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purple urchin
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Common names:
[No common name]
Occurrence:
native
Salinity:
marine
Abundance:
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Ref:
Importance:
|
Ref:
Aquaculture:
never/rarely
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Ref:
Regulations:
no regulations
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Ref:
Uses:
no uses
Comments:
Known from Cook's Inlet (Ref. 865). C: Refs. 95072, 865.
National Checklist:
Country Information:
National Fisheries Authority:
http://www.state.ak.us/local/akpages/FISH.GAME/adfghome.htm
Occurrences:
OccurrencesPoint map
Main Ref:
Lambert, P. and W.C. Austin, 2007
National Database:
Length at first maturity / Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm ?  range ? - ? cm Max length : 8.5 cm WD con đực/không giới tính; (Ref. 865)
It is found on rocks from the low intertidal to a depth of 10 meters (Ref. 865).
Life cycle and mating behavior Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng
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.