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Spionida |
Spionidae
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
; গভীরতার পরিসীমা 10 - 189 m (Ref. 112705). Tropical
Arctic, Atlantic, the Mediterranean and Northeast Pacific. Polar to tropical.
Length at first maturity / আকৃতি / ওজন / Age
Maturity: Lm ? range ? - ? cm
Tubiculous (Ref. 112705). Found along the sub-littoral zone, in muddy bottoms associated with organic pollutants. A microvore that feeds on organic detritus (Ref. 96352); a surface deposit feeder (based from the feeding ecology of the family Spionidae; Ref. 87179).
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
Members of the class Polychaeta are mostly gonochoric (sexual). Mating: Females produce a pheromone attracting and signalling the males to shed sperm which in turn stimulates females to shed eggs, this behavior is known as swarming. Gametes are spawned through the metanephridia or body wall rupturing (termed as "epitoky", wherein a pelagic, reproductive individual, "epitoke", is formed from a benthic, nonreproductive individual, "atoke"). After fertilization, most eggs become planktonic; although some are retained in the worm tubes or burrowed in jelly masses attached to the tubes (egg brooders). Life Cycle: Eggs develop into trocophore larva, which later metamorph into juvenile stage (body lengthened), and later develop into adults.
Salazar-Vallejo, S.I. 1996. (Ref. 7866)
IUCN Red List Status (Ref. 130435)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
| FishSource |
হাতিয়ার
আরো তথ্য
Age/Size
বৃদ্ধি
Length-weight
Length-length
বহিঃ অঙ্গ সংস্থান
শুককীট
প্রাচুর্য
ইন্টারনেট সুত্র
Estimates based on models
Price category
Unknown.
