Polychaeta |
Spionida |
Spionidae
Environment: milieu / climate zone / गहराई सीमा / distribution range
पारिस्थितिकी
; खारा; गहराई सीमा 14 - 18 m (संदर्भ 112705). Temperate
Atlantic Ocean and the Arctic.
Length at first maturity / आकार / Weight / Age
परिपक्व अवधि: Lm ? range ? - ? cm
Found in littoral and sublittoral sediments (Ref. 1314). An infaunal species in sandy substrate, commonly on Zostera sp. beds (Ref. 95819). In the Vainameri, north-eastern Baltic Sea, inhabits rocky, silty sand and clay sediment types (Ref. 95753), and under Furcellaria lumbricalis mats (Ref. 95891). An opportunistic species linked to the reduced survival of native benthic species in the Baltic Sea (Ref. 95891).
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.
Hill, M., R. Baker, G. Broad, P.J. Chandler, G.H. Coop, J. Ellis, D. Jones, C. Hoyland, I. Laing, M. Longshaw, N. Moore, D. Parrott, D. Pearman, C. Preston, R.M. Smith and R. Waters 2005 Audit of Non-native Species in England. English Nature Research Reports Number 662. 82 p. (संदर्भ 1314)
IUCN Red List Status
(संदर्भ 130435: Version 2025-1)
CITES status (संदर्भ 108899)
Not Evaluated
CMS (संदर्भ 116361)
Not Evaluated
Threat to humans
Human uses
| FishSource |
साधन
अधिक जानकारी
Life cycleपुनरुत्पत्तिपरिपक्व अवधिFecundityमछलीऔ का अंडे देनाEggsEgg developmentLarvae PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
इंटरनेट स्रोत
Estimates based on models
Price category
Unknown.
