Stichopus chloronotus

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Stichopus chloronotus
Sea cucumber at Pulau Redang.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Echinodermata
Class: Holothuroidea
Order: Synallactida
Family: Stichopodidae
Genus: Stichopus
Species:
S. chloronotus
Binomial name
Stichopus chloronotus
Brandt, 1835 [2]
Synonyms [2]
  • Holothuria quadrangularis Lesson, 1830
  • Holothuria viridis Quoy & Gaimard, 1952
  • Stichopus chloronotos Brandt, 1835
  • Stichopus chloronotus fuscus Pearson, 1903
  • Stichopus cylindricus Haacke, 1880
  • Stichopus hirotai Mitsukuri, 1912

Stichopus chloronotus is a species of sea cucumber. Common names include the greenfish sea cucumber, the spiky sea cucumber and the black knobby sea cucumber. [3] It is native to the Indo-Pacific region. It has a wide range and is abundant and the IUCN lists it as being of "Least Concern".

Contents

Description

Stichopus chloronotus is a fairly large species growing to about 25 cm (10 in) with a firm but pliable body and a squarish cross section. The skin is smooth but there are numerous conical fleshy papillae in longitudinal rows, and these are larger on the lower lateral angles. This sea cucumber is a deep blackish-green in colour, and has yellow or red tips to the papillae. [3] [4]

Distribution and habitat

Stichopus chloronotus is native to the Indo-Pacific. Its range extends from the Red Sea and the East Coast of Africa, through Madagascar, the Seychelles, the Comores and Réunion [2] to Australia, Indonesia, China, Japan, Guam, Fiji, Tonga and Samoa. [1] It lives on reefs, but can also be found on rubble located on the outer reef flats [4] at depths down to about 12 m (39 ft). [3]

Biology

Stichopus chloronotus is a detritivore and sifts through the sediment on the seabed with its tentacles and feeds on detritus and other organic matter including plant and animal remains, bacteria, protozoa, diatoms and faeces. [5] In the process it swallows a lot of sand and plays an important part in churning up and aerating the seabed. [6]

Stichopus chloronotus can reproduce asexually by undergoing transverse fission, forming two new individuals which each regenerate the missing parts. It can also reproduce sexually. [1]

Status

Stichopus chloronotus processes a lot of sand Stichopus chloronotus.jpg
Stichopus chloronotus processes a lot of sand

Stichopus chloronotus is gathered for human consumption across much of its range. Although not one of the most important species for this purpose, it resembles the much-favoured Japanese sea cucumber Apostichopus japonicus and is increasingly being caught in some areas as supplies of that species dwindle. This species has a widespread distribution and is common in many parts of its range so the IUCN lists it as being of "Least Concern". [1] It is also known to occur in several protected areas, including the Dr. K.K. Mohammed Koya Sea Cucumber Conservation Reserve in Lakshadweep, India. [7]

Related Research Articles

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References

  1. 1 2 3 4 Conand, C.; Gamboa, R.; Purcell, S. (2013). "Stichopus chloronotus". IUCN Red List of Threatened Species . 2013: e.T180477A1635468. doi: 10.2305/IUCN.UK.2013-1.RLTS.T180477A1635468.en . Retrieved 20 November 2021.
  2. 1 2 3 Paulay, Gustav (2013). "Stichopus chloronotus Brandt, 1835". WoRMS. World Register of Marine Species . Retrieved 2014-02-08.
  3. 1 2 3 "Greenfish sea cucumber". Florent's Guide to the Tropical Reefs. Retrieved 2014-02-08.
  4. 1 2 "Stichopus chloronotus". North Australian Sea Cucumbers. Marine Species Identification Portal. Retrieved 2014-02-08.
  5. Poh-Sze Choo. "Population status, fisheries and trade of sea cucumbers in Asia" (PDF). FAO. Retrieved 2012-06-09.
  6. Marine Biology Papers, Volume 19 Carnegie Institution of Washington. Tortugas Laboratory, Carnegie Institution of Washington. 1924, p 34
  7. Mohammednowshad, B.; K.K., Idreesbabu; S., Sureshkumar (4 May 2021) [16 June 2020]. "Habitat wise variability in the diversity of sea cucumbers in Lakshadweep Archipelago, North-Western Indian Ocean". Regional Studies in Marine Science. 41. Elsevier. doi:10.1016/j.rsma.2021.101805 . Retrieved 18 May 2024.