Scalibregma inflatum
| Scalibregma inflatum | |
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.JPG)
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| Scalibregma inflatum under stereo microscope | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Annelida |
| Class: | Polychaeta |
| Order: | Opheliida |
| Family: | Scalibregmatidae |
| Genus: | Scalibregma |
| Species: | S. inflatum
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| Binomial name | |
| Scalibregma inflatum Rathke, 1843
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Scalibregma inflatum, also known as T headed worm, is a burrowing marine polychaete. It is a cosmopolitan species that can be found from the Arctic to Antarctica, although most probably several species are confounded.[1]
Morphology[edit]
Up to 6 cm long with an orange body with 50–60 segments. Body is composed of a wide anterior part of segments 15–17 and a long slim posterior part. Prostomium rectangular shaped with two lateral horns making it appear as a T. peristomium without chaetae. Parapodia small and oval at first increasing in size from segments 16–18. Four pairs of branching gills dorsally on 2-5 segment with chaetae.[2][3]
Ecology[edit]
Mainly found in muddy substrate, but can also be found in sand and between stones and shells. S. inflatum is a deposit feeder. During the spawning period S. inflatum undergoes epitoky.[2][3]
Systematics[edit]
Scalibregma inflatum is found within the polychaete family Scalibregmatidae.[4] The genus Scalibregma is composed of 15 different species.[5]
References[edit]
- ^ Bakken, T.; E. Oug; J.A. Kongsrud (2014). "Occurrence and distribution of Pseudoscalibregma and Scalibregma (Annelida, Scalibregmatidae) in the deep Nordic Seas, with the description of Scalibregma hanseni". Zootaxa. 3753 (2): 101–117. doi:10.11646/zootaxa.3753.2.1. hdl:11250/217143. PMID 24872283.
- ^ a b Kirkegaard, J. B. (1996). Havbørsteorme II. Danmarks Fauna. Vol. 86. pp. 241–242.
- ^ a b Hayward, P. J. & Ryland, J. S. (1995). Handbook of the Marine Fauna of North-West Europe. Oxford University Press. p. 224.
- ^ Bellan, G. (2008). Read G, Fauchald K (eds.). "Scalibregma inflatum Rathke, 1843". World Polychaeta database. World Register of Marine Species. Retrieved 22 December 2016.
- ^ Bellan, G. (2008). Read G, Fauchald K (eds.). "Scalibregma Rathke, 1843". World Polychaeta database. World Register of Marine Species. Retrieved 22 December 2016.