Didemnum tonga   (Herdman,  1886) (Sea Squirt)
Organism information awaits expert curation
Class: Ascidiacea

Size: 0.05mm diameter spicules

Colour: White, Zooids are yellowish brown.

Colony is thin encrustating and brittle. The test is very soft and easily torn. Bladder cell layer is clear. Hypozooidal lacuna is absent. Spicules are stellate and uniformly distributed. Spicules are easily broken with 7-9 rays.

The retractor muscle separates from the lower part of the relatively long oesophagal neck; the branchial siphon is long and cylindrical and the branchial sac is with 9 stigmata per row; the testis is having eight and a half coils of vas deferens.

Synonym (s)
Didemnum productum Monniot, 1995
(Original combination)
Leptoclinum tonga Herdman, 1886
(Original combination)

Common Name (s)
Economic Importance and Threats

Habitat:  Demersal


• Tamil Nadu, Chinnamuttom (Lat: 8.1) (Long: 77.56) INDIA
• Tamil Nadu, Rajakkamangalam INDIA
• Tamil Nadu, Tuticorin Harbour INDIA

Literature Source(s)
  • Jaffarali, HA; Sivakumar, V and Selvi, MT (2010) New records of colonial Ascidians from the South West coast of India Middle-East Journal of Scientific Research IDOSI Publications 5(5) 366-373 Available at - http://www.idosi.org/mejsr/mejsr5%285%29/9.pdf
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • 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
  • Sealifebase Available at - http://www.sealifebase.org/

Page last updated on:2011-02-11

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