Polychaeta |
Spionida |
Spionidae
Environment: milieu / climate zone / गहराई सीमा / distribution range
पारिस्थितिकी
; गहराई सीमा 14 - 1738 m (संदर्भ 112705). Tropical
Arctic, Atlantic, the Mediterranean and Indo-Pacific. Tropical to polar.
Length at first maturity / आकार / Weight / Age
परिपक्व अवधि: Lm ?  range ? - ? cm
Maximum depth from Ref. 116516. Tubiculous (Ref. 112705). Found in terrigenous coastal muds (Ref. 2780). A surface deposit feeder (Ref. 96501). Discretely mobile and tentaculate (Ref. 125872).
Life cycle and mating behavior
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | Eggs | Fecundity | Larvae
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. and M.H. Londoño-Mesa. 2004. (संदर्भ 8159)
IUCN Red List Status
(संदर्भ 130435: Version 2024-2)
CITES status (संदर्भ 108899)
Not Evaluated
CMS (संदर्भ 116361)
Not Evaluated
Threat to humans
Human uses
| FishSource |
साधन
अधिक जानकारी
Population dynamicsबाढ़Max. ages / sizesLength-weight rel.Length-length rel.Length-frequenciesMass conversionबहुतायत Life cycleपुनरुत्पत्तिपरिपक्व अवधिFecundityमछलीऔ का अंडे देनाEggsEgg developmentLarvae PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
इंटरनेट स्रोत
Estimates based on models
Preferred temperature
(Ref.
115969): 1.6 - 12, mean 5.1 (based on 2363 cells).
Price category
Unknown.