Physical Description

Diagnostic Description

Description

Colonies are massive, columnar, encrusting or irregular. Corallites are cylindrical, thin-walled and separated by a blistery coenosteum. Columellae are weak or absent. Septa are very exsert. Polyps are sometimes extended during the day (Veron, 1986).
  • Veron, J.E.N. (1986). Corals of Australia and the Indo-Pacific. Angus & Robertson Publishers, London.
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© WoRMS for SMEBD

Source: World Register of Marine Species

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Ecology

Habitat

Depth range based on 1524 specimens in 14 taxa.
Water temperature and chemistry ranges based on 1098 samples.

Environmental ranges
  Depth range (m): 0 - 84.5
  Temperature range (°C): 22.163 - 28.810
  Nitrate (umol/L): 0.037 - 0.923
  Salinity (PPS): 33.821 - 35.530
  Oxygen (ml/l): 4.338 - 4.955
  Phosphate (umol/l): 0.067 - 0.228
  Silicate (umol/l): 0.523 - 6.846

Graphical representation

Depth range (m): 0 - 84.5

Temperature range (°C): 22.163 - 28.810

Nitrate (umol/L): 0.037 - 0.923

Salinity (PPS): 33.821 - 35.530

Oxygen (ml/l): 4.338 - 4.955

Phosphate (umol/l): 0.067 - 0.228

Silicate (umol/l): 0.523 - 6.846
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
Specimen Records: 13
Specimens with Sequences: 8
Specimens with Barcodes: 5
Species: 2
Species With Barcodes: 2
Public Records: 5
Public Species: 2
Public BINs: 1
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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Barcode data

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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Galaxea

Galaxea is a genus of colonial stony corals in the family Oculinidae. Common names include crystal, galaxy, starburst and tooth coral. They are abundant on reefs in the Indo-Pacific region and the Red Sea. [2] They are found in water less than 20 metres (66 ft) deep and favour turbid sites.[3] They are sometimes kept in reef aquaria.[4]

Description

The colonies of Galaxea have various forms according to species. G. fascicularis forms long, thin columns and is one of the largest corals known. G. paucisepta and G. longisepta form flat plates, G. acrhelia is arborescent and other species form domes and rounded mounds. Their colours are mostly olives or browns but they are often tinged with purple. The corallites in which the individual polyps live are small and crowded and have raised edges or may even be stalked. There are a large number of fine septae on the edge of the corallites, arranged in whorls and protruding as sharp ridges. The polyps contain symbiotic microalgae called zooxanthellae and grow in shallow water to maximise the uptake of sunlight.[2] They often feed in the day, extending yellowish or greenish, often white tipped tentacles.[3] They have certain specialised sweeper tentacles, long defensive organs which discourage other corals from living close by.[4]

Species

The World Register of Marine Species lists the following species:[1]

References

  1. ^ a b WoRMS (2010). "Galaxea, Oken, 1815". World Register of Marine Species. http://www.marinespecies.org/aphia.php?p=taxdetails&id=205332. Retrieved 2011-12-16.
  2. ^ a b Family Oculinidae: Galaxea Horizon. Retrieved 2011-12-16.
  3. ^ a b WoRMS (2010). "Galaxea fascicularis (Linnaeus, 1767)". World Register of Marine Species. http://www.marinespecies.org/aphia.php?p=taxdetails&id=207366. Retrieved 2011-12-16.
  4. ^ a b Galaxea Tidal Gardens. Retrieved 2011-12-16.
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