Heliocidaris crassispina   (Agassiz, 1864)

Purple sea urchin
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Heliocidaris crassispina

Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Echinoidea | Camarodonta | Echinometridae

Environment: milieu / climate zone / depth range / distribution range Ecology

Benthic; depth range 0 - 70 m (Ref. 81020).  Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Northwest Pacific: Hong Kong.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 7.7 cm WD male/unsexed; (Ref. 126588); max. reported age: 11 years (Ref. 126586)

Biology     Glossary (e.g. epibenthic)

Found on shallow waters (<5 meters), in intertidal pools (Ref. 124789) with rocky substrate (Ref. 119717). Occur on both sheltered and exposed shores. Clustered in rock crevices, or at the base and undersides of boulders. Aggregation suggests adaptive behavior to wave turbulence (Ref. 127097). An opportunistic feeder, but feeds mainly on algae (Ref. 125532).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Members of the class Echinoidea are gonochoric. Fertilization is external. Brooding is common, eggs are held either on the peristome, around the periproct or deep into the concavities on the petaloids. Life cycle: Embryos develop into planktotrophic larvae (echinoplateus) and live for several months before they sink to the bottom using their tube feet to adhere on the ground where they metamorphose into young urchins.

Main reference References | Coordinator | Collaborators

Chiu, S.T. 1990. (Ref. 85020)

IUCN Red List Status (Ref. 130435)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses


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Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Common names
Synonyms
Predators
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Morphology
Larvae
Abundance
References
Mass conversion
Collaborators
Pictures

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates based on models

Resilience (Ref. 69278): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.17-0.29; tm=2; tmax=11).
Price category (Ref. 80766): Unknown.