Echinoidea |
Diadematoida |
Diadematidae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Benthic; depth range 2 - 50 m (Ref. 100185). Subtropical
Indo-West Pacific. Tropical to temperate.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Maximum depth from Ref. 102372. Found on fringing reefs where brown algae and coralline algae abound. Species is abundant in depressions and crevices among sponges and other sessile animals. Light-sensitive; forages through the night. Feeds on a wide range of algal species as well as bryozoans and sponges. Also associated with amphipods and chitons (Ref. 102372).
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.
Gardner, J.P.A., M.J. Curwen, J. Long, R.J. Williamson and A.R. Wood 2006 Benthic community structure and water column characteristics at two sites in the Kermadec Islands Marine Reserve, New Zealand. New Zealand Journal of Marine and Freshwater Research 40:179-194. (Ref. 88938)
IUCN Red List Status
(Ref. 130435: Version 2025-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
Tools
More information
Trophic EcologyFood items (preys)
Diet composition
Food consumption
Predators
Population dynamicsGrowthMax. ages / sizesLength-weight rel.Length-length rel.Length-frequenciesMass conversionAbundance Life cycleReproductionMaturityFecunditySpawningEggsEgg developmentLarvae PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
Internet sources
Estimates based on models
Preferred temperature
(Ref.
115969): 14.4 - 24.9, mean 18.2 (based on 192 cells).
