Holothuria (Thymiosycia) impatiens   (Forskal,  1775) (Sea Cucumber)
Organism information awaits expert curation
Class: Holothuroidea

Image copyrights: Sumaitt Putchakarn

Size: 60 mm- 240 mm

Color: Creamy white with a few violet color bands prominent on the ventral side. A few dark brown blotches on the dorsal side on the rest of the body. The ventral side is uniformly light brown with three dark bands. In young forms (70 mm length) there are about eight pairs of chocolate brown round blotches.

Body is bottle-shaped with a long neck and rough surface, sandy to touch. It is covered with conical warts from which filamentous appendages emerge. Tentacles 20 with tentacular collar. Anus guarded by a circle of anal papillae. Spicules consisting of tables with squarish disc with characteristically light, smooth, large peripheral holes and buttons; buttons oval in shape with mostly three pairs of holes, smooth and with slightly undulating margins and obtuse ends and three pairs of large, smooth and parallelly arranged holes, rods bilobed and perforated at ends, spicule surfaces appear polished. Central portion dilated like a ring and has invariably two holes. Tips slightly expanded and provided with one to four holes which are generally smaller than those found at the middle.

Radial pieces of the calcareous ring much larger than inter-radials and project forward; rounded margins have a deep concavity. Inter-radial pieces with short teeth. A single stone canal and one or two polian vesicles. Cuvierian tubules occur in relatively large bunches. Respiratory trees slender with a few branches. Longitudinal muscle bands very thick. Spire robust and the top of the spire with a number of teeth which are level with the upper cross beam.

It is a secretive form found under dead coral stones. On disturbing the animal white sticky threads are ejected. It is an active sea cucumber.

Synonym (s)
Holothuria (Thymiosycia) impatiens bicolor Clark, 1938
Fistularia impatiens Forskal 1775
Holothuria (Thymiosycia) impatiens Mukhopadhyay and Samanta, 1983
Holothuria (Thymiosycia) impatiens concolor Clark, 1921
Holothuria (Thymiosycia) impatiens lutea Clark, 1921
Holothuria (Thymiosycia) impatiens pulchra Clark, 1921
Holothuria (Thymiosycia) truncata Lampert, 1885
Holothuria botellus Selenka, 1867
Holothuria truncata Lampert, 1885
Holothuria fulva Quoy & Gaimard, 1834
Holothuria ophidiana Quoy & Gaimard, 1834

Common Name (s)
Economic Importance and Threats

Habitat:  Benthic, Sandy, Coastal


• Lakshadweep, Andrott Island INDIA
• Andaman and Nicobar Islands, Andaman Islands INDIA
• Lakshadweep, Minicoy Island INDIA
• Tamil Nadu, Gulf of Mannar INDIA
• SRI LANKA (Record: 1971)
• Andaman and Nicobar Islands, Port Blair INDIA
• Lakshadweep, Chettalatt INDIA
• Lakshadweep, Kilttan INDIA
• Lakshadweep, Kadamatt INDIA
• Lakshadweep, Amini INDIA
• Lakshadweep, Agatti INDIA
• Lakshadweep, Kalpeni INDIA
• Lakshadweep, Minicoy INDIA
• Red Sea
• Bay of Bengal INDIA

Literature Source(s)
  • 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
  • Putchakarn, S Some coral reef echinoderms from the eastern coasts of Thailand The Swedish Museum of Natural History Available at - http://www.nrm.se/en/menu/researchandcollections/departments/invertebratezoology/research/factsoninvertebrates/galleryofechinodermimages/somecoralreefechinfromthailand.6890_en.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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