Overview

Distribution

Also distributed in Maldive area, Ceylon, Bay of Bengal, East Indies, Philippine, China and south Japan (Clark & Rowe, 1971); Australia (Rowe & Gates, 1995). Ecology: benthic, inshore, continental shelf. General distribution: tropical, Indo-west Pacific Ocean, depth range 0-167 m. (Rowe & Gates, 1995).
  • Tortonese, E. (1977). Report on Echinoderms from the gulf of Aqaba (Red Sea). Italian Journal of Zoology N.S. S. IX(12): 273-290.
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Source: World Register of Marine Species

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Ecology

Habitat

Depth range based on 41 specimens in 1 taxon.
Water temperature and chemistry ranges based on 33 samples.

Environmental ranges
  Depth range (m): 9 - 67.5
  Temperature range (°C): 23.011 - 28.315
  Nitrate (umol/L): 0.181 - 2.103
  Salinity (PPS): 34.030 - 34.735
  Oxygen (ml/l): 4.135 - 4.820
  Phosphate (umol/l): 0.043 - 0.241
  Silicate (umol/l): 0.667 - 3.150

Graphical representation

Depth range (m): 9 - 67.5

Temperature range (°C): 23.011 - 28.315

Nitrate (umol/L): 0.181 - 2.103

Salinity (PPS): 34.030 - 34.735

Oxygen (ml/l): 4.135 - 4.820

Phosphate (umol/l): 0.043 - 0.241

Silicate (umol/l): 0.667 - 3.150
 
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Wikipedia

Asthenosoma varium

Asthenosoma varium is a sea urchin (an echinoderm, a member of the phylum that also includes star fish). Growing up to 22 cm (9 in.) in diameter, it lives on sand and rubble sea bottoms in the Indo-Pacific, from the Red Sea to Australia and Southern Japan. Its venom tipped spines, with distinctive globular swellings below the tip, can inflict a painful sting if handled; the pain lasts as long as several hours. This capacity, perhaps coupled with its reddish brown color, has given it the common name Fire Urchin.

Closup of Asthenosoma varium, showing distinctive spines

It plays host to the commensal shrimp Periclemenes colemani and the zebra crab, Zebrida adamsii.[1][2][3]

See also[edit]

References[edit]

  1. ^ T. Gosliner, D. Behrens & G. Williams (1996). Coral Reef Animals of the Indo-Pacific. p. 271. 
  2. ^ Matteo Guardini & Massimo Boyer. "Fire Urchin". World Database of Marine Species. Retrieved March 11, 2012. 
  3. ^ Paul Humann & Ned DeLoach (2010). Reef Creature Identification: Tropical Pacific. p. 448. 


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