Magnificent star snails
| Magnificent star snails | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Glossodoris atromarginata : on the right the two rhinophores (antennae), in the middle the anus with gill rim |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Chromodorididae | ||||||||||||
| Bergh , 1891 |
The magnificent slugs ( Chromodorididae ) are a family of slugs in the subordination of nudibranchs . These are mostly larger, exclusively marine, caseless snail species that mainly eat sponges .
features
The Chromodorididae are often elongated, relatively narrow and often have high feet. The smooth, soft coat is strikingly colored in many cases and usually has no sclerites. The edge of the back can be narrow or wide. The two lamellar antennae on the head, the rhinophores , and the usually simply articulated gills are usually not elevated. The gills around the anus on the back can be retracted in gill sheaths. The snails have a radula with many teeth, usually without central teeth, sometimes with a small, flat central tooth. The posterior teeth are hook-shaped, two-pointed or saw blade-shaped. The inner mouth, which separates the foregut and midgut, is provided with simple or multi-lobed rods. The very long, tortuous spermatic duct ends in an unarmed penis. Shedding of the regrowing penis has been observed in some species. The anatomy of the female genital organs (vagina, bursa and receptaculum seminis) determines the species.
The Chromodorididae mainly eat sponges .
Like other star snails, the Chromodorididae are hermaphrodites and mate with each other. They lay their eggs in egg strings from which numerous Veliger larvae hatch, feed on plankton and after a long pelagic phase they metamorphose into small star snails .
Systematics
According to Bouchet and Rocroi (2005), the Chromodorididae family is one of four families in the Doridoidea superfamily . According to Rebecca F. Johnson (2010) the genera Cadlina (formerly in the Chromodorididae) and Aldisa form the family Cadlinidae , so that the Doridoidea belong to five families. The Chromodorididae family includes 17 genera:
- Ardeadoris Rudman , 1984
- Berlanguella Ortea, Bacallado & Valdés, 1992
- Cadlinella Thiele, 1931
- Ceratosoma JE Gray & ME Gray, 1850
- Chromodoris Alder and Hacock, 1855 - type genus
- Digidentis Rudman , 1984
- Diversidoris Rudman , 1987
- Doriprismatica d'Orbigny, 1839
- Durvilledoris Rudman , 1984
- Felimare Ev. Marcus & He. Marcus, 1967
- Felimida Marcus, 1971
- Glossodoris Ehrenberg , 1831
- Goniobranchus Pease, 1866
- Hypselodoris Stimpson, 1855
- Mexichromis Bertsch, 1977
- Miamira Bergh, 1874
- Noumea Risbec, 1928
- Pectenodoris Rudman , 1984
- Risbecia Odhner, 1934
- Thorunna Bergh , 1878
- Tyrinna Bergh , 1898
literature
- Luise Schmekel, Adolf Portmann: Opisthobranchia of the Mediterranean: Nudibranchia and Saccoglossa . Springer-Verlag, Berlin Heidelberg New York 1982. Chromodorididae Rafinesque, 1815 : p. 56.
- Rebecca F. Johnson (2010): Breaking family ties: taxon sampling and molecular phylogeny of chromodorid nudibranchs (Mollusca, Gastropoda) . Zoologica Scripta 40 (2), pp. 137-157. doi : 10.1111 / j.1463-6409.2010.00457.x .
- Philippe Bouchet & Jean-Pierre Rocroi: Part 2. Working classification of the Gastropoda . Malacologia, 47: 239-283, Ann Arbor 2005 ISSN 0076-2997
Web links
Individual evidence
- ↑ Penis as a disposable item. In: Saxon newspaper . February 14, 2013, accessed January 28, 2014 .
- ^ World Register of Marine Species , Chromodorididae Bergh, 1891
- ↑ Chromodorididae in the Integrated Taxonomic Information System (ITIS)