Ecology

Habitat

Known from seamounts and knolls
  • Stocks, K. 2009. Seamounts Online: an online information system for seamount biology. Version 2009-1. World Wide Web electronic publication.
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© WoRMS for SMEBD

Source: World Register of Marine Species

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Depth range based on 3438 specimens in 120 taxa.
Water temperature and chemistry ranges based on 2144 samples.

Environmental ranges
  Depth range (m): -0.5 - 180
  Temperature range (°C): 14.967 - 28.981
  Nitrate (umol/L): 0.008 - 3.152
  Salinity (PPS): 34.319 - 38.044
  Oxygen (ml/l): 4.230 - 5.648
  Phosphate (umol/l): 0.020 - 0.535
  Silicate (umol/l): 0.380 - 5.808

Graphical representation

Depth range (m): -0.5 - 180

Temperature range (°C): 14.967 - 28.981

Nitrate (umol/L): 0.008 - 3.152

Salinity (PPS): 34.319 - 38.044

Oxygen (ml/l): 4.230 - 5.648

Phosphate (umol/l): 0.020 - 0.535

Silicate (umol/l): 0.380 - 5.808
 
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: 822
Specimens with Sequences: 402
Specimens with Barcodes: 91
Species: 105
Species With Barcodes: 90
Public Records: 92
Public Species: 56
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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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Genomic DNA is available from 1 specimen with morphological vouchers housed at National Institute of Water and Atmospheric Research, Wellington
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© Ocean Genome Legacy

Source: Ocean Genome Resource

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Wikipedia

Caulerpa

Caulerpa is a genus of seaweeds in the family Caulerpaceae (among the green algae). They are unusual because they consist of only one cell with many nuclei, making them among the biggest single cells in the world. A species in the Mediterranean can have a stolon more than 3 metres (9 ft) long, with up to 200 fronds.

Referring to its thalli's crawling habit, the name means ‘stem (that) creeps’, from the Ancient Greek kaul- (καυλός, ‘stalk’) and erp- (ἕρπω, ‘to creep’).[3]

Food use[edit]

Some species (especially Caulerpa lentillifera and C. racemosa) are eaten under the names “green caviar”, or “sea grape” (海葡萄 umi-budō?) in Okinawa. They have a peppery taste. Seagrapes are eaten in Indonesian cuisine, sometimes fresh, and othertimes coated in sugar. They are raised in Catanduanes and Cebu, for domestic consumption in the Philippines as well as exported to Japan.

Invasive behaviour[edit]

Another species, Caulerpa taxifolia, has become an invasive species in the Mediterranean Sea, Australia and southern California (where it has since been eradicated). In U.S. waters, the Mediterranean strain of Caulerpa taxifolia is listed as a federal noxious weed, under the Plant Protection Act. The Aquatic Nuisance Species Taskforce has also created a National Management Plan for the Genus Caulerpa. The state of California also prohibits possession of nine different species of Caulerpa.

It is thought that Caulerpa species have such invasive properties in these regions due to their capability to thrive in temperate waters, along with their freedom from natural predators. Most Caulerpa species evolved in tropical waters, where herbivores have immunity to toxic compounds within the alga. Temperate water herbivores have no natural immunity to these toxins, allowing Caulerpa to grow unchecked if introduced to temperate waters.

C. racemosa has recently been found in waters around Crete, where it is thought to have contributed to a significant reduction in fisheries. The alga has invaded the area from the warmer waters of the Red Sea.

Use in aquariums[edit]

Caulerpa is common in the aquarium hobby as a nitrate absorber because of its rapid growth under relatively adverse conditions. It may also be used in refugiums for a long term nitrite absorber. Many introductions of invasive Caulerpa to the wild are thought to have occurred via aquarium dumping although there is no proof that this is so. For this reason, some aquarium hobbyists have begun using Chaetomorpha or an algae scrubber instead.[4][5]

Species[edit]

Oval sea grapes, Caulerpa racemosa var. clavifera, at 5 meters depth
Feather algae, Caulerpa sertularioides at 11 meters depth on ridge

The species currently recognized are:[1]

References[edit]

  1. ^ a b Caulerpa J.V. Lamouroux, 1809 World Register of Marine Species. Retrieved 2011-08-20
  2. ^ Guiry, M.D. & Guiry, G.M. (2007). "Genus: Caulerpa taxonomy browser". AlgaeBase version 4.2 World-wide electronic publication, National University of Ireland, Galway. Retrieved 2007-09-23. 
  3. ^ Bold, Harold Charles; Wynne, Michael James (1985). Introduction to the algae. Prentice-Hall. p. 229. 
  4. ^ Nutrient Cycling In The Great Barrier Reef Aquarium. Proceedings of the 6th International Coral Reef Symposium, Australia, 1988, Vol. 2
  5. ^ Reef Invertebrates, 2003, page 46

Further reading[edit]

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Source: Wikipedia

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