Polychaeta |
Spionida |
Spionidae
Environment: milieu / climate zone / εύρος βάθους / distribution range
Οικολογία
; Υφάλμυρο; εύρος βάθους 200 - 300 m (Αναφ. 75621). Tropical
Arctic, Northeast Atlantic and Indo-Pacific.
Length at first maturity / Μέγεθος / Weight / Age
Γεννητική Ωρίμανση: Lm ?  range ? - ? cm Max length : 3.0 cm TL αρσενικό/απροσδιόριστο; (Αναφ. 75621)
Depth and length based on occurrence record; to be replaced with better reference. Found in estuarine and inshore areas, in substrates of mud, silt, and fine sand (Ref. 96352). Discretely mobile. Known as a suspension feeder (Ref. 75621). A microvore that feeds on organic detritus (Ref. 96352).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Eggs | Γονιμότητα | 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.
López-Jamar, E., G. González and J. Mejuto 1986 Temporal changes of community structure and biomass in two subtidal macroinfaunal assemblages in La Coruña bay, NW Spain. Hydrobiologia 142:137-150. (Αναφ. 2778)
IUCN Red List Status
(Αναφ. 130435: Version 2025-1)
CITES status (Αναφ. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
| FishSource |
Εργαλεία
Περισσότερες πληροφορίες
Population dynamicsΑύξησηMax. ages / sizesLength-weight rel.Length-length rel.Length-frequenciesMass conversionΑφθονία Life cycleΑναπαραγωγήΓεννητική ΩρίμανσηΓονιμότηταΓεννοβολίαEggsEgg developmentLarvae PhysiologyΚατανάλωση οξυγόνου
Human RelatedStamps, coins, misc.
Διαδικτυακές πηγές
Estimates based on models
Preferred temperature
(Ref.
115969): 3.8 - 10.1, mean 6.7 (based on 114 cells).
Fishing Vulnerability
Low vulnerability (10 of 100).
Price category
Unknown.