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Holasteroida |
Pourtalesiidae
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
. Deep-water
Southwest Pacific: New Zealand.
Length at first maturity / আকৃতি / ওজন / Age
Maturity: Lm ? range ? - ? cm
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
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.
Fell, H.B. 1948. (Ref. 88950)
IUCN Red List Status (Ref. 130435)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
হাতিয়ার
আরো তথ্য
Age/Size
বৃদ্ধি
Length-weight
Length-length
বহিঃ অঙ্গ সংস্থান
শুককীট
প্রাচুর্য
ইন্টারনেট সুত্র
Estimates based on models
