Ecology

Habitat

Depth range based on 724 specimens in 11 taxa.
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
 
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
                                        
Specimen Records:62Public Records:14
Specimens with Sequences:39Public Species:5
Specimens with Barcodes:39Public BINs:4
Species:7         
Species With Barcodes:7         
          
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Source: Barcode of Life Data Systems (BOLD)

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Barcode data

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Source: Barcode of Life Data Systems (BOLD)

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Locations of barcode samples

Collection Sites: world map showing specimen collection locations for Diadema

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Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Diadema (genus)

Diadema is a genus of sea urchins of the Family Diadematidae.

Characteristics[edit]

It 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.

Long-spined urchins Diadema, London Zoo.

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.

Fossile record[edit]

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.

Species list[edit]

According to World Register of Marine Species :


References[edit]

Bibliography[edit]

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