Riftia pachyptila

Riftia pachyptila   Jones, 1981


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

Polychaeta | Sabellida | Siboglinidae

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

Sessile; depth range 2564 - 2673 m (Ref. 7675).  Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Eastern Central Pacific.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 200 cm TL male/unsexed; (Ref. 99941); max. published weight: 650.00 g (Ref. 99323)

Biology     Glossary (e.g. epibenthic)

Depth range based on a locality (Ref. 7675); to be replaced with a better reference. The tube length and diameter can measure up to 3 m and 5 m, respectively; but the length of the worm in the 3 m tube is only 1 m (Ref. 99323). Abyssal (Ref. 19). It lacks a functional digestive system and derives its nutrition from vent plumes through an endosymbiotic relationship with chemoautotrophic bacteria stored in a specialized organ called a trophosome (Ref. 99323).

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

Spawning is intermittent, not continuous and lasts an hour; release of gametes are propelled upward by withdrawal of the worm into its tube. Neutrally buoyant sperm bundles are expelled forcefully enough to be dispersed over a field of tubeworms; the sperm bundles swim and attach to females, somehow mediating a spawning response in the female; fertilization occurs internally immediately before spawning or externally (within the vestimental chamber?) just after release of the eggs; accumulated eggs are forcefully ejected into the water column where, negatively buoyant, they spend a short period near the site of release; advective conditions of the turbulent, warm-water vent environment disperse gametes and developing larvae away from the adult population.

Main reference References | Coordinator | Collaborators

Andersen, A.C., S. Hourdez, B. Marie, D. Jollivet, F.H. Lallier and M. Sibuet. 2004. (Ref. 7667)

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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Ecology
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Length-weight rel.
Length-length rel.
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Abundance
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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): 1.7 - 2.1, mean 1.8 (based on 76 cells).
Fishing Vulnerability (Ref. 71543): Very high vulnerability (90 of 100).
Price category (Ref. 80766): Unknown.

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