Cratena peregrina
Cratena | |
---|---|
Cratena capensis | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
(unranked): | clade Heterobranchia clade Euthyneura |
Superfamily: | Aeolidioidea |
Family: | Facelinidae |
Subfamily: | Crateninae |
Genus: | Cratena |
Species: | C. peregrina |
Binomial name | |
Cratena peregrina (Gmelin, 1791) | |
Synonyms | |
Cuthona peregrina (Gmelin, 1791) Doris peregrina Gmelin, 1791 (original combination) Hervia costai Haefelfinger, 1961 (synonym) |
Cratena peregrina, commonly called the "pilgrim hervia", is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Facelinidae.[1]
Description
The pilgrim hervia is small aeolid sea slug, its average size is between 3 and 5 cm.[2] The body is thin and slender, with a long sharply pointed tail. Its body coloration is milky white with 8 to 10 clusters of dorsal cerata which can be bright red, purple, brown or blue, with the tips coloured in luminescent blue. Those cerata act like gills, and each one contains a terminal outgrowth of the digestive gland, a diverticulum.
The head, which is the same colour as the body, has a pair of bright orange rhinophores, and with two whitish long buccal tentacles, which look like horns.
Distribution & habitat
This species occurs in the Mediterranean Sea and in the eastern Atlantic Ocean from the Channel south to Senegal.[3] This sea slug prefers to live on rocky bottoms and slopes in clear and well-oxygenated water, between 5 and 50 m in depth.[3]
Biology
The pilgrim hervia feeds on hydroids in the genus Eudendrium.[2]
References
- ↑ Gofas, S. (2014). Cratena peregrina (Gmelin, 1791). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=146862 on 2014-09-10
- 1 2 http://www.seaslugforum.net/find/cratpere
- 1 2 http://doris.ffessm.fr/fiche2.asp?fiche_numero=453
External links
Wikimedia Commons has media related to Cratena. |