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Sphaeriidae 
Summary
Sphaeriidae is a family of small to minute freshwater bivalve molluscs in the order Sphaeriida. In the US, they are commonly known as pea clams or fingernail clams.[3][4]
| Sphaeriidae | |
|---|---|
| |
| Four shells of Sphaerium corneum. Scale bar is in mm. | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Sphaeriida |
| Superfamily: | Sphaerioidea |
| Family: | Sphaeriidae Deshayes, 1855 (1820) |
| Genera | |
|
See text | |
| Synonyms | |
|
Cycladidae, Rafinesque 1820[1][2] | |
Genera edit
Genera:[5]
- Euperinae
- Byssanodonta d'Orbigny, 1846
- Eupera Bourguignat, 1854
- Sphaeriinae
- Afropisidium Kuiper, 1962
- Euglesa Jenyns, 1832
- Musculium Link, 1807
- Odhneripisidium Kuiper, 1962
- Pisidium C. Pfeiffer, 1821
- Sphaerium Scopoli, 1777
- fossils
- †Megasphaerioides Komatsu, J.-H. Chen & Q.-F. Wang, 2003
- †Protosphaerium Hocknull, 2000
- †Sphaericoncha Kolesnikov, 1980
Biology and ecology edit
Sphaeriidae are hermaphrodites with internal fertilization. Developing young are incubated within their mother (ovoviviparity), and newborn clams look like miniature copies of the adults.[4]
Parasites and/or predators include the Sciomyzidae.[6]
References edit
Wikimedia Commons has media related to Sphaeriidae.
Wikispecies has information related to Sphaeriidae.
- ^ Bowden, John & Heppell, David (1968). "Revised list of British Mollusca. 2. Unionacea-Cardiacea" (PDF). Journal of Conchology. 26 (4): 237–272, note 55, pages 253–254. Archived from the original (PDF) on 28 December 2014.
- ^ Baker, Horace Burrington (1964). "Notes on Sphaeriid Names". The Nautilus. 78 (2): 45–47.
- ^ Heard, William H. 1965. Comparative life histories of North American pill clams (Sphaeriidae: Pisidium). Malacologia, 2: 381-411.
- ^ a b Heard, William H. 1977. Reproduction of fingernail clams (Sphaeriidae: Sphaerium and Musculium). Malacologia, 16: 421-455.
- ^ "WoRMS - World Register of Marine Species - Sphaeriidae Deshayes, 1855 (1820)". www.marinespecies.org. Retrieved 26 October 2021.
- ^ Biology of Snail-Killing Sciomyzidae Flies at Google Books