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Riftia pachyptila   Jones, 1981


Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Riftia pachyptila   AquaMaps   Data sources: GBIF OBIS
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Riftia pachyptila
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drawing shows typical fish in this Family.

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

Polychaeta | Sabellida | Siboglinidae

Environment / Climate / 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). 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 (Ref. 99939).

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. 115185)

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses


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More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Common names
Synonyms
Predators
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Morphology
Larvae
Abundance

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | GenBank (genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | ispecies | PubMed | Scirus | Tree of Life | uBio | uBio RSS | Wikipedia (Go, Search) | Zoological Record

Estimates of some properties based on models

Price category (Ref. 80766)
Unknown