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Eucidaris thouarsii

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Species of sea urchin

Eucidaris thouarsii
Eucidaris thouarsii in the Gulf of California
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Echinodermata
Class: Echinoidea
Order: Cidaroida
Family: Cidaridae
Genus: Eucidaris
Species: E. thouarsii
Binomial name
Eucidaris thouarsii
(Agassiz & Desor, 1846)

Eucidaris thouarsii, the slate pencil urchin (named after slate pencil), is a species of cidaroid sea urchins that inhabits littoral regions of the East Pacific Ocean.

Distribution and habitat

Eucidaris (thouarsii) galapagensis of the Galápagos, Clipperton and Cocos Islands was formerly included as a subspecies, but is now generally recognized as a separate species

Eucidaris thouarsii is found in the East Pacific at depths of 0–45 m (0–148 ft), ranging from Baja California to Panama, as well as Cocos Island, Clipperton Island and the Galápagos Islands. The Galápagos, Clipperton and Cocos populations are now often recognized as a separate species, E. galapagensis, instead of a subspecies of E. thouarsii.

Diet

Like all urchins these are primarily herbivores, but feed on a wide range of invertebrates. This species has a high nutrient absorption efficiency when it comes to the coral Pocillopora damicornis, but would require a large intake to make nutrient requirements. Due to its high intake of coral, it reduces reef growth.

References

  1. Encyclopedia of Life. "Details for: Eucidaris thouarsii". Encyclopedia of Life. Retrieved 2013-07-23.
  2. Kroh, A.; Mooi, R. "Details for: Eucidaris thouarsii". World Echinoidea Database. Retrieved 2013-07-23.
  3. Glynn, Wellington, and Birkeland (1979). Coral reef growth in the Galapagos: limitation by sea urchins. Science. 203(4375): 47-49.
  4. Natural History Museum: Eucidaris thouarsii. The Echinoid Directory. Retrieved 11 September 2014.
  5. Reyes-Bonilla, and Calderon-Aguilera (2002). Population Density, Distribution and Consumption Rates of Three Corallivores at Cabo Pulmo Reef, Gulf of California, Mexico. Marine Ecology 20(3-4).
  6. Lessios, Kessing, Robertson, and Paulay (1999). Phylogeography of the pantropical sea urchin Eucidaris in relation to land barriers and ocean currents. Evolution 53: 806-817.
  7. Baumiller, Tomasz K. (2008). "Crinoid Ecological Morphology". Annual Review of Earth and Planetary Sciences. 36: 221–49. Bibcode:2008AREPS..36..221B. doi:10.1146/annurev.earth.36.031207.124116.
  8. Lawrence, John M.; Glynn, Peter W. (1984-01-01). "Absorption of nutrients from the coral Pocillopora damicornis (L.) by the echinoid Eucidaris thouarsii (val.)". Comparative Biochemistry and Physiology A. 77 (1): 111–112. doi:10.1016/0300-9629(84)90020-3. ISSN 0300-9629.
  9. Glynn, Peter W.; Wellington, Gerard M.; Birkeland, Charles (1979-01-05). "Coral Reef Growth in the Galápagos: Limitation by Sea Urchins". Science. 203 (4375): 47–49. Bibcode:1979Sci...203...47G. doi:10.1126/science.203.4375.47. ISSN 0036-8075. PMID 17840510.

External links

Taxon identifiers
Eucidaris thouarsii
Cidaris thouarsii


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