Molgula

Molgula, or sea grapes, are very common, globular, individual marine tunicates roughly the size of grapes.

Molgula
Molgula oculata; a) branchial orifice; b) atrial orifice
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Subphylum: Tunicata
Class: Ascidiacea
Order: Stolidobranchia
Family: Molgulidae
Genus: Molgula
Synonyms
  • Anurella Lacaze-Duthiers, 1877
  • Ascopera Herdman, 1881
  • Astropera Pizon, 1898
  • Caesira Flemming, 1822
  • Ctenicella Lacaze-Duthiers, 1877
  • Cystingia Macleay, 1825
  • Eugyriopsis Roule, 1885
  • Euritteria Huntsman, 1922
  • Gymnocystis Giard, 1872
  • Lithonephria Giard, 1872 (misspelling)
  • Lithonephrya Giard, 1872
  • Meristocarpus Pizon, 1899
  • Mogula Kirkpatrick, 1905 (misspelling)
  • Molgulidium Seeliger, 1907
  • Molgulina Hartmeyer, 1914
  • Pera Stimpson, 1852
  • Syphonotethis Gervais, 1840
  • Xenomolgula Arnback, 1931

They are translucent with two protruding siphons. They are found subtidally, attached to slow-moving submerged objects or organisms. All species of Molgula have a fluid-filled structure called the renal sac. The renal sac contains nitrogenous wastes, solid concretions composed of weddellite and calcite, and an apicomplexan symbiont called Nephromyces.

In the western Atlantic Ocean, they range from the Arctic to North Carolina, to the center of the United States Eastern Seaboard.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.