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Abra alba

Abra alba (Photo : Hans Hillewaert)

Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Bivalvia
Subclassis: Heterodonta
Ordo: Veneroida
Superfamilia: Tellinoidea

Familia: Semelidae
Genus: Abra
Species: A. aequalis – A. alba – A. californica – A. lioica – A. longicallis – A. nitida – A. pacifica – A. prismatica – A. profundorum – A. tenuis – A. tepocana

Abra is a genus of saltwater clams, marine bivalve mollusks in the family Semelidae. Members of this genus are mostly under 1.5 centimeters long, and have thin shells which are usually white. These bivalves normally live under the surface of sandy and muddy sediments, in the neritic zone.[1]

They are considered an important food source for flat fish.[2]
Species

Species within the genus Abra include:

Abra aequalis (Say, 1822)
Abra alba (Wood W., 1802)
Abra californica Kundsen, 1970
Abra lioica (Dall, 1881)
Abra longicallis Sacchi, 1836
Abra nitida (O. F. Mueller, 1776)
Abra pacifica Dall, 1915
Abra prismatica
Abra profundorum E. A. Smith, 1885
Abra segmentum (Récluz, 1843)
Abra tenuis (Montagu, 1818)
Abra tepocana Dall, 1915

References

Barrett, J. & C. M. Yonge (1958) Collins Pocket Guide to the Sea Shore. Collins, London

Rees, H.L. and Dare. P.J (1993)Sources of mortality and associated life-cycle traits of selected benthic species: a review. Fisheries Research Data Report No. 33, Directorate of Fisheries Research, Lowestoft.

"Abra". National Center for Biotechnology Information (NCBI).

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