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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Most specimens are between 30 and 70mm diameter with a test size of up to 50mm. When these settle on the seabed, they undergo metamorphosis into juvenile sea urchins.
Agassiz, Echinometra heteropora L. Kroh A, Mooi R, eds. Agassiz, Echinometra picta A. 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. Echinometra mathaei grows to a test diameter of about 5 centimetres 2.
Echinometra mathaei Echinometra mathaei Scientific classification Kingdom: World Database of Marine Species. The colour is quite variable but the test is usually a dark colour. Its natural predators are mostly finfish but there is also some predation by brittle stars and gastropod molluscs. It occurs in shallow waters in the Indo-Pacific region. 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.
As with other sea urchins, breeding involves releasing gametes into the water column. World Register of Marine Species. Bulletin of Marine Science.
Echinometra mathaei with pale banding around the base of spines. Echinometra mathaei Blainville.
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Spine colour varies with individuals showing spines of various shades echinomtra green, grey and purple. This page was last edited on 13 Aprilat In other projects Wikimedia Commons.
The type locality is Mauritius. Mathaei can grow to sizes of up to 85mm diameter, with no sexual dimorphism McClanahan and Muthiga, The two sides of the same dried specimen MHNT.
AgassizEchinometra picta A. 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, )
AgassizEchinometra heteropora A. Fertilisation is external and the echinopluteus larvae are planktonic. Mathaei can be distinguished from other urchin species by the pale ring at the base of each spine, a unique characteristic echonometra the species Boyer, Articles with ‘species’ microformats.
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 echionmetra of each spine.
From Wikipedia, the free encyclopedia.
A commensal mathzeiAthanas areteformilives among the spines of this sea urchin  and its appearance is mimicked by echinometa mantis shrimpEchinosquilla gueriniiwhich conceals itself in a hole in the rock with only its spiny telson visible. Journal of Experimental Marine Biology and Ecology. Echinometra mathaei are roughly spherical in shape and exhibit pentamourous symmetry. Because of its burrowing activities, Echinometra mathaei causes bioerosion of coral reefs.