ECHINOMETRA MATHAEI PDF

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. Echinometra mathaeithe burrowing urchinis a species of sea urchin in the family Echinometridae. Bulletin of Marine Science. In other projects Wikimedia Commons. As with other sea urchins, breeding mathzei releasing gametes into the water column. Blainville[1]. Fertilisation is external and the echinopluteus larvae are planktonic.

Physical Description Echinometra mathaei are roughly spherical in shape and exhibit pentamourous symmetry. The colour is quite variable but the test is usually a dark colour. The type locality is Mauritius.

Echinometa commensal shrimpAthanas areteformilives among the spines of this sea urchin [1] and its appearance is mimicked by the mantis shrimpEchinosquilla gueriniiwhich conceals itself in a hole in the rock with only its spiny telson visible.

Echinometra mathaei Blainville[1]. The two sides of the same dried specimen MHNT.

By using this site, you agree to the Terms of Use and Privacy Policy. AgassizEchinometra picta A. From Echino,etra, the free encyclopedia.

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Retrieved from ” https: Mathaei can grow to sizes of up to 85mm diameter, with no sexual dimorphism McClanahan and Muthiga, When these settle on the seabed, they undergo metamorphosis into juvenile sea urchins.

Views Read Edit View history. World Register of Marine Species. This page was last edited on 13 Aprilat Spines on the ventral oral surface of the urchin are smaller 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. Echinometra mathaei are roughly spherical in shape and exhibit pentamourous symmetry.

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AgassizEchinometra heteropora A. Spine colour may vary along the nathaei 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. 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, World Database of Marine Species. Echinometridae Animals described in Most specimens are between 30 and 70mm diameter with mathaie test size of up to 50mm.

Agassiz, Echinometra picta A.

World Echinoidea Database – Echinometra mathaei (Blainville, )

The urchin consists of the main body known as the test, and is surrounded by spines extending outwards in all directions. Echinometra mathaei Echinometra mathaei Scientific classification Kingdom: Kroh A, Mooi R, eds.

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Spines can reach lengths of up to 20mm. 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.

WoRMS – World Register of Marine Species – Echinometra mathaei (Blainville, )

Colour The test of E. Journal of Experimental Marine Biology and Ecology. Articles with ‘species’ microformats.

Echinometra mathaei grows to mxthaei test diameter of about 5 centimetres 2. 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.

It occurs in shallow waters in the Indo-Pacific region. 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. Its natural predators are mostly finfish but there is also some predation by brittle stars ecchinometra gastropod molluscs.

Agassiz, Echinometra heteropora L.

Spine colour varies with individuals showing spines of various shades of green, grey and purple. Echinometra mathaei with pale banding around the base of spines.