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Loimia medusa, Medusa worm

Common name (e.g. turtle)

Genus + Species (e.g. Caretta caretta)

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Loimia medusa   (Savigny, 1818)

Medusa worm

Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Loimia medusa  AquaMaps  Data sources: GBIF OBIS
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No photo available for this species.
No drawings available for Terebellidae.

Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Polychaeta | Terebellida | Terebellidae

Environment: milieu / climate zone / depth range / distribution range Ecology

Reef-associated; brackish; depth range 10 - 75 m (Ref. 112705).  Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Indo-Pacific and Western Central Atlantic. Tropical and subtropical.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 25.0 cm BL male/unsexed; (Ref. 78042)

Biology     Glossary (e.g. epibenthic)

Inhabits Halodule wrightii beds (Ref. 83353). Also found in tide pools, deep estuarine channels and rubble in bays and seas. In protected areas where organic detritus is substantial and frequently replenished. Builds tube from sand and gravel or simply protect their body within vertical holes or in reef crevices (Ref. 107245). Sessile tentaculate suspension and surface deposit feeder (Ref. 125928).

Life cycle and mating behavior Maturity | Reproduction | Spawning | 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 References | Coordinator | Collaborators

Salazar-Vallejo, S.I. 1996. (Ref. 7866)

IUCN Red List Status (Ref. 130435: Version 2024-2)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses


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Internet sources

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, Search) | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 18.5 - 28.3, mean 26.4 (based on 1642 cells).
Vulnerability (Ref. 71543): Low vulnerability (13 of 100).
Price category (Ref. 80766): Unknown.

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