Eucidaris galapagensis

Eucidaris galapagensis
	Galapagos sea urchin (Eucidaris galapagensis) in the Galapagos
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Order:	Cidaroida
Family:	Cidaridae
Genus:	Eucidaris
Species:	E. galapagensis
Binomial name
	Eucidaris galapagensis;

Eucidaris galapagensis is a species of cidaroid sea urchin that inhabits littoral regions of the Galápagos, Clipperton, and Cocos.[1][2][3] It used to belong to the subspecies E. thouarsii to the slate pencil urchin, but is now recognized as its own species separated by the aforementioned regions.[3]

Diet

Like all urchins these are primarily herbivores, but feed on a wide range of invertebrates.[4] 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.[5] Due to its high intake of coral, it reduces reef growth within the Galapagos.[6]

References

Encyclopedia of Life. "Details for: Eucidaris thouarsii". Encyclopedia of Life. Retrieved 2013-07-23.
Kroh, A.; Mooi, R. "Details for: Eucidaris thouarsii". World Echinoidea Database. Retrieved 2013-07-23.
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.
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.
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 -- Part A: Physiology. 77 (1): 111–112. doi:10.1016/0300-9629(84)90020-3. ISSN 0300-9629.
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.

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[EOL2-1] Encyclopedia of Life. "Details for: Eucidaris thouarsii". Encyclopedia of Life. Retrieved 2013-07-23.

[WED2-2] Kroh, A.; Mooi, R. "Details for: Eucidaris thouarsii". World Echinoidea Database. Retrieved 2013-07-23.

[:0-3] 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.

[4] 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.

[5] 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 -- Part A: Physiology. 77 (1): 111–112. doi:10.1016/0300-9629(84)90020-3. ISSN 0300-9629.

[6] 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.