Brissus gigas

Brissus gigas
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Order:	Spatangoida
Family:	Brissidae
Genus:	Brissus
Species:	B. gigas
Binomial name
	Brissus gigas; H.B. Fell, 1947

Brissus gigas, also known as the giant heart urchin,[1] is a species of sea urchins of the family Brissidae. Their armour is covered with spines. Brissus gigas was first scientifically described in 1947 by H.B. Fell.[2]

Description

Most documented specimens of Brissus gigas range between 50–190mm in length, however the largest specimen of Brissus gigas was collected off the coast of Great Mercury Island in 2009, measuring 193mm.[1]

Distribution

Specimens of this species have been found around the north and north-east coast of the North Island, from Manawatāwhi / Three Kings Islands down to Great Mercury Island.[1] Brissus gigas is found in sandy or muddy burrows close to coasts, in the sublittoral zone.[1] Between 1982-3, deoxidisation from a plankton bloom of Cerataulina pelagica caused mass deaths of the species in the Hauraki Gulf.[1]

References

Cameron, Marcus J. (2010). "[SHORT NOTE]: THE LARGEST RECORDED SPECIMEN OF THE GIANT HEART URCHIN, BRISSUS GIGAS (ECHINOIDEA: BRISSIDAE)". Records of the Auckland Museum. 47: 89–92. ISSN 1174-9202.
Kroh, A. (2010). Brissus gigas (H.B. Fell, 1947). In: Kroh, A. & Mooi, R. (2010) World Echinoidea Database. at the World Register of Marine Species.

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[Cameron-1] Cameron, Marcus J. (2010). "[SHORT NOTE]: THE LARGEST RECORDED SPECIMEN OF THE GIANT HEART URCHIN, BRISSUS GIGAS (ECHINOIDEA: BRISSIDAE)". Records of the Auckland Museum. 47: 89–92. ISSN 1174-9202.

[2] Kroh, A. (2010). Brissus gigas (H.B. Fell, 1947). In: Kroh, A. & Mooi, R. (2010) World Echinoidea Database. at the World Register of Marine Species.