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Colobocentrotus atratus

Poke (MH)

Helmet Urchin

Multimedia & Additional Resources

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Image:	Adult, Hawai‘i	33KB
Image:	Adult, Hawai‘i	32KB

General Information

COMMON NAMES: Helmet Urchin, Shingle Urchin

TRADITIONAL NAMES: Poke (MH)

GLOBAL DISTRIBUTION: NATIVE e.Africa - Tuamotu - Hawai‘i

COOK ISLANDS STATUS: Native; Marine, near-shore, Surge Zone.

SIGNIFICANCE LIST: ; Nationally endangered (moderately)Medicine

KEY FEATURES: A limpetlike urchin. Dorsal spines are short, stout and polygonal to form a smooth mosaic. Ventral surface is covered with tube-feet and there is a marginal finge of flat spines.

Enlarged Image of 'Colobocentrotus atratus'

Cook Islands Distribution

View Distribution Map

Southern Group: - Makatea: -
RR	MG	AT	MK	MT	AK	PL	TK	MN
-	-	-	-	-	-	-	-	-

Northern Group: Present
TN	MH	RK	PK	NS	SW
-	P				-

Key to Symbols

blank	no data
-	absent	L	localised
X	extinct 'naturally'	W	widespread
XQi	quarantine intercepted	R	recent
XQe	eradicated	?	query preceding category
P	present	T?	taxonomic query
S	seasonal	nn	present, said to have no name
O	occasional	?1	present, name not investigated
++++	very common	?2	presence not verified, no name recorded
+++	common	N/A	absent, name not expected
++	uncommon
+	rare
Cook Islands islands: RR =Rarotonga, MG = Mangaia, AT =‘Ātiu, MK=Ma‘uke, MT=Miti‘āro, AK=Aitutaki, PL=Palmerston, PN=Penrhyn, MN=Manuae, TK=Takūtea, TN=Tongareva (TS=Tongaleva Spoken, TW=Tongareva Written, they say "el" but write "r"), MH=Manihiki, RK=Rakahanga, PK=Pukapuka, NS=Nassau, SW=Suwarrow. After a Polynesian name: ^=orthography query. Countries and other: FIJ=Fiji, WT=Wallis & Futuna, SAM=Samoa, TON=Tonga, NIU=Niue, CK=Cook Islands, CKM=Cook Islands Māori, FP=French Polynesia, AUS=Australs, SOC=Societies, TAH=Tahiti, TUA=Tuamotus, MQS=Marquesas, MNG=Mangareva, PIT=Pitcain group, EAS=Easter Island, HAW=Hawai‘i, NZ=New Zealand, NZM=New Zealand Māori

Scientific Taxonomy

Colobocentrotus atratus (Linnaeus, 1758)
SYNONYMS: Podophora atrata

TAXONOMY: ANIMALIA; ECHINODERMATA; ELEUTHEROZOA; ECHINOIDEA; REGULARIA; Camorodonta; ECHINOMETRIDAE

More Information

SIGNIFICANCE NOTES -
BIODIVERSITY: Nationally endangered (moderately)
POSITIVE SIGNIFICANCE: Medicine. Comments: Used in medicine on Manihiki (GMC90s).

Vouchers & References

Vouchers:
None Recorded.

References:
None recorded.

Data Update History (information):
zTX, zB02, zM02, zD02

Web Resources

Citation Information

McCormack, Gerald (2007) Cook Islands Biodiversity Database, Version 2007.2. Cook Islands Natural Heritage Trust, Rarotonga. Online at http://cookislands.bishopmuseum.org.
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