Echinoidea |
Arbacioida |
Arbaciidae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Benthic. Tropical
Southeast Pacific: Peru and Chile.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm
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.
Taylor, M.H., M. Wolff, F. Vadas and C. Yamashiro 2008 Trophic and environmental drivers of the Sechura Bay ecosystem (Peru) over an ENSO cycle. Helgol Mar Res 62 (Suppl 1):S15-S32. (Ref. 92517)
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
