Echinoidea |
Camarodonta |
Echinometridae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Benthic; depth range 0 - 70 m (Ref. 81020). Tropical
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)
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.
Chiu, S.T. 1990 Age and growth of Anthocidaris crassispina (Echinodermata: Echinoidea) in Hong Kong. Bull. Mar. Sci. 47(1):94-103. (Ref. 85020)
IUCN Red List Status
(Ref. 130435: Version 2025-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
| FishSource |
Tools
More information
PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
Internet sources
Estimates based on models
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.17-0.29; tm=2; tmax=11).
Fishing Vulnerability
Moderate vulnerability (36 of 100).
Price category
Unknown.
