Lamellibrachia barhami

Lamellibrachia barhami is a large pogonophore.^[1]

Description

Its tentacular crown is formed of several, fused, horseshoe-shaped tentacle lamellae. The second segment has two body folds, near which open the genital ducts. The trunk, which comprises 89 per cent of the total body length, is undifferentiated. The true metasoma, is without setae. The heart is a simple muscular elaboration of the anterior end of the ventral blood vessel. The brain is large, and from it arises a pair of intra-epidermal nerve cords which extend the full length of the vestimental region; thereafter they join and form the a nerve cord of the trunk. Associated with the brain and the nerve cords are the dorsal tubes.^[1]

References

Further reading

• Hejnol, Andreas; Miyamoto, Norio; Shinozaki, Ayuta; Fujiwara, Yoshihiro (2013). "Neuroanatomy of the Vestimentiferan Tubeworm Lamellibrachia satsuma Provides Insights into the Evolution of the Polychaete Nervous System". PLoS ONE. 8 (1): e55151. ISSN 1932-6203. PMC 3553155 . PMID 23372830. doi:10.1371/journal.pone.0055151. 
• Kiel, Steffen, ed. The Vent and Seep Biota: Aspects from Microbes to Ecosystems. Vol. 33. Springer, 2010.
• MacLeod, C. J., Paul A. Tyler, and C. L. Walker, eds. "Tectonic, magmatic, hydrothermal and biological segmentation of mid-ocean ridges." Geological Society of London, 1996.
• Beesley, Pamela L., Graham JB Ross, and Christopher J. Glasby, eds.Polychaetes & allies: the southern synthesis. Vol. 4. CSIRO publishing, 2000.
• Van Dover, Cindy. The ecology of deep-sea hydrothermal vents. Princeton University Press, 2000.
• Sigvaldadóttir, Elín, Andrew SY Mackie, and Gudmundur V. Helgason, eds.Advances in Polychaete Research. Vol. 170. Springer, 2003.

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