Janua pagenstecheri
| Janua pagenstecheri | |
|---|---|
| Scientific classification | |
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| Subgenus: | Dexiospira
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| Species: | J. pagenstecheri
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| Binomial name | |
| Janua pagenstecheri (Quatrefages, 1865)
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| Synonyms [1] | |
|
Spirorbis pagenstecheri Quatrefages, 1866 | |
Janua pagenstecheri is a species of marine polychaete. It is widely distributed around the British Isles and across north-western Europe, and has been described as "probably the commonest spirorbid in the world".[2]
Janua pagenstecheri lives attached to
colour morphs: one bright yellow, which occurs in shallow water, and one much paler, which occurs in deeper water.[3] It differs from Spirorbis spirorbis in that S. spirorbis retains its eggs in the tube, while J. pagenstecheri incubates them a few at a time in its operculum, and grows a new cap for the operculum after releasing the embryos.[4]
The species was described by
University of Heidelberg and the first director of the Hamburg natural history museum.[5]
References
- ^ WoRMS (2010). K. Fauchald (ed.). "Janua (Dexiospira) pagenstecheri (de Quatrefages, 1865)". World Polychaeta database. World Register of Marine Species. Retrieved August 12, 2010.
- ^ ISBN 978-0-521-46819-0.
- ^ a b Ken Neal (2004). "Janua pagenstecheri. A bristleworm". Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme. Marine Biological Association of the United Kingdom. Retrieved August 12, 2010.
- ISBN 978-0-412-33760-4.
- ^ Hans G. Hansson. "Dr. Heinrich Alexander Pagenstecher". Biographical Etymology of Marine Organism Names. Göteborgs Universitet. Archived from the original on October 27, 2010. Retrieved August 12, 2010.