Ecology
Habitat
Water temperature and chemistry ranges based on 681 samples.
Environmental ranges
Depth range (m): 0.2 - 1814
Temperature range (°C): 4.280 - 28.546
Nitrate (umol/L): 0.008 - 39.707
Salinity (PPS): 32.593 - 36.548
Oxygen (ml/l): 0.171 - 4.984
Phosphate (umol/l): 0.055 - 3.255
Silicate (umol/l): 0.869 - 72.834
Graphical representation
Depth range (m): 0.2 - 1814
Temperature range (°C): 4.280 - 28.546
Nitrate (umol/L): 0.008 - 39.707
Salinity (PPS): 32.593 - 36.548
Oxygen (ml/l): 0.171 - 4.984
Phosphate (umol/l): 0.055 - 3.255
Silicate (umol/l): 0.869 - 72.834
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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Molecular Biology and Genetics
Barcode
Locations of barcode samples
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Statistics of barcoding coverage
| Specimen Records: | 42 |
| Specimens with Sequences: | 6 |
| Specimens with Barcodes: | 6 |
| Public Records: | 2 |
| Species: | 5 |
| Species With Barcodes: | 2 |
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Barcode data
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Wikipedia
Diadema (genus)
Diadema is a genus of sea urchins of the Family Diadematidae and is one of the most abundant, widespread, and ecologically important shallow water genera of tropical sea urchins. It is found in all tropical oceans, although is ubiquitous in the Indo-Pacific region, where it inhabits depths down to 70 m. However each species inhabits roughly separate areas of ocean.
Speciation within the genus can be difficult to confirm, partly due to hybridisation, which is at least known to occur between Diadema savignyi and Diadema setosum.
The species vary in types of sea bed they inhabit, with Diadema savignyi inhabiting sandy beds and back reef where damaged; while Diadema setosum can also commonly be found among seagrass.
The fossil record of Diadema is extremely poor, consisting only of spines that possibly belong to the genus, some of which go back to the Miocene, 5 to 24 million years ago.
References
Bibliography
- Lessios, H. A.; B. D. Kessing and John S. Pearse (2001). "Population structure and speciation in tropical seas. Global phylogeography of the sea urchin Diadema". Evolution 55 (5): 955–975. doi:10.1554/0014-3820(2001)055[0955:PSASIT]2.0.CO;2. PMID 11430656. http://www3.interscience.wiley.com/journal/118969890/abstract.
- Edge of reef
Source:
Wikipedia
Unreviewed
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