Didemnum is a genus of colonial tunicates in the family Didemnidae. It is the most speciose genus in the didemnid family.[1][2] Species in this genus often have small calcareous spicules embedded in the tunic and form irregular or lobed colonies. Some Didemnum species, including Didemnum vexillum and Didemnum perlucidem are considered invasive species.[3] In early 2006, Didemnum vexillum was found covering a 230 km2 area of cobble habitat in Georges Bank off the coast of New England,[4] and is classified as an invasive species of greatest concern in coastal areas throughout Europe,[5] New Zealand, and North America.[3] Didemnum sp. invasions have also been recorded in Canada, the Mediterranean, and the Netherlands.[6]
Species in this genus can be found in tropical or temperate regions. Some tropical species such as Didemnum molle have photosynthetic algae in their tunics.[7]
The following species are recognised in the genus Didemnum:[8]
Didemnum is a genus of colonial tunicates in the family Didemnidae. It is the most speciose genus in the didemnid family. Species in this genus often have small calcareous spicules embedded in the tunic and form irregular or lobed colonies. Some Didemnum species, including Didemnum vexillum and Didemnum perlucidem are considered invasive species. In early 2006, Didemnum vexillum was found covering a 230 km2 area of cobble habitat in Georges Bank off the coast of New England, and is classified as an invasive species of greatest concern in coastal areas throughout Europe, New Zealand, and North America. Didemnum sp. invasions have also been recorded in Canada, the Mediterranean, and the Netherlands.
Species in this genus can be found in tropical or temperate regions. Some tropical species such as Didemnum molle have photosynthetic algae in their tunics.
Didemnum est un genre de tuniciers de la famille des Didemnidés.
Selon World Register of Marine Species (26 nov. 2012)[1] :
Didemnum est un genre de tuniciers de la famille des Didemnidés.
Didemnum – rodzaj żachw z rodziny Didemnidae.
Do rodzaju zalicza się następujące gatunki[2]:
Didemnum – rodzaj żachw z rodziny Didemnidae.
Do rodzaju zalicza się następujące gatunki:
Didemnum albidum (Verrill, 1871) Didemnum amethysteum (Van Name, 1902) Didemnum asperum (Milne-Edwards, 1841) Didemnum biglans (Sluiter, 1906) Didemnum candidum (Savigny, 1816) Didemnum carnulentum (Ritter and Forsyth, 1917) Didemnum chilense (Arnbaeck, 1929) Didemnum coriaceum (Von Drasche, 1883) Didemnum fulgens (Milne-Edwards, 1841) Didemnum galacteum (Lotufo and Dias, 2007 Didemnum listeranium (Milne-Edwards, 1841) Didemnum helgolandicum Michaelsen, 1921 Didemnum lahillei (Hartmeyer, 1909) Didemnum maculosum (Milne-Edwards, 1841) Didemnum molle (Herdmann, 1886) Didemnum santaelenae (Van Name, 1945) Didemnum studeri (Hartmeyer, 1911) Didemnum tenue (Herdmann, 1886) Didemnum vanderhorsti (Van Name, 1924) Didemnum vexillum (Kott, 2002)