Phlebobranchia

Phlebobranchia
Ascidia
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Subphylum: Tunicata
Class: Ascidiacea
Order: Phlebobranchia
Lahille 1887
Families

Agneziidae
Ascidiidae
Cionidae
Corellidae
Diazonidae
Dimeatidae
Hypobythiidae
Octacnemidae
Perophoridae
Plurellidae

Synonyms

Dictyobranchiae

Phlebobranchia is an order of sea squirts in the class Ascidiacea.[1]

Characteristics

Ascidia incrassata, "Red spotted sea squirt".

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, φλέψς, φλεβός 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.[2]

Taxonomy


References

  1. Gittenberger, A.; Sanamyan, K. (2015). Phlebobranchia. In: Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira Da Rocha, R.; Swalla, B.J.; Turon, X. (2015) Ascidiacea World Database. Accessed through: World Register of Marine Species on 2015-12-23
  2. Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 1042. ISBN 0-03-056747-5.
Wikimedia Commons has media related to Phlebobranchia.
This article is issued from Wikipedia - version of the 10/8/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.