|A live Talparia talpa in situ with its mantle almost fully extended, anterior end towards the right|
|Shells of a number of species of cowries|
Cypraeidae, common name the cowries (singular: cowry), is a taxonomic family of small to large sea snails. These are marine gastropod mollusks in the superfamily Cypraeoidea, the cowries and cowry allies.
Cypraeidae have adult shells which are very rounded, almost like an egg; they do not look like a typical gastropod shell. In virtually all of the species in the family Cypraeidae, the shells are extremely smooth and shiny. This is because in the living animal, the shell is nearly always fully covered with the mantle.
Juvenile cowry shells are not at all similar to adult cowry shells. The juvenile shells of cowries perhaps more closely resemble the shells of some "bubble snails" in the order Cephalaspidea. Also the shells of juvenile cowries seldom exhibit the same color patterns as the adult shells do, and thus can be hard to identify to species.
Cowries have no operculum.
Predators and prey
The very narrow toothed aperture of the cowry shell makes the adult shells difficult for many predators to reach into. However cowries are still vulnerable to predation:
- Some tropical crustaceans can break the dorsum of a cowry shell.
- Some mollusc-eating cones, such as Conus textile, can inject venom into the cowry's flesh. The cone then extends its stomach into the shell, through the aperature, to completely ingest the flesh.
- Some octopuses can gouge a small hole (using a special barb/tooth and an acidic secretion) through the shell to inject a venom that kills the animal within.
The eating habits of cowries are poorly known, because most species are nocturnal and cryptic, but sponges are the most commonly described prey. Off the coasts of Australia, common cowry species eat sponges, and on Caribbean coral reefs they are known to eat sponges that are otherwise chemically defended against other predators.
The family Cypraeidae belongs, together with the family Ovulidae, to the superfamily Cypraeoidea. This, in turn, is part of the clade Littorinimorpha which belongs within the clade Hypsogastropoda according to the taxonomy of Bouchet & Rocroi (2005).
- Cypraeinae Rafinesque, 1815
- tribe Cypraeini Rafinesque, 1815 - synonym: Porcellanidae Roberts, 1870 (inv.)
- tribe Mauritiini Steadman & Cotton, 1946
- Erosariinae Schilder, 1924 - synonyms: Cypraeacitinae Schilder, 1930 (inv.); Nariinae Schilder, 1932; Staphylaeinae iredale, 1935
- Erroneinae Schilder, 1927
- tribe Erroneini Schilder, 1927 - synonym: Adustinae Steadman & Cotton, 1946
- tribe Bistolidini C. Meyer, 2003
- Gisortiinae Schilder, 1927 - synonyms: Archicypraeinae Schilder, 1930; Bernayinae Schilder, 1927; Cpraeorbini Schilder, 1927; Mandolininae Schilder, 1932; Umbiliini Schilder 1932; Zoilinae Iredale, 1935
- Luriinae Schilder, 1932
- tribe Luriini Schilder, 1932 - synonym: Talpariinae Iredale, 1935
- tribe Austrocypraeini Iredale, 1935
- Pustulariinae Gill, 1871
- tribe Pustulariini Gill, 1871
- tribe Cypraeovulini Schilder, 1927
- tribe Zonariini Schilder, 1932
Genera within the family Cypraeidae include:
- Subfamily Cypraeinae Rafinesque, 1815
- Subfamily Erosariinae Schilder, 1924 - The taxonomy of Bouchet & Rocroi does not mention any tribes in this subfamily.
- Subfamily Erroneinae Schilder, 1927
- Tribe Erroneini Schilder, 1927
- Talostolida Iredale, 1931
- Tribe Bistolidini C. Meyer, 2003
- Subfamily Gisortiinae Schilder, 1927
- † Afrocypraea Schilder, 1932
- Archicypraea Schilder, 1926
- Barycypraea Schilder, 1927
- Bernaya Jousseaume, 1884
- Gisortia Jousseaume 1884
- Ipsa Jousseaume, 1884
- † Mandolina Jousseaume 1884
- Nesiocypraea Azuma & Kurohara, 1967
- Palaeocypraea Schilder, 1928
- Proadusta Sacco 1894
- Umbilia Jousseaume, 1884
- Vicetia Fabiani 1905
- Zoila Jousseaume, 1884
- Subfamily Luriinae Schilder, 1932
- Subfamily Pustulariinae Gill, 1871
- Tribe Pustulariini Gill, 1871
- Pustularia Swainson, 1840
- Tribe Cypraeovulini Schilder, 1927
- Tribe Pseudozonariini
- Tribe Zonariini Schilder, 1932
- subfamily ?
- Wilson, Barry; Clarkson, Peter (2004). Australia's Spectacular Cowries. El Cajon, CA, USA: Odyssey. ISBN 0966172027.
- Pawlik, JR; Deignan, Lindsey (2015). "Cowries graze verongid sponges on Caribbean reefs". Coral Reefs 34: 663. doi:10.1007/s00338-015-1279-x.
- Lorenz F. 2002. New Worldwide Cowries. Descriptions of new taxa and revisions of selected groups of living Cypraeidae (Mollusca: Gastropoda). Schriften zur Malakozoologie aus dem Haus der Natur-Cismar 20: 1-292, pl. 1-40
- Meyer C. P. (2003) "Molecular systematics of cowries (Gastropoda: Cypraeidae) and diversification patterns in the tropics". Biological Journal of the Linnean Society 79(3): 401–459. doi:10.1046/j.1095-8312.2003.00197.x
- Meyer, Christopher P. (2004). "Toward Comprehensiveness : Increased molecular sampling within Cypraeidae and its phylogenetic implications" (PDF). Malacologia 46 (1): 127–156. Retrieved 2010-10-10.
- Felix Lorenz and Alex Hubert : A Guide to Worldwide Cowries, second revised edition, Conch Books, 2002, ISBN 3-925919-25-2
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