Bivalvia |
Carditida |
Astartidae
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
Benthic; profondeur 6 - 270 m (Réf. 83435). Polar; 85°N - 34°N, 180°W - 180°E
Northern Pacific, Northern Atlantic and the Arctic.
Longueur à la première maturité / Taille / Poids / Âge
Maturité: Lm ? range ? - ? cm Max length : 5.1 cm SHL mâle / non sexé; (Réf. 360); common length : 2.5 cm mâle / non sexé; (Réf. 360)
Description synthétique
Morphologie
Shell: solid, moderately convex valves equivalved and almost equilateral, circular or oval in shape, umbones frequently eroded; thick yellowish periostracum in young individuals, darkish brown to blackish in adults; cream-colored shell; sculpture consists of incised concentric lines sometimes toward the umbo, slightly raised ribs; external ligament takes over half the area posterior to the umbones; heterodont hinge, two cardinal teeth on the right valve and three on the left; smooth outer valve margin; two equal muscle scars (dimyarian, isomyarian) joined by a continuous pallial line (integropaliiate) without a sinus; crossed-lamellae structure. Body: pair of gills each has two series of lamellae extensively fused by interlamellar junctions (eulamellibranch); moderately developed foot.
Maximum depth from Ref. 117961. It prefers sandy substrates and mixed sediments (Ref. 96078), but in the Baltic Sea it is found in muddy areas, with low temperatures and medium high salinity at depths deeper than 35 meters, compared to shallower areas (Ref. 95730). This bivalve is a suspension feeder (Ref. 3477). Surface deposit feeder (Ref. 66387).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
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.
MarineSpecies.org 2050 MarineSpecies.org. http://www.marinespecies.org/index.php (Réf. 3477)
Statut dans la liste rouge de l'IUCN
(Réf. 130435: Version 2025-2 (Global))
statut CITES (Réf. 108899)
Not Evaluated
Not Evaluated
Menace pour l'homme
Utilisations par l'homme
| FishSource |
Outils
Plus d'informations
Écologie trophiqueAliments (proies)
Composition du régime alimentaire
Consommation alimentaire
Prédateurs
Dynamique des populations Cycle de vieReproductionMaturitéFéconditéFraiŒufsDéveloppement de l'œufLarves PhysiologieConsommation d'oxygène
Liées à l'hommeTimbres, pièces de monnaie, divers
Sources Internet
Estimations basées sur des modèles
Température préférée
(Ref.
115969): 0.1 - 12, mean 2.5 (based on 1889 cells).
Vulnérabilité de la pêche
Moderate vulnerability (39 of 100).
Catégorie de prix
Unknown.
