Polyclinum sundaicum   (Sluiter,  1909) (Sea Squirt)
Organism information awaits expert curation
Class: Ascidiacea

Image copyrights: FLMNH

Size: Colony 1-5 cm diameter

Color: Living colonies are dark black

Smaller colonies sessile, rounded (1 cm diameter), larger colonies flat cushions with a collapsed upper surface (4-5 cm diameter). Surface sandy with common cloacal apertures 3-4 mm apart. Zooids crowded probably arranged in circular systems.

Zooids 5-6 mm long with a broad thorax, small horizontal gut loop and a long posterior abdomen connected by a long neck. Thorax delicate and transparent. Branchial lobes small, triangular and pointed. Atrial lip separate from aperture and has a flat, leaf like, smooth or serrated margin. 7-8 fine longitudinal muscles in the anterior half of the thorax. Prebranchial area narrow. Branchial sac has 12-13 rows of 12-15 long oval stigmata. Branchial papilla flattened tongue, one for each stigmata. Gut with the usual horizontal loop with a short smooth stomach and a long duodenal area. The posterior abdomen is long with 15 male follicles and 4 ova, 14 embryos in the right peribranchial cavity. Larval trunk measures 0.5 mm. The larva has a row of median ampullae alternating with the adhesive organs and 4 lateral ampullae.

Synonym (s)
Glossophorum sundaicum Sluiter, 1909
(Senior synonym)

Common Name (s)
Economic Importance and Threats



• Tamil Nadu, Tuticorin INDIA
• Tamil Nadu, Mandapam INDIA

Literature Source(s)
  • Meenakshi, VK (1998) Three species of polyclinid ascidians - New records to Indian waters Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin 40(1&2) 201-205 Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Florida Museum of Natural History Available at - http://www.flmnh.ufl.edu/
  • Sealifebase Available at - http://www.sealifebase.org/

Page last updated on:2010-08-24

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