt sensors. [28] The smallest of the three groups of tunicates is the Appendicularia ...
Tunicata stubs (216 P) Pages in category "Tunicates" The following 5 pages are in this category, out of 5 total. This list may not reflect recent changes. ...
Corella willmeriana is a solitary tunicate in the family Corellidae. It is native to the eastern Pacific Ocean where it lives on the seabed at depths down to about 75 m (250 ft) between Alaska and California.