Canada country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: never/rarely | Ref:
Regulations: no regulations | Ref:
Uses: no uses
Comments: Known from the Canadian Arctic (Ref. 112625). C: Refs. 83435, 112625.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ca.html
National Fisheries Authority: http://www.ncr.dfo.ca/home_e.htm
Occurrences: Occurrences Point map
Main Ref: Kilada, R.W., S.E. Campana and D. Roddick, 2007
National Database:

Common names from other countries

Ocean quahog, ... more

Classification / Names / Names आम नाम | उपशब्द | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS

> Venerida () > Arcticidae ()

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

; गहराई सीमा 0 - 482 m (Ref. 88171). Temperate, preferred 7°C (Ref. 107945); 77°N - 35°N, 120°W - 45°E

वितरण देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | भूमिका

Northern Atlantic and the Arctic: from Bay of Cadiz Spain, north to Iceland, and from Cape Hatteras in North Carolina, USA to the Canadian Arctic. Subtropical to polar.

Length at first maturity / आकार / वज़न / Age

Maturity: L_m ?, range 2 - 4.1 cm Max length : 13.0 cm SHL पुल्लिंग / अलिंग; (Ref. 88171); common length : 7.6 cm SHL पुल्लिंग / अलिंग; (Ref. 360)

Short description आकृति विज्ञान

Shell: moderately swollen, thick and robust valves, almost circular, equivalved and inequilateral; has a thick dark brown to blackish periostracum; sculpture consists of thin concentric grooves; well-developed external ligament, reaching the end of the posterior margin of the valve, posterior to the umbones; hinge is heterodont, right and left valves each has three cardinal teeth, anterior and posterior lateral teeth; inside the valves are two slightly different muscle scars (dimyarian, anisomyarian), linked by a continuous pallial line (integropalliate), without a sinus; crossed-lamellae structure. Body: pair of gills each consists of two series of lamellae extensively linked by interlamellar junctions (eulamellibranch); foot is large and the two mantle lobes fuse to form two stout siphons.

Minimum depth from Ref. 7726. Maximum shell height at 13 cm (anterior-posterior: from the whorl to opposite shell edge) in the Northeast Atlantic. Considered one of the slowest growing clam species in the world and extremely long-lived with an age record of 374 years. As an endobenthic species, population threats include anthropogenic factors such as mechanical damage, oxygen deficiency/eutrophication, unintentional habitat dislocation, temperature and osmotic stress brought by climate change, and, on a major scale, increased trawl fishery in the North Atlantic (Ref. 88171).

Life cycle and mating behavior परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा

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.