Holothuria (Thymiosycia) hilla   Lesson,  1830 (Sea Cucumber)
Organism information awaits expert curation
Class: Holothuroidea

Image copyrights: RIMI

Length: 50 mm -200 mm

Color: Light brown in color in small specimens with scattered white conical papillae; large specimens are golden brown with a circular pale area around the appendages.

Body long and cylindrical with blunt ends; body wall is soft with the upper and lower sides well demarcated. Papillae sparsely arranged and have expanded bases. Ventral side has numerous pedicels arranged in three rows. A small space at the anterior end near the collar is free from pedicels. Each band of pedicels with five or six tube feet arranged side by side, mouth surrounded by 20 inconspicuous papillae.Tentacles 18; vermiform.

The calcareous ring is of the usual type with the radials longer than the inter-radials.The right respiratory tree is long extending up to the anterior end, while the left one is shorter and joins the viscera. Cuvierian tubules are present though not abundant; polian vesicles and a single stone canal present.

Spicules consist of tables and buttons, Tables possess smooth rounded discs. Four large holes corresponding to the four spires in addition to about fifteen peripheral holes, spire of the tables consists of four pillars and one cross beam which terminates in twelve or more teeth. Buttons oval, smooth and symmetrical with three or four pairs of holes. Holes at either end generally elongate. In young specimens (60 mm in length ) the tables have slightly undulating margins. The papillae have rudimentry terminal plates and curved rod-like perforated spicules.

In some specimens a Carapid fish is known to live at the base of the respiratory tree.

Synonym (s)
Holothuria hilla Lesson 1830
Holothuria (Thymiosycia) hilla Mukhopadhyay and Samanta 1983

Common Name (s)
Economic Importance and Threats

Habitat:  Reef Associated


• Lakshadweep, Kavaratti Island INDIA
• Lakshadweep, Amini Island INDIA
• Andaman and Nicobar Islands, Andaman Islands INDIA
• Tamil Nadu, Krusadai Island INDIA
• Tamil Nadu, Kilakarai INDIA
• Tamil Nadu, Tuticorin INDIA
• Tamil Nadu, Gulf of Mannar INDIA
• SRI LANKA (Record: 1971)
• Tamil Nadu, Mandapam INDIA
• Andaman and Nicobar Islands, Port Blair INDIA
• Lakshadweep, Chettalatt INDIA
• Lakshadweep, Bitra INDIA
• Lakshadweep, Kilttan INDIA
• Lakshadweep, Kadamatt INDIA
• Lakshadweep, Amini INDIA
• Lakshadweep, Minicoy INDIA

Literature Source(s)
  • Mukhopadhyaya, SK (1988) On some holothurians from the Gulf of Mannar, India Records of the Zoological Survey of India 85(1) 39830 Available at - NCL, Pune
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Mukhopadhyay, SK (1991) Echinodermata: Holothurioidea State fauna series 2: Fauna of Lakshadweep ZSI, Calcutta 399-413 Available at - NIO, Goa
  • (1988) Research Institute of Marine Invertebrates Available at - http://www.rimi.or.jp/english/indexen.html
  • James, DB (2001) Twenty sea cucumbers from seas around India Naga, The ICLARM Quarterly 24(1 & 2) 4-8 Available at - http://www.worldfishcenter.org/Naga/Naga24-1&2/pdf/features.pdf
  • Marine Biological Station, Chennai, Tamil Nadu (2003) Checklist of marine fauna of Tamil Nadu Department of Environment, Government of Tamil Nadu Available at - http://tnenvis.nic.in
  • Kumara, PBTP; Cumaranathunga, PRT and Linden, O (2005) Present status of the sea cucumber fishery in southern Sri Lanka: A resource depleted industry SPC Beche-de-mer Information Bulletin 22 24-29 Available at - http://www.spc.int/Coastfish/news/BDM/22/Terney.pdf
  • James, DB (1995) Taxonomic studies of the species of Holothuria (Linnaeus, 1767) from the seas around India. Part 1 Journal of the Bombay Natural History Society Bombay Natural History Society 92(1) 43-62 Available at - http://eprints.cmfri.org.in/7434/1/449-J._BOMBAY_NAT.HISTORY_SOC_1995.pdf
  • Sastry, DRK (2007) Echinodermata of India : An annotated list Records of Zoological Survey of India Occassional paper No. 271 ZSI, Kolkata 1-387 Available at - http://zsi.gov.in/checklist/Echinodermata_India_Checklist.pdf

Page last updated on:2011-04-21

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