Donax variabilis   Say, 1822

Variable coquina

Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Donax variabilis  AquaMaps  Data sources: GBIF OBIS
Upload your photos 
Google image |
Image of Donax variabilis (Variable coquina)
No image available for this species;
drawing shows typical species in Donacidae.

Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Bivalvia | Cardiida | Donacidae

Environment: milieu / climate zone / depth range / distribution range Ecology

Benthic; brackish; depth range 0 - 11 m (Ref. 83435).  Subtropical; 42°N - 10°N, 98°W - 63°W

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Western Atlantic: North America, from New York to Texas and Mexico, throughout the Gulf of Mexico. The Sea of Marmara and the Mediterranean: Introduced in Egypt and Turkey. Tropical to subtropical.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 1.9 cm DL male/unsexed; (Ref. 83435); max. reported age: 1.00 years (Ref. 8702)

Biology     Glossary (e.g. epibenthic)

Found in the intertidal zone on coarse-grained (Ref. 104171) sandy beaches (Refs. 104348, 104171). Some migrate up and down the beach with the tides (Ref. 104348). Actively migrates by jumping out of the sand and riding specific waves (Ref. 104171). Filter-feeder (Ref. 104245). Feeds on phytoplankton, algae, detritus, bacteria and other small suspended particles via its short siphons (Ref. 104246).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Semelparous species (Ref. 104352). Members of the class Bivalvia are mostly gonochoric, some are protandric hermaphrodites. Life cycle: Embryos develop into free-swimming trocophore larvae, succeeded by the bivalve veliger, resembling a miniature clam (Ref. 833).

Main reference References | Coordinator | Collaborators

Bisby, F.A., M.A. Ruggiero, K.L. Wilson, M. Cachuela-Palacio, S.W. Kimani, Y.R. Roskov, A. Soulier-Perkins and J. van Hertum. 2005. (Ref. 19)

IUCN Red List Status (Ref. 130435)

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses

Fisheries: subsistence fisheries
| FishSource |


More information

Common names
Egg development
Mass conversion

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 23.4 - 28, mean 26.8 (based on 348 cells).
Price category (Ref. 80766): Medium.