Polychaeta | Sabellida
Andersen, A.C., S. Hourdez, B. Marie, D. Jollivet, F.H. Lallier and M. Sibuet. 2004. (Ref. 7667)
Size / Weight / Age
Max length : 200 cm TL male/unsexed; (Ref. 99941); max. published weight: 650.00 g (Ref. 99323)
Sessile; depth range 2564 - 2673 m (Ref. 7675)
Climate / Range
Eastern Central Pacific.
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).
IUCN Red List Status (Ref. 114614)
CITES status (Ref. 94142)
Threat to humans
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Estimation of some characteristics with mathematical models