Tunicate
Related Category: Vertebrate Zoology
(t´nkt), marine animal of the phylum Chordata, which also includes the vertebrates.
Tunicates: sea squirts
Most tunicates appear as adults in two major forms, both of which are bags of jelly that lack the standard features of chordates: "sea squirts" are sessile and consist mainly of water pumps and filter-feeding apparatus; ...
Sponges, tunicates and other benthic invertebrates constitute the bulk of the Moorish Idol's diet.
Ciona intestinalis, Vase Tunicate
Cirrhilabrus condei, Blackfin Fairy Wrasse
Cirrhilabrus sanguineus, Bloody Fairy Wrasse
Cirrhilabrus cyanopleura, Blueside Wrasse
Cirrhilabrus exquisitus, Exquisite Fairy Wrasse ...
Diet: Leatherbacks feed mainly on pelagic (open ocean) soft-bodied invertebrates such as jellyfish and tunicates. Their diet may also include squid, fish, crustaceans, algae, and floating seaweed.
The walls also had a number of moray eels, small triplefins, sponges, tunicates, anemones, and the wonderful Lord Howe Coralfish, a tropical species in the butterflyfish family that reaches the edge of its range in the Poor Knights.
Habits: Leatherbacks feed almost exclusively on jellyfish, but also eat tunicates and seaweed. The mouth and esophagus have backward-pointing spines that aid in swallowing jellyfish.
Although they just look like slimy sacs, tunicates or sea squirts, are more closely related to humans than any other invertebrate group. This is because larval tunicates have several chordate structures - including a nerve chord and a notochord.
The phylum Chordata consists of three subphyla: Urochordata, represented by tunicates; Cephalochordata, represented by lancelets; and Craniata, which includes Vertebrata.
Tunicates are also in the chordata phylum. Tunicates are small, tube-like filter-feeding marine animals without skeletons. Seasquirts are tunicates.
Sponges, algae, bryozoans, zooantharians, gorgonians, and tunicates
INCUBATION:
Species exhibits dioecism. Fertilization is external. Species is open water/substratum egg scatterer. Spawning primarily occurs in late summer.
Primarily sponges, supplemented by algae, tunicates, hydroids, and bryozoans
INCUBATION:
Species exhibits dioecism. Fertilization is external. Species is open water/substratum egg scatterer.
Subphylum: Tunicata (tunicates)
Subphylum: Cephalochordata (lancelets)
Subphylum: Vertebrata (vertebrates)
References: ...
Habitat In gravelly sand and among rocks; among mussels, tunicates, and other growth on rocks and pilings; from low-tide line to water 170' (52 m) deep.
Range Maine to New York; entire Pacific Coast.
The mechanisms that cause the absorption are not known, though other aquatic animals, including tunicates, also show this behavior. It also has an extremely high concentration of mercury in its blood compared to other mammals.
Carnivore. Sea bottom dwellers such as clams, tunicates, fish, squid, and octopus.
Predators and Threats
Humans.
Diet
Zooplankton (food for Alaskan pollock larvae), euphausiid krill, tunicates, copepods, shrimp, small pollock.
Habitat
Biogeographic realm
Palearctic, Nearctic ...
Cephlapodia . . . Corals . . . Crustaceans . . . Echinoderms . . . Bivalvia . . . Gastropods . . . Jellyfish . . . Sponges . . . Sea Squirts Tunicates . . . Nudibranches . . . Horseshoe Crabs . . . Worms
AQUATIC MAMMALS ...
The Ascidicolidae have variable characters, showing a gradual adaptation to parasitic life in Tunicates.
Average age to sexual maturity has not been well documented. Primarily a water-column feeder (Ernst et al. 1994). Jellyfish are a main component of the diet, but also eat other items such as squid, crustaceans, and tunicates.
 See also: Reptile, Turtle, Crustacean, Dinosaur, Cnidaria
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