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Ensis directus   Conrad, 1843

American jack knife clam

Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Ensis directus   AquaMaps   Data sources: GBIF OBIS
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Image of Ensis directus (American jack knife clam)
Picture by Harvey-Clark, Chris

Classification
Bivalvia | Veneroida | Pharidae
Common names | Synonyms | CoL | ITIS | WoRMS

Main reference
Harvey-Clark, C. 1997. (Ref. 7726)
References | Biblio | Coordinator | Collaborators

Size / Weight / Age
Max length : 26.0 cm TL male/unsexed; (Ref. 7726)

Environment
Benthic; brackish; depth range 7 - 16 m (Ref. 113229)

Climate / Range
Temperate, preferred 12°C (Ref. 107945)

Distribution
Eastern Central Pacific and Atlantic Ocean.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Biology     Glossary (e.g. epibenthic)

Comprise communities and assemblages throughout the Mid-Atlantic Bight (Ref. 80354). Depth range is based on occurrence in German Bight (Ref. 113229); to be replaced with a better reference. Inhabits littoral and sublittoral sediment (Ref. 1314). Found in areas influenced by estuarine outflows (Ref. 96507). Swims backward (Ref. 80328). 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).

IUCN Red List Status (Ref. 114614)

   

CITES status (Ref. 94142)

Not Evaluated

Threat to humans




Human uses
Fisheries: commercial
FAO(fisheries: production) | FisheriesWiki | Sea Around Us |

More information

Common names
Synonyms
Predators
Reproduction
Maturity
Spawning
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Morphology
Larvae
Abundance

Internet sources
BHL | BOLD Systems | Check for other websites | Check FishWatcher | CISTI | DiscoverLife | FAO(fisheries: ; publication : search) | GenBank (genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | ispecies | National databases | PubMed | Scirus | Sea Around Us | FishBase | Tree of Life | uBio | uBio RSS | Wikipedia (Go, Search) | Zoological Record

Estimation of some characteristics with mathematical models

Vulnerability (Ref. 71543)
Low vulnerability (16 of 100)
Price category (Ref. 80766)
Low