Found subtidally (Ref. ). Inhabits hard substrates by boring on rocks in shallow waters (Ref. ). It is also found on fore-reefs (Ref. ). Feeds on. Image of Echinometra mathaei. Echinometra mathaei Trusted. Creative Commons Attribution Non Commercial Share Alike (CC BY-NC-SA Physical Description. Echinometra mathaei are roughly spherical in shape and exhibit pentamourous symmetry. The urchin consists of the main body known as .
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Because of its burrowing activities, Echinometra mathaei causes bioerosion of coral reefs. When these settle on the seabed, they undergo metamorphosis into juvenile sea urchins. Most specimens are between 30 and 70mm diameter with a test size of up to 50mm. Spine colour varies with individuals showing spines of various shades of green, grey and purple. World Register of Marine Species.
Echinometra mathaei | Jake Horton
Spines on the ventral oral surface of the urchin are mwthaei in size and are parted in the centre where the feeding appendage occurs, and spines are similarly smaller on the aboral surface where they give way to the anus. AgassizEchinometra heteropora A.
AgassizEchinometra picta A.
Echinometra mathaei grows to a test diameter of about 5 centimetres 2. From Wikipedia, the free encyclopedia. Physical Description Echinometra mathaei are roughly spherical in shape and exhibit pentamourous symmetry. Retrieved from ” https: Its natural predators are mostly finfish but there is also some predation by brittle stars and gastropod molluscs. The two sides of the same dried specimen MHNT. Mathaei can grow to sizes of up to 85mm diameter, with no sexual dimorphism McClanahan and Muthiga, Spine colour may vary along the length of spine, with some spines appearing pale purple at the base and turning darker towards the tip, or green along the length with white tips.
It has been found that in areas where heavy fishing takes place, the number of urchins is increased because their natural predators are less abundant and as a consequence, greater damage to the reef takes place.
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Mathaei can be distinguished from other urchin species by the pale ring at the base of each spine, a unique characteristic of the species Boyer, echunometra Echinometra mathaei Blainville. Echinometra mathaeithe burrowing urchinis a species of sea urchin in the family Echinometridae. Colour The test of E.
Agassiz, Echinometra picta A.
The urchin consists of the main body known as the test, echinomeetra is surrounded by spines extending outwards in all directions. Echinometra mathaei with pale banding around the base of spines.
Fertilisation is external and the echinopluteus larvae are planktonic. Echinometra mathaei Echinometra mathaei Scientific classification Kingdom: Bulletin of Marine Science. Echinometra mathaei uses its spines and teeth part of the mouthparts known as Aristotle’s lantern to dig itself into the basaltic and calcareous rock where it lives.
Views Read Edit View history. Journal of Experimental Marine Biology and Ecology. It occurs in shallow waters in the Indo-Pacific region. A commensal shrimpAthanas areteformilives among the spines of this sea urchin  and its appearance is mimicked by the mantis shrimpEchinosquilla gueriniiwhich conceals itself in a hole in the rock with only its spiny telson visible.
World Echinoidea Database – Echinometra mathaei (Blainville, )
Spines can reach lengths of up to 20mm. Blainville. The type locality is Mauritius.
As with other sea urchins, breeding involves releasing gametes into the water column. In other projects Wikimedia Commons.
Echinometridae Animals described in World Database of Marine Species. Echinometra mathaei are roughly spherical echinomstra shape and exhibit pentamourous symmetry. This page was last edited on 13 Aprilat The spines are sometimes green and purple with purple tips or entirely green with purple tips but this sea urchin can be distinguished from other species by a characteristic pale ring at the base of each spine.