Phascolosoma agassizii, Agassiz'z peanut worm
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Phascolosoma agassizii   Keferstein, 1866

Agassiz'z peanut worm

Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Phascolosoma agassizii  AquaMaps  Data sources: GBIF OBIS
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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Not assigned | Sipuncula | Phascolosomatidae

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

Benthic; depth range 0 - 5 m (Ref. 1815).  Temperate

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Indo-Pacific and the Mediterranean: Korean Peninsula.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 4.0 cm TRKL male/unsexed; (Ref. 1815)

Short description Morphology

Comparatively large animals of grayish yellow color. Body cylindrical. Trunk region 0.4 - 4 cm long. Introvert almost as long as trunk region. Entire body surface densely set with large (0.06 - 0.08 cm) dome-shaped black papillae. Papillae especially numerous on terminal and anal shields. Cephalon bear-ing crown of 21-29 tentacles in horseshoe-like arrangement around heart-shaped nuchal organ. Behind cephalon, introvert bearing specialized cuticular appendages (scalids), arranged into 15-30 circles. Two ventral and two dorsal retractors of introvert. Ventral retractors anchored in posterior third of trunk. Contractile vessel simple, with no lateral branches. Intestine with 10-18 loops, in dependence on animal size. Longitudinal musculature of body wall divided into pronounced, isolated longitudinal bands. Spindle-shaped muscle fastened at terminal end of trunk; 1-3 fixing muscles. Anus located somewhat in front of or level with nephrophores. Wing muscles well-developed. Rectal diverticulum absent. 2 nephridia fastened to body wall along 1/3 of their length via thin mesenterial filaments. Nephridiums 30 - 50 percentage as long as trunk (Ref. 1815).

Biology     Glossary (e.g. epibenthic)

Intertidal and subtidal on vegetation (Ref. 1815). Depth based on occurrence (Ref. 1815); to be replaced with better reference. Subtidal (Ref. 1815).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference References | Coordinator | Collaborators

Morozov, T.B. and A.V. Adrianov 2002 Fauna of Sipunculans (Sipuncula) of Vostok Bay, Sea of Japan. Russian Journal of Marine Biology 28(6):365-370. (Ref. 1815)

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

Human uses


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Food consumption
Predators
Ecology
Ecology
Population dynamics
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Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
Life cycle
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Maturity
Fecundity
Spawning
Eggs
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Larvae
Distribution
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FAO areas
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Introductions
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Oxygen consumption
Human Related
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References

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): 7.7 - 28.8, mean 21.6 (based on 2164 cells).
Fishing Vulnerability (Ref. 71543): Low vulnerability (10 of 100).
Price category (Ref. 80766): Unknown.

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