Magelona johnstoni

Magelona johnstoni   Fiege, Licher & Mackie, 2000

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Classification / Names Populärnamn | synonymer | CoL | ITIS | WoRMS

Polychaeta | Canalipalpata | Magelonidae

Environment: milieu / climate zone / djupintervall / distribution range Ekologi

; brackvatten; djupintervall 2 - 88 m (Ref. 125326).  Subtropical; 55°N - 36°N, 9°W - 34°E

Distribution Länder | FAO områden | Ekosystem | Förekomster | Utplanteringar

Northeast Atlantic and the Mediterranean.

Length at first maturity / Size / Weight / Age

Könsmognad: Lm ?  range ? - ? cm Max length : 17.0 cm TL hane/ej könsbestämd; (Ref. 7882)

Biologi     Ordlista (t.ex. epibenthic)

Species' maximum length from the Belgian part of the North Sea (Ref. 7882). Inhabits the subtidal regions (Ref. 96507); in the near-coastal zone. A digging bristle worm found in fine sediment with a 10-20% mud content; is absent in coarse-grained sediment (Ref. 7882). Also found in areas influenced by outflows from estuaries (Ref. 96507).

Life cycle and mating behavior Könsmognad | Reproduktion | Lek | 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.

Main reference referenser | Koordinator | Medarbetare

Martin, D. and J. Gil 2010 Checklist of class Polychaeta (Phylum Annelida). pp. 199-236 In Coll, M., et al., 2010. The biodiversity of the Mediterranean Sea: estimates, patterns, and threats. PLoS ONE 5(8):36pp. (Ref. 85340)

IUCN Red List Status (Ref. 130435: Version 2025-1)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless

Human uses


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Ytterligare information

Trophic Ecology
Food items (preys)
Födosammansättning
Födointag
Predatorer
Ekologi
Ekologi
Population dynamics
Tillväxt
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundans
Life cycle
Reproduktion
Könsmognad
Fecundity
Lek
Eggs
Egg development
Larvae
Distribution
Länder
FAO områden
Ekosystem
Förekomster
Utplanteringar
Physiology
Syreförbrukning
Human Related
Stamps, coins, misc.
Outreach
Medarbetare
Taxonomy
Populärnamn
synonymer
Morfologi
Bilder
referenser
referenser

Internet-källor

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, sök) | Zoological Record

Estimates based on models

Fishing Vulnerability (Ref. 71543): Low vulnerability (10 of 100).

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