Polyclinum madrasensis   Sebastian,  1952 (Sea Squirt )
Organism information awaits expert curation
Class: Ascidiacea

Size: 4.62 cm * 2.87 cm * 1.15 cm

Color: Brown, translucent

Compound ascidians, zooids embedded in common test. Colony is roughly rectangular. System is irregular with common cloacal openings. Test is soft, gelatinous and smooth. Mantle is transparent with 6-8 pairs of longitudinal muscle bands of different sizes. Zooids are large with thorax, abdomen and post-abdomen. 13 rows of stigmata, each with 13 elliptical stigmata. Branchial siphon is six-lobed, atrial siphon, a small round opening having a leaf-like languet with pointed extremity. Tentacles are simple. Dorsal lamina contains a series of languets. Stomach is smooth-walled. Abdomen contains gonads and U-shaped heart at the posterior end.

Synonym (s)

Common Name (s)
Economic Importance and Threats

Habitat:  Rocky, Coastal


• Tamil Nadu, Chennai Coast INDIA
• Tamil Nadu, Iranyanvalasai INDIA
• Kerala, Vizhinjam Bay INDIA
• Tamil Nadu, Pozhikarai INDIA
• Tamil Nadu, Chinnamuttom INDIA
• Tamil Nadu, Tuticorin INDIA
• Tamil Nadu, Karapad Creek Mangrove INDIA
• Kerala, Vizhinjam Fishing Harbour INDIA
• Tamil Nadu, Tuticorin (Lat: 8.75) (Long: 78.20) INDIA (Record: 2002-2003)

Literature Source(s)
  • Sebastian, VO and Kurian, CV (1981) Indian Ascidians Mohan Primlani, Oxford & IBH Publishing Co., New Delhi 153 pp 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
  • Abdul, JAH and Sivakumar, V (2007) Occurrence and distribution of ascidians in Vizhinjam Bay (south west coast of India) Journal of Experimental Marine Biology and Ecology 342(1) 189-190 Available at - http://dx.doi.org/10.1016/j.jembe.2006.10.041
  • Meenakshi, VK; Renganathan, TK; Senthamarai, S and Jeyalakshmi, J (2003) Marine biodiversity - Taxonomy of Indian Ascidians Technical report Available at - Biodiversity Informatics Group, NIO, Goa
  • Jaffar Ali, AH; Sivakumar, V and Tamilselvi, M (2009) Distribution of Alien and Cryptogenic Ascidians along the Southern Coasts of Indian Peninsula World Journal of Fish and Marine Sciences IDOSI Publications 1(4) 305-312 Available at - http://www.idosi.org/wjfms/wjfms1%284%2909/9.pdf

Page last updated on:2011-02-01

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