Cionidae

	Cionidae Cionidae is a family of sea squirts belonging to the suborder Phlebobranchia Phlebobranchia is a suborder of tunicate, sea squirts in the class Ascidiacea. Characteristics The group includes both colonial and solitary animals. They are distinguished from other sea squirts by the presence of longitudinal vessels in the .... References Enterogona Tunicate families {{tunicata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Phlebobranchia Phlebobranchia is a suborder of sea squirts in the class Ascidiacea. Characteristics The group includes both colonial and solitary animals. They are distinguished from other sea squirts by the presence of longitudinal vessels in the pharyngeal basket. This provides the etymology of their name: in ancient greek, means "blood vessel". Another characteristic of phlebobranchians is the gonads being surrounded by a loop of gut. The posterior part of the abdomen is absent, and many species also lack the epicardial cavity that surrounds the heart and other internal organs in many other sea squirts. Taxonomy * ?† Permosomidae ** ?†'' Permosoma tunicatum'' Jaekel 1915 'Sphaerospongia permotessellata'' Parona 1933* Agneziidae Monniot & Monniot 1991 gnesiidae Michaelsen 1898'' Adagnesia'' Kott 1963 '' Agnezia'' Monniot & Monniot 1991 'Agnesia'' Michaelsen 1898 non Koninck 1883'' Caenagnesia'' Ärnbäck-Christie-Linde 1938 '' Proagnesia depressa'' (Millar 1955) '' Ptery ... [...More Info...] [...Related Items...] OR:** [Wikipedia] [Google] [Baidu]
	Ciona ''Ciona'' is a genus of sea squirts in the family Cionidae. The body of ''Ciona'' is bag-like and covered by a tunic, which is a secretion of the epidermal cells. The body is attached at a permanent base located at the posterior part, and the opposite bears two openings, the buccal (oral) and atrial (cloacal) siphons. The water is drawn into the ascidian through the buccal siphon and leaves the atrium through the atrial siphon. Species Species in this genus include: * ''Ciona antarctica'' * '' Ciona edwardsi'' * '' Ciona fascicularis'' * ''Ciona gelatinosa'' * '' Ciona hoshinoi'' * '' Ciona imperfecta'' * '' Ciona intermedia'' * ''Ciona intestinalis'' * '' Ciona longissima'' * '' Ciona mollis'' * '' Ciona pomponiae'' * '' Ciona robusta'' * '' Ciona roulei'' * '' Ciona savignyi'' * '' Ciona sheikoi'' Genome projects As of 2008, the genomes of ''Ciona intestinalis''P. Dehal et al.: ''The draft genome of Ciona intestinalis: insights into chordate and vertebrate o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Tunicate A tunicate is a marine invertebrate animal, a member of the subphylum Tunicata (). It is part of the Chordata, a phylum which includes all animals with dorsal nerve cords and notochords (including vertebrates). The subphylum was at one time called Urochordata, and the term urochordates is still sometimes used for these animals. They are the only chordates that have lost their myomeric segmentation, with the possible exception of the 'seriation of the gill slits'. Some tunicates live as solitary individuals, but others replicate by budding and become colonies, each unit being known as a zooid. They are marine filter feeders with a water-filled, sac-like body structure and two tubular openings, known as siphons, through which they draw in and expel water. During their respiration and feeding, they take in water through the incurrent (or inhalant) siphon and expel the filtered water through the excurrent (or exhalant) siphon. Most adult tunicates are sessile, immobile an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Enterogona Ascidiacea, commonly known as the ascidians, tunicates (in part), and sea squirts (in part), is a polyphyletic class in the subphylum Tunicata of sac-like marine invertebrate filter feeders. Ascidians are characterized by a tough outer "tunic" made of a polysaccharide. Ascidians are found all over the world, usually in shallow water with salinities over 2.5%. While members of the Thaliacea and Larvacea (Appendicularia) swim freely like plankton, sea squirts are sessile animals after their larval phase: they then remain firmly attached to their substratum, such as rocks and shells. There are 2,300 species of ascidians and three main types: solitary ascidians, social ascidians that form clumped communities by attaching at their bases, and compound ascidians that consist of many small individuals (each individual is called a zooid) forming colonies up to several meters in diameter. Sea squirts feed by taking in water through a tube, the oral siphon. The water enters ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]